CN100556979C - A kind of self-cementing chemical leak-stopping agent for drilling and preparation method thereof - Google Patents
A kind of self-cementing chemical leak-stopping agent for drilling and preparation method thereof Download PDFInfo
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- CN100556979C CN100556979C CNB2007100152818A CN200710015281A CN100556979C CN 100556979 C CN100556979 C CN 100556979C CN B2007100152818 A CNB2007100152818 A CN B2007100152818A CN 200710015281 A CN200710015281 A CN 200710015281A CN 100556979 C CN100556979 C CN 100556979C
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- gypsum
- wingdale
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- intermediate product
- leak
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Abstract
The present invention relates to a kind of self-cementing chemical leak-stopping agent for drilling and preparation method thereof.With bauxite, Wingdale and gypsum is raw material, according to 20-40 part bauxite, 30-60 part Wingdale, the quality proportioning of 10-30 part gypsum is fired into intermediate product under 1000-1500 ℃, intermediate product is levigate, then with gypsum, Wingdale and quartz sand according to 60-90 part intermediate product, 5-15 part gypsum, 5-20 part Wingdale, the quality proportioning of 5-15 part quartz sand mixes and promptly gets the self-cementing chemical leak-stopping agent product.This plugging agent abundant raw material, with low cost, preparation method's technology is simple, and is easy to implement, and its plugging effect is better than existing chemical leak-stopping agent, has the advantage that the Applicable temperature scope is wide, blocking speed is fast, bearing capacity is strong and be applicable to the oil reservoir leak stopping.
Description
Technical field:
The invention belongs to the petroleum drilling plugging agent.
Technical background:
Leakage is to endanger one of the most serious complexcase in the Process of Oil Well Drilling, the generation meeting of leakage is made troubles to drilling engineering and is lost, expend rig time, loss drilling fluid and patching materials, cause a series of complexcase such as bit freezing, blowout, well slough, even cause well to be scrapped, but also can cause damage to oil reservoir, heavy economic losses caused.
For crack property or solution cavity severe leakage, main at present chemical leak-stopping agent leak stopping by adopting.Chemical leak-stopping agent has cement and resin two big classes, based on cement.Cement uses as plugging agent, must be earlier and water be mixed with grout, the influence factor of cement slurry property is more, as the leak stopping slurry following shortcoming is arranged: (1) is not easy to be detained at leakage channel, and Chang Yin bleeds the depths, stratum and causes leak stopping to be failed; (2) enter drop ply after, grout and local water mixed diluting cause the setting time of grout to increase, and even do not solidify, and cause the leak stopping failure; (3) owing to the coagulating property of grout, its injection length must strictly be controlled, and difficulty of construction is big.Resin uses as plugging agent, and its shortcoming is: (1) can only solidify in specific temperature range, the use temperature narrow range; (2) compare resin cost height with other plugging agent; (3) difficulty of construction is big.
Summary of the invention:
Purpose of the present invention just provides that a kind of blocking speed is fast, the use temperature scope is big, cost is low, can effectively tackle the self-cementing chemical leak-stopping agent to crack property or solution cavity severe leakage.The self-cementing chemical leak-stopping agent product is a particulate state, can pass through bridge formation filling and the action of gravity of self, in hole, crack and solution cavity, be detained, chemical reaction takes place between each component then to some extent, in leakage channel, form perviousness adhesive bond with certain intensity, shutoff formation pore, crack and solution cavity reach the purpose of leak stopping.
The object of the present invention is achieved like this: with bauxite, Wingdale and gypsum is raw material, under 1000-1500 ℃, be fired into intermediate product, intermediate product is levigate to certain particle size, mix in proportion with gypsum, Wingdale and quartz sand then and be the self-cementing chemical leak-stopping agent product.The quality proportioning that generates bauxite, Wingdale and the gypsum of intermediate product is: 20-40 part bauxite, 30-60 part Wingdale, 10-30 part gypsum; Intermediate product, gypsum, Wingdale and quartz sand blended quality proportioning: 60-90 part intermediate product, 5-15 part gypsum, 5-20 part Wingdale, 5-15 part quartz sand.Wherein that intermediate product is levigate to 0.1-1.2mm.
Compared with prior art, the present invention has following remarkable advantage:
1, blocking speed is fast.The self-cementing chemical leak-stopping agent product is a particulate solid in irregular shape, can pass through bridge formation filling and the action of gravity of self, in hole, crack and solution cavity, be detained fast, chemical reaction takes place between each component then to some extent, in leakage channel, form perviousness adhesive bond with certain intensity, shutoff formation pore, crack and solution cavity reach the purpose of leak stopping.Plugging time was generally 5-8 hour, than the fast 7-16 of conventional chemical plugging agent hour.
2, the Applicable temperature scope is wide.The water surrounding of self-cementing chemical leak-stopping agent in normal temperature～120 ℃ can gluedly be solidified, and do not have special consolidation condition, can be used in the drop ply of different well depths.
3, be suitable for the oil reservoir leak stopping.Self-cementing chemical leak-stopping agent adhesive bond good penetrability, and adjustable, regulation range is 1-10 μ m
2, can not block oil reservoir after the leak stopping.
4, the drop ply bearing capacity after the leak stopping is strong, is difficult for duplicating leakage.Self-cementing chemical leak-stopping agent adhesive bond ultimate compression strength height, and adjustable, the ultimate compression strength regulation range is respectively 3-10Mpa, and drop ply is in case blocked the difficult leakage phenomena that occurs again in follow-up drilling process by chemical leak-stopping agent.
5, with clear water or drilling fluid both portability, transport fluid that must configure dedicated, construction is simple, and cost is low.
Below in conjunction with embodiment the present invention is further described, but should not be considered as the present invention is limited by following specific examples.Components contents is represented with weight among each embodiment.
Embodiment 1, drops into 40 parts of bauxite in reactor, 50 Wingdales, and 10 parts of gypsum were fired under 1100 ℃ 8 hours, got intermediate product after the cooling, and intermediate product is levigate to 0.1-1.2mm.In mixing machine, drop into 60 parts of intermediate products by the quality proportioning, 15 parts of gypsum, 20 parts of Wingdales, 5 parts of quartz sands mix and promptly get product.
Embodiment 2, drop into 30 parts of bauxite in reactor, 40 Wingdales, and 20 parts of gypsum were fired under 1300 ℃ 8 hours, got intermediate product after the cooling, and intermediate product is levigate to 0.1-1.2mm.In mixing machine, drop into 75 parts of intermediate products by the quality proportioning, 5 parts of gypsum, 15 parts of Wingdales, 5 parts of quartz sands mix and promptly get product.
Embodiment 3, drop into 30 parts of bauxite in reactor, 55 Wingdales, and 15 parts of gypsum were fired under 1350 ℃ 8 hours, got intermediate product after the cooling, and intermediate product is levigate to 0.1-1.2mm.In mixing machine, drop into 65 parts of intermediate products by the quality proportioning, 10 parts of gypsum, 20 parts of Wingdales, 5 parts of quartz sands mix and promptly get product.
Embodiment 4, drop into 35 parts of bauxite in reactor, 45 Wingdales, and 20 parts of gypsum were fired under 1250 ℃ 8 hours, got intermediate product after the cooling, and intermediate product is levigate to 0.1-1.2mm.In mixing machine, drop into 70 parts of intermediate products by the quality proportioning, 10 parts of gypsum, 10 parts of Wingdales, 10 parts of quartz sands mix and promptly get product.
Embodiment 5, drop into 40 parts of bauxite in reactor, 50 Wingdales, and 10 parts of gypsum were fired under 1250 ℃ 8 hours, got intermediate product after the cooling, and intermediate product is levigate to 0.1-1.2mm.In mixing machine, drop into 60 parts of intermediate products by the quality proportioning, 15 parts of gypsum, 20 parts of Wingdales, 5 parts of quartz sands mix and promptly get product.
Claims (2)
1, a kind of self-cementing chemical leak-stopping agent, it is characterized in that, it is to prepare as follows and get: with bauxite, Wingdale and gypsum is raw material, according to 20-40 part bauxite, 30-60 part Wingdale, the quality proportioning of 10-30 part gypsum is fired into intermediate product under 1000-1500 ℃, intermediate product is levigate, then with gypsum, Wingdale and quartz sand according to 60-90 part intermediate product, 5-15 part gypsum, 5-20 part Wingdale, the quality proportioning of 5-15 part quartz sand mixes and promptly gets the self-cementing chemical leak-stopping agent product.
2, by the described self-cementing chemical leak-stopping agent of claim 1, it is characterized in that intermediate product levigate to 0.1-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100152818A CN100556979C (en) | 2007-07-11 | 2007-07-11 | A kind of self-cementing chemical leak-stopping agent for drilling and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100152818A CN100556979C (en) | 2007-07-11 | 2007-07-11 | A kind of self-cementing chemical leak-stopping agent for drilling and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101089115A CN101089115A (en) | 2007-12-19 |
| CN100556979C true CN100556979C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100152818A Expired - Fee Related CN100556979C (en) | 2007-07-11 | 2007-07-11 | A kind of self-cementing chemical leak-stopping agent for drilling and preparation method thereof |
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| CN (1) | CN100556979C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10266617B2 (en) | 2013-08-14 | 2019-04-23 | China Petroleum & Chemical Corporation | Cationic copolymer and use thereof in lost circulation additive |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453475B (en) * | 2010-10-25 | 2013-06-26 | 中国石油化工股份有限公司 | Leak-stopping agent for petroleum drilling, preparation method, and application thereof |
| CN109679598B (en) * | 2018-12-25 | 2023-03-31 | 中石化石油工程技术服务有限公司 | Strong-wall anti-collapse water-based drilling fluid and preparation method thereof |
| CN112028507A (en) * | 2020-09-17 | 2020-12-04 | 淄博云鹤彩色水泥有限公司 | Leaking stoppage waterproofing agent prepared from waste and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351106A (en) * | 2000-10-26 | 2002-05-29 | 刘茂平 | High-water water blocking mixture and its preparing process and application |
| CN1096537C (en) * | 1999-07-12 | 2002-12-18 | 四川石油管理局川东钻探公司 | Acid-soluble plugging agent |
| CN1704559A (en) * | 2004-05-25 | 2005-12-07 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | High strength and readily soluble nano water shutoff agent |
| CN1757697A (en) * | 2005-11-07 | 2006-04-12 | 刘茂平 | Seal stoppage agent for oil-well |
-
2007
- 2007-07-11 CN CNB2007100152818A patent/CN100556979C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096537C (en) * | 1999-07-12 | 2002-12-18 | 四川石油管理局川东钻探公司 | Acid-soluble plugging agent |
| CN1351106A (en) * | 2000-10-26 | 2002-05-29 | 刘茂平 | High-water water blocking mixture and its preparing process and application |
| CN1704559A (en) * | 2004-05-25 | 2005-12-07 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | High strength and readily soluble nano water shutoff agent |
| CN1757697A (en) * | 2005-11-07 | 2006-04-12 | 刘茂平 | Seal stoppage agent for oil-well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10266617B2 (en) | 2013-08-14 | 2019-04-23 | China Petroleum & Chemical Corporation | Cationic copolymer and use thereof in lost circulation additive |
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| Publication number | Publication date |
|---|---|
| CN101089115A (en) | 2007-12-19 |
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Granted publication date: 20091104 Termination date: 20100711 |