CN101089116A - Adaptive leak preventing and stopping agent for drilling fluid - Google Patents
Adaptive leak preventing and stopping agent for drilling fluid Download PDFInfo
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- CN101089116A CN101089116A CN 200710015282 CN200710015282A CN101089116A CN 101089116 A CN101089116 A CN 101089116A CN 200710015282 CN200710015282 CN 200710015282 CN 200710015282 A CN200710015282 A CN 200710015282A CN 101089116 A CN101089116 A CN 101089116A
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- drilling fluid
- stopping agent
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- stopping
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Abstract
The present invention discloses one kind of adaptive leak preventing and stopping agent for drilling fluid. The adaptive leak preventing and stopping agent consists of pre-cross linked polymer grain in 30-60 weight portions, plant fiber in 10-40 weight portions, olefin polymer in 10-20 weight portions and calcium carbonate in 5-20 weight portions. By means of the synergistic effect of the ingredients, the adaptive leak preventing and stopping agent bridges, links, fills and reinforces in the leak passage to form plugging layer, raise the pressure bearing capacity of the stratum and reach the aim of preventing and stopping leak. The adaptive leak preventing and stopping agent with elastic and deformable components is suitable for plugging pores and cracks in relative large range and can reach effective leak stopping.
Description
Technical field:
The invention belongs to the petroleum drilling fluid leak-proof sealing 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.
Most widely used general, lower-cost plugging agent is a bridge joint class plugging agent at present.The bridge joint plugging agent need be selected rational plugging agent particle size according to leakage formation fracture or pore size, and the strictness of plugging agent particle size depends on drop ply hole or flaw size.No matter which kind of reason, if patching materials and formation pore or flaw size do not match, drilling fluid can not play effective bridge blinding effect, the drilling fluid stratum of will bleeding.Although can obtain the crack or the pore dimension on stratum by getting methods such as core analysis and interpretation of logging data, but owing to got the influence of core quantity, well-log information imperfection and stratum nonuniformity, be difficult to accurately grasp the fracture width or the pore dimension on leakage stratum, this is to cause leakproof of bridge joint plugging agent and the lower major cause of leak stopping success ratio.
Summary of the invention:
It is fast that purpose of the present invention just provides a kind of blocking speed, and the shutoff scope is wide, to the adaptive leak preventing and stopping agent a little less than drop ply hole or the flaw size dependency.
The object of the present invention is achieved like this: a kind of adaptive leak preventing and stopping agent for drilling fluid, and by weight, it is by 30-60 part pre-crosslinking polymer particle, 10-40 part vegetable fibre, 10-20 part alkene monomer polymer, 5-20 part lime carbonate is formed.
The pre-crosslinking polymer preparation method of granules is among the present invention: by weight, with 20-30 part acrylamide, 5-10 part dimethyl diallyl ammonium chloride, 0.5-1.0 part ammonium persulphate and 2.0-3.0 part methylene-bisacrylamide at 40-60 ℃ of following polyreaction 3-6 hour, then through super-dry, the particle pulverizing, sieve and make.
Above-mentioned each component takes by weighing mixing by corresponding proportioning, at ambient temperature, mixes 10-30 minute in mixing tank, and packing is promptly made adaptive leak preventing and stopping agent for drilling fluid product of the present invention then.
Wherein vegetable fibre is cotton seed hulls, Pericarppium arachidis hypogaeae or corn cob; Alkene monomer polymer is partial hydrolysis polypropylene ammonium salt or partial hydrolysis polypropylene sodium salt; The lime carbonate particle diameter is 0.025-0.38mm.
Compared with prior art, the present invention has following remarkable advantage:
1, shutoff scope is wide.Leak-proof sealing agent of the present invention basic composition is the pre-crosslinking polymer particle, meet and water-solublely expand and do not dissolve, deformability with stronger elasticity and appropriateness, under the effect of pressure reduction, can enter in hole with different shapes and size or the crack and produce shutoff, the shutoff scope is wider, its plugging effect to the dependency of drop ply hole or flaw size a little less than.In addition, vegetable fibre also has certain expansion and deformation characteristic after meeting water, makes hole or crack that it can shutoff broad size range.
2, shutoff speed is fast.Bore when meeting drop ply, under flowing pressure, each component of adaptive leak preventing and stopping agent is close rapidly, be deposited in the leakage channel place, by the synergistic effect between difform each component, plugging agent is heaped fast earlier in leakage channel and is built bridge, and the back connects, fills, reinforces, and has formed the sealing ratiod height, has filled the strong plugged zone of reinforcement ability, thereby improved the bearing capacity on stratum, reached the purpose of leakproof or leak stopping.Plugging time was generally 1-2 hour, and is faster more than 1 times than conventional bridge joint plugging agent.
3, be suitable for the oil reservoir leak stopping.The plugged zone of adaptive leak preventing and stopping agent is thin, formation speed is fast, and is positioned at borehole wall surface, does not penetrate into the oil reservoir depths, as long as reversed flow is arranged, the shutoff film will be eliminated, and can not produce permanent obstruction hydrocarbon zone, do not need extra de-plugging operation, save cost, be suitable for the oil reservoir leak stopping.
4, little to the property of drilling fluid influence, both can be used for also can be used for leak stopping with boring leakproof.Pre-crosslinking polymer particle and vegetable fibre in the adaptive leak preventing and stopping agent have certain water sorption, and drilling fluid viscosity is increased to some extent; Alkene monomer polymer thickens electronegativity enhancing, the hydration shell of bentonite clay particle in the drilling fluid by adsorption, helps breaking spatial grid structure, reduces drilling fluid viscosity.By the comprehensive action of above several components, adaptive leak preventing and stopping agent is less to the performance impact of drilling fluid.
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.The consumption of component is represented with weight among each embodiment.
Embodiment 1, drops into 30 parts of pre-crosslinking polymer particles, 40 parts of vegetable fibres, 20 parts of alkene monomer polymers and 10 parts of lime carbonate in mixing machine, mixes.
Embodiment 2, drop into 40 parts of pre-crosslinking polymer particles, 30 parts of vegetable fibres, 20 parts of alkene monomer polymers and 10 parts of lime carbonate in mixing machine, mix.
Embodiment 3, drop into 50 parts of pre-crosslinking polymer particles, 20 parts of vegetable fibres, 20 parts of alkene monomer polymers and 10 parts of lime carbonate in mixing machine, mix.
Embodiment 4, drop into 30 parts of pre-crosslinking polymer particles, 40 parts of vegetable fibres, 10 parts of alkene monomer polymers and 20 parts of lime carbonate in mixing machine, mix.
Embodiment 5, drop into 50 parts of pre-crosslinking polymer particles, 35 parts of vegetable fibres, 10 parts of alkene monomer polymers and 5 parts of lime carbonate in mixing machine, mix.
Claims (5)
1, a kind of adaptive leak preventing and stopping agent for drilling fluid, it is characterized in that forming by pre-crosslinking polymer particle, vegetable fibre, alkene monomer polymer and lime carbonate, the weight ratio of various components is: 30-60 part pre-crosslinking polymer particle, 10-40 part vegetable fibre, 10-20 part alkene monomer polymer, 5-20 part lime carbonate.
2, by the described adaptive leak preventing and stopping agent for drilling fluid of claim 1, it is characterized in that said vegetable fibre is cotton seed hulls, Pericarppium arachidis hypogaeae or corn cob.
3, by the described adaptive leak preventing and stopping agent for drilling fluid of claim 1, it is characterized in that said pre-crosslinking polymer preparation method of granules is: by weight, with 20-30 part acrylamide, 5-10 part dimethyl diallyl ammonium chloride, 0.5-1.0 part ammonium persulphate and 2.0-3.0 part methylene-bisacrylamide at 40-60 ℃ of following polyreaction 3-6 hour, then through super-dry, the particle pulverizing, sieve and make.
4, by the described adaptive leak preventing and stopping agent for drilling fluid of claim 1, it is characterized in that said alkene monomer polymer is partial hydrolysis polypropylene ammonium salt or partial hydrolysis polypropylene sodium salt.
5, by the described adaptive leak preventing and stopping agent for drilling fluid of claim 1, it is characterized in that said lime carbonate particle diameter is 0.025-0.38mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015282 CN101089116A (en) | 2007-07-11 | 2007-07-11 | Adaptive leak preventing and stopping agent for drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015282 CN101089116A (en) | 2007-07-11 | 2007-07-11 | Adaptive leak preventing and stopping agent for drilling fluid |
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| Publication Number | Publication Date |
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| CN101089116A true CN101089116A (en) | 2007-12-19 |
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| CN 200710015282 Pending CN101089116A (en) | 2007-07-11 | 2007-07-11 | Adaptive leak preventing and stopping agent for drilling fluid |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061151A (en) * | 2009-11-13 | 2011-05-18 | 中国石油化工股份有限公司 | Plugging bearing material for petroleum drilling, and preparation method and application thereof |
| CN101671550B (en) * | 2009-06-17 | 2012-05-30 | 东营泰尔石油技术有限公司 | Hard compound reinforcing bridging agent |
| CN103422823A (en) * | 2012-05-18 | 2013-12-04 | 北京格瑞迪斯石油技术有限公司 | Cleaning fiber and method for using cleaning fiber for cleaning well |
| CN102061152B (en) * | 2009-11-11 | 2014-01-15 | 中国石油天然气股份有限公司 | High-strength controllable gel breaking chemical temporary plugging liquid rubber plug |
| CN103562339A (en) * | 2011-05-10 | 2014-02-05 | 陶氏环球技术有限责任公司 | Curable composition for use as lost circulation material |
| US8685900B2 (en) | 2009-04-03 | 2014-04-01 | Halliburton Energy Services, Inc. | Methods of using fluid loss additives comprising micro gels |
| CN103834373A (en) * | 2012-11-27 | 2014-06-04 | 中国石油天然气股份有限公司 | Inorganic modified copolymer plugging agent |
| CN104277800A (en) * | 2014-07-28 | 2015-01-14 | 河北永达化工有限公司 | Ideal filling film-formation wall cementing agent for drilling fluids |
| CN104388067A (en) * | 2014-10-31 | 2015-03-04 | 中国石油化工集团公司 | Compound leak preventive for oil-based drilling fluid |
| CN104726078A (en) * | 2015-03-13 | 2015-06-24 | 商南天和泥浆有限公司 | Gel plugging agent and preparation method thereof |
| CN104892836A (en) * | 2015-05-15 | 2015-09-09 | 西安理工大学 | Nano-plugging agent for oil well water plugging and preparation method thereof |
| CN105441044A (en) * | 2014-09-17 | 2016-03-30 | 中国石油化工股份有限公司 | Leak-stopping agent for oil-base drilling fluid |
| CN104119847B (en) * | 2014-08-05 | 2016-10-12 | 中国石油大学(华东) | A kind of acid-soluble compound leakage stop agent and application thereof |
| CN106010485A (en) * | 2016-05-23 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Self-cementing leaking stoppage agent and leaking stoppage method |
| CN106566484A (en) * | 2016-10-31 | 2017-04-19 | 中国石油大学(华东) | Reservoir protection agent composition, drilling fluid containing reservoir protection agent composition and application thereof |
| CN106800918A (en) * | 2017-01-22 | 2017-06-06 | 中国石油大学(华东) | It is a kind of to protect water-base drilling fluid of fracture-type reservoir and its preparation method and application |
| CN106800919A (en) * | 2017-01-22 | 2017-06-06 | 中国石油大学(华东) | It is a kind of to protect water-base drilling fluid of Thief zone reservoir and its preparation method and application |
| 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 |
| CN108977183A (en) * | 2017-06-02 | 2018-12-11 | 中石化石油工程技术服务有限公司 | Adaptive sealing agent and preparation method |
| CN109233756A (en) * | 2018-10-26 | 2019-01-18 | 河南杰力沃实业有限公司 | A kind of drilling well high hard low bullet drill-feeding plugging agent of environment-friendly type and preparation method thereof |
| CN109960896A (en) * | 2019-04-17 | 2019-07-02 | 中国石油大学(华东) | The method of sealing agent flowing complexity quantitatively evaluating in complex fracture |
| CN110139909A (en) * | 2016-12-08 | 2019-08-16 | 沙特阿拉伯石油公司 | Form the leakage control slurry of the fast dewatering of acid-soluble plug |
| CN110922527A (en) * | 2019-11-15 | 2020-03-27 | 中国海洋石油集团有限公司 | Flexible material composition, flexible material and preparation method thereof, and plugging agent and application thereof |
| CN112063374A (en) * | 2020-10-13 | 2020-12-11 | 中海油田服务股份有限公司 | Plugging agent |
| CN112500841A (en) * | 2020-12-15 | 2021-03-16 | 济源市宏鑫实业有限公司 | Efficient plugging agent for offshore oil exploitation and preparation method thereof |
-
2007
- 2007-07-11 CN CN 200710015282 patent/CN101089116A/en active Pending
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8685900B2 (en) | 2009-04-03 | 2014-04-01 | Halliburton Energy Services, Inc. | Methods of using fluid loss additives comprising micro gels |
| CN101671550B (en) * | 2009-06-17 | 2012-05-30 | 东营泰尔石油技术有限公司 | Hard compound reinforcing bridging agent |
| CN102061152B (en) * | 2009-11-11 | 2014-01-15 | 中国石油天然气股份有限公司 | High-strength controllable gel breaking chemical temporary plugging liquid rubber plug |
| CN102061151A (en) * | 2009-11-13 | 2011-05-18 | 中国石油化工股份有限公司 | Plugging bearing material for petroleum drilling, and preparation method and application thereof |
| CN102061151B (en) * | 2009-11-13 | 2013-08-07 | 中国石油化工股份有限公司 | Plugging bearing material for petroleum drilling, and preparation method and application thereof |
| CN103562339A (en) * | 2011-05-10 | 2014-02-05 | 陶氏环球技术有限责任公司 | Curable composition for use as lost circulation material |
| CN103422823A (en) * | 2012-05-18 | 2013-12-04 | 北京格瑞迪斯石油技术有限公司 | Cleaning fiber and method for using cleaning fiber for cleaning well |
| CN103834373A (en) * | 2012-11-27 | 2014-06-04 | 中国石油天然气股份有限公司 | Inorganic modified copolymer 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 |
| CN104277800A (en) * | 2014-07-28 | 2015-01-14 | 河北永达化工有限公司 | Ideal filling film-formation wall cementing agent for drilling fluids |
| CN104119847B (en) * | 2014-08-05 | 2016-10-12 | 中国石油大学(华东) | A kind of acid-soluble compound leakage stop agent and application thereof |
| CN105441044A (en) * | 2014-09-17 | 2016-03-30 | 中国石油化工股份有限公司 | Leak-stopping agent for oil-base drilling fluid |
| CN105441044B (en) * | 2014-09-17 | 2018-08-07 | 中国石油化工股份有限公司 | A kind of oil base drilling fluid sealing agent |
| CN104388067A (en) * | 2014-10-31 | 2015-03-04 | 中国石油化工集团公司 | Compound leak preventive for oil-based drilling fluid |
| CN104388067B (en) * | 2014-10-31 | 2020-01-14 | 中国石油化工集团公司 | Composite leak-proof agent for oil-based drilling fluid |
| CN104726078A (en) * | 2015-03-13 | 2015-06-24 | 商南天和泥浆有限公司 | Gel plugging agent and preparation method thereof |
| CN104726078B (en) * | 2015-03-13 | 2017-10-10 | 商南天和泥浆有限公司 | A kind of GEL USED FOR PLUGGING WELL LOST CIRCULATION and preparation method thereof |
| CN104892836A (en) * | 2015-05-15 | 2015-09-09 | 西安理工大学 | Nano-plugging agent for oil well water plugging and preparation method thereof |
| CN106010485A (en) * | 2016-05-23 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Self-cementing leaking stoppage agent and leaking stoppage method |
| CN106566484A (en) * | 2016-10-31 | 2017-04-19 | 中国石油大学(华东) | Reservoir protection agent composition, drilling fluid containing reservoir protection agent composition and application thereof |
| CN110139909A (en) * | 2016-12-08 | 2019-08-16 | 沙特阿拉伯石油公司 | Form the leakage control slurry of the fast dewatering of acid-soluble plug |
| CN106800919A (en) * | 2017-01-22 | 2017-06-06 | 中国石油大学(华东) | It is a kind of to protect water-base drilling fluid of Thief zone reservoir and its preparation method and application |
| CN106800918A (en) * | 2017-01-22 | 2017-06-06 | 中国石油大学(华东) | It is a kind of to protect water-base drilling fluid of fracture-type reservoir and its preparation method and application |
| CN108977183A (en) * | 2017-06-02 | 2018-12-11 | 中石化石油工程技术服务有限公司 | Adaptive sealing agent and preparation method |
| CN109233756A (en) * | 2018-10-26 | 2019-01-18 | 河南杰力沃实业有限公司 | A kind of drilling well high hard low bullet drill-feeding plugging agent of environment-friendly type and preparation method thereof |
| CN109960896A (en) * | 2019-04-17 | 2019-07-02 | 中国石油大学(华东) | The method of sealing agent flowing complexity quantitatively evaluating in complex fracture |
| CN109960896B (en) * | 2019-04-17 | 2020-05-12 | 中国石油大学(华东) | Method for quantitatively evaluating flowing difficulty degree of plugging agent in complex crack |
| CN110922527A (en) * | 2019-11-15 | 2020-03-27 | 中国海洋石油集团有限公司 | Flexible material composition, flexible material and preparation method thereof, and plugging agent and application thereof |
| CN112063374A (en) * | 2020-10-13 | 2020-12-11 | 中海油田服务股份有限公司 | Plugging agent |
| CN112500841A (en) * | 2020-12-15 | 2021-03-16 | 济源市宏鑫实业有限公司 | Efficient plugging agent for offshore oil exploitation and preparation method thereof |
| CN112500841B (en) * | 2020-12-15 | 2022-09-13 | 济源市宏鑫实业有限公司 | Efficient plugging agent for offshore oil exploitation and preparation method thereof |
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Open date: 20071219 |