CN101671551B - Multifunctional connecting bridging agent - Google Patents
Multifunctional connecting bridging agent Download PDFInfo
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- CN101671551B CN101671551B CN2009100165696A CN200910016569A CN101671551B CN 101671551 B CN101671551 B CN 101671551B CN 2009100165696 A CN2009100165696 A CN 2009100165696A CN 200910016569 A CN200910016569 A CN 200910016569A CN 101671551 B CN101671551 B CN 101671551B
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- bridging agent
- multifunctional connecting
- cotton
- stratum
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Abstract
The invention discloses a multifunctional connecting bridging agent comprising the following materials in parts by weight: 30-40 parts of cotton petals, 10-20 parts of furfural, 10-20 parts of corn stalk cores, 5-10 parts of purpose-made wooden meals and 5-10 parts of cotton barks. The multifunctional connecting bridging agent is prepared by uniformly stirring and mixing the materials in parts by weight by a conventional preparation method. The invention has the advantages of extensive material sources, no toxin or pollution, simple and convenient construction technology, good connection property in a large crack, a large karst cave, a subterranean river and a serious voided leaking layer of a stratum, large net forming area, high bridging capability, and the like and is widely used in oil and geological exploration technologies and especially suitable for the plugging construction of the large crack, the large karst cave, the subterranean river and the serious voided stratum.
Description
One, technical field
The present invention relates to the drilling leakage blockage bridging agent, particularly a kind of multifunctional connecting bridging agent.
Two, background technology
In the petroleum drilling; Large-scale pernicious leakage is like bad grounds such as large fracture, cavern, stratum emptying, underground underground river, the serious deficits in stratum; Materials such as general at present employing nut-shell, Pericarppium arachidis hypogaeae, sawdust, cotton seed hull, sheet mica, rubber grain, high expanded polymer carry out leak stopping; Above-mentioned substance can play the leak stopping effect in the ordinary course of things, but there is following shortcoming and defect: 1. do not have effect, and consume a large amount of patching materialss; 2. plugging time is long, very easily causes down hole problem; 3. large fracture, cavern stratum, serious stratum in debt are difficult to solve shutoff; When 4. the hardness of stifled agent material and particle diameter are improper, can not be pumped into leakage channel, more can not get into to connect in the leakage channel and build bridge; More shape can not reticulate structure, can not reduce the leakage space of leakage channel, in leakage channel, can not be detained, pile up; Cause plugging agent in leakage channel, to run off fast; Cause repeatedly repeatedly that the phenomenon of leak stopping happens occasionally, reduced plugging effect, influenced drilling rate.
Three, summary of the invention
The purpose of this invention is to provide a kind of multifunctional connecting bridging agent, adopt the grain diameter of multiple size, like cotton lobe; Volume when preparing on ground is little, and rolling is curved, after getting into leakage channel; Under the impact of pressure and drilling fluid, cotton lobe volume rapid expansion becomes stretch-like, forms wire drawing and arranges net; Very easily in the leakage stratum, link and build bridge, the shortcoming or the deficiency that overcome effectively or avoid existing in the above-mentioned prior art improve plugging effect and drilling speed effectively
Its composition of multifunctional connecting bridging agent of the present invention and content, content are weight part: cotton lobe 30-40; Furfural 10-20; Corn tangerine core 10-20; Special wood chip 5-10; Cotton skin 5-10.
Compound method: above-mentioned substance, gets final product with conventional compound method mixing and stirring under the normal temperature and pressure by its component and content.
The present invention has following advantage or beneficial effect compared with prior art:
1, has curling, stretch characteristics; The particle diameter rolling was curved when prepared on ground, was prone to pump into, and can be extended into net rapidly behind the entering leakage channel.
2, have efficient linkage function, between the particle, clinging power is strong between particle and the borehole wall, plugging agent is prone in leakage channel, be detained.
3, can form reticulated structure fast, the reticulated structure of formation has that resistance is big, ductility is strong, become web area big, and plugging agent is prone in leakage channel, pile up.
4, have very strong bridge formation function:, make large fracture, major path, become cracklin, passage aisle, can effectively reduce the leakage space and reduce the leakage degree.
5, construction safety very easily pumps into, and does not damage the pump packing ring, and the leak stopping success ratio is high
6, nontoxic, pollution-free, be particularly suitable for the blocking construction on large fracture, cavern, subterranean stream and serious stratum in debt.
Five, embodiment:
A kind of multifunctional connecting bridging agent, its composition and content, content are weight part: cotton lobe 30-40; Furfural 10-20; Corn tangerine core 10-20; Special wood chip 5-10; Cotton skin 5-10;
Compound method: above-mentioned substance, mixes with conventional compound method under the normal temperature and pressure by its component and content.During use, in plugging drilling fluid, add the multifunctional connecting bridging agent of the present invention of the 2%-15% of people's plugging drilling fluid total amount.Provide specific embodiment below:
The 1st example
Cotton lobe 30 furfurals 10 corn tangerine cores 10 special wood chip 5 cotton skins 5.Above-mentioned substance by its component and content, under the normal temperature and pressure, is mixed with conventional compound method.The multifunctional connecting bridging agent of the present invention that in plugging drilling fluid, adds people's plugging drilling fluid total amount 2%.
The 2nd example
Cotton lobe 34 furfurals 15 corn tangerine cores 13 special wood chip 7 cotton skins 7.Above-mentioned substance by its component and content, under the normal temperature and pressure, is mixed with conventional compound method.The multifunctional connecting bridging agent of the present invention that in plugging drilling fluid, adds people's plugging drilling fluid total amount 8%.
The 3rd example
Cotton lobe 37; Furfural 18; Corn tangerine core 16; Special wood chip 9; Cotton skin 9.Above-mentioned substance by its component and content, under the normal temperature and pressure, is mixed with conventional compound method.The multifunctional connecting bridging agent of the present invention that in plugging drilling fluid, adds people's plugging drilling fluid total amount 12%.
The 4th example
Cotton lobe 40; Furfural 20; Corn tangerine core 20; Special wood chip 10; Cotton skin 10.Above-mentioned substance by its component and content, at normal temperatures and pressures, is mixed with conventional compound method.The multifunctional connecting bridging agent of the present invention that in plugging drilling fluid, adds people's plugging drilling fluid total amount 15%.
The 1st example, the 2nd example, the 3rd example are embodiment, and the 4th example is a comparative example, have plugging effect very in trying out at the scene.
Claims (1)
1. multifunctional connecting bridging agent, its component and content, content are weight part:
Compound method: above-mentioned substance, mixes with conventional compound method under the normal temperature and pressure by its component and content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100165696A CN101671551B (en) | 2009-06-17 | 2009-06-17 | Multifunctional connecting bridging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100165696A CN101671551B (en) | 2009-06-17 | 2009-06-17 | Multifunctional connecting bridging agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101671551A CN101671551A (en) | 2010-03-17 |
| CN101671551B true CN101671551B (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100165696A Active CN101671551B (en) | 2009-06-17 | 2009-06-17 | Multifunctional connecting bridging agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101671551B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740351B (en) * | 2013-12-31 | 2016-08-17 | 东营泰尔石油技术有限公司 | Low-density consolidation type sealing agent |
| CN111040748B (en) * | 2019-12-20 | 2022-05-17 | 东营泰尔石油技术有限公司 | Low-density high-bridge plug plugging slurry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069945C (en) * | 1998-09-14 | 2001-08-22 | 中国科学院广州化学研究所 | Heat-resistant packering agent for oil bearing reservoirs |
| US20040127368A1 (en) * | 2002-03-05 | 2004-07-01 | Jerry Rayborn | Water-based drilling fluid additive containing talc and graphite |
| US6867170B1 (en) * | 1997-10-31 | 2005-03-15 | Boyce D. Burts, Jr. | Additive for, treatment fluid for, and method of plugging a tubing/casing annulus in a well bore |
| CN101161983A (en) * | 2007-11-28 | 2008-04-16 | 辽河石油勘探局 | Method for improving cementing plugging effect |
| CN100387678C (en) * | 2006-06-28 | 2008-05-14 | 大庆油田有限责任公司 | Oil-layer blasthole plugging agent at low temperature |
-
2009
- 2009-06-17 CN CN2009100165696A patent/CN101671551B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6867170B1 (en) * | 1997-10-31 | 2005-03-15 | Boyce D. Burts, Jr. | Additive for, treatment fluid for, and method of plugging a tubing/casing annulus in a well bore |
| CN1069945C (en) * | 1998-09-14 | 2001-08-22 | 中国科学院广州化学研究所 | Heat-resistant packering agent for oil bearing reservoirs |
| US20040127368A1 (en) * | 2002-03-05 | 2004-07-01 | Jerry Rayborn | Water-based drilling fluid additive containing talc and graphite |
| CN100387678C (en) * | 2006-06-28 | 2008-05-14 | 大庆油田有限责任公司 | Oil-layer blasthole plugging agent at low temperature |
| CN101161983A (en) * | 2007-11-28 | 2008-04-16 | 辽河石油勘探局 | Method for improving cementing plugging effect |
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| Publication number | Publication date |
|---|---|
| CN101671551A (en) | 2010-03-17 |
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