CN110040999A - A method of improving the cement slurry density for having compounded completion - Google Patents
A method of improving the cement slurry density for having compounded completion Download PDFInfo
- Publication number
- CN110040999A CN110040999A CN201910394819.3A CN201910394819A CN110040999A CN 110040999 A CN110040999 A CN 110040999A CN 201910394819 A CN201910394819 A CN 201910394819A CN 110040999 A CN110040999 A CN 110040999A
- Authority
- CN
- China
- Prior art keywords
- parts
- cement slurry
- completion
- compounded
- cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/026—Oil shale cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention provides a kind of methods for improving and having compounded the cement slurry density of completion, and described method includes following steps: adding weighting agent in the cement slurry for having compounded completion, improve the density for having compounded the cement slurry of completion；The weighting agent includes titanium oxide and/or Mn oxide.The present invention adds regioselective weighting agent in the cement slurry for having compounded completion, it is improved the cement slurry density for having compounded completion with compression strength, the method is simple, convenient for operation, it is easy large-scale promotion, it solves the problems, such as in well cementing process to need to recalculate compounding because cement slurry density caused by borehole pressure variation is improper, to improve well cementation efficiency and quality.
Description
Technical field
The invention belongs to cementing technology fields, are related to a kind of method more particularly to a kind of raising for improving cement slurry density
The method for having compounded the cement slurry density of completion.
Background technique
Well cementation, is a kind of setting of casing into oil well, and the construction to the annular space injection cement between wellbore and casing
Operation is important link indispensable in drillng operation, and well cementation includes two processes of setting of casing and cementing, wherein cementing
It is that casing enters the critical process after well, effect is the annular space sealing by casing and the borehole wall, to completely cut off oil-gas-water layer,
So that casing is become oil gas and leads to the channel in well.
Can well cementing operation is not only related to oil/gas well smoothly complete, and also will affect the quality of oil/gas well, service life after going into operation
And yield, and cementing the well is disposable engineering, if off quality, is difficult to obtain using meanss to save the situation such as squeeze methods
Good effect, and the well cementing operation construction time is short, heavy workload, it is very high to the comprehensive performance requirement of cement slurry, if
Slurry design is improper to will cause the problems such as cement slurry dodges solidifying, excessive slow setting or cement strength decline.
1,036,598 104263333 A of A, CN of CN, 105038743 A of CN 102212350A and CN etc. are to heterogeneity
Cement slurry studied, wherein 1036598 A of CN disclose trimanganese tetroxide particle can be added in cement slurry with
The density of cement slurry is improved, the ultra high density cement slurry that 104263333 A of CN discloses a kind of suitable ultra-high temperature condition is stablized
Agent is added to TiO in the stabilizer2With Mn3O4To improve the density of cement slurry, 102212350 A of CN disclose with bloodstone,
Perovskite powder or magnetic iron ore improve the density of cement slurry, and same 105038743 A of CN, which is disclosed, improves the close of cement slurry with Iron Ore Powder
Degree.But the above-mentioned prior art is to discuss the composition of cement slurry to improve the density of compounding cement slurry, not to how mentioning
The density of cement slurry after the completion of high compounding is discussed.
Under normal conditions, blended cement (including cement, silicon powder, heavy weight additive etc. are mixed in a certain ratio) is transported by cementing truck
To well cementation scene, if well cementation scene borehole pressure be increased to forecast pressure or more, it is necessary to improve the density of cement slurry with
Adapt to borehole pressure, this just needs to recalculate the composition of blended cement, need to re-mix later cement, silicon powder and
The materials such as heavy weight additive influence well cementation progress and cementing quality, and the density that cement slurry is improved simply by water is reduced is held
The problems such as easily causing cement slurry to dodge solidifying and cement slurry mixture difficulty, poor fluidity, being unable to satisfy construction requirement.
Therefore, develop it is a kind of it is simple and easy, not by the materials such as blended cement, silicon powder and heavy weight additive again, Neng Gouxian
The method that cement slurry density is safely and fast improved in field, for saving the field operation time, improving cementing quality, reduction well cementation cost
Have great importance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of improve to have compounded the cement slurry of completion
The method of density, the method is easy to operate, the density for the cement slurry for having compounded completion can be improved by simply operating, greatly
In the operation cycle for reducing well cementation greatly, the quality of well cementation is improved, caused by avoiding cementing slurry because of borehole pressure variation
Need the problem of re-mixing a variety of materials.
To achieve this purpose, the present invention adopts the following technical scheme:
The present invention provides a kind of methods for improving and having compounded the cement slurry density of completion, and the method includes walking as follows
It is rapid: to add weighting agent in the cement slurry for having compounded completion, improve the density for having compounded the cement slurry of completion.
The weighting agent includes titanium oxide and/or Mn oxide.The titanium oxide is preferably TiO2, the manganese oxidation
Object is preferably Mn3O4。
Preferably, the weighting agent is Mn3O4。
The present invention improves the density for having compounded the cement slurry of completion using regioselective weighting agent, described through the invention
Cement slurry after the raising density that method obtains, percentage of water loss is low, compression strength is high and consistency does not change significantly, and avoids drop
Low wash water is difficult and dodge solidifying problem to improve density bring mixture.
Preferably, the additive amount of the weighting agent is the 10-50% for having compounded cement quality in the cement slurry of completion, such as
It can be 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%, preferably 10-40%.Improve weighting agent
Additive amount can be improved the density of cement slurry, but excessive weighting agent can compression strength to cement slurry and consistency cause not
Benefit influences, therefore the additive amount of weighting agent is the 10-50% of cement quality in cement slurry in the present invention.
Preferably, the partial size of the weighting agent be 1000-10000 mesh, such as can be 1000 mesh, 2000 mesh, 3000 mesh,
4000 mesh, 5000 mesh, 6000 mesh, 7000 mesh, 8000 mesh, 9000 mesh or 10000 mesh, preferably 5000-8000 mesh.In cement slurry
There are a large amount of calcium hydroxide, gel of calcium silicate, aluminium silicate hydrate, hydrated calcium ferrite and hydrated calcium aluminate sulfate, wherein hydroxide
Calcium can be precipitated as huge crystal, and hydrated calcium aluminate sulfate is small crystals, and drated calcium aluminate is more small crystals, gel of calcium silicate
With the unformed colloidal state of hydrated calcium ferrite presentation or fibrous sheet, after the weighting agent for adding specified particle diameter, can not only mention
Height has compounded the density of the cement slurry of completion, additionally it is possible to be interspersed in weighting agent particles preferably between various crystal, enhancing is each
The bonding of kind crystal structure and gel structure, is continuously improved strength of cement grout.
It preferably, according to parts by weight include 90-110 parts of cement, 110-130 parts in the cement slurry for having compounded completion
Iron Ore Powder, 30-40 part silicon powder, 0.5-1 parts of defoaming agents, 1.5-2.5 parts of dispersing agents, 4-6 parts of fluid loss agents, 8-12 parts of anti-gas channelings
Agent, 2-3 parts of retarder and 50-60 parts of water.
The parts by weight of the cement are 90-110 parts, such as can be 90 parts, 95 parts, 100 parts, 105 parts or 110 parts,
Preferably 100 parts；The parts by weight of the Iron Ore Powder are 110-130 parts, such as can be 110 parts, 115 parts, 120 parts, 125 parts
Or 130 parts, preferably 120 parts；The parts by weight of the silicon powder are 30-40 parts, such as can be 30 parts, 32 parts, 35 parts, 37 parts
Or 40 parts, preferably 35 parts；The parts by weight of the defoaming agent be 0.5-1 parts, such as can be 0.5 part, 0.6 part, 0.7 part,
0.8 part, 0.9 part or 1 part, preferably 0.9 part；The parts by weight of the dispersing agent be 1.5-2.5 parts, such as can be 1.5 parts,
1.7 parts, 2 parts, 2.2 parts or 2.5 parts, preferably 2 parts；The parts by weight of the fluid loss agent be 4-6 parts, such as can be 4 parts,
4.5 parts, 5 parts, 5.5 parts or 6 parts, preferably 5 parts；The parts by weight of the agent for anti gassing-out are 8-12 parts, such as can be 8 parts, 9
Part, 10 parts, 11 parts or 12 parts, preferably 10 parts；The parts by weight of the retarder are 2-3 parts, such as can be 2 parts, 2.2
Part, 2.5 parts, 2.8 parts or 3 parts, preferably 2.5 parts；The parts by weight of the water are 50-60 parts, such as can be 50 parts, 52
Part, 54 parts, 56 parts, 58 parts or 60 parts, preferably 54 parts.
Preferably, the cement is G grades of oil-well cements or H grades of oil-well cements, and G grades of oil-well cements are with H grades of oil-well cements
Basic oil-well cement, those skilled in the art can reasonably be selected according to process requirement.
Preferably, the defoaming agent includes organic silicon defoamer and/or polyphosphazene polymer ethers defoaming agent, preferably organosilicon
Defoaming agent.
Preferably, the dispersing agent includes polyether-type polycarboxylic acids, polyester-type polycarboxylic acids, the compound polycarboxylic acids of ester ether, melamine
In amine-formaldehyde resins, calcium lignosulfonate, sodium lignin sulfonate or calgon any one or at least two combination,
Typical but non-limiting combination includes polyether-type polycarboxylic acids in the combination of polyester-type polycarboxylic acids, and polyester-type polycarboxylic acids and ester ether are multiple
Close the combination of polycarboxylic acids, the combination of melamine resin and calcium lignosulfonate, calcium lignosulfonate, sodium lignin sulfonate
With the combination of calgon, melamine resin, the combination of calcium lignosulfonate and sodium lignin sulfonate or polyether-type
Polycarboxylic acids, polyester-type polycarboxylic acids, the compound polycarboxylic acids of ester ether, melamine resin, calcium lignosulfonate, sodium lignin sulfonate
With the combination of calgon, preferably polyether-type polycarboxylic acids.
Preferably, the retarder include polymerization species retarder, organic phosphate, lignosulfonates, sulfonation tannin,
In sodium tannate or tartaric acid any one or at least two combination, it is typical but non-limiting combination include polymerization species
The combination of the combination of retarder and tartaric acid, organic phosphate and lignosulfonates, the group of organic phosphate and sulfonation tannin
It closes, the combination of lignosulfonates and sodium tannate, sulfonation tannin, the combination of sodium tannate and tartaric acid or organic phosphate,
The combination of lignosulfonates, sulfonation tannin, sodium tannate and tartaric acid.
Polymerization species retarder of the present invention is that a variety of different functional monomers are incorporated in one by polymerization technique
It rises, the retarder of control strand length and molecular size range, including AMPS/AA bipolymer, AMPS/IA binary copolymerization
Object, the polymer containing sulfonic acid and carboxylic acid group, the polymer of phosphoric acid and carboxylic acid group or any one in graft polymers
Or at least two combination.
Preferably, the fluid loss agent includes AMPS quasi polymer, carboxymethyl cellulose, hydroxyethyl cellulose or carboxymethyl
In hydroxyethyl cellulose any one or at least two combination, it is typical but non-limiting combination include AMPS quasi polymer
The combination of the combination of fluid loss agent and carboxymethyl cellulose, carboxymethyl cellulose and hydroxyethyl cellulose, carboxymethyl cellulose, hydroxyl
The combination or AMPS quasi polymer fluid loss agent, carboxymethyl cellulose, hydroxyl second of ethyl cellulose and carboxymethyl hydroxyethyl cellulose
The combination of base cellulose and carboxymethyl hydroxyethyl cellulose, preferably AMPS quasi polymer.
Preferably, the agent for anti gassing-out include in siliceous class, styrene-butadiene latex class or water-base resin class any one or extremely
Few two kinds of combination, preferably styrene-butadiene latex.
The preparation method of cement slurry of the present invention is conventional preparation method, and those skilled in the art can be according to technique
It needs reasonably to be selected, as an example, the preparation method of cement slurry of the present invention may include steps of:
(a) formula ratio blended cement, Iron Ore Powder and silicon powder are pressed, mixture A is obtained；
(b) under the conditions of 4000r/min by formula ratio mixing water, dispersing agent, fluid loss agent, retarder, agent for anti gassing-out with
Defoaming agent obtains mixture B, then 4000r/min addition under, blend mixture A and mixture B in 30S, obtain described in
Compound the cement slurry completed.
As the optimal technical scheme of the method provided by the present invention, described method includes following steps: compounding completion
The Mn that partial size is 1000-10000 mesh is added in cement slurry3O4, improve the density for having compounded the cement slurry of completion, the Mn3O4's
Additive amount is the 10-50% for having compounded cement quality in the cement slurry of completion.
Numberical range of the present invention not only includes enumerated point value, further includes the above-mentioned numerical value not included
Arbitrary point value between range, as space is limited and for concise consideration, range described in the present invention no longer exclusive list includes
Specific point value.
Compared with prior art, the invention has the benefit that
The present invention adds regioselective weighting agent in the cement slurry for having compounded completion, makes the cement slurry for having compounded completion
Density is improved with compression strength, and the method is simple, convenient for operation, is easy large-scale promotion, solves in well cementing process
The problem of recalculating compounding is needed because cement slurry density caused by borehole pressure changes is improper, to improve well cementation
Efficiency and quality.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.
Preparation example 1
This preparation example provides a kind of cement slurry compounded, and the cement slurry includes 100 parts of water according to parts by weight
Mud, 120 parts of Iron Ore Powders, 35 parts of silicon powders, 0.9 part of defoaming agent, 2 parts of dispersing agents, 5 parts of fluid loss agents, 10 parts of agent for anti gassing-out, 2.5 parts
Retarder and 54 parts of water.
The cement is G grades of oil-well cements；The defoaming agent is organic silicon defoamer；The dispersing agent is the poly- carboxylic of polyether-type
Acid；The fluid loss agent is AMPS polymer；The retarder is lignosulfonates；The agent for anti gassing-out is styrene-butadiene latex.
The step of preparation method of cement slurry of the present invention, is as follows:
(a) formula ratio blended cement, Iron Ore Powder and silicon powder are pressed, mixture A is obtained；
(b) formula ratio mixing water, polyether-type polycarboxylic acids, AMPS polymer, lignin sulfonic acid are pressed under the conditions of 4000r/min
Salt, styrene-butadiene latex and organic silicon defoamer obtain mixture B, then under 4000r/min addition, blend mixture A in 30S
With mixture B, the cement slurry for having compounded completion is obtained.
The density that gained has compounded the cement slurry of completion is 2.3g/cm3。
Preparation example 2
This preparation example provides a kind of cement slurry compounded, and the cement slurry includes 90 parts of water according to parts by weight
Mud, 130 parts of Iron Ore Powders, 30 parts of silicon powders, 1 part of defoaming agent, 1.5 parts of dispersing agents, 6 parts of fluid loss agents, 8 parts of agent for anti gassing-out, 2 parts of slow settings
Agent and 60 parts of water.
The cement is G grades of oil-well cements；The defoaming agent is organic silicon defoamer；The dispersing agent is the poly- carboxylic of polyether-type
Acid；The fluid loss agent is AMPS polymer；The retarder is lignosulfonates；The agent for anti gassing-out is styrene-butadiene latex.
The step of preparation method of cement slurry of the present invention, is as follows:
(a) formula ratio blended cement, Iron Ore Powder and silicon powder are pressed, mixture A is obtained；
(b) formula ratio mixing water, polyether-type polycarboxylic acids, AMPS polymer, lignin sulfonic acid are pressed under the conditions of 4000r/min
Salt, styrene-butadiene latex and organic silicon defoamer obtain mixture B, then under 4000r/min addition, blend mixture A in 30S
With mixture B, the cement slurry for having compounded completion is obtained.
The density that gained has compounded the cement slurry of completion is 2.27g/cm3。
Preparation example 3
This preparation example provides a kind of cement slurry compounded, and the cement slurry includes 110 parts of water according to parts by weight
Mud, 110 parts of Iron Ore Powders, 40 parts of silicon powders, 0.5 part of defoaming agent, 2.5 parts of dispersing agents, 4 parts of fluid loss agents, 12 parts of agent for anti gassing-out, 3 parts
Retarder and 54 parts of water.
The cement is G grades of oil-well cements；The defoaming agent is organic silicon defoamer；The dispersing agent is the poly- carboxylic of polyether-type
Acid；The fluid loss agent is AMPS polymer；The retarder is lignosulfonates；The agent for anti gassing-out is styrene-butadiene latex.
The step of preparation method of cement slurry of the present invention, is as follows:
(a) formula ratio blended cement, Iron Ore Powder and silicon powder are pressed, mixture A is obtained；
(b) formula ratio mixing water, polyether-type polycarboxylic acids, AMPS polymer, lignin sulfonic acid are pressed under the conditions of 4000r/min
Salt, styrene-butadiene latex and organic silicon defoamer obtain mixture B, then under 4000r/min addition, blend mixture A in 30S
With mixture B, the cement slurry for having compounded completion is obtained.
The density that gained has compounded the cement slurry of completion is 2.25g/cm3。
Preparation example 4
This preparation example provides a kind of cement slurry compounded, and the cement slurry includes 100 parts of water according to parts by weight
Mud, 120 parts of Iron Ore Powders, 35 parts of silicon powders, 0.9 part of defoaming agent, 2 parts of dispersing agents, 5 parts of fluid loss agents, 10 parts of agent for anti gassing-out, 2.5 parts
Retarder and suitable water, the density of the cement slurry compounded are 2.38g/m3, remaining is identical as preparation example 1.
Embodiment 1
Addition partial size is the Mn of 6000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, the Mn3O4's
Additive amount is to have compounded 25% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.38g/m3。
Embodiment 2
Addition partial size is the Mn of 8000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, the Mn3O4's
Additive amount is to have compounded 20% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.37g/m3。
Embodiment 3
Addition partial size is the Mn of 5000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, the Mn3O4's
Additive amount is to have compounded 40% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.43g/m3。
Embodiment 4
Addition partial size is the Mn of 1000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, the Mn3O4's
Additive amount is to have compounded 10% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.33g/m3。
Embodiment 5
Addition partial size is the Mn of 10000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, the Mn3O4
Additive amount be to have compounded 50% of cement quality in the cement slurry of completion, the density of gained cement slurry is by 2.3g/m3It is increased to
2.47g/m3。
Embodiment 6
Addition partial size is the TiO of 6000 mesh in the cement slurry for having compounded completion that preparation example 1 provides2, the TiO2Add
Dosage is to have compounded 25% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.36g/m3。
Embodiment 7
Addition partial size is the Mn of 6000 mesh in the cement slurry for having compounded completion that preparation example 2 provides3O4, the Mn3O4's
Additive amount is to have compounded 25% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.27g/m3It is increased to
2.35g/m3。
Embodiment 8
Addition partial size is the Mn of 6000 mesh in the cement slurry for having compounded completion that preparation example 3 provides3O4, the Mn3O4's
Additive amount is to have compounded 25% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.25g/m3It is increased to
2.33g/m3。
Embodiment 9
Addition partial size is the Mn of 6000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, the Mn3O4's
Additive amount is to have compounded 75% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.54g/m3。
Comparative example 1
Addition partial size is the Iron Ore Powder of 6000 mesh, the iron ore in the cement slurry for having compounded completion that preparation example 1 provides
The additive amount of powder is to have compounded 25% of cement quality in the cement slurry of completion, and added Iron Ore Powder is unable to fully mix with cement slurry
It closes.
Comparative example 2
Addition partial size is the calcium carbonate of 6000 mesh, the carbonic acid in the cement slurry for having compounded completion that preparation example 1 provides
The additive amount of calcium is to have compounded 25% of cement quality in the cement slurry of completion, and added calcium carbonate is unable to fully mix with cement slurry
It closes.
Comparative example 3
Addition partial size is the barium carbonate of 6000 mesh, the carbonic acid in the cement slurry for having compounded completion that preparation example 1 provides
The additive amount of barium is to have compounded 25% of cement quality in the cement slurry of completion, and added barium carbonate is unable to fully mix with cement slurry
It closes.
After the addition weighting agent provided the preparation example 1-4 cement slurry for having compounded completion provided and embodiment 1-9
The API dehydration of cement slurry, thickening time and compression strength are tested.Wherein, Shen Hang OWC-9710 type is used at 90 DEG C
Filter press measures API dehydration；It is measured at 130 DEG C, 60MPa using Chandler8040D type cement slurry high temperature and pressure multiviscosity meter
Thickening time；After cement specimen mold is conserved r for 24 hours using Shen Hang OWC-9490 type high temperature and pressure protective cauldron at 150 DEG C, 21MPa,
Compression strength is measured with the even loading pressure testing machine of Shenyang Jin Ou section YJ-2001 type；Acquired results are as shown in table 1.
Table 1
As shown in Table 1, the density for the cement slurry for having compounded completion that preparation example 1 provides is 2.3g/cm3, API at 90 DEG C
Dehydration is 48mL, 130 DEG C, the thickening time under 60MPa be 250min, compression strength 20.6MPa.
Embodiment 1 is added to the Mn that partial size is 6000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, add
Dosage is to have compounded 25% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.38g/m3, and API dehydration is only increased to 54mL by 48mL, the thickening time is only increased to 275min, compression strength by 250min
21.5MPa is increased to by 20.6MPa.
Embodiment 2 is added to the Mn that partial size is 8000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, add
Dosage is to have compounded 20% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.37g/m3, and API dehydration is only increased to 51mL by 48mL, the thickening time is only increased to 283min, compression strength by 250min
22.7MPa is increased to by 20.6MPa.
Embodiment 3 is added to the Mn that partial size is 5000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, add
Dosage is to have compounded 40% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.43g/m3, and API dehydration is reduced to 40mL by 48mL, and the thickening time is reduced to 247min by 250min, compression strength by
20.6MPa being increased to 23.2MPa.
Embodiment 4 is added to the Mn that partial size is 1000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4, add
Dosage is to have compounded 10% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.33g/m3, API dehydration is reduced to 45mL by 48mL, and the thickening time is increased to 255min by 250min, compression strength by
20.6MPa being increased to 21.6MPa.
Embodiment 5 is added to the Mn that partial size is 10000 mesh in the cement slurry for having compounded completion that preparation example 1 provides3O4,
Additive amount is to have compounded 50% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It is increased to
2.47g/m3, API dehydration is reduced to 36mL by 48mL, and the thickening time is reduced to 230min by 250min, but compression strength by
20.6MPa being increased to 23.7MPa.
It is 6000 purposes that embodiment 6 is added to addition partial size in the cement slurry for having compounded completion that preparation example 1 provides
TiO2, additive amount is to have compounded 25% of cement quality in the cement slurry of completion, and the density of gained cement slurry is by 2.3g/m3It increases
To 2.36g/m3, API dehydration is increased to 52mL by 48mL, and the thickening time is increased to 266min by 250min, compression strength by
20.6MPa being increased to 21.1MPa
The density for the cement slurry for having compounded completion that preparation example 2 provides is 2.27g/cm3, API dehydration at 90 DEG C is
65mL, 130 DEG C, the thickening time under 60MPa be 269min, compression strength 15.7MPa.Embodiment 7 is provided in preparation example 2
The Mn for adding that partial size is 6000 mesh in the cement slurry of completion is compounded3O4, additive amount is to have compounded cementaceous in the cement slurry of completion
The 25% of amount, the density of gained cement slurry is by 2.27g/m3It is increased to 2.35g/m3, API dehydration is increased to 73mL by 65mL, is thickened
Time is increased to 286min by 269min, and compression strength is increased to 16.4MPa by 15.7MPa.
The density for the cement slurry for having compounded completion that preparation example 3 provides is 2.25g/cm3, API dehydration at 90 DEG C is
57mL, 130 DEG C, the thickening time under 60MPa be 287min, compression strength 18.5MPa.Embodiment 8 is provided in preparation example 3
The Mn for adding that partial size is 6000 mesh in the cement slurry of completion is compounded3O4, additive amount is to have compounded cementaceous in the cement slurry of completion
The 25% of amount, the density of gained cement slurry is by 2.27g/m3It is increased to 2.33g/m3, API dehydration is increased to 64mL by 57mL, is thickened
Time is increased to 295min by 287min, and compression strength is increased to 19.3MPa by 18.5MPa.
Embodiment 1 is to add suitable Mn3O4The density for the cement slurry for having compounded completion for providing preparation example 1 is by 2.3g/
m3It is increased to 2.38g/m3, and API dehydration, thickening time amplitude of variation are little, compression strength increases.And preparation example 4 is not changing
Only lead in the case where cement, heavy weight additive, silicon powder, defoaming agent, dispersing agent, fluid loss agent, agent for anti gassing-out and retarder additive amount
The additive amount for changing water is crossed to improve density to 2.38g/m3, gained cement slurry slurry is difficult, and cement consistency is high, can not be normal
Experiment carries out API dehydration, thickening time and intensity test, can not be used to cement the well.
Mn in embodiment 93O4Additive amount be to have compounded 75% of cement quality in the cement slurry of completion, be higher than application examples 1
In 25%, although the density of gained cement slurry is by 2.3g/m3It is increased to 2.54g/m3, but compression strength is 19.3MPa, is lower than
20.6MPa in application examples 1, it is contemplated that the cost problem in practical application, the additive amount of weighting agent is set to by the present invention has answered
The 10-50% of cement slurry quality with completion.
Mn is substituted using Iron Ore Powder, calcium carbonate and barium carbonate respectively in comparative example 1-33O4As weighting agent, but Iron Ore Powder,
Calcium carbonate can not be sufficiently mixed with barium carbonate with the cement slurry for having compounded completion, cannot be used to adjust the cement slurry for having compounded completion
Density and compression strength.
In conclusion method provided by the invention can be improved the cement slurry density and compression strength for having compounded completion, and
API dehydration and thickening time do not vary widely, overcome because strata pressure increases, and need again to carry out cement slurry
The defect for calculating and compounding again, improves well cementation efficiency, and then improve cementing quality.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of improve the method for having compounded the cement slurry density of completion, which is characterized in that described method includes following steps:
It has compounded and has added weighting agent in the cement slurry of completion, improved the density for having compounded the cement slurry of completion；
The weighting agent includes titanium oxide and/or Mn oxide.
2. the method according to claim 1, wherein the additive amount of the weighting agent is the cement for having compounded completion
The 10-50% of cement quality, preferably 10-40% in slurry.
3. method according to claim 1 or 2, which is characterized in that the partial size of the weighting agent is 1000-10000 mesh, excellent
It is selected as 5000-8000 mesh.
4. method according to claim 1-3, which is characterized in that the titanium oxide is TiO2。
5. method according to claim 1-4, which is characterized in that the Mn oxide is Mn3O4。
6. according to the method described in claim 5, it is characterized in that, the weighting agent is Mn3O4。
7. method according to claim 1-6, which is characterized in that by weight in the cement slurry for having compounded completion
Measuring number meter includes 90-110 parts of cement, 110-130 parts of Iron Ore Powders, 30-40 parts of silicon powders, 0.5-1 parts of defoaming agents, 1.5-2.5 parts
Dispersing agent, 4-6 part fluid loss agent, 8-12 parts of agent for anti gassing-out, 2-3 parts of retarder and 50-60 parts of water.
8. the method according to the description of claim 7 is characterized in that in the cement slurry for having compounded completion according to parts by weight
Including 100 parts of cement, 120 parts of Iron Ore Powders, 35 parts of silicon powders, 0.9 part of defoaming agent, 2 parts of dispersing agents, 5 parts of fluid loss agents, 10 parts of gas-tights
Alter agent, 2.5 parts of retarder and 54 parts of water.
9. method according to claim 7 or 8, which is characterized in that the cement is G grades of oil-well cements or H grades of oil well water
Mud；
Preferably, the defoaming agent includes organic silicon defoamer and/or polyphosphazene polymer ethers defoaming agent, and preferably organosilicon defoams
Agent；
Preferably, the dispersing agent includes polyether-type polycarboxylic acids, polyester-type polycarboxylic acids, the compound polycarboxylic acids of ester ether, melamine first
In urea formaldehyde, calcium lignosulfonate, sodium lignin sulfonate or calgon any one or at least two combination, preferably
For polyether-type polycarboxylic acids；
Preferably, the retarder includes polymerization species retarder, organic phosphate, lignosulfonates, sulfonation tannin, tannin
In sour sodium or tartaric acid any one or at least two combination；
Preferably, the fluid loss agent includes AMPS quasi polymer, carboxymethyl cellulose, hydroxyethyl cellulose or carboxymethyl hydroxyl second
In base cellulose any one or at least two combination, preferably AMPS quasi polymer；
Preferably, the agent for anti gassing-out includes any one in siliceous class, styrene-butadiene latex class or water-base resin class or at least two
The combination of kind, preferably styrene-butadiene latex.
10. -9 described in any item methods according to claim 1, which is characterized in that described method includes following steps: answering
The Mn that partial size is 1000-10000 mesh is added in cement slurry with completion3O4, improve the density for having compounded the cement slurry of completion, institute
State Mn3O4Additive amount be the 10-50% for having compounded cement quality in the cement slurry of completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394819.3A CN110040999A (en) | 2019-05-13 | 2019-05-13 | A method of improving the cement slurry density for having compounded completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394819.3A CN110040999A (en) | 2019-05-13 | 2019-05-13 | A method of improving the cement slurry density for having compounded completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110040999A true CN110040999A (en) | 2019-07-23 |
Family
ID=67281718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910394819.3A Pending CN110040999A (en) | 2019-05-13 | 2019-05-13 | A method of improving the cement slurry density for having compounded completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110040999A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155763A1 (en) * | 2004-01-16 | 2005-07-21 | Reddy B. R. | Settable fluids comprising particle-size distribution-adjusting agents and methods of use |
| CN101338184A (en) * | 2007-07-04 | 2009-01-07 | 中国石油集团工程技术研究院 | Water-dispersible oil well cement adulterant |
| CN103119123A (en) * | 2011-07-11 | 2013-05-22 | 埃尔凯姆有限公司 | Oil well drilling fluids, oil well cement composition, and slurry of weighting material comprising ilmenite |
| CN107721272A (en) * | 2017-10-27 | 2018-02-23 | 中国石油集团长城钻探工程有限公司固井公司 | A kind of high tenacity, high elastoplasticity, highdensity cement paste for well cementation |
| CN107916094A (en) * | 2017-12-06 | 2018-04-17 | 成都科盛石油科技有限公司 | The heat safe high-density cement mortar in oil field |
| US10150904B1 (en) * | 2018-03-30 | 2018-12-11 | King Fahd University Of Petroleum And Minerals | Nano zeolite cement additive and methods of use |
-
2019
- 2019-05-13 CN CN201910394819.3A patent/CN110040999A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155763A1 (en) * | 2004-01-16 | 2005-07-21 | Reddy B. R. | Settable fluids comprising particle-size distribution-adjusting agents and methods of use |
| CN101338184A (en) * | 2007-07-04 | 2009-01-07 | 中国石油集团工程技术研究院 | Water-dispersible oil well cement adulterant |
| CN103119123A (en) * | 2011-07-11 | 2013-05-22 | 埃尔凯姆有限公司 | Oil well drilling fluids, oil well cement composition, and slurry of weighting material comprising ilmenite |
| CN107721272A (en) * | 2017-10-27 | 2018-02-23 | 中国石油集团长城钻探工程有限公司固井公司 | A kind of high tenacity, high elastoplasticity, highdensity cement paste for well cementation |
| CN107916094A (en) * | 2017-12-06 | 2018-04-17 | 成都科盛石油科技有限公司 | The heat safe high-density cement mortar in oil field |
| US10150904B1 (en) * | 2018-03-30 | 2018-12-11 | King Fahd University Of Petroleum And Minerals | Nano zeolite cement additive and methods of use |
Non-Patent Citations (3)
| Title |
|---|
| 《有色金属工业分析丛书》编辑委员会: "《地质和地球化学物料分析》", 31 December 1993, 冶金工业出版社 * |
| 杨昭等: "《油田化学》", 31 January 2016, 哈尔滨工业大学出版社 * |
| 洪平: "《特种水泥》", 31 March 1998, 中国建材工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108298902B (en) | High-temperature-resistant silicate cement slurry and preparation method thereof | |
| US6106603A (en) | Stable suspension of hydrocolloids and superplasticizer | |
| CN108706927B (en) | Suspension stabilizer for high-temperature cement paste and high-temperature-resistant cement paste prepared from suspension stabilizer | |
| CN104310839B (en) | Concrete intensifier and preparation method | |
| CN105367720A (en) | Water-reducing slump-retaining type polycarboxylic acid water reducing agent and preparing method thereof | |
| CN111018410B (en) | Cement paste system and preparation method thereof | |
| CN104086114B (en) | A kind of concrete admixture based on cyclodextrin functional group and preparation method thereof | |
| CN111635497B (en) | Underwater concrete anti-dispersant and preparation method thereof | |
| CN103771746B (en) | Liquid cement synergist and preparation method thereof | |
| CN109180084B (en) | Active self-repairing cement slurry system responding to oil gas | |
| CN113651931A (en) | Ultra-high temperature modified polymer cementing fluid loss agent and preparation method and application thereof | |
| CN104926238A (en) | Nano cement paste | |
| CN111303846A (en) | Oil-gas well cementing brine high-density cement slurry | |
| CN112876129A (en) | Preparation method of cement concrete water reducing agent | |
| EP1674434A1 (en) | Fluid loss control agents and compositions for cementing oil and gas wells comprising said fluid loss control agent | |
| WO2024198014A1 (en) | Concrete modifying agent and preparation method therefor, concrete admixture and concrete composition | |
| CN103804620A (en) | Naphthalene polycarboxylate slump-keeping water reducing agent and preparation method thereof | |
| CN109880604B (en) | Weak coagulation accelerating type early strength agent for oil well cement | |
| CN111019616A (en) | Low-density cement slurry for well cementation operation and cement composition for well cementation operation | |
| CN110040999A (en) | A method of improving the cement slurry density for having compounded completion | |
| CN110510912B (en) | Wet-mixed mortar additive and preparation method thereof | |
| CN111362640A (en) | High-strength machine-made sand concrete and preparation method thereof | |
| WO2023123976A1 (en) | Crystalline phase modified broad-spectrum ultrahigh-temperature-resistant well cementing slurry and application thereof | |
| CN115505070A (en) | High-temperature-resistant expansion fiber resin plugging material, preparation method thereof and application thereof in leak prevention and plugging of well cementation cement slurry | |
| CN116239729A (en) | Low-sensitivity concrete slump retaining agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190723 |