CN1096537C - Acid-soluble plugging agent - Google Patents
Acid-soluble plugging agent Download PDFInfo
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- CN1096537C CN1096537C CN99115005A CN99115005A CN1096537C CN 1096537 C CN1096537 C CN 1096537C CN 99115005 A CN99115005 A CN 99115005A CN 99115005 A CN99115005 A CN 99115005A CN 1096537 C CN1096537 C CN 1096537C
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- acid
- plugging
- leak stopping
- powder
- agent
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Abstract
The formula of the plugging agent comprises, by weight, acid-soluble chemical substance materials, bentonite powder, lime powder, calcium carbonate powder, cement and fiber materials, wherein the weight ratio of the acid-soluble chemical substance materials to the bentonite powder to the lime powder to the calcium carbonate powder to the cement is (15-45) to (5-25) to (5-30) to (5-25) to (0-40) to (0-20). The components are uniformly mixed, and then the plugging agent can be mixed with water with the weight being 2-7 times of that of the plugging agent for plugging, and can also be mixed with drilling fluid with the weight being 3-10 times of that of the plugging agent for plugging. The invention is used for well drilling plugging, has the advantages of obviously improving the bonding force and the shearing resistance between the plugging layer and the leaking layer, is particularly suitable for complex leakage control of a plurality of leaking layers with unclear leaking layers and open holes, reduces the loss time of the leakage and reduces the cost.
Description
Technical field:
The invention belongs to the drilling plugging agent technical field.
Background technology:
In the oil and gas exploration drilling well, and leakage is one of ubiquitous down hole problem.Leakage takes place, and influences bit speed, expends goods and materials and fund.How effectively leak stopping is the problem that must solve during the industrial gas oil drilling well is produced.The sealing agent of at present domestic and international prior art is broadly divided into bridging plug sealing agent, chemical leak-stopping agent, compound leakage stop agent.The bridging plug sealing agent is based on hard material, be used for plugging hole crazing seam, its advantage is that preparation is convenient, construction safety, weak point are only can carry out the shallow-layer shutoff to the crack, stop up defective tightness, sometimes owing to stop up firm inadequately, again spud in after leak stopping when causing pressure oscillation, the obstruction at stifled place can be thrown off, and occurs leakage once more.Chemical leak-stopping agent is to carry out leak stopping with chemical substance, and its advantage is that plugging effect is better, but its prescription need be according to the field condition preparation, and technology is cumbersome, and construction is difficult for grasping, and viscosity causes bit freezing than Da Yi.Compound leakage stop agent is that chemical substance and hard material etc. are prepared by a certain percentage, can overcome the deficiency of chemical leak-stopping agent and bridging plug sealing agent.The prior art sealing agent can be blocked general leakage, but for the leakage of the easy broken formation of long section and the inductivity leakage on pressure sensibility stratum, effect is not ideal enough.The application number of Zhongnan Polytechnic Univ's application is 92107169.8 " a kind of leakage blocking wall protective processing agent for well drilling ", disclose a kind of by natural vegetable powder (faber phoebe tree root powder), the drilling plugging agent that humic acid and derivative thereof, tackifier, flocculant and expanding material are mixed with, different with the present patent application.The application number of Sichuan Petroleum Administration Chuandong Drilling Company's application is 95113228.8 " a kind of compound leakage stop agent for drilling and production technology thereof ", a kind of sealing agent of being made up of inertia plant granular materials, inertia flaky material, fibrous material, macromolecular compound and reinforcing agent is disclosed, also different with the present patent application.
Summary of the invention
Technical problem to be solved by this invention provides a kind of acid soluble leak stopping agent that the leakage channel of crack and fragmentation can be bonded to an integral body.
The technical scheme that solves this technical problem is as follows: acid soluble leak stopping agent, form by solubility in acid chemical substance material, bentonite in powder, pulverized limestone, Paris white, cement and fibrous material.It act as:
Solubility in acid chemical substance material: have higher sour molten rate, itself have certain adhesive power and anti-pressure ability, dehydration forms and stops up fast, can adopt sour molten diverting agent, also can adopt Diesel.
Bentonite in powder: its effect is inflatable filling, forms the calcification gluing with the pulverized limestone effect under certain temperature and pressure, the swell soil that can adopt various places to produce.
Pulverized limestone: solidify but its effect is the calcification gluing, strengthen each material adhesive strength, and dissolve in acid, the lime that can adopt various places to produce.
Paris white: but slit between each material of filling, the compactness and the fastness of enhancing leak stopping layer, and theobromine is molten, and the Paris white that can adopt various places to produce comprises thick, thin, calcium carbonate superfine powder powder.
Cement: rise and solidify coalescence effect by force, look the drop ply temperature and select different model cement for use.
Fibrous material: form the fiber reinforcement structure, gain in strength, can select uniaxial pressure sealer, flake asbestos and mica sheet for use.
The weight ratio prescription of each constituent is as follows:
Solubility in acid chemical substance material 15-45 bentonite in powder 5-25
Pulverized limestone 5-30 Paris white 5-25
Cement 0-40 fibrous material 0-20
Be mixed with sealing agent in above ratio, can mix use, also can use with drilling fluid mixed with water.When mixing with water, each component of this sealing agent is mixed, the water that is incorporated as 2～7 times of mixture weight mixes, and is used for leak stopping; During with drilling fluid mixed, be incorporated as the drilling fluid mixed of 3～10 times of mixture weight, be used for leak stopping.
Beneficial effect: can obviously improve bonding force and anti-shearing force between obstruction and drop ply.The stifled slurry that is made into by this sealing agent, after only running into drop ply and promptly pressure reduction being arranged, just can carry out leak stopping by quick dehydration formation leak stopping ring, thereby can seek drop ply automatically, being particularly suitable for unclear the reaching with the complicated leakage of a plurality of drop plies of bore hole of drop ply administers, can reduce leakage lost time, shorten well construction period, reduce the complex accident incidence, reduce the drilling well integrated cost, tangible economic benefit is arranged.
The specific embodiment:
Sealing agent of the present invention, three embodiment of each constituent preparation weight ratio are as follows:
Embodiment 1: solubility in acid chemical substance material 45 bentonite in powder 20
Pulverized limestone 20 Paris whites 15
Fibrous material 12
Embodiment 2: solubility in acid chemical substance material 35 bentonite in powder 25
Pulverized limestone 25 Paris whites 20
Cement 25
Embodiment 3: solubility in acid chemical substance material 15 bentonite in powder 20
Pulverized limestone 20 Paris whites 15
Cement 30 fibrous materials 8
Claims (6)
1. an acid soluble leak stopping agent is characterized in that being made up of solubility in acid chemical substance material, bentonite in powder, pulverized limestone, Paris white, cement and fibrous material, and its weight ratio prescription is:
Solubility in acid chemical substance material 15-45
Bentonite in powder 5-25
Pulverized limestone 5-30
Paris white 5-25
Cement 0-40
Fibrous material 0-20
After above constituent mixes, can be mixed for leak stopping, also can be used for leak stopping with drilling fluid mixed for mixture weight 3-10 times with water for mixture weight 2-7 times.
2. according to the described a kind of acid soluble leak stopping agent of claim 1, it is characterized in that wherein solubility in acid chemical substance material is sour molten diverting agent.
3. according to the described a kind of acid soluble leak stopping agent of claim 1, it is characterized in that solubility in acid chemical substance material wherein is Diesel.
4. according to the described a kind of acid soluble leak stopping agent of claim 1, it is characterized in that fibrous material wherein is the uniaxial pressure sealer.
5. according to the described a kind of acid soluble leak stopping agent of claim 1, it is characterized in that fibrous material wherein is a flake asbestos.
6. according to the described a kind of acid soluble leak stopping agent of claim 1, it is characterized in that fibrous material wherein is a mica sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115005A CN1096537C (en) | 1999-07-12 | 1999-07-12 | Acid-soluble plugging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115005A CN1096537C (en) | 1999-07-12 | 1999-07-12 | Acid-soluble plugging agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1280239A CN1280239A (en) | 2001-01-17 |
| CN1096537C true CN1096537C (en) | 2002-12-18 |
Family
ID=5278028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99115005A Expired - Fee Related CN1096537C (en) | 1999-07-12 | 1999-07-12 | Acid-soluble plugging agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1096537C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100556979C (en) * | 2007-07-11 | 2009-11-04 | 中国石油大学(华东) | Self-cementing chemical plugging agent for well drilling and preparation method thereof |
| CN101311243B (en) * | 2007-05-25 | 2010-05-19 | 四川仁智油田技术服务股份有限公司 | Temporary blocking agent for hydrocarbon reservoir crack |
| CN101693827B (en) * | 2009-06-17 | 2012-05-30 | 东营泰尔石油技术有限公司 | Coagulation type composite plugging agent |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525985B (en) * | 2009-04-10 | 2012-06-20 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Process for plugging bored well by forming cork for plugging |
| CN103509534B (en) * | 2012-06-29 | 2016-03-30 | 中国石油化工股份有限公司 | Leak-stopping agent for petroleum drilling |
| CN103965847B (en) * | 2013-01-30 | 2016-06-08 | 中国石油天然气股份有限公司 | Consolidated leakage-proof plugging agent |
| CN104212421B (en) * | 2013-06-05 | 2017-11-10 | 中国石油天然气股份有限公司 | Gas invasion preventing agent for plugging cracks while drilling and preparation method |
| CN104152125B (en) * | 2014-08-16 | 2017-08-25 | 成都汉元君业油田技术有限公司 | A kind of high dehydration solidification pressure-bearing sealing agent |
| CN105154046A (en) * | 2015-07-24 | 2015-12-16 | 成都理工大学 | Plugging slurry for fractured reservoir and temporary plugging and unplugging method for fractured reservoir |
| CN105623632A (en) * | 2016-03-10 | 2016-06-01 | 中国石油天然气集团公司 | Acid soluble curing plugging agent |
| CN109705828A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | A kind of high temperature resistant sealing agent and preparation method thereof |
| CN112195017A (en) * | 2020-10-10 | 2021-01-08 | 蒙吉光 | Plugging agent, preparation method and application thereof in well drilling plugging |
| CN114439414A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | A process method for temporarily sealing well by using drilling fluid automatic thickening plug |
| CN112778983A (en) * | 2020-12-18 | 2021-05-11 | 西南石油大学 | While-drilling plugging agent, preparation method of while-drilling plugging agent and application of while-drilling plugging agent in water-based drilling fluid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1078031A1 (en) * | 1982-04-05 | 1984-03-07 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Plugging composition for isolating absorption zones |
| US4629575A (en) * | 1982-09-03 | 1986-12-16 | Sbp, Inc. | Well drilling and production fluids employing parenchymal cell cellulose |
| CN1051957A (en) * | 1989-11-20 | 1991-06-05 | 辽河石油勘探局钻井一公司 | Drilling plugging agent |
| US5179076A (en) * | 1990-06-01 | 1993-01-12 | Exxon Production Research Company | Rheologically-stable water-based high temperature drilling fluid |
| CN1084875A (en) * | 1992-09-30 | 1994-04-06 | 中南工业大学 | A kind of leakage blocking wall protective processing agent for well drilling |
-
1999
- 1999-07-12 CN CN99115005A patent/CN1096537C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1078031A1 (en) * | 1982-04-05 | 1984-03-07 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Plugging composition for isolating absorption zones |
| US4629575A (en) * | 1982-09-03 | 1986-12-16 | Sbp, Inc. | Well drilling and production fluids employing parenchymal cell cellulose |
| CN1051957A (en) * | 1989-11-20 | 1991-06-05 | 辽河石油勘探局钻井一公司 | Drilling plugging agent |
| US5179076A (en) * | 1990-06-01 | 1993-01-12 | Exxon Production Research Company | Rheologically-stable water-based high temperature drilling fluid |
| CN1084875A (en) * | 1992-09-30 | 1994-04-06 | 中南工业大学 | A kind of leakage blocking wall protective processing agent for well drilling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311243B (en) * | 2007-05-25 | 2010-05-19 | 四川仁智油田技术服务股份有限公司 | Temporary blocking agent for hydrocarbon reservoir crack |
| CN100556979C (en) * | 2007-07-11 | 2009-11-04 | 中国石油大学(华东) | Self-cementing chemical plugging agent for well drilling and preparation method thereof |
| CN101693827B (en) * | 2009-06-17 | 2012-05-30 | 东营泰尔石油技术有限公司 | Coagulation type composite plugging agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1280239A (en) | 2001-01-17 |
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