CN100339328C - High strength and low density oil well cement - Google Patents
High strength and low density oil well cement Download PDFInfo
- Publication number
- CN100339328C CN100339328C CNB2004100401643A CN200410040164A CN100339328C CN 100339328 C CN100339328 C CN 100339328C CN B2004100401643 A CNB2004100401643 A CN B2004100401643A CN 200410040164 A CN200410040164 A CN 200410040164A CN 100339328 C CN100339328 C CN 100339328C
- Authority
- CN
- China
- Prior art keywords
- cement
- oil well
- well cement
- low density
- dispersion agent
- 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.)
- Expired - Lifetime
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- 239000004568 cement Substances 0.000 title claims abstract description 49
- 239000003129 oil well Substances 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000008719 thickening Effects 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 claims description 14
- 239000012745 toughening agent Substances 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims description 2
- 150000002894 organic compounds Chemical group 0.000 claims description 2
- 229910021487 silica fume Inorganic materials 0.000 claims description 2
- 229960004418 trolamine Drugs 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 208000034699 Vitreous floaters Diseases 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to high strength and low-density oil well cement, which can be used for oil field cementing. The cement slurry density is 1.60 (+/-) 0.02 g/cm<3>, and is composed of oil well cement, alleviative material (one of pozzolan, fly ash and floaters or the combination thereof), a cement slurry stabilizing agent (micro silicon) and additives. The present invention enhances the early strength of cement, improves the controllable performance of the flow performance and the thickening time, and satisfies the requirements of low pressure stratigraphic oil field cementing to cement performance by adjusting the mineral composition formula and selecting the proportion of material used for production.
Description
Technical field
The present invention relates to oil well cement, particularly a kind of cement slurry density is 1.60 ± 0.02g/cm
3, be used for the high intensity low density oil well cement of reinforcing oil well.
Background technology
The many reservoir pressures in oil field are low at present, gas-bearing formation active, the technical barrier that has well cementation leakage and annular channeling in the reinforcing oil well operation, adopt the conventional cementing method not only easily to cause leakage, have a strong impact on cementing quality, also can destroy stratum, polluted reservoir, reduction oil recovery amount.
Solve the reinforcing oil well leakage and mainly contain two kinds of methods, the one, adopt twin-stage or multistage cementing; The 2nd, adopt the light-weight additive material to reduce cement slurry density.The former more complicated of not only constructing, and the rig time that takies is long, though the latter is the direction that research is at present used, but in the active strength scope density of most light-weight additives to reduce ultimate value still higher, can not satisfy the requirement on some stratum.In the practical application, when these low pressure stratum blocks were cemented the well, because the complicacy that limitation of field condition and stratum itself have, existing low-density cement mortar can't satisfy the requirement of practice of construction.
Summary of the invention
The objective of the invention is to design a kind of cement slurry density according to the reinforcing oil well needs is 1.60 ± 0.02g/cm
3High intensity low density oil well cement, it has good physicals, has higher intensity under low temperature (45 ℃) situation, rheological property is good, the thickening time can be controlled.Intensity is low when cement slurry density reduces, rheological property is poor, uppity deficiency of thickening time to solve prior art, thereby improves the reinforcing oil well quality, reduces the reinforcing oil well risk.
Purpose of the present invention is achieved through the following technical solutions: a kind of high intensity low density oil well cement, by cement material, lightening material, grout stablizer and admixture are formed, wherein lightening material is a volcanic ash, flyash, float a kind of or its mixture in the pearl, content is 22～54%, the grout stablizer is a SILICA FUME, content is 10～20%, admixture is toughener and dispersion agent, toughener is organic compound trolamine or melamino-formaldehyde, dispersion agent is that keto-aldehyde condenses or naphthalene are dispersion agent, it is characterized in that the cement material in the described component is an oil well cement, content is 35～65%, when product preparation, be mixed into 0.5～5% toughener and 0.1～1.5% dispersion agent, described content is weight percent content, and the main physical parameters of described high intensity low density oil well cement is: cement slurry density is 1.60 ± 0.02g/cm
3, ultimate compression strength 〉=20MPa under 45 ℃, 21MPa, 24h condition, the thickening time 〉=100min under the degree of mobilization 〉=24cm, 45 ℃, 30MPa, 20min intensification condition, rheological property n 〉=0.5, k≤2.
The technological process of production and the production unit of the production technique of high intensity low density oil well cement and production unit and existing oil well cement are basic identical.When cement products prepares, prepare at grinding on request and to mix lightening material and admixture in the qualified oil well cement, after puddling, obtain powder product,, satisfy the well cementation needs of low pressure stratigraphic oil fields by improving the early strength of cement.
The mineral composition of high intensity low density oil well cement of the present invention determines that through repeatedly experiment, test-results screening its every performance index department after testing detect, the requirement that all is above standard has unique physicals, reflects through user back on probation, on-the-spot well cementation use properties is good, and cementing quality is excellent.
According to the high intensity low density oil well cement that the present invention proposes, have the following advantages and substantial technique effect:
One, early strength height.By adjustment, and the proportion optimization of producing material therefor, make the low density (1.60g/cm of preparation to its mineral composition of used oil well cement prescription
3) oil well cement paste, slurry stability is good, and is not stratified, can reduce water-solid ratio, thereby makes this cement early strength height, ultimate compression strength 〉=20MPa under 45 ℃ * 21MPa * 24h curing condition, and low density (1.60g/cm is now used in the oil field
3) oil well cement, under the same terms, intensity only is 14～16MPa.
Two, through the high intensity low density oil well cement good uniformity of suitability for industrialized production.Overcome the reinforcing oil well scene be mixed the lack of homogeneity that exists, unstable properties, transport easy stratified weakness between different components at a distance, greatly reduce the well cementation risk, and easy to use, simplify schedule of operation and reduced use equipment, reduced pollution to environment.
Three, the thickening time is controlled.Under 45 ℃ * 30MPa * 20min intensification condition, thickening time 〉=100min.According to the site operation requirement, can adjust each set of dispense controlled variable when in the production, make to produce to be in the control of dynamic stability, thereby make the high intensity low density oil well cement thickening time of production satisfy the well cementation needs, and it is promptly adjustable to add a small amount of retardant.
Four, good rheological property.Because cement of the present invention adopts suitability for industrialized production, good uniformity makes the rheological of each several part cement keep stable, and performance is good, rheological property n 〉=0.5, k≤2.
Five, design according to domestic reinforcing oil well operation needs, satisfied customer need, embodied personalized product characteristics and personalized service.
Embodiment
The present invention is further illustrated below in conjunction with embodiment:
Embodiment 1, consisting of of high intensity low density oil well cement: oil well cement 62.5%, lightening material (15% flyash+10% floats pearl) 24%, grout stablizer 9.8%, mixing toughener 2.9% (adopting high and new technology industrial development zone, Mianyang, Sichuan to think the SK-2 hardening accelerator that triumphant Fine Chemical Works is produced), under the situation of dispersion agent 0.8% (the SPF dispersion agent that adopts Pengshan, Sichuan, West China concrete admixture company limited to produce), the high intensity low density oil well cement of this composition detects through physicals, ultimate compression strength is 28MPa under 45 ℃ * 21MPa * 24h condition, degree of mobilization is 25cm, 45 ℃ * 30MPa * 20mim intensification following thickening time of condition is 110min, rheological property n=0.7, k=0.52.
Embodiment 2, consist of: oil well cement 38.8%, lightening material (flyash) 43.7%, grout stablizer 14.5%, under the situation of mixing toughener 2.5% (SK-2 hardening accelerator), dispersion agent 0.5% (SPF dispersion agent), control water cement ratio 0.60 detects through physicals, and ultimate compression strength is 23MPa under 45 ℃ * 21MPa * 24h condition, degree of mobilization is 26cm, 45 ℃ * 30MPa * 20mim intensification following thickening time of condition is 135min, rheological property n=0.7, k=0.52.
Embodiment 3, consist of: oil well cement 52.7%, lightening material (23.7% flyash+10% floats pearl) 33.7%, grout stablizer 9.6%, mix outside under the situation of toughener (SK-2 hardening accelerator) 3.5%, dispersion agent (SPF dispersion agent) 0.5, control water cement ratio 0.50, detect through physicals, ultimate compression strength is 31MPa under 45 ℃ * 21MPa * 24h condition, degree of mobilization is 26cm, 45 ℃ * 30MPa * 20mim intensification following thickening time of condition is 152min, rheological property n=0.8, k=0.26.
The requirement that all is above standard of the index of above embodiment, use properties is good, and cementing quality is excellent.
Claims (1)
1, a kind of high intensity low density oil well cement, by cement material, lightening material, grout stablizer and admixture are formed, wherein lightening material is a volcanic ash, flyash, float a kind of or its mixture in the pearl, content is 22～54%, the grout stablizer is a SILICA FUME, content is 10～20%, admixture is toughener and dispersion agent, toughener is organic compound trolamine or melamino-formaldehyde, dispersion agent is that keto-aldehyde condenses or naphthalene are dispersion agent, it is characterized in that the cement material in the described component is an oil well cement, content is 35～65%, be mixed when product preparation into 0.5～5% toughener and 0.1～1.5% dispersion agent, described content is weight percent content, and the main physical parameters of described high intensity low density oil well cement is: cement slurry density is 1.60 ± 0.02g/cm
3, ultimate compression strength 〉=20MPa under 45 ℃, 21MPa, 24h condition, the thickening time 〉=100min under the degree of mobilization 〉=24cm, 45 ℃, 30MPa, 20min intensification condition, rheological property n 〉=0.5, k≤2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100401643A CN100339328C (en) | 2004-07-12 | 2004-07-12 | High strength and low density oil well cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100401643A CN100339328C (en) | 2004-07-12 | 2004-07-12 | High strength and low density oil well cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1721353A CN1721353A (en) | 2006-01-18 |
| CN100339328C true CN100339328C (en) | 2007-09-26 |
Family
ID=35912020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100401643A Expired - Lifetime CN100339328C (en) | 2004-07-12 | 2004-07-12 | High strength and low density oil well cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100339328C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630806A (en) * | 2017-01-06 | 2017-05-10 | 中国海洋石油总公司 | Cement mixed component and application thereof |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475347B (en) * | 2009-01-21 | 2012-08-29 | 大庆油田有限责任公司 | Non-floating bead low-density cement mortar |
| CN102010702B (en) * | 2009-09-04 | 2013-06-26 | 中国石油化工股份有限公司 | Oil-well cement additive against carbon dioxide corrosion as well as preparation method and application thereof |
| CN101747009B (en) * | 2009-12-04 | 2012-07-04 | 四川嘉华企业（集团）股份有限公司 | High-temperature low-density cement and applications thereof |
| CN101747880B (en) * | 2009-12-29 | 2013-12-04 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN102329601B (en) * | 2011-10-28 | 2012-10-31 | 西南石油大学 | Low-temperature early-strength corrosion-resistant cement paste system for deepwater cementing |
| CN103571446A (en) * | 2012-07-20 | 2014-02-12 | 中国石油化工股份有限公司 | Low-density oil well cement additive, and preparation method and applications thereof |
| CN102827593B (en) * | 2012-09-14 | 2015-10-21 | 中国石油大学(华东) | A kind of deepwater well cementing mortar architecture activated based on slag |
| CN102942314B (en) * | 2012-11-30 | 2014-07-09 | 广西鱼峰水泥股份有限公司 | Oil well cement and production method thereof |
| CN103435307B (en) * | 2013-09-02 | 2015-05-06 | 山东理工大学 | Method for preparing low-density oil well cement briquettes by using hafnium carbide microbeads |
| CN103467016B (en) * | 2013-09-02 | 2015-06-17 | 山东理工大学 | Preparation method for preparing low-density oil well cement test block from composite ceramic microbeads |
| CN103467023B (en) * | 2013-09-02 | 2015-04-15 | 山东理工大学 | Method for preparing low density oil well cementing cement test blocks by using pitchstone |
| CN103467019B (en) * | 2013-09-02 | 2015-06-17 | 山东理工大学 | Method for preparing low-density oil well cementing cement briquettes by using vanadium carbide microspheres |
| CN103601430B (en) * | 2013-11-20 | 2015-03-11 | 山东理工大学 | Method of preparing low-density well cementation cement check block of oil well by utilizing silicon carbide ceramic microbeads |
| CN103819150B (en) * | 2014-03-05 | 2015-05-06 | 山东理工大学 | Preparation method for oil well cementing cement briquette by adopting tungsten carbide silicon dioxide composite ceramics micro-beads |
| CN108395881A (en) * | 2017-05-31 | 2018-08-14 | 宁夏亿昀特种工程材料有限公司 | Oil-well cement mitigation extra material |
| CN108395882A (en) * | 2017-05-31 | 2018-08-14 | 宁夏亿昀特种工程材料有限公司 | Well cementation light weight cement |
| CN108395154A (en) * | 2017-05-31 | 2018-08-14 | 宁夏亿昀特种工程材料有限公司 | Well cementation light weight cement |
| CN107324715A (en) * | 2017-06-12 | 2017-11-07 | 镇江宇神动力能源有限公司 | A kind of oil-well cement |
| CN111825399A (en) * | 2019-09-12 | 2020-10-27 | 尧柏特种水泥技术研发有限公司 | Low-thixotropy low-density high-strength cement paste |
| CN112250369A (en) * | 2020-09-21 | 2021-01-22 | 中石油煤层气有限责任公司 | Crack plugging consolidation agent, preparation method and crack plugging method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105387A (en) * | 1985-09-03 | 1987-03-04 | 埃尔凯姆公司 | Hydrauliccement |
-
2004
- 2004-07-12 CN CNB2004100401643A patent/CN100339328C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105387A (en) * | 1985-09-03 | 1987-03-04 | 埃尔凯姆公司 | Hydrauliccement |
Non-Patent Citations (1)
| Title |
|---|
| 试论水泥外加剂对石油固井质量的作用 黄仁山，石油钻控技术，第23卷 1995 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630806A (en) * | 2017-01-06 | 2017-05-10 | 中国海洋石油总公司 | Cement mixed component and application thereof |
| CN106630806B (en) * | 2017-01-06 | 2019-04-26 | 中国海洋石油集团有限公司 | A kind of cement mixing component and its application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1721353A (en) | 2006-01-18 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: EMEISHAN QIANGHUA SPECIAL CEMENT Co.,Ltd. Assignor: SICHUAN JIAHUA ENTERPRISE (Group) Co.,Ltd. Contract record no.: 2011510000322 Denomination of invention: High strength and low density oil well cement Granted publication date: 20070926 License type: Exclusive License Open date: 20060118 Record date: 20111206 |
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| C56 | Change in the name or address of the patentee |
Owner name: JIAHUA SPECIAL CEMENT CO., LTD. Free format text: FORMER NAME: SICHUAN JIAHUA ENTERPRISE (GROUP) CORP., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 614003 Ma'anshan City, Sichuan Province, No. nine Feng Road, No. 2, Patentee after: JIAHUA SPECIAL CEMENT Co.,Ltd. Address before: 614003 Ma'anshan City, Sichuan Province, No. nine Feng Road, No. 2, Patentee before: SICHUAN JIAHUA ENTERPRISE (Group) Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20070926 |