CN106593315B - Prevent the assembled casing of casing deformation - Google Patents
Prevent the assembled casing of casing deformation Download PDFInfo
- Publication number
- CN106593315B CN106593315B CN201611235118.8A CN201611235118A CN106593315B CN 106593315 B CN106593315 B CN 106593315B CN 201611235118 A CN201611235118 A CN 201611235118A CN 106593315 B CN106593315 B CN 106593315B
- Authority
- CN
- China
- Prior art keywords
- casing
- sleeve pipe
- described sleeve
- connector
- preventing
- 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.)
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- 239000004744 fabric Substances 0.000 claims abstract description 35
- 239000004568 cement Substances 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 238000010008 shearing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000013517 stratification Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The present invention provides a kind of assembled casing for preventing casing deformation comprising at least one section of tube unit, tube unit include: casing；Connector is connected to one end of described sleeve pipe；Fabric outer jacket is sheathed on outside described sleeve pipe, and the connector is fixed in one end of the fabric outer jacket.The of the invention assembled casing structure for preventing casing deformation is simple, novel in design, flow of installation safely and fast; casing deformation when can be effectively prevented well pressure break; obvious to casing protection effect, casing is unlikely to deform, damages, when reasonably solving well pressure break the problem of casing deformation.
Description
Technical field
The present invention relates to drilling well assembled casings used in the energy extractions such as petroleum, natural gas, refer in particular to a kind of for preventing
Only when well pressure break casing deformation assembled casing, belong to the energy extractions such as petroleum, natural gas and be drilled well field.
Background technique
There is different degrees of damage in Sichuan Province of China Changning-Weiyuan shale gas block casing in hydraulic fracturing, leads
Pressing crack construction difficulty and increased costs are caused, bring extreme difficulties for subsequent job and production, cause that well yield is low, well Life Cycle
The problems such as phase is short seriously affects shale gas exploitation whole economic efficiency.With the fast development of unconventional oil and gas, fracturing technique is
The main means of unconventional oil and gas reservoir reconstruction, and pressure break occurs along with microseism often, causes the mistake of stratum some scale
Dynamic, shearing force caused by the changing of the relative positions of stratum acts directly on casing, and plastic deformation, which occurs, for casing even destroys, and finally leads
Cause pressing crack construction that can not continue.The casing of major part fractured well especially shale gas well is all using high-intensitive single layer at present
Casing all fails the problem of being effectively prevented casing deformation.Due to casing deformation, the reduction of reservoir hydrfracturing number of segment is resulted in,
Well yield reduces, and cannot obtain good economic benefit, hinders the exploitation of unconventional oil and gas scale.
Summary of the invention
The purpose of the invention is to provide a kind of assembled casings for preventing casing deformation, to overcome the above-mentioned prior art
It is insufficient.By being arranged fabric outer jacket outside casing, it is unlikely to deform casing, solves the problems, such as casing deformation when well pressure break.
The assembled casing provided by the invention for preventing casing deformation includes at least one section of tube unit, described sleeve pipe unit packet
It includes:
Casing；
Connector is connected to one end of described sleeve pipe；
Fabric outer jacket is sheathed on outside described sleeve pipe, and the connector is fixed in one end of the fabric outer jacket.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein there are multiple eyelets, described on the fabric outer jacket
In the state that assembled casing is located in pit shaft, the cement slurry in annular space formed between the assembled casing and the pit shaft can lead to
It crosses multiple eyelets and penetrates into the annular space formed between the fabric outer jacket and described sleeve pipe, outside the cement slurry and the fiber
Set combines together.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the connector is connected to the top of described sleeve pipe, along institute
The circumferencial direction for stating the outer wall of connector offers an at least upper groove and an at least lower groove, can be embedded a card in the lower groove
Hoop, the clip can be in the external fixed fabric outer jackets of the connector.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the assembled casing for preventing casing deformation includes more
The described sleeve pipe unit that section is connected in series, in two sections of adjacent described sleeve pipe units, the described sleeve pipe of top described sleeve pipe unit
Bottom end be connected to the connector of lower section described sleeve pipe unit, the lower end of the fabric outer jacket of top described sleeve pipe unit is logical
It crosses in the upper groove for the connector that another clip is fixed to lower section described sleeve pipe unit.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the connector is connected to the bottom end of described sleeve pipe, along institute
The circumferencial direction for stating the outer wall of connector offers an at least upper groove and an at least lower groove, can be embedded a card in the upper groove
Hoop, the clip can be in the external fixed fabric outer jackets of the connector.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the assembled casing for preventing casing deformation includes more
The described sleeve pipe unit that section is connected in series, in two sections of adjacent described sleeve pipe units, the described sleeve pipe of lower section described sleeve pipe unit
Top be connected to the connector of top described sleeve pipe unit, the upper end of the fabric outer jacket of lower section described sleeve pipe unit is logical
It crosses in the lower groove for the connector that another clip is fixed to top described sleeve pipe unit.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein be spiral shell between the connector and one end of described sleeve pipe
Line connection.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the outer diameter of described sleeve pipe is 0.127 meter to 0.245 meter.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the outer diameter of the fabric outer jacket be 0.152 meter extremely
0.280 meter.
Such as the above-mentioned assembled casing for preventing casing deformation, wherein the fabric outer jacket is by aramid fiber or high strength carbon
Fibrous material is made.
The features of the present invention and advantage are as follows:
The of the invention assembled casing structure for preventing casing deformation is simple, novel in design, flow of installation safely and fast,
Casing deformation when can be effectively prevented well pressure break, obvious to casing protection effect, casing is unlikely to deform, damages, and reasonably solves
When well pressure break the problem of casing deformation.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is working state schematic representation of the present invention.
Fig. 3 is the structural schematic diagram of connector of the invention.
Accompanying drawings symbol description:
1 casing
2 connectors
21 upper grooves
22 lower grooves
3 fabric outer jackets
4 clips
5 boreholes wall
6 cement slurries
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment:
As shown in Figure 1 and Figure 2, in order to be covered when solving existing well fracturing, especially shale gas well reservoir hydrfracturing
Problem easily-deformable, easy to damage is managed, the present invention provides a kind of assembled casing for preventing casing deformation comprising at least one section of casing
Unit, tube unit include: casing 1；Connector 2 is connected to one end of casing 1；Fabric outer jacket 3 is sheathed on outside casing 1,
Connector 2 is fixed in one end of fabric outer jacket 3.When using the assembled casing for preventing casing deformation of the invention, fiber will be arranged with
In the 1 tripping in reservoir stratification of casing of housing 3, crack and mature fault well section, in well cementing process, cement slurry 6 seeped outside fiber
Set 3, fills up the annular space between casing 1 and the borehole wall 5, and after the solidification of cement slurry 6, fabric outer jacket 3 is integrated to be formed with cement slurry 6
Cement sheath can be improved the intensity of tube unit.During fracturing work, if stratification, crack and mature fault stratum occur
The changing of the relative positions, generated shearing force are consumed on the cement sheath containing fiber because of shearing force caused by the changing of the relative positions of stratum, thus
Protection sleeve pipe 1 is injury-free.The of the invention assembled casing structure for preventing casing deformation is simple, novel in design, mounting process stream
Safely and fast, casing deformation when can be effectively prevented well pressure break is obvious to casing protection effect, and casing is unlikely to deform, damages for journey,
When reasonably solving well pressure break the problem of casing deformation.
Wherein, there are multiple eyelet (not shown) on fabric outer jacket 3, in the state that assembled casing is located in pit shaft,
Cement slurry 6 in the annular space formed between assembled casing and pit shaft can be penetrated between fabric outer jacket 3 and casing 1 by multiple eyelets
The annular space of formation, cement slurry 6 combine together with fabric outer jacket 3.After the solidification of cement slurry 6, fabric outer jacket 3 is combined into cement slurry 6
Integrally formed cement sheath, can be improved the intensity of tube unit.During fracturing work, if stratification, crack and mature fault
The changing of the relative positions occurs for stratum, and generated shearing force is consumed on the cement sheath containing fiber because cutting caused by the changing of the relative positions of stratum
Shear force, so that protection sleeve pipe 1 is injury-free.
In a feasible embodiment, as shown in figure 3, connector 2 is connected to the top of casing 1, along the outer wall of connector 2
Circumferencial direction offers an at least upper groove 21 and an at least lower groove 22, and a clip 4,4 energy of clip can be embedded in lower groove 22
In the external anchoring fiber housing 3 of connector 2.The quantity of lower groove 22 and its internal clip 4 being embedded can be come according to the actual situation
Selection, such as be two, which is not limited by the present invention.
Further, the assembled casing for preventing casing deformation of the invention includes the tube unit of multi-stage series connection, phase
In two sections of adjacent tube units, the bottom end of the casing 1 of top tube unit is connected to the connector 2 of lower section tube unit, upper square set
The lower end of the fabric outer jacket 3 of pipe unit is fixed in the upper groove 21 of the connector 2 of lower section tube unit by another clip 4.?
During well cementation, the number of segment of tube unit can be selected according to the actual situation.
In another feasible embodiment, connector 2 is connected to the bottom end of casing 1, along the circumferencial direction of the outer wall of connector 2
An at least upper groove 21 and an at least lower groove 22 are offered, a clip 4 can be embedded in upper groove 21, clip 4 can be in connector 2
External anchoring fiber housing 3.The quantity of upper groove 21 and its internal clip 4 being embedded can select according to the actual situation, such as
It is two, which is not limited by the present invention.
Further, prevent casing deformation assembled casing include multi-stage series connection tube unit, adjacent two sections
In tube unit, the top of the casing 1 of lower section tube unit is connected to the connector 2 of top tube unit, lower section tube unit
The upper end of fabric outer jacket 3 is fixed in the lower groove 22 of the connector 2 of top tube unit by another clip 4.In the mistake of well cementation
Cheng Zhong can select the number of segment of tube unit according to the actual situation.
It wherein, is to be threadedly coupled between connector 2 and one end of casing 1.The present invention to this connection type without limitation.
In a feasible embodiment, the outer diameter of casing 1 is 0.127 meter to 0.245 meter (i.e. 5 inches to 9.625 English
It is very little), the outer diameter of fabric outer jacket 3 is 0.152 meter to 0.280 meter (i.e. 6 inches to 11 inches).The outer diameter of casing 1 can be according to pit shaft
Internal diameter selected, and the outer diameter of fabric outer jacket 3 is further selected according to the outer diameter of casing 1.
Specifically, fabric outer jacket 3 is made of aramid fiber or high intensity carbon fiber material.During fracturing work, if
The changing of the relative positions occurs for stratification, crack and mature fault stratum, and generated shearing force is in containing aramid fiber or high-intensitive carbon fiber
It ties up on cement sheath made of material, since the tensile strength of high strength fibre is 10 times of P110 steel level oil steel pipe tensile strength
More than, it can consume because of shearing force caused by the changing of the relative positions of stratum, so that protection sleeve pipe is injury-free.The high strength fibre is virtue
Synthetic fibre fiber or high-strength carbon fiber.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, under the premise of not departing from design and the principle of the present invention made by equivalent changes and modifications, should all
Belong to the scope of protection of the invention.And it should be noted that each component part of the invention is not limited in above-mentioned entirety answers
With, each technical characteristic described in specification of the invention can select according to actual needs one individually use or select it is multinomial
Combine use, and therefore, the present invention covers other combinations related with this case inventive point and concrete application in the nature of things.
Claims (9)
1. a kind of assembled casing for preventing casing deformation, which is characterized in that the assembled casing for preventing casing deformation includes extremely
Few one section of tube unit, described sleeve pipe unit include:
Casing；
Connector is connected to one end of described sleeve pipe；
Fabric outer jacket is sheathed on outside described sleeve pipe, and the connector is fixed in one end of the fabric outer jacket；
Wherein, there are multiple eyelets, in the state that the assembled casing is located in pit shaft, the combination on the fabric outer jacket
The cement slurry in annular space formed between casing and the pit shaft can penetrate into the fabric outer jacket and institute by multiple eyelets
The annular space formed between casing is stated, the cement slurry combines together with the fabric outer jacket.
2. preventing the assembled casing of casing deformation as described in claim 1, which is characterized in that the connector is connected to the set
The top of pipe offers an at least upper groove and an at least lower groove along the circumferencial direction of the outer wall of the connector, described recessed
A clip can be embedded in slot, the clip can be in the external fixed fabric outer jacket of the connector.
3. preventing the assembled casing of casing deformation as claimed in claim 2, which is characterized in that the group for preventing casing deformation
Trap pipe includes the described sleeve pipe unit of multi-stage series connection, in two sections of adjacent described sleeve pipe units, top described sleeve pipe list
The bottom end of the described sleeve pipe of member is connected to the connector of lower section described sleeve pipe unit, the fiber of top described sleeve pipe unit
The lower end of housing is fixed in the upper groove of the connector of lower section described sleeve pipe unit by another clip.
4. preventing the assembled casing of casing deformation as described in claim 1, which is characterized in that the connector is connected to the set
The bottom end of pipe offers an at least upper groove and an at least lower groove, the fovea superior along the circumferencial direction of the outer wall of the connector
A clip can be embedded in slot, the clip can be in the external fixed fabric outer jacket of the connector.
5. preventing the assembled casing of casing deformation as claimed in claim 4, which is characterized in that the group for preventing casing deformation
Trap pipe includes the described sleeve pipe unit of multi-stage series connection, in two sections of adjacent described sleeve pipe units, lower section described sleeve pipe list
The top of the described sleeve pipe of member is connected to the connector of top described sleeve pipe unit, the fiber of lower section described sleeve pipe unit
The upper end of housing is fixed in the lower groove of the connector of top described sleeve pipe unit by another clip.
6. preventing the assembled casing of casing deformation as described in claim 1, which is characterized in that the connector and described sleeve pipe
It is threaded connection between one end.
7. preventing the assembled casing of casing deformation as described in claim 1, which is characterized in that the outer diameter of described sleeve pipe is
0.127 meter to 0.245 meter.
8. preventing the assembled casing of casing deformation as described in claim 1, which is characterized in that the outer diameter of the fabric outer jacket is
0.152 meter to 0.280 meter.
9. preventing the assembled casing of casing deformation as described in claim 1, which is characterized in that the fabric outer jacket is by aramid fiber fibre
Dimension or high intensity carbon fiber material are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235118.8A CN106593315B (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235118.8A CN106593315B (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593315A CN106593315A (en) | 2017-04-26 |
| CN106593315B true CN106593315B (en) | 2019-02-15 |
Family
ID=58602951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235118.8A Active CN106593315B (en) | 2016-12-28 | 2016-12-28 | Prevent the assembled casing of casing deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593315B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120070B (en) * | 2017-06-15 | 2023-03-14 | 新疆国利衡清洁能源科技有限公司 | Drilling structure and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101697A (en) * | 1994-04-18 | 1995-04-19 | 华北石油管理局钻井工艺研究所 | Double layer combined case-pipe post structure and cementing method |
| CN102089494A (en) * | 2008-07-11 | 2011-06-08 | 韦尔泰克有限公司 | Sealing arrangement and sealing method |
| CN201991451U (en) * | 2011-03-11 | 2011-09-28 | 中国海洋石油总公司 | High-strength composite pipe |
| CN102459806A (en) * | 2009-05-27 | 2012-05-16 | 里德威尔服务有限公司 | Active external casing packer (ecp) for frac operations in oil and gas wells |
| CN206458332U (en) * | 2016-12-28 | 2017-09-01 | 中国石油天然气集团公司 | Prevent the assembled casing of casing deformation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080035328A1 (en) * | 2006-08-09 | 2008-02-14 | Tejas Associates, Inc. | Laminate pressure containing body for a well tool |
-
2016
- 2016-12-28 CN CN201611235118.8A patent/CN106593315B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101697A (en) * | 1994-04-18 | 1995-04-19 | 华北石油管理局钻井工艺研究所 | Double layer combined case-pipe post structure and cementing method |
| CN102089494A (en) * | 2008-07-11 | 2011-06-08 | 韦尔泰克有限公司 | Sealing arrangement and sealing method |
| CN102459806A (en) * | 2009-05-27 | 2012-05-16 | 里德威尔服务有限公司 | Active external casing packer (ecp) for frac operations in oil and gas wells |
| CN201991451U (en) * | 2011-03-11 | 2011-09-28 | 中国海洋石油总公司 | High-strength composite pipe |
| CN206458332U (en) * | 2016-12-28 | 2017-09-01 | 中国石油天然气集团公司 | Prevent the assembled casing of casing deformation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593315A (en) | 2017-04-26 |
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Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: China National Petroleum Corp. Patentee after: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: DRILLING RESEARCH INSTITUTE OF CHINA NATIONAL PETROLEUM Co. |
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Effective date of registration: 20230103 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. |
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