CN102093863A - Ultra-fine cement slurry for blocking - Google Patents
Ultra-fine cement slurry for blocking Download PDFInfo
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- CN102093863A CN102093863A CN2011100097605A CN201110009760A CN102093863A CN 102093863 A CN102093863 A CN 102093863A CN 2011100097605 A CN2011100097605 A CN 2011100097605A CN 201110009760 A CN201110009760 A CN 201110009760A CN 102093863 A CN102093863 A CN 102093863A
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- cement slurry
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- grout
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Abstract
The invention relates to ultra-fine cement slurry for blocking. The cement slurry comprises the following components in parts by weight: 100 parts of ultra-fine cement, 0.6-2.0 parts of fluid loss reducer, 0.05-0.3 part of retarder-hydroxyethylidene diphosphonic acid, 0.4 part of dispersant, 0.4 part of defoamer-tributyl phosphate and 76 parts of water. An ultra-fine cement slurry system is applicable to the circulating temperature range of 60 DEG C-90 DEG C, the 24-hour cement stone compressive strength can be above 14MPa, the thickening time of the cement slurry is adjustable within the range of 200-400 minutes, and the filtration loss is within 50mL; and the penetrating capacity of the cement slurry is strong, and a narrow silt which is 60 mu m wide can be penetrated.
Description
Technical field
The present invention relates to the petroleum drilling engineering field, especially a kind of shutoff is starched with superfine cement.
Background technology
In the water flooding later stage, adopt the mode of squeeze method to carry out the water outlet of shutoff stratum, give vent to anger, casing repairing etc. is a routine techniques.Therefore common oil well cement particle is big, is difficult for entering shutoff hole depths, and the construction success ratio is lower, uses superfine cement and carries out the shutoff operation and become a good solution.Superfine cement particle median size is generally 5～6 μ m, and therefore easier realization is to fine-pored effective shutoff.When grain diameter was little, specific surface area must increase, and caused hydrated cementitious speed sharply to accelerate, and especially under high-temperature and high-pressure conditions, was difficult to the effectively thickening time and the time of coagulation of control grout.Original superfine cement slurry system Applicable temperature can not satisfy deep-well squeeze method application requiring at 38～45 ℃.
Summary of the invention
In order to solve the problem that exists in the background technology, the invention provides a kind of shutoff starches with superfine cement, superfine cement slurry system of the present invention is suitable for 60 ℃～90 ℃ of circulating temperature scopes, cement stone ultimate compression strength reached more than the 14MPa in 24 hours, cement slurry thickening time is adjustable in 200～400min scope, and filter loss is in 50mL; The grout penetrativity is strong, the wide narrow slit of penetrable 60 μ m.
The technical solution used in the present invention is: this grout comprises following component, each component by weight ratio: 100 parts of superfine cements, 0.6～2.0 part of water retaining, 0.05～0.3 part of retardant 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 0.4 part of dispersion agent, 0.4 part of defoamer tributyl phosphate, 76 parts in water.
The present invention adopts retardant and water retaining acting in conjunction to control the hydration rate of superfine cement.Wherein the mechanism of action of retardant is: the metal ion reaction of organophosphate and cement surface generates insoluble hard shell, stops free water to continue to have cut off the hydration reaction of cement to the cement granules internal penetration, has prolonged the setting time of cement.Water retaining plays the auxiliary effect that delays hydration rate, and the bag to cement granules by polymkeric substance is applied on the one hand, and the prevention cement granules contacts with water molecules, thereby delays hydration rate; On the other hand, the Ca of the side-chain radical of polymkeric substance in can adsorbent solution
2+Thereby, delay hydration rate.By adding an amount of dispersion agent, improve the flowability of grout, reduce the grout resistance to flow, improve the penetrativity of grout.By adding the bubble that produces when defoamer is eliminated compounding cement paste, be beneficial to puddling of grout, improve cement stone compactness.
The present invention has following beneficial effect: it is 1.60g/cm that a. the present invention forms a cover density
3The superfine cement slurry system, be suitable for 60 ℃～90 ℃ of circulating temperature scopes, cement stone ultimate compression strength can both reach more than the 14MPa in 24 hours, cement slurry thickening time is adjustable in 200～400min scope, filter loss is in 50mL; B. retardant is to temperature and add change of variable and do not have strong sensitivity in the system, and cement slurry thickening time changes with the retardant dosage in the different experiments temperature and has the better linearity relation; C. the grout penetrativity is strong, the wide narrow slit of penetrable 60 μ m.The present invention can control the hydration rate of superfine cement under the high-temperature and high-pressure conditions, makes to satisfy its thickening time and time of coagulation the requirement of deep-well squeeze method working security; The present invention has improved the penetrativity of superfine cement, realizes the effective shutoff to deep formation.
Description of drawings:
Fig. 1 is the narrow slit device synoptic diagram of crossing of the present invention.
Embodiment:
One, according to " GB/T19139-2003 oil well cement test method " standard grout traditional performance of the present invention is detected.
Testing apparatus: the U.S. thousand De Le instrument companies 3170 types watt woods agitator; The U.S. thousand De Le instrument companies 8240 type High Temperature High Pressure multiviscosisty instrument; The U.S. thousand De Le instrument companies 1910 type high temperature and pressure protective cauldrons; The U.S. thousand De Le instrument companies 7120 type stirring-type filter presses.Experimental result sees Table 1.
Grout traditional performance table 1 under the differing temps
Annotate: 1) cement slurry density 1.60 g/cm
3
2) the ultimate compression strength experiment condition is 24h * 20.7Mpa, and the filter loss experiment condition is 30min * 6.9Mpa;
Testing used grout of the present invention is: superfine cement 100 Kg, water retaining 0.9 Kg, retardant 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 0.05 Kg～0.15 Kg, dispersion agent 0.4 Kg, defoamer tributyl phosphate 0.4 Kg, water 76 Kg.
Two, penetrate the narrow slit merit rating by using with lower device, experimental installation as shown in Figure 1.
With two boards about the clamp holder clamping,, measure grout mobile distance in the isolated body intermediate groove from the filling orifice injection grout of upper transparent plate.By changing the thickness of isolated body, regulate slit width, the isolated body minimum thickness is 60 μ m in this test.Test shows that the superfine cement slurry can penetrate and be full of whole slit, forms a complete and effective sealing, has illustrated that this grout has good penetrativity.
Above-mentioned superfine cement is available from building scientific and technological development company limited, model GM8000 in the Guangdong Jiangmen city; Water retaining is available from Beijing arsenic in a natural state oiling worker company limited of permanent section, model DSJ-S; Dispersion agent is available from Chengdu Chuan Feng chemical engineering limited liability company, model SXY.
Claims (1)
1. grout, this grout comprises following component, each component by weight ratio: 100 parts of superfine cements, 0.6～2.0 part of water retaining, 0.05～0.3 part of retardant 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 0.4 part of dispersion agent, 0.4 part of defoamer tributyl phosphate, 76 parts in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110009760 CN102093863B (en) | 2011-01-18 | 2011-01-18 | Ultra-fine cement slurry for blocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110009760 CN102093863B (en) | 2011-01-18 | 2011-01-18 | Ultra-fine cement slurry for blocking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102093863A true CN102093863A (en) | 2011-06-15 |
| CN102093863B CN102093863B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110009760 Active CN102093863B (en) | 2011-01-18 | 2011-01-18 | Ultra-fine cement slurry for blocking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936114A (en) * | 2012-10-12 | 2013-02-20 | 西南交通大学 | Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof |
| CN104045271A (en) * | 2013-03-15 | 2014-09-17 | 中国石油化工股份有限公司 | Plugging agent for oil field or natural gas extraction and preparation method thereof |
| CN109868125A (en) * | 2017-12-04 | 2019-06-11 | 中国石油化工股份有限公司 | A kind of deep drilling well high bearing strength sealing agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338183A (en) * | 2007-07-04 | 2009-01-07 | 中国石油集团工程技术研究院 | Anti-salt high-density cement mortar |
-
2011
- 2011-01-18 CN CN 201110009760 patent/CN102093863B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338183A (en) * | 2007-07-04 | 2009-01-07 | 中国石油集团工程技术研究院 | Anti-salt high-density cement mortar |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936114A (en) * | 2012-10-12 | 2013-02-20 | 西南交通大学 | Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof |
| CN104045271A (en) * | 2013-03-15 | 2014-09-17 | 中国石油化工股份有限公司 | Plugging agent for oil field or natural gas extraction and preparation method thereof |
| CN104045271B (en) * | 2013-03-15 | 2016-05-11 | 中国石油化工股份有限公司 | A kind of sealing agent for oil field or natural gas extraction and preparation method thereof |
| CN109868125A (en) * | 2017-12-04 | 2019-06-11 | 中国石油化工股份有限公司 | A kind of deep drilling well high bearing strength sealing agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
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| CN102093863B (en) | 2013-05-22 |
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Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee before: DA QING PETROLEUM ADMINISTRATION BUREAU |
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Effective date of registration: 20220113 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District Central Plains Road No. 99 Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee before: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. |