CN104250547A - Modified biogel particles blocking agent used for precision screen pipe of thick oil horizontal well - Google Patents
Modified biogel particles blocking agent used for precision screen pipe of thick oil horizontal well Download PDFInfo
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- CN104250547A CN104250547A CN201310266794.1A CN201310266794A CN104250547A CN 104250547 A CN104250547 A CN 104250547A CN 201310266794 A CN201310266794 A CN 201310266794A CN 104250547 A CN104250547 A CN 104250547A
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- China
- Prior art keywords
- screen pipe
- horizontal well
- thick oil
- modification biological
- biological glue
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
Abstract
The invention provides a modified biogel particles blocking agent used for a precision screen pipe of a thick oil horizontal well as well as a preparation method thereof. The blocking agent is composed of a main body material, an additive and water, the main body material is composed of 60-90% of G grade cement and 40-10% of fly ash with weight ratio; the additive is composed of 0.5-5% of plant polysaccharide, 1-8% of modified biogel and 10-20% of inorganic salt with weight ratio; and the main body material and the water are blended by weight ratio of 1:6-10. The preparation method of the blocking agent comprises the following steps: weighing the modified biogel and inorganic salt, uniformly mixing, placing in a reaction vessel filled with clear water, uniformly stirring; then adding a reinforcing agent plant polysaccharide in the reaction vessel, stirring while adding, adding the G grade cement and fly ash after uniformly stirring, and then uniformly stirring. The blocking agent has the characteristics of good dispersibility, no gel breaking, fast dissolving speed, easy pumping and environmental protection.
Description
Technical field
The present invention relates to thick oil horizontal well precise screen pipe water blockoff field plugging agent, be specifically related to that a kind of dispersing property is good, precise screen pipe penetrance is strong, the broken glue of plastic, the environment-friendly modified xanthan gum particle plugging agent that plugging strength is high.
Background technology
At present, thick oil horizontal well gel particle plugging agent have that crosslinking degree is low, bad dispersibility, sealed depth are shallow, resistance to acids and bases and salinity is poor, not easily water-soluble, pollute the shortcomings such as stratum.In thick oil horizontal well section, because the dispersing property of plugging agent is poor, action of gravity makes plugging agent layering, uniformly across precise screen pipe, can not cause sealed depth and insufficient strength.In addition, gel-type particle plugging agent generally adopts polyacrylamide as dispersion agent, and this dispersion agent does not tolerate high salinity and potential of hydrogen, and easily converts strong carcinogen on stratum, and pollute local water, formation pollutes.
Summary of the invention
In order to overcome above-mentioned technical problem, the object of the present invention is to provide modification biological glue particle plugging agent that a kind of dispersing property for precise screen pipe water plugging of horizontal well is good, sieving rate is high, plugging strength is high and preparation method thereof.
In order to reach above-mentioned purpose, an object of the present invention realizes by following technical measures:
Thick oil horizontal well precise screen pipe modification biological glue particle plugging agent of the present invention is made up of material of main part, admixture and water, and described material of main part is that the G level oil well cement of 60-90% and the flyash of 40%-10% form by weight ratio; Described admixture is respectively the toughener sugar of 0.5%-5% by accounting for material of main part weight ratio, the dispersion agent of 1-8% and the solubilizing agent of 10-20% form, and described material of main part and water are blent by weight 1:6-10.
One of the object of the invention also realizes by following technical measures:
Described toughener is that plant is many, and described dispersion agent is modification biological glue, and described solubilizing agent is inorganic salt; Described material of main part is that the G level oil well cement of 70-80% and the flyash of 30%-20% form by weight ratio; Described admixture be respectively by accounting for material of main part weight ratio the vegetable polysaccharides of 1%-3%, the modification biological glue of 4%-6% and 15% inorganic salt form; Described material of main part and water are blent by weight 1:8; Described vegetable polysaccharides is Rhizoma amorphophalli powder; Described modification biological glue is xanthan gum; Described inorganic salt are NaCl.
Two of object of the present invention realizes by following technical measures:
Prepare a method for thick oil horizontal well precise screen pipe of the present invention remodeling xanthan gum particle plugging agent, carry out as follows:
A, take remodeling xanthan gum and inorganic salt, mix, put into the reactor filling clear water, stir;
B, in step a reactor, add toughener vegetable polysaccharides, limit edged stirs, and adds G level oil well cement and flyash, stir and get final product after stirring.
The selection of admixture of the present invention, can improve dispersing property, improves plugging strength.By investigating the performance of modification biological glue granule type plugging agent, consider the singularity of thick oil horizontal well section precise screen pipe, the present invention adds dispersion agent modification biological glue, increase dispersiveness and the bridging property of cement, evenly be mixed in cement for modification biological glue can be made, add inorganic salt as solubilizing agent, improve the solubleness of xanthan gum in cement; Screen suitable toughener, adding of vegetable polysaccharides, greatly strengthen the plugging strength of plugging agent.
Thick oil horizontal well precise screen pipe modification biological glue particle plugging agent of the present invention compared with prior art, have the following advantages: its when thick oil horizontal well shutoff can rapid solution in injection water, good fluidity, easily to pump into, oil reservoir can be entered with even suspension gel particle form carry out deep through precise screen pipe and adjust stifled, plugging strength is high, thus reaches the once success of thick oil horizontal well shutoff.The features such as this plugging agent has the not broken glue of good dispersity, plastic, dissolution rate pumps into soon, easily, environmental protection.
embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A, take 1Kg xanthan gum and 10Kg NaCl, mix, put into the reactor filling 600Kg clear water, stir;
B, in step a reactor, add the Rhizoma amorphophalli powder of 0.5Kg particle diameter 0.30mm, limit edged stirs, and adds 60KgG level oil well cement and 40Kg flyash, stir and get final product after stirring.
Embodiment 2
A, take 8Kg xanthan gum and 20Kg NaCl, mix, put into the reactor filling 1000Kg clear water, stir;
B, in step a reactor, add the Rhizoma amorphophalli powder of 5Kg particle diameter 0.15mm, limit edged stirs, and adds 90Kg G level oil well cement and 10Kg flyash, stir and get final product after stirring.
Embodiment 3
A, take 5Kg xanthan gum and 15Kg NaCl, mix, put into the reactor filling 800Kg clear water, stir;
B, in step a reactor, add the Rhizoma amorphophalli powder of 2.5Kg particle diameter 0.20mm, limit edged stirs, and adds 75Kg G level oil well cement and 25Kg flyash, stir and get final product after stirring.
Embodiment 4
A, take 4Kg xanthan gum and 15Kg NaCl, mix, put into the reactor filling 800Kg clear water, stir;
B, in step a reactor, add the Rhizoma amorphophalli powder of 1Kg particle diameter 0.20mm, limit edged stirs, and adds 70Kg G level oil well cement and 30Kg flyash, stir and get final product after stirring.
Embodiment 5
A, take 6Kg xanthan gum and 15Kg NaCl, mix, put into the reactor filling 800Kg clear water, stir;
B, in step a reactor, add the Rhizoma amorphophalli powder of 3Kg particle diameter 0.25mm, limit edged stirs, and adds 80Kg G level oil well cement and 20Kg flyash, stir and get final product after stirring.
Claims (7)
1. thick oil horizontal well precise screen pipe modification biological glue particle plugging agent, is made up of material of main part, admixture and water, it is characterized in that, described material of main part is that the G level oil well cement of 60-90% and the flyash of 40%-10% form by weight ratio; Described admixture is made up of the solubilizing agent accounting for material of main part weight ratio and be respectively the toughener of 0.5%-5%, the dispersion agent of 1-8% and 10-20%, and described material of main part and water are blent by weight 1:6-10.
2. thick oil horizontal well precise screen pipe modification biological glue particle plugging agent as claimed in claim 1, it is characterized in that, described toughener is vegetable polysaccharides, and described dispersion agent is modification biological glue, and described solubilizing agent is inorganic salt..
3. thick oil horizontal well precise screen pipe modification biological glue particle plugging agent as claimed in claim 1, it is characterized in that, described material of main part is that the G level oil well cement of 70-80% and the flyash of 30%-20% form by weight ratio; Described admixture be respectively by accounting for material of main part weight ratio the vegetable polysaccharides of 1%-3%, the modification biological glue of 4%-6% and 15% inorganic salt form; Described material of main part and water are blent by weight 1:8.
4. thick oil horizontal well precise screen pipe modification biological glue particle plugging agent as claimed in claim 2 or claim 3, it is characterized in that, described vegetable polysaccharides is Rhizoma amorphophalli powder.
5. thick oil horizontal well precise screen pipe modification biological glue particle plugging agent as claimed in claim 2 or claim 3, it is characterized in that, described modification biological glue is xanthan gum.
6. thick oil horizontal well precise screen pipe modification biological glue particle plugging agent as claimed in claim 2 or claim 3, it is characterized in that, described inorganic salt are NaCl.
7. a thick oil horizontal well precise screen pipe preparation method for modification biological glue particle plugging agent as claimed in claim 1 or 2, is characterized in that, carry out as follows:
A, take remodeling xanthan gum and inorganic salt, mix, put into the reactor filling clear water, stir;
B, in step a reactor, add toughener vegetable polysaccharides, limit edged stirs, and adds G level oil well cement and flyash, continue to stir and get final product after stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266794.1A CN104250547B (en) | 2013-06-29 | 2013-06-29 | Modified biogel particles blocking agent used for precision screen pipe of thick oil horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310266794.1A CN104250547B (en) | 2013-06-29 | 2013-06-29 | Modified biogel particles blocking agent used for precision screen pipe of thick oil horizontal well |
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| Publication Number | Publication Date |
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| CN104250547A true CN104250547A (en) | 2014-12-31 |
| CN104250547B CN104250547B (en) | 2017-05-24 |
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| CN201310266794.1A Expired - Fee Related CN104250547B (en) | 2013-06-29 | 2013-06-29 | Modified biogel particles blocking agent used for precision screen pipe of thick oil horizontal well |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037819A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | Environmental-friendly plugging agent |
| CN105038742A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | High-elasticity waterproof plugging agent |
| CN107936935A (en) * | 2017-11-22 | 2018-04-20 | 烟台智本知识产权运营管理有限公司 | A kind of method of coal-fired waste residue recycling |
| CN116064022A (en) * | 2021-11-01 | 2023-05-05 | 中国石油化工股份有限公司 | Oil field profile control water shutoff composition and preparation method and application thereof |
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| SU1617133A1 (en) * | 1988-10-17 | 1990-12-30 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Plugging composition |
| US6800129B2 (en) * | 2003-01-30 | 2004-10-05 | W. R. Grace & Co.-Conn. | High solids pumpable cement additives |
| CN1237145C (en) * | 2003-06-26 | 2006-01-18 | 大庆油田有限责任公司 | Cement fly ash profile control agent for plugging of oil and water well |
| US7727945B2 (en) * | 2005-07-15 | 2010-06-01 | Akzo Nobel N.V. | Modified polysaccharides |
| CN102391845B (en) * | 2011-09-13 | 2016-07-27 | 任丘市奥源石油科技有限公司 | A kind of composite chemical blocking agent |
| CN102746835B (en) * | 2012-07-17 | 2014-07-09 | 新疆华油技术服务股份有限公司 | Carbonatite oil well density selectivity water shutoff agent and preparation process thereof |
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2013
- 2013-06-29 CN CN201310266794.1A patent/CN104250547B/en not_active Expired - Fee Related
Non-Patent Citations (1)
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| 叶楚平等: "《天然胶黏剂》", 31 January 2004 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105037819A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | Environmental-friendly plugging agent |
| CN105038742A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | High-elasticity waterproof plugging agent |
| CN107936935A (en) * | 2017-11-22 | 2018-04-20 | 烟台智本知识产权运营管理有限公司 | A kind of method of coal-fired waste residue recycling |
| CN116064022A (en) * | 2021-11-01 | 2023-05-05 | 中国石油化工股份有限公司 | Oil field profile control water shutoff composition and preparation method and application thereof |
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| CN104250547B (en) | 2017-05-24 |
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Granted publication date: 20170524 Termination date: 20190629 |