CN102516965A - Cementing slurry with high temperature, high density and high toughness - Google Patents
Cementing slurry with high temperature, high density and high toughness Download PDFInfo
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- CN102516965A CN102516965A CN2011104032258A CN201110403225A CN102516965A CN 102516965 A CN102516965 A CN 102516965A CN 2011104032258 A CN2011104032258 A CN 2011104032258A CN 201110403225 A CN201110403225 A CN 201110403225A CN 102516965 A CN102516965 A CN 102516965A
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Abstract
The invention discloses a cementing slurry with high temperature, high density and high toughness, which comprises the following ingredients by weight 100 parts of H grade oil well cement, 30-40 parts of silicon powder, 80-120 parts of a GM weighting agent, 0.6-0.8 parts of a suspending agent, 4-6 parts of a high temperature fluid loss reducer, 4.0-5.0 parts of a dispersant, 0.1 parts of an antifoaming agent, 5.0-6.0 parts of NaCl, 3 parts of latex and 57.35-59.72 parts of water. The density of the cementing slurry can reach 2.40-2.50gcm3, the cementing slurry can resist a temperature of 160 DEG C, and the cementing slurry has the advantages of good rheological property under high temperature, good settlement stability and good cement stone toughness, is suitable for cementing depth wells and ultra-deep wells, and is in favor of improving the sealing quality and raising the quality of the wells.
Description
Technical field
The present invention relates to oil drilling well cementation field, particularly relate to a kind of high-temperature high-density toughness cementing slurry.
Background technology
Along with deepening continuously of petroleum exploration and development, well depth increases gradually, and reservoir pressure, temperature are increasingly high, and annular clearance diminishes gradually, and cement mantle toughness reduces.Like that 2-14 well finishing drilling well depth of oil field, Tarim Basin enlightening 5100m, mud equal yield density 2.3g/cm
3FT reaches 152. ℃, and some deep-well, ultra deep well FT, pressure are higher, and the conventional density grout of temperature that is used for the middle-deep well well cementation can not meet the demands; Therefore, research and development good comprehensive properties high-density high temperature toughness grout is significant to deep-well, ultra deep well well cementation.
In order to address the above problem, domestic all the employing with weighting agent improved cement slurry density, managed the way that the grout high-temperature behavior is adjusted in agent outward with high temperature resistance, but there is following shortcoming in this method:
1, the increase that requires along with cement slurry density, it is big that weighting agent contains quantitative change, cement paste rheological variation, constructional difficulties;
2, a lot of domestic high-temperature cement admixture on the market promptly begins degraded at 120 ℃, is difficult to reach 160 ℃ temperature resistance requirement, and cement slurry property can not obtain that adjusting should be arranged, constructional difficulties, and quality does not ensure; External high temperature admixture better performances, the well cementation success ratio is higher, but cost is also high;
3, the circular clearance, deep is little, utilize fiber reinforced be prone to cause suppress stifledly, construction risk is big, possibly cause the well cementation failure.
Summary of the invention
The technical problem that the present invention will solve provides a kind of high-temperature high-density toughness cementing slurry, to satisfy deep-well, ultra deep well well cementation needs, improves cementing quality, reduces cost.
For this reason, technical scheme of the present invention is following:
A kind of high-temperature high-density toughness cementing slurry, its component following weight part is prepared from:
The purity of wherein said ground silica＞96%; Described suspension agent is the D182 suspension agent; Described high temperature water retaining is the BXF-200L water retaining; Described dispersion agent adopts the BCD-200L dispersion agent; Described skimmer is the D50 skimmer; Described latex is BCT-800L latex.
This grout is with homemade admixture, extra material adjustment each item performance, and density reaches 2.40-2.50g/cm
3, temperature resistance reaches 160 ℃, with the toughness reinforcing anti-channeling of latex.Through a large amount of verification experimental verifications, this mortar architecture has the density height, and rheological under the hot conditions, sedimentation stability are good, and characteristics such as cement stone good toughness are applicable to deep-well, ultra deep well well cementation, help improving the sealing quality, improve cementing quality.In addition, this system has low dehydration (the API dehydration is less than 50ml), low bleed (in 0.2%) and adjustable characteristics of thickening time, can satisfy deep well cementing construction needs.
Embodiment
Below in conjunction with specific embodiment high-temperature high-density toughness cementing slurry of the present invention is elaborated.In following examples, extra material and admixture adopt and do, wet mixing bonded method.Cement, silica part, GM weighting agent are puddled evenly, formed mixed ash and be stored in the storage tank; Salt, suspension agent, high temperature water retaining, dispersion agent, high temperature retarder, skimmer and the latex etc. that calculate are joined in the water of calculated amount, fully stir and make its dissolving, the use of can constructing after 3 weeks of circulating.Thereby regulate the high-temperature high-density grout that the wc acquisition needs density through grey speed under the mixed ash of Auto-regulating System of Density of Heavy Medium system control of cementing truck during cementing operation.
In following embodiment; Used GM weighting agent (high-density weighting agent) is the GM powdered iron ore that Chongqing new beneficial machinofacture ltd produces; Suspension agent D182 is that U.S. Schlumberger Technology Corporation company produces; Water retaining and dispersion agent are respectively BXF-200L multipolymer class water retaining (liquid) and the BCD-200L dispersion agent (liquid) that cementing technology company of Tianjin Zhongyou Boxing Engineering Technology Co., Ltd. produces, and D50 skimmer (liquid) and BCT-800L latex also are that cementing technology company of Tianjin Zhongyou Boxing Engineering Technology Co., Ltd. produces.
Embodiment 1
With 100 parts of H level oil well cements, 30 parts of ground silicas, the GM weighting agent is puddled evenly for 80 parts, forms mixed ash and is stored in the storage tank; 0.6 part of suspension agent, 4 parts of high temperature water retainings, 4 parts of dispersion agents, 0.1 part of skimmer, 5 parts of NaCl, latex are joined in 57.35 parts of water for 3 parts, fully stir and make its dissolving, the use of can constructing after 3 weeks of circulating.
Embodiment 2
With 100 parts of H level oil well cements, 40 parts of ground silicas, the GM weighting agent is puddled evenly for 100 parts, forms mixed ash and is stored in the storage tank; 0.7 part of suspension agent, 5 parts of high temperature water retainings, 5 parts of dispersion agents, 0.1 part of skimmer, 6 parts of NaCl, latex are joined in 58 parts of water for 3 parts, fully stir and make its dissolving, the use of can constructing after 3 weeks of circulating.
Embodiment 3
With 100 parts of H level oil well cements, 40 parts of ground silicas, the GM weighting agent is puddled evenly for 120 parts, forms mixed ash and is stored in the storage tank; 0.8 part of suspension agent, 6 parts of high temperature water retainings, 4 parts of dispersion agents, 0.1 part of skimmer, 6 parts of NaCl, latex are joined in 59.72 parts of water for 3 parts, fully stir and make its dissolving, the use of can constructing after 3 weeks of circulating.
Regulate wc through grey speed under the mixed ash of Auto-regulating System of Density of Heavy Medium system control of cementing truck during cementing operation, thereby acquisition needs the high-temperature high-density grout of density.Used in the present invention GM weighting agent sphericity is high, and level prepares, and density is high, increases the weight of to needs density consumption lessly, and cement paste rheological is better.Admixtures such as used high temperature water retaining, dispersion agent, high temperature retarder, skimmer all adopt high temperature admixture series, and the shop experiment high temperature resistance can reach 160 ℃, each item stable performance.Suspension agent is D182, and water mixes the back slurry stability, shear thinning behavior is good, settled density is poor≤and 0.02gcm
3Toughening material is latex BCT-800L, helps toughness reinforcing, the anti-channeling of grout.The anti-salt of used high temperature admixture series still can play a role in salt solution preferably.
To join pulp-water and dissolve in salt and increase the weight of, dried even formation that be mixed such as GM weighting agent and cement mixed ash, again with the salt solution for preparing with mix ash mix in cementing truck and further increase the weight of, avoid all relying on weighting agent to increase the weight of to cause sedimentation stability, rheological variation.
Claims (7)
1. high-temperature high-density toughness cementing slurry is characterized in that being prepared from the component of following weight part:
2. high-temperature high-density toughness cementing slurry according to claim 1 is characterized in that: the purity of described ground silica＞96%.
3. high-temperature high-density toughness cementing slurry according to claim 1 is characterized in that: described suspension agent is the D182 suspension agent.
4. high-temperature high-density toughness cementing slurry according to claim 1 is characterized in that: described high temperature water retaining is the BXF-200L water retaining.
5. high-temperature high-density toughness cementing slurry according to claim 1 is characterized in that: described dispersion agent adopts the BCD-200L dispersion agent.
6. high-temperature high-density toughness cementing slurry according to claim 1 is characterized in that: described skimmer is the D50 skimmer.
7. high-temperature high-density toughness cementing slurry according to claim 1 is characterized in that: described latex is BCT-800L latex.
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| CN 201110403225 CN102516965B (en) | 2011-12-06 | 2011-12-06 | Cementing slurry with high temperature, high density and high toughness |
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| CN 201110403225 CN102516965B (en) | 2011-12-06 | 2011-12-06 | Cementing slurry with high temperature, high density and high toughness |
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| CN102516965A true CN102516965A (en) | 2012-06-27 |
| CN102516965B CN102516965B (en) | 2013-06-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074045A (en) * | 2012-12-16 | 2013-05-01 | 西南石油大学 | Anti-gas channeling toughening cement slurry for well cementation of small-gap annular horizontal well |
| CN103146368A (en) * | 2013-03-01 | 2013-06-12 | 中国石油大学(华东) | Elastic well cementation cement paste and preparation method thereof |
| CN104293331A (en) * | 2014-09-02 | 2015-01-21 | 中国石油集团渤海钻探工程有限公司 | High-temperature high-density cement slurry for oil field high-temperature high-pressure well cementation and preparation method thereof |
| CN107973546A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | One kind well cementation oil-well cement suspending agent and preparation method thereof and cement paste for well cementation |
| CN107973537A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | A kind of high-temperature flexible cement mortar suspending agent and preparation method thereof and cement mortar |
| CN109095822A (en) * | 2017-06-21 | 2018-12-28 | 中国石油化工股份有限公司 | A kind of low-density antileak cement composition, low-density Antileakage Cement Slurry and preparation method thereof |
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| CN101376580A (en) * | 2008-09-24 | 2009-03-04 | 西南石油大学 | Preparation of fly ash low density cement mortar |
| CN101857800A (en) * | 2010-06-28 | 2010-10-13 | 西南石油大学 | Leaking stoppage cement slurry for well cementation and preparation method thereof |
| CN102220114A (en) * | 2011-05-09 | 2011-10-19 | 大庆石油管理局 | 200-DEG C resistant cement paste for well cementation |
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2011
- 2011-12-06 CN CN 201110403225 patent/CN102516965B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101376580A (en) * | 2008-09-24 | 2009-03-04 | 西南石油大学 | Preparation of fly ash low density cement mortar |
| CN101857800A (en) * | 2010-06-28 | 2010-10-13 | 西南石油大学 | Leaking stoppage cement slurry for well cementation and preparation method thereof |
| CN102220114A (en) * | 2011-05-09 | 2011-10-19 | 大庆石油管理局 | 200-DEG C resistant cement paste for well cementation |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074045A (en) * | 2012-12-16 | 2013-05-01 | 西南石油大学 | Anti-gas channeling toughening cement slurry for well cementation of small-gap annular horizontal well |
| CN103074045B (en) * | 2012-12-16 | 2015-04-22 | 西南石油大学 | Anti-gas channeling toughening cement slurry for well cementation of small-gap annular horizontal well |
| CN103146368A (en) * | 2013-03-01 | 2013-06-12 | 中国石油大学(华东) | Elastic well cementation cement paste and preparation method thereof |
| CN104293331A (en) * | 2014-09-02 | 2015-01-21 | 中国石油集团渤海钻探工程有限公司 | High-temperature high-density cement slurry for oil field high-temperature high-pressure well cementation and preparation method thereof |
| CN107973546A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | One kind well cementation oil-well cement suspending agent and preparation method thereof and cement paste for well cementation |
| CN107973537A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | A kind of high-temperature flexible cement mortar suspending agent and preparation method thereof and cement mortar |
| CN107973537B (en) * | 2016-10-25 | 2020-08-21 | 中国石油化工股份有限公司 | High-temperature-resistant suspending agent for flexible cement slurry, preparation method of suspending agent and cement slurry |
| CN109095822A (en) * | 2017-06-21 | 2018-12-28 | 中国石油化工股份有限公司 | A kind of low-density antileak cement composition, low-density Antileakage Cement Slurry and preparation method thereof |
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| CN102516965B (en) | 2013-06-19 |
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Effective date of registration: 20201214 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106, Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |