CN103362532A - Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf - Google Patents
Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf Download PDFInfo
- Publication number
- CN103362532A CN103362532A CN2013102690153A CN201310269015A CN103362532A CN 103362532 A CN103362532 A CN 103362532A CN 2013102690153 A CN2013102690153 A CN 2013102690153A CN 201310269015 A CN201310269015 A CN 201310269015A CN 103362532 A CN103362532 A CN 103362532A
- Authority
- CN
- China
- Prior art keywords
- goaf
- gas
- active carbon
- activated carbon
- foam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000006260 foam Substances 0.000 title claims abstract description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000000084 colloidal system Substances 0.000 title abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005187 foaming Methods 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 15
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 229920001285 xanthan gum Polymers 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003431 cross linking reagent Substances 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 abstract description 2
- 238000005188 flotation Methods 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 239000002562 thickening agent Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000003292 glue Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000002966 serum Anatomy 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
A colloid foam containing activated carbon for preventing and treating the gas emission in goaf is prepared through dispersing activated carbon powder in water, adding a certain amount of thickening agent to obtain a thickened solution containing activated carbon, adding a little of cross-linking agent and foaming agent to the solution, and mechanically stirring for foaming under the action of air. After the colloid foam is injected into a goaf through a mine grouting pipeline, large-area coal flotation can be covered and coal body cracks can be plugged, free gas in the goaf can be fully adsorbed by using active carbon, and meanwhile, a film-shaped colloid covering similar to cloth can be formed on the surface of the coal body, so that the aim of durably and effectively inhibiting the gas emission of the coal body is fulfilled. The colloid foam containing the activated carbon has obvious effect of preventing and treating gas emission in the goaf, and has low cost and wide application prospect.
Description
Technical field
The present invention relates to a kind of colloidal foam preparation method who contains active carbon, be particularly useful for wrapping up goaf float coal, shutoff coal body crack, absorption goaf free gas and the membranaceous colloidal foam preparation method who prevents the similar cloth of Gas.
Background technology
Mine gas is one of Major Natural Disasters of China's coal-mine exploitation.In recent years, along with the high speed development of mining technique equipment, China has emerged the intensive mine of large quantities of high-yield and high-efficiencies take comprehensive mechanical coal mining as feature.Because mining rate is large, the concentration of production, fltting speed are fast, causes the goaf to leave over residual coal and increases, float coal goes out a large amount of gas at goaf drainage.When a large amount of gas is accumulated in the goaf, often leaked out and bring work plane into and cause Air return corner even return airway gas exceeding limit and affect production.At present, the technical measures that the control goaf gas of commonly using is both at home and abroad gushed out mainly contain interim damp sheet, pump drainage blower fan are set, increase air quantity, high-order horizontal drilling and goaf gas extraction etc.These methods are effective to low gaseous mine or the little mine of output, but along with mine to the depths digging, gas bearing capacity increases gradually, low gaseous mine changes high gas or projecting mine into, the low yield mine is integrated also can change the high-yield and high-efficiency mine into, and this moment just can not effective solution Air return corner gas exceeding limit problem by above-mentioned method.Simultaneously because damp sheet is positioned at the edge, goaf, the spoil that the goaf falls very easily destroys damp sheet, causes the damp sheet increase of leaking out; Setting up the pump drainage blower fan need to increase cost, and affects the limited usable floor area in tunnel; Unlimited increase air quantity also is impossible; High-order horizontal drilling and goaf gas extraction ubiquity construction works amount are large, and the extraction time is long, and anxiety is taken in extraction, the problems such as disposable input and operating cost height.Therefore, to gush out be a difficult problem of domestic and international extensive concern to the control goaf gas.
Gush out in order to prevent and treat goaf gas, the present invention is intended to seek a kind of free gas to be had adsorption capacity, compactness is strong, cementing properties is good membranaceous plugging material, research and develop out the colloidal foam that contains active carbon of a kind of quick, whole parcel goaf float coal, with these technical measures that replace existing control goaf gas commonly used to gush out, thereby suppress goaf float coal Gas, prevent and stop gas and pour into upper corner and cause the gas exceeding limit phenomenon, realized purpose of the present invention.
Summary of the invention
Technical problem: the objective of the invention is for the problem that exists in the prior art, provide a kind of can be on a large scale, uniform fold goaf float coal and shutoff coal body crack, and at the membranaceous colloid overburden of the surface-crosslinked formation of coal body, can adsorb the goaf free gas and continue the permanent colloidal foam preparation method who contains active carbon who suppresses Gas.
Technical scheme: of the present invention for the colloidal foam preparation method who contains active carbon that gushes out of control goaf gas, comprise the steps:
Step 1: with particle diameter less than 500 microns wood activated charcoal powder, xanthans adhesion agent and water in mass ratio for 1:0.03:10 prepares, stir, make the multiviscosisty solution that contains active carbon;
Step 2: add simultaneously silicate of soda and dodecyl benzyl dimethyl ammonium chloride in containing the multiviscosisty solution of active carbon, silicate of soda, dodecyl benzyl dimethyl ammonium chloride and multiviscosisty solution are 3:4:1000 in mass ratio, preparation, and the formation mixed solution stirs;
Step 3: continue to introduce air in mixed solution, fully stirring, foaming form the colloidal foam that contains active carbon.
The volume of air that continues to introduce in the described mixed solution is 10~30 times of water volume.
Beneficial effect: of the present invention for the colloidal foam that contains active carbon gushed out of control goaf gas, by in water, adding activated carbon powder, adhesion agent, crosslinking agent and blowing agent, and under the effect of air, stir the multi-phase complex mixed system that foaming forms with physical mechanical.Mixed solution is by the colloidal foam that contains active carbon of a large amount of uniform and smooth of rear formation that foam, and volume increases considerably.After the mine grouting pipeline is delivered to the goaf with it, can pile up in the goaf large tracts of land, can both cover and shutoff low, eminence float coal.Stop injection after forming the tight colloidal foam of one deck on the coal body surface, the adhesion agent in the foam wall and crosslinking agent generation cross-linking reaction form and have certain viscoplasticity film at this moment, and this overburden can wrap up coal body and shutoff crack very densely.Free gas in the coal body is by charcoal absorption, and the outwards loss owing to the film effect, and the colloidal foam that therefore contains active carbon can effectively suppress lastingly the interior gas of coal body and outwards gush out.In addition, because adhesion agent has good shear thinning characteristic, so slurries obvious cross-linking reaction can not occur at once in the process of mechanical agitation foaming and transportation.After foam was transported to the goaf by the road, covers the coal body surface, shear action disappeared, and cross-linking reaction becomes obviously between the adhesion agent in the foam wall and the crosslinking agent at this moment, and the viscosity of system increases sharply, and has the effect of delayed cross-linking.Therefore this new colloidal foamed material effectively shutoff coal body crack, cover coal body, absorption goaf free gas reaches and suppresses the purpose that the goaf float coal discharges gas.The present invention has the characteristics such as method is simple, consumption is few, cost is low, safety and environmental protection, and gelation time is controlled, is with a wide range of applications.
The specific embodiment
The colloidal foam preparation method who contains active carbon that control goaf gas of the present invention is gushed out is as follows: add diameter less than 500 microns activated carbon powder in water, its quality is 1/10 of water quality; Add simultaneously xanthans as adhesion agent, the mass percent of xanthans and water is 0.3%, stirs, and forms the multiviscosisty solution with certain viscosity; In having certain density multiviscosisty solution, add simultaneously silicate of soda crosslinking agent and dodecyl benzyl dimethyl ammonium chloride blowing agent, the mass percent of silicate of soda and water is 0.3%, the mass percent of dodecyl benzyl dimethyl ammonium chloride blowing agent and water is 0.4%, mixes to form the mixed serum that contains multi-phase ingredients; Continue to introduce air in mixed serum, fully stir, form colloidal foam, the cumulative volume of introducing air is 10~30 times of water volume.With helicoidal pump the colloidal foam that configures is transported to the goaf through mining grouting pipe, makes its uniform fold leave over residual coal surface and shutoff coal body crack in the goaf, can play the effect that suppresses the coal Gas.
The present invention has obtained better effects through field experiment:
Embodiment one: refreshing eastern Coal Corporation boolean platform colliery belongs to modernized high-yield and high-efficiency mine, and work plane daily output 15000t because mining rate is large, causes the upper corner gas density higher, and conventional method is difficult to effectively solve the gas of upper corner.Employing is with the method for adopting with the glue injection body foam, solid phase be diameter less than the active carbon of 500 μ m, gas phase is the compressed air that air compressor produces, liquid phase is underground water.Configuration active carbon, adhesion agent and water quality are than being the multiviscosisty solution of 1:0.03:10, after stirring, in this multiviscosisty solution, add simultaneously silicate of soda and dodecyl benzyl dimethyl ammonium chloride, the in mass ratio 3:4:1000 preparation of silicate of soda, dodecyl benzyl dimethyl ammonium chloride and multiviscosisty solution, the formation mixed solution stirs.Control this mixed solution flow this moment is 15~20m
3/ h, compressed air require are 450m
3/ h constantly is input in the agitator by pipeline, and ceaselessly stirs with impeller-agitator, and foaming forms colloidal foam.The colloidal foam that generates is utilized mine grouting pipeline injection experiments object 22104 fully mechanized coal face goafs, each 12h that annotates continuously, can see having colloidal foam diffuse out behind the support this moment, illustrates that colloidal foam more evenly has been full of goaf, support rear portion, covers Residual coal in goaf.This work plane begins to inject the colloidal foam experiment on September 30th, 2012, each 12h that annotates continuously; After this work plane is whenever pushed ahead and was just annotated colloidal foam in 5 days one time.After having annotated colloidal foam at every turn, the content of test record upper corner gas density, compare with the upper corner gas density content that records before the glue injection body foam not, the injection before and after the upper corner variation ofgas density trend of surveying as shown in table 1, can find out, significantly decline occurs in institute's upper corner gas density of surveying after adopting colloidal foam, can effectively guarantee the safe back production of mine.
Upper corner variation ofgas density trend before and after the table 1 glue injection body foam
Embodiment two: state throws new collection two ore deposits and belongs to high gas and outburst mine, and along with to deep regional-750m horizontal-extending, gas emission sharply increases, and the phenomenon of transfiniting is arranged when causing back production face gas.Employing is with the method for adopting with the glue injection body foam, with diameter less than the active carbon of 500 μ m as solid phase, the compressed air that air compressor produces is as gas phase, underground water is as liquid phase.Configuration active carbon, adhesion agent and water quality are than being the multiviscosisty solution of 1:0.03:10, after stirring, in this multiviscosisty solution, add simultaneously silicate of soda and dodecyl benzyl dimethyl ammonium chloride, the in mass ratio 3:4:1000 preparation of silicate of soda, dodecyl benzyl dimethyl ammonium chloride and multiviscosisty solution, the formation mixed solution stirs.Control this mixed liquor flow this moment is 10~15m
3/ h, compressed air require are 350m
3/ h constantly is input in the agitator by pipeline, and ceaselessly stirs with impeller-agitator, and foaming forms colloidal foam.Utilize the mine grouting pipeline to be injected into 1603 working face face goafs the colloidal foam that generates, each 12h that annotates continuously, a large amount of colloidal foams is full of goaf, support rear portion more equably, covers Residual coal in goaf.This work plane is annotated 12h in beginning on December 31st, 2011 glue injection body foam at every turn continuously; After this work plane is whenever pushed ahead and was just annotated colloidal foam in 5 days one time.Each has annotated colloidal foam after, the content of test record upper corner gas density compares with the upper corner gas density content that records before the glue injection body foam not, injection front and back upper corner variation ofgas density trend is as shown in table 2.As can be seen from Table 2, significant decline occurs in upper corner gas behind the employing colloidal foam, guaranteed the mine safety back production.
Upper corner variation ofgas density trend before and after the table 2 glue injection body foam
Claims (2)
1. one kind is used for the colloidal foam preparation method who contains active carbon that the control goaf gas is gushed out, and it is characterized in that comprising the steps:
Step 1: with particle diameter less than 500 microns wood activated charcoal powder, xanthans adhesion agent and water in mass ratio for 1:0.03:10 prepares, stir, make the multiviscosisty solution that contains active carbon;
Step 2: add simultaneously silicate of soda and dodecyl benzyl dimethyl ammonium chloride in containing the multiviscosisty solution of active carbon, silicate of soda, dodecyl benzyl dimethyl ammonium chloride and multiviscosisty solution are 3:4:1000 in mass ratio, preparation, and the formation mixed solution stirs;
Step 3: continue to introduce air in mixed solution, fully stirring, foaming form the colloidal foam that contains active carbon.
2. according to claim 1 a kind of for the colloidal foam that contains active carbon gushed out of control goaf gas, it is characterized in that: the volume of air that continues to introduce in the described mixed solution is 10~30 times of water volume.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310269015.3A CN103362532B (en) | 2013-06-28 | 2013-06-28 | Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310269015.3A CN103362532B (en) | 2013-06-28 | 2013-06-28 | Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103362532A true CN103362532A (en) | 2013-10-23 |
CN103362532B CN103362532B (en) | 2015-06-24 |
Family
ID=49364711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310269015.3A Expired - Fee Related CN103362532B (en) | 2013-06-28 | 2013-06-28 | Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103362532B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104945684A (en) * | 2015-06-05 | 2015-09-30 | 安徽理工大学 | Aqueous film-forming gel foam for preventing gas emission in goaf and preparation method thereof |
CN105201546A (en) * | 2015-09-21 | 2015-12-30 | 河南理工大学 | Device and method for improving gas extraction concentration |
CN108136340A (en) * | 2016-08-25 | 2018-06-08 | 浙江大学 | A kind of full carbon film based on activated carbon and its preparation method and application |
CN109971041A (en) * | 2019-03-13 | 2019-07-05 | 中国矿业大学 | A kind of mining fire extinguishing colloidal foam gelatinizing agent and preparation method thereof |
CN110564391A (en) * | 2019-08-31 | 2019-12-13 | 湖南科技大学 | Nano microbubble material for in-situ consolidation modification of pulverized coal and preparation method thereof |
CN112174572A (en) * | 2020-08-14 | 2021-01-05 | 中铁十六局集团铁运工程有限公司 | Composite material for adsorbing gas overflowing from tunnel face and construction method thereof |
CN112592703A (en) * | 2020-12-16 | 2021-04-02 | 湖南科技大学 | Elastic cementing breathable material for preventing and treating instability of hole wall of drilled hole and preparation method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU779585A1 (en) * | 1977-12-15 | 1980-11-15 | Кузбасский Политехнический Институт | Method of preventing self-ignition of coal |
CN101021160A (en) * | 2007-03-05 | 2007-08-22 | 煤炭科学研究总院重庆分院 | High power inhibition foam for preventing and controlling coal self-ignition and generating device thereof |
CN101265811A (en) * | 2008-04-28 | 2008-09-17 | 中国矿业大学 | Preparation method for multiphase gel foam for controlling coal autogeneous combustion |
CN103570375A (en) * | 2013-10-10 | 2014-02-12 | 中国矿业大学 | Preparation method and device of foam gel for coal spontaneous combustion treatment |
-
2013
- 2013-06-28 CN CN201310269015.3A patent/CN103362532B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU779585A1 (en) * | 1977-12-15 | 1980-11-15 | Кузбасский Политехнический Институт | Method of preventing self-ignition of coal |
CN101021160A (en) * | 2007-03-05 | 2007-08-22 | 煤炭科学研究总院重庆分院 | High power inhibition foam for preventing and controlling coal self-ignition and generating device thereof |
CN101265811A (en) * | 2008-04-28 | 2008-09-17 | 中国矿业大学 | Preparation method for multiphase gel foam for controlling coal autogeneous combustion |
CN103570375A (en) * | 2013-10-10 | 2014-02-12 | 中国矿业大学 | Preparation method and device of foam gel for coal spontaneous combustion treatment |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104945684A (en) * | 2015-06-05 | 2015-09-30 | 安徽理工大学 | Aqueous film-forming gel foam for preventing gas emission in goaf and preparation method thereof |
CN105201546A (en) * | 2015-09-21 | 2015-12-30 | 河南理工大学 | Device and method for improving gas extraction concentration |
CN108136340A (en) * | 2016-08-25 | 2018-06-08 | 浙江大学 | A kind of full carbon film based on activated carbon and its preparation method and application |
CN109971041A (en) * | 2019-03-13 | 2019-07-05 | 中国矿业大学 | A kind of mining fire extinguishing colloidal foam gelatinizing agent and preparation method thereof |
CN109971041B (en) * | 2019-03-13 | 2020-07-07 | 中国矿业大学 | Mining fire prevention colloid foam gelling agent and preparation method thereof |
CN110564391A (en) * | 2019-08-31 | 2019-12-13 | 湖南科技大学 | Nano microbubble material for in-situ consolidation modification of pulverized coal and preparation method thereof |
CN110564391B (en) * | 2019-08-31 | 2021-06-29 | 湖南科技大学 | Nano microbubble material for in-situ consolidation modification of pulverized coal and preparation method thereof |
CN112174572A (en) * | 2020-08-14 | 2021-01-05 | 中铁十六局集团铁运工程有限公司 | Composite material for adsorbing gas overflowing from tunnel face and construction method thereof |
CN112592703A (en) * | 2020-12-16 | 2021-04-02 | 湖南科技大学 | Elastic cementing breathable material for preventing and treating instability of hole wall of drilled hole and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN103362532B (en) | 2015-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103362532B (en) | Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf | |
US20220195284A1 (en) | Temporary plugging agent and preparation method thereof, and method for temporary plugging and fracturing of high-temperature reservoir | |
US10421897B2 (en) | Method of treating a well with the formation of proppant structures (variants) | |
CN1831294B (en) | Nitrogen filling foam water-control oil-increasing technology | |
CN103265938B (en) | Foam-like fracturing system, preparation method and filling method thereof | |
CN105754569B (en) | Low-permeability oil reservoir water injection well pretreating agent and preparation method thereof | |
CN111793489B (en) | In-situ gas-generating foaming gel system for carbonate reservoir and application method thereof | |
CN102965091B (en) | Pressure reducing and injection increasing agent used for ultralow permeability oil field and preparation method thereof | |
CN104531105B (en) | Temporary plugging workover fluid for low-pressure sandstone reservoir gas well and preparation method | |
CN103075938B (en) | Containing the water stemming material of blowing agent | |
CN103450870B (en) | The drag reducer of pressure break is hidden for unconventionaloil pool | |
CN112727535A (en) | Liquid CO2Coal body cracking and permeability increasing method with cooperative drilling and water filling | |
Li et al. | Soil conditioning tests on sandy soil for earth pressure balance shield tunneling and field applications | |
CN104119853A (en) | A preparing method of a high-strength high-temperature-resistance air foam fracturing fluid | |
CN108003854A (en) | Channeling sealing agent for buried hill fractured reservoir and injection method thereof | |
CN104033143A (en) | Formation method of nitrogen foam ground for oil-gas well fracturing | |
CN109749748A (en) | A kind of rich water round gravel stratum shield sediment improvement method and sediment improvement agent | |
CN109294539A (en) | Fire flooding well environment-friendly channeling sealing agent and preparation method and application thereof | |
CN102191025A (en) | Broad-spectrum deformable while-drilling leak-proof sealing agent | |
CN104832144A (en) | Method for improving petroleum recovery efficiency through air foam flooding assisted by microorganisms | |
CN107165612A (en) | A kind of method for removing blockage for Oil/gas Well | |
CN104446640A (en) | Foam tail mortar and pulping and grouting process thereof | |
CN115341952A (en) | Carbon dioxide adsorption-solidification sealing-up method based on goaf solid waste filling | |
CN107794031B (en) | Nitrogen foam fracturing fluid system suitable for low-pressure lean water-containing coal bed gas well | |
Huang et al. | Comparative experimental study on the effects of water-and foam-based fracturing fluids on multiscale flow in coalbed methane |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20190628 |