CN1091130C - Composite acid-soluble drilling plugging agent - Google Patents
Composite acid-soluble drilling plugging agent Download PDFInfo
- Publication number
- CN1091130C CN1091130C CN 99101196 CN99101196A CN1091130C CN 1091130 C CN1091130 C CN 1091130C CN 99101196 CN99101196 CN 99101196 CN 99101196 A CN99101196 A CN 99101196A CN 1091130 C CN1091130 C CN 1091130C
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- CN
- China
- Prior art keywords
- leakage blocking
- blocking agent
- leakage
- plugging agent
- cotton seed
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Abstract
The present invention relates to a composite acid dissolving type leakage blocking agent of a drilling well. Inert hard blocking and soft blocking fiber materials are used as main raw materials, and inorganic salt is used as a reinforcing agent and a leakage blocking material with the different distribution of particle diameter sizes are prepared into the leakage blocking agent. The leakage blocking agent mainly comprises cottonseed hulls, peanut hulls, broken mica sheets, lime stone powder, acid dissolving type cement, etc. The cottonseed hulls, the peanut hulls, the broken mica sheets, the lime stone powder, the acid dissolving type cement, etc. are uniformly mixed after being pulverized. The leakage blocking agent has the advantages of simple and convenient manufacture, safe construction and pressure resistance, and the leakage blocking agent can prevent the probable permanent blocking of oil and gas strata and can prevent the leakage loss of well drilling liquid into a stratum and the pollution of the oil and gas strata. The leakage blocking agent is suitable for the leakage blocking of different gaps and deep and shallow strata; meanwhile, the leakage blocking agent conforms to technical standards, which is detected by related departments.
Description
The present invention relates to a kind of composite acid-soluble drilling plugging agent that is used for the oil drilling leak stopping
Leakage is one of factor that in the various drilling complexity situations drilling speed and drilling cost is had the greatest impact, and is the difficult problem of puzzlement oil-gas drilling.Develop the plugging agent that has different qualities in a large number on the domestic market at present, promptly directly use cotton seed hulls leak stopping, bridging plug plugging agent and uniaxial pressure encapsulant etc.Because the difference of stratum and leakage character, various plugging agents have all shown different plugging effects and adaptability.For example, plugging effect is poor in use directly to use the cotton seed hulls leak stopping, can only be used for the shallow-layer leak stopping, has " sealing up a door " (plugging agent can not enter drop ply inside) and " spuing " phenomenons such as (leaking again after stifled) to take place when using the bridging plug plugging agent; The uniaxial pressure encapsulant mainly is used in the deep layer leak stopping.The problem that the present invention is directed to existence is developed a kind of composite acid-soluble drilling plugging agent through the years of researches test.
The object of the invention is, the composite acid-soluble drilling plugging agent of development is that stifled firmly and soft stifled filamentary material is a main raw material with inertia, is toughener with inorganic salt, and the different distributions of the proportioning by preferred various types of materials and the particle diameter thickness of patching materials is made.It mainly is made up of cotton seed hulls, Pericarppium arachidis hypogaeae, fractus master slice, limestone powder, sour molten type cement etc., mixes after it is pulverized to get final product.This plugging agent is simple for production, construction safety, withstand voltage, can prevent the contingent permanent plugging of hydrocarbon zone, and prevent that drilling fluid from missing and hydrocarbon contamination in the stratum, be applicable to the leak stopping and the leak stopping of depth layer in different slits.This plugging agent detects through relevant department and all meets technological standard simultaneously.
Composite acid-soluble drilling plugging agent of the present invention, this plugging agent are that firmly stifled and soft stifled filamentary material is a main raw material by inertia, are that toughener is formed with inorganic salt; Wherein soft stifled raw material is cotton seed hulls, Pericarppium arachidis hypogaeae, and stifled firmly raw material is the fractus master slice, and inorganic salt are limestone powder, sour molten type cement; Its each component proportioning is (mass ratio): the ratio of mixture of cotton seed hulls and Pericarppium arachidis hypogaeae is 1-2: 0.5-1, the mixture of cotton seed hulls and Pericarppium arachidis hypogaeae: fractus master slice: limestone powder: sour molten type cement is than being 15-30: 5-10: 50-60: 10-15; The preparation method of this plugging agent mixes and gets final product with fractus master slice, limestone powder, sour molten type cement again at first cotton seed hulls being mixed pulverizing with Pericarppium arachidis hypogaeae.
Composite acid-soluble drilling plugging agent of the present invention, after tested: leak stopping is withstand voltage to be 690KPa, wastage is in the 30min≤40ml.
Embodiment 1 (mass ratio)
At first cotton seed hulls and Pericarppium arachidis hypogaeae are pulverized by 1: 0.5 mixed, and then with the mixture of cotton seed hulls and Pericarppium arachidis hypogaeae: fractus master slice: limestone powder: sour molten type cement, its each ratio is 15: 10: 60: 15 mix and get final product, its finished product is Powdered, during use the plugging agent for preparing is joined in the drilling fluid to get final product.
Embodiment 2 (mass ratio)
At first cotton seed hulls and Pericarppium arachidis hypogaeae are pulverized by 2: 1 mixed, and then with the mixture of cotton seed hulls and Pericarppium arachidis hypogaeae: fractus master slice: limestone powder: sour molten type cement, its each ratio is 30: 5: 50: 10 mix and get final product, its finished product is Powdered, during use the plugging agent for preparing is joined in the drilling fluid to get final product.
Claims (2)
1, a kind of composite acid-soluble drilling plugging agent is characterized in that, this plugging agent is that firmly stifled and soft stifled filamentary material is a main raw material by inertia, is that toughener is formed with inorganic salt; Wherein soft stifled raw material is cotton seed hulls, Pericarppium arachidis hypogaeae, and stifled firmly raw material is that fractus master slice, inorganic salt are limestone powder, sour molten type cement; Its each component proportioning is (mass ratio): the ratio of mixture of cotton seed hulls and Pericarppium arachidis hypogaeae is 1-2: 0.5-1, the mixture of cotton seed hulls and Pericarppium arachidis hypogaeae: fractus master slice: limestone powder: sour molten type cement is than being 15-30: 5-10: 50-60: 10-15.
2, the preparation method of composite acid-soluble drilling plugging agent according to claim 1 is characterized in that, at first cotton seed hulls is mixed pulverizing with Pericarppium arachidis hypogaeae, mixes and gets final product with fractus master slice, limestone powder, sour molten type cement again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99101196 CN1091130C (en) | 1999-02-06 | 1999-02-06 | Composite acid-soluble drilling plugging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99101196 CN1091130C (en) | 1999-02-06 | 1999-02-06 | Composite acid-soluble drilling plugging agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1263141A CN1263141A (en) | 2000-08-16 |
| CN1091130C true CN1091130C (en) | 2002-09-18 |
Family
ID=5270346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99101196 Expired - Fee Related CN1091130C (en) | 1999-02-06 | 1999-02-06 | Composite acid-soluble drilling plugging agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1091130C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418212B (en) * | 2008-11-30 | 2010-12-22 | 湖北龙海化工有限公司 | Low fluorescent film forming filtrate reducer and preparation method thereof |
| CN101389729B (en) * | 2006-02-23 | 2015-12-09 | 赫尔克里士公司 | For the raw cotton linter of the ethoxylation of well finishing liquid and workover fluid |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102199419A (en) * | 2010-03-26 | 2011-09-28 | 中国石油天然气股份有限公司 | Acid soluble cement |
| CN102410022B (en) * | 2010-09-21 | 2013-11-13 | 中国石油天然气集团公司 | Method for protecting fissured carbonate reservoir |
| CN103013479B (en) * | 2012-12-28 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司 | For sandstone coagulation slurry and the blocking method thereof of leak stopping |
| CN105112027A (en) * | 2015-09-10 | 2015-12-02 | 安徽陆海石油助剂科技有限公司 | Non-permeability slurry treating agent |
| CN107011878A (en) * | 2017-04-18 | 2017-08-04 | 北京格瑞迪斯石油技术有限公司 | A kind of compound leakage stop agent and its preparation technology |
-
1999
- 1999-02-06 CN CN 99101196 patent/CN1091130C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389729B (en) * | 2006-02-23 | 2015-12-09 | 赫尔克里士公司 | For the raw cotton linter of the ethoxylation of well finishing liquid and workover fluid |
| CN101418212B (en) * | 2008-11-30 | 2010-12-22 | 湖北龙海化工有限公司 | Low fluorescent film forming filtrate reducer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1263141A (en) | 2000-08-16 |
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