CN104893702A - Foam scrubbing agent used for water drainage and gas collection of water-production gas well containing H2S gas - Google Patents
Foam scrubbing agent used for water drainage and gas collection of water-production gas well containing H2S gas Download PDFInfo
- Publication number
- CN104893702A CN104893702A CN201510206749.6A CN201510206749A CN104893702A CN 104893702 A CN104893702 A CN 104893702A CN 201510206749 A CN201510206749 A CN 201510206749A CN 104893702 A CN104893702 A CN 104893702A
- Authority
- CN
- China
- Prior art keywords
- gas
- water
- foam discharging
- discharging agent
- 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
Classifications
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The present invention provides a foam scrubbing agent used for water drainage and gas collection of a water-production gas well containing H2S gas. The foam scrubbing agent included the following raw materials: 10-30% of an anionic-nonionic surfactant, 20-40% of a zwitterionic surfactant, 5-15% of an anionic surfactant and balance of deionized water. The present invention also provides a preparation method of the foam scrubbing agent, and the preparation method is as follows: the anionic-nonionic surfactant and the zwitterionic surfactant are added into a stainless steel reaction kettle in one time, and the deionized water is added to obtain a liquid mixture, the liquid mixture is heated to 40-50 DE GC, and stirred, the anionic surfactant is slowly added into the liquid mixture, and stirred to obtain the foam scrubbing agent. The foam scrubbing agent can good foaming characteristic and foam stabilization characteristic in formation water dissolved with the H2S gas.
Description
Technical field
The present invention relates to a kind of for containing H
2foam discharging agent of the water-producing gas well water pumping gas production of S gas and preparation method thereof, belongs to oil and gas exploitation field.
Background technology
Current China major part gas well enters mid-later development phase, and because reservoir pressure reduces, water-producing gas well causes hydrops in shaft bottom and pit shaft serious because of fluid-carrying capability deficiency, causes the gas well underproduction even stop-spraying.Foam drainage gas recovery technique is because its equipment is simple, strong adaptability, low cost and other advantages obtain general application in gas production industry.So-called foam drainage gas recovery technique, a certain amount of foam discharging agent is injected exactly in the recovery well of fluid-carrying capability deficiency, it is made fully to mix with shaft bottom hydrops under the stirring action of natural gas flow with shaft bottom hydrops, produce a large amount of low density resistance aqueous foam, be carried to ground with air-flow from shaft bottom, thus reach the effect of removing shaft bottom hydrops, volume increase, stable yields and extending the spray phase.The key of foam drainage gas recovery technique success or failure is the performance of foam discharging agent.Develop a series of foam discharging agent for different reservoir condition both at home and abroad at present, but not yet have anti-H
2the report of S gas foam discharging agent.These foam discharging agents are containing H
2in the gas reservoir of S gas, performance obviously declines, and seriously constrains foam drainage gas recovery technique containing H
2application in the product Gas Reservoirs of S gas.
Therefore a kind of resistance to H is researched and developed
2the foam discharging agent of S gas becomes one of this area problem demanding prompt solution.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of for containing H
2the foam discharging agent of the water-producing gas well water pumping gas production of S gas, this foam discharging agent is at the H of high density
2under S gas, there is higher whipability and foam stability, can be applicable to containing H
2in the foam drainage gas recovery technique of the water-producing gas well of S gas.
For achieving the above object, the invention provides a kind of for containing H
2the foam discharging agent of the water-producing gas well water pumping gas production of S gas, wherein: by weight percentage, the raw material composition of described foam discharging agent comprises 10-30% anion-nonionic tensio-active agent, 20-40% zwitterionics, 5-15% anion surfactant, surplus be deionized water.
In above-mentioned foam discharging agent, preferably, described anion-nonionic tensio-active agent is polyoxyethylenated alcohol sodium sulfate.
In above-mentioned foam discharging agent, preferably, described zwitterionics is AMONYL 380LC.
In above-mentioned foam discharging agent, preferably, described anion surfactant is α-sodium olefin sulfonate.
Containing H
2s gas well temperature, all far above normal temperature, is therefore improving the anti-H of foam discharging agent
2also need while S gas performance to consider its temperature tolerance, the present invention owing to have employed polyoxyethylenated alcohol sodium sulfate, it can not only make foam discharging agent be applied to temperature higher containing H
2the gasser of S gas, and good position adaptability can be had with other two kinds of tensio-active agents (AMONYL 380LC and α-sodium olefin sulfonate), form good meeting point, be conducive to the foam film that it forms dense regular on interface, thus strengthen its whipability, stability and attached take fluidity.
In gas well, common sour gas has CO
2and H
2s, and H
2s will be far longer than CO to the impact of foam discharging agent performance
2on the impact of foam discharging agent, the H that foam discharging agent provided by the invention is suitable for
2the concentration of S gas is that (this concentration is H to 200-5000ppm
2the solubleness of S gas in local water), this concentration is the concentration of a very high sour gas, owing to have employed the AMONYL 380LC in the present invention, it has stronger electronic induction effect, carboxyl in the scope that pH value is 0-14 in its structural formula is all exist with salt formula group, and foam discharging agent can be made to have good anti-H
2the performance of S gas.
The liquid rate of taking of foam discharging agent is based upon on whipability and foam stability, take fluidity be foam discharging agent final macroscopic view application measure, be based upon on the basis of rational surfactant compound system, in the synergistic situation that only can farthest play tensio-active agent at this compound system, compound system just can be made to have excellent whipability and foam stability, therefore just can bring and higher take fluidity, α-sodium olefin sulfonate in the present invention has the ability of stronger Bound Water Molecules, when carrying out composite with other two kinds of tensio-active agents, because the length of these three kinds of surfactant hydrophobic chains is suitable, good position can be formed adapt to, mutual synergy is to each other made to perform to maximum, take fluidity and reach best.
Present invention also offers a kind of method preparing above-mentioned foam discharging agent, it comprises the following steps:
Step 1: by anion-nonionic tensio-active agent with zwitterionics is disposable adds in stainless steel cauldron, then add deionized water, obtain mixing solutions, described mixing solutions is heated to 40-50 DEG C, stir;
Step 2: slowly add anion surfactant in above-mentioned mixing solutions, stirs, obtains foam discharging agent.
In the above-mentioned methods, preferably, in step 1, described stirring velocity is 200-400r/min, and churning time is 15-20min.
In the above-mentioned methods, preferably, in step 2, described stirring velocity is 200-400r/min, and churning time is 10-20min.
The present invention still further provides above-mentioned foam discharging agent and is containing H
2application in the water pumping gas production of S gas water-producing gas well, wherein: described H
2the solubleness of S in local water is that (this concentration is H to 200-5000ppm
2the solubleness of S gas in local water).
In above-mentioned application, preferably, in described gasser, the temperature of mineralized water is 80-130 DEG C.
In above-mentioned application, preferably, in described gasser, the salinity of mineralized water is 20000-200000ppm, and what can adapt to harsh high temperature and high salinity necessarily can adapt to lesser temps and salinity.
Although current tensio-active agent has a lot, finding suitable compound system, but search for a needle in a haystack, is not easy thing, and the present invention have developed and is applicable to containing H
2s gas produces the foam discharging agent of well water pumping gas production.
Provided by the invention for containing H
2the foam discharging agent of the water-producing gas well water pumping gas production of S gas, it is at H
2s concentration is that (this concentration is H to 200-5000ppm
2the solubleness of S gas in local water) local water in there is higher whipability, foam stability and take liquid rate, there is good high temperature resistance, anti-salt property.In addition, this foam discharging agent has environment friendly, low toxicity, low irritant, and its raw material sources are extensive, cheap, can sizable application at the scene.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of for containing H
2s gas produces the foam discharging agent of well water pumping gas production.
By percentage to the quality, the raw material composition of this foam discharging agent comprises: 20% polyoxyethylenated alcohol sodium sulfate, 30% AMONYL 380LC, 10% α-sodium olefin sulfonate and 40% deionized water.
The preparation method of this foam discharging agent comprises the following steps:
A, polyoxyethylenated alcohol sodium sulfate and AMONYL 380LC slowly to be added in stainless steel cauldron, then add solvent (deionized water), obtain mixing solutions, this mixing solutions is heated to 45 DEG C, stirring at low speed 15min;
B, in above-mentioned mixing solutions, slowly add α-sodium olefin sulfonate, continue stirring at low speed 10min, obtain foam discharging agent WJ-1.
Embodiment 2
Present embodiments provide a kind of for containing H
2s gas produces the foam discharging agent of well water pumping gas production.
By percentage to the quality, the raw material composition of this foam discharging agent comprises: 28% polyoxyethylenated alcohol sodium sulfate, 35% AMONYL 380LC, 14% α-sodium olefin sulfonate and 23% deionized water.
The preparation method of this foam discharging agent comprises the following steps:
A, polyoxyethylenated alcohol sodium sulfate and AMONYL 380LC slowly to be added in stainless steel cauldron, then add solvent (deionized water), obtain mixing solutions, this mixing solutions is heated to 45 DEG C, stirring at low speed 15min;
B, in above-mentioned mixing solutions, slowly add α-sodium olefin sulfonate, continue stirring at low speed 10min, obtain foam discharging agent WJ-2.
Embodiment 3
The foam discharging agent WJ-1 that the present embodiment provides above-described embodiment 1 is at different H
2initial bubbles volume V under S concentration, temperature, salinity condition
0, half foam life period t
1/2and airshed when being 5L/min the liquid carry over of 15min test.
The present embodiment instrument for testing is High Temperature High Pressure foam evaluations instrument (the High Temperature High Pressure foam evaluations instrument of this High Temperature High Pressure foam evaluations instrument described in the utility model patent of patent No. ZL201120400940.1, notification number CN202228059U); After the mineralized water of test is and analyzes according to the water of on-the-spot gasser output, adopt NaCl, CaCl
2, MgCl
2, KCl, Na
2sO
4, NaHCO
3carry out preparing and obtain; The foam discharging agent solution of test obtains after the foam discharging agent that embodiment 1 provides is dissolved in simulated formation water; Copper-bath absorbing hydrogen sulphide is adopted in test experiments.
(1) whipability of foam discharging agent and foam stability are tested:
A, temperature in evaluating apparatus is risen to nominative testing temperature;
B, in evaluating apparatus, pump into a certain amount of hydrochloric acid soln;
C, again by 200mL, mass concentration is that the foam discharging agent solution of 3 ‰ (densitometers by tensio-active agent) pumps into evaluating apparatus;
D, in stink cupboard, a certain amount of sodium sulphite is dissolved in 10mL distilled water, pumps into evaluating apparatus;
E, pressure rise to 1MPa (nitrogen), record initial bubbles volume and half foam life period.
(2) fluidity of taking of foam discharging agent is tested:
A, temperature in evaluating apparatus is risen to nominative testing temperature;
B, in evaluating apparatus, pump into a certain amount of hydrochloric acid soln;
C, be that the foam discharging agent solution of 3% (densitometer by tensio-active agent) pumps into evaluating apparatus by 200mL mass concentration again;
In d, stink cupboard, a certain amount of sodium sulphite is dissolved in 10mL distilled water, pumps into evaluating apparatus;
E, nitrogen is pumped in evaluating apparatus with the speed of 5L/min, collect and record the liquid carry over of 15min.
Test result is as shown in table 1.
Table 1 test result
Foam discharging agent provided by the invention is at H as can be seen from Table 1
2s concentration range is have higher whipability, foam stability in 200-5000ppm and take liquid rate, has good high temperature resistance, anti-salt property.
Claims (10)
1. one kind for containing H
2the foam discharging agent of the water-producing gas well water pumping gas production of S gas, wherein: by weight percentage, the raw material composition of described foam discharging agent comprises 10-30% anion-nonionic tensio-active agent, 20-40% zwitterionics, 5-15% anion surfactant, surplus be deionized water.
2. foam discharging agent according to claim 1, wherein: described anion-nonionic tensio-active agent is polyoxyethylenated alcohol sodium sulfate.
3. foam discharging agent according to claim 1, wherein: described zwitterionics is AMONYL 380LC.
4. foam discharging agent according to claim 1, wherein: described anion surfactant is α-sodium olefin sulfonate.
5. prepare a method for the foam discharging agent described in any one of claim 1-4, it comprises the following steps:
Step 1: by anion-nonionic tensio-active agent with zwitterionics is disposable adds in stainless steel cauldron, then add deionized water, obtain mixing solutions, described mixing solutions is heated to 40-50 DEG C, stir;
Step 2: slowly add anion surfactant in above-mentioned mixing solutions, stirs, obtains foam discharging agent.
6. method according to claim 5, wherein: in step 1, described stirring velocity is 200-400r/min, and churning time is 15-20min.
7. method according to claim 5, wherein: in step 2, described stirring velocity is 200-400r/min, and churning time is 10-20min.
8. the foam discharging agent described in any one of claim 1-4 is containing H
2application in the water pumping gas production of S gas water-producing gas well, wherein: described H
2the solubleness of S in local water is 200-5000ppm.
9. application according to claim 8, wherein: the temperature of the mineralized water in described gasser is 80-130 DEG C.
10. application according to claim 8, wherein: the salinity of the mineralized water in described gasser is 20000-200000ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206749.6A CN104893702B (en) | 2015-04-28 | 2015-04-28 | One kind is used to contain H2The foam discharging agent of the water-producing gas well water pumping gas production of S gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206749.6A CN104893702B (en) | 2015-04-28 | 2015-04-28 | One kind is used to contain H2The foam discharging agent of the water-producing gas well water pumping gas production of S gases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104893702A true CN104893702A (en) | 2015-09-09 |
| CN104893702B CN104893702B (en) | 2017-09-01 |
Family
ID=54026674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510206749.6A Active CN104893702B (en) | 2015-04-28 | 2015-04-28 | One kind is used to contain H2The foam discharging agent of the water-producing gas well water pumping gas production of S gases |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104893702B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525899A (en) * | 2016-01-26 | 2016-04-27 | 重庆科技学院 | Special foam drainage method for low-gas-yield water-flooded well, foam drainage agent and foam drainage device |
| CN106190089A (en) * | 2016-07-19 | 2016-12-07 | 郑州鑫源防磨耐材有限公司 | A kind of pressure break foam discharging agent and preparation method thereof |
| CN108373912A (en) * | 2018-02-02 | 2018-08-07 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of salt-resisting high-temperature-resisting foam discharging agent and preparation method thereof |
| CN109679615A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | The method that ultra-deep gas well uses the water pumping gas production of foaming water discharge agent composition |
| CN109762547A (en) * | 2017-11-09 | 2019-05-17 | 中国石油天然气股份有限公司 | Foaming water discharge agent |
| CN111635746A (en) * | 2020-05-22 | 2020-09-08 | 四川花语精细化工有限公司 | Special methanol, condensate oil and high mineralized water resistant betaine foam scrubbing agent for oil and gas fields and preparation method thereof |
| CN113512412A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Foam scrubbing agent, preparation method and application thereof |
| CN113528110A (en) * | 2021-08-24 | 2021-10-22 | 成都钠镁化学有限公司 | Foam drainage agent for exploitation of ancient sulfur-containing natural gas and preparation method thereof |
| CN114933892A (en) * | 2022-05-27 | 2022-08-23 | 郑州市新郑梅久实业有限公司 | Foam discharging agent for liquid discharging and gas production of natural gas well and preparation method and application thereof |
| CN115322764A (en) * | 2022-07-28 | 2022-11-11 | 中国石油化工股份有限公司 | High-temperature-resistant slow-release foam scrubbing agent and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580705A (en) * | 2009-06-12 | 2009-11-18 | 中国石油大学(华东) | Foaming agent with low gas liquid ratio foam for common heavy oil reservoir and injection method thereof |
| CN102504788A (en) * | 2011-10-25 | 2012-06-20 | 中国石油天然气股份有限公司 | Foaming agent suitable for oil-field development |
| CN102911654A (en) * | 2012-10-31 | 2013-02-06 | 中国石油天然气股份有限公司 | Foaming agent for efficiently carrying fluid and sand for gas well and preparation method and application of foaming agent |
| US20130292121A1 (en) * | 2012-04-15 | 2013-11-07 | Cesi Chemical, Inc. | Surfactant formulations for foam flooding |
| CN104087270A (en) * | 2014-07-17 | 2014-10-08 | 中国石油大学(华东) | Salt-tolerance temperature-resistance foaming agent |
| CN104342097A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Solid foam drainage agent applied to gas field |
-
2015
- 2015-04-28 CN CN201510206749.6A patent/CN104893702B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580705A (en) * | 2009-06-12 | 2009-11-18 | 中国石油大学(华东) | Foaming agent with low gas liquid ratio foam for common heavy oil reservoir and injection method thereof |
| CN102504788A (en) * | 2011-10-25 | 2012-06-20 | 中国石油天然气股份有限公司 | Foaming agent suitable for oil-field development |
| US20130292121A1 (en) * | 2012-04-15 | 2013-11-07 | Cesi Chemical, Inc. | Surfactant formulations for foam flooding |
| CN102911654A (en) * | 2012-10-31 | 2013-02-06 | 中国石油天然气股份有限公司 | Foaming agent for efficiently carrying fluid and sand for gas well and preparation method and application of foaming agent |
| CN104342097A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Solid foam drainage agent applied to gas field |
| CN104087270A (en) * | 2014-07-17 | 2014-10-08 | 中国石油大学(华东) | Salt-tolerance temperature-resistance foaming agent |
Non-Patent Citations (2)
| Title |
|---|
| 刘宏生 等: "α-烯烃磺酸钠复配体系的泡沫性能", 《青岛科技大学（自然科学版）》 * |
| 艾天敬 等: "张家场气田泡沫排水采气与气井防腐配伍性研究及应用", 《钻采工艺》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525899A (en) * | 2016-01-26 | 2016-04-27 | 重庆科技学院 | Special foam drainage method for low-gas-yield water-flooded well, foam drainage agent and foam drainage device |
| CN106190089A (en) * | 2016-07-19 | 2016-12-07 | 郑州鑫源防磨耐材有限公司 | A kind of pressure break foam discharging agent and preparation method thereof |
| CN109679615A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | The method that ultra-deep gas well uses the water pumping gas production of foaming water discharge agent composition |
| CN109762547A (en) * | 2017-11-09 | 2019-05-17 | 中国石油天然气股份有限公司 | Foaming water discharge agent |
| CN108373912A (en) * | 2018-02-02 | 2018-08-07 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of salt-resisting high-temperature-resisting foam discharging agent and preparation method thereof |
| CN113512412A (en) * | 2020-04-10 | 2021-10-19 | 中国石油化工股份有限公司 | Foam scrubbing agent, preparation method and application thereof |
| CN113512412B (en) * | 2020-04-10 | 2022-11-04 | 中国石油化工股份有限公司 | Foam scrubbing agent, preparation method and application thereof |
| CN111635746A (en) * | 2020-05-22 | 2020-09-08 | 四川花语精细化工有限公司 | Special methanol, condensate oil and high mineralized water resistant betaine foam scrubbing agent for oil and gas fields and preparation method thereof |
| CN111635746B (en) * | 2020-05-22 | 2022-10-18 | 四川花语精细化工有限公司 | Special methanol, condensate oil and high mineralized water resistant betaine foam scrubbing agent for oil and gas fields and preparation method thereof |
| CN113528110A (en) * | 2021-08-24 | 2021-10-22 | 成都钠镁化学有限公司 | Foam drainage agent for exploitation of ancient sulfur-containing natural gas and preparation method thereof |
| CN113528110B (en) * | 2021-08-24 | 2022-11-04 | 成都钠镁化学有限公司 | Foam drainage agent for exploitation of antique sulfur-containing natural gas and preparation method thereof |
| CN114933892A (en) * | 2022-05-27 | 2022-08-23 | 郑州市新郑梅久实业有限公司 | Foam discharging agent for liquid discharging and gas production of natural gas well and preparation method and application thereof |
| CN115322764A (en) * | 2022-07-28 | 2022-11-11 | 中国石油化工股份有限公司 | High-temperature-resistant slow-release foam scrubbing agent and preparation method thereof |
| CN115322764B (en) * | 2022-07-28 | 2023-08-15 | 中国石油化工股份有限公司 | Anti-high Wen Huan foam-retarding agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104893702B (en) | 2017-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104893702A (en) | Foam scrubbing agent used for water drainage and gas collection of water-production gas well containing H2S gas | |
| CN102851015B (en) | Foam drainage agent with high temperature resistance, high condensate oil resistance and hypersalinity resistance and preparation method | |
| CN102504794B (en) | Hydrophobically associating polymer and mixed surfactant binary compound oil displacement system | |
| CN102952531B (en) | Surfactant for displacing oil of offshore oilfield and preparation method thereof | |
| CN103059826B (en) | Foam water-drainage agent and its aqueous solution | |
| CN102676142B (en) | Condensate oil foam discharging agent applied to natural gas extraction | |
| CN102504788B (en) | Foaming agent suitable for oil-field development | |
| CN104974730A (en) | High temperature-resistant high-mineralization degree foam scrubbing agent and its preparation method and use | |
| CN105199702A (en) | Foam scrubbing agent for resisting condensate oil and methyl alcohol and preparation method thereof | |
| CN102977872B (en) | A kind of strengthening foam oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery and preparation method thereof | |
| CN103351857B (en) | A kind of salt tolerant worm-like micelle systems, its preparation method and the purposes in the displacement of reservoir oil thereof | |
| CN105154055A (en) | Foam oil displacement system with ultralow interfacial tension and use method of foam oil displacement system | |
| CN104342096A (en) | Sustained-release foaming agent | |
| CN107118756B (en) | A kind of efficient thick-oil thinner and preparation method thereof | |
| CN104357037A (en) | Antifreezing foaming agent and preparation method thereof | |
| CN106753303A (en) | A kind of gas well oil resistant slow-release solid foaming water discharge agent, its preparation method and application | |
| CN106433597A (en) | Foaming drainage agent, preparation method and application | |
| CN105154053A (en) | Foam scrubbing agent as well as preparation method and application thereof | |
| CN106497534A (en) | A kind of strengthening foam system built by nano-cellulose | |
| CN101531891B (en) | Multifunctional nano-viscosity reduction profile control agent | |
| CN106433594A (en) | Anti-freezing foam drainage agent and preparation method thereof | |
| CN104130767A (en) | Salt-resistant and acid-resistant concentrated foaming agent as well as preparation method and application thereof | |
| CN105062453A (en) | Solid foam water draining agent for gas field and preparation method thereof | |
| CN104449632A (en) | Oil-resistant foaming agent and preparation method thereof | |
| CN107686722A (en) | A kind of oil resistant foam flooding finish and preparation method thereof, application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |