CN107502331B - Crude oil extracting agent for shale oil fracturing fluid and preparation method and application thereof - Google Patents
Crude oil extracting agent for shale oil fracturing fluid and preparation method and application thereof Download PDFInfo
- Publication number
- CN107502331B CN107502331B CN201710573032.4A CN201710573032A CN107502331B CN 107502331 B CN107502331 B CN 107502331B CN 201710573032 A CN201710573032 A CN 201710573032A CN 107502331 B CN107502331 B CN 107502331B
- Authority
- CN
- China
- Prior art keywords
- crude oil
- extracting agent
- fracturing fluid
- oil
- shale
- 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.)
- Active
Links
Images
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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention belongs to the technical field of oil-gas field chemistry, and discloses a crude oil extracting agent for a shale oil fracturing fluid, which comprises the following components in percentage by mass: 1-1.5% of fluorocarbon surfactant, 30-35% of dodecyl dimethyl benzyl ammonium chloride, 15-20% of dodecyl trimethyl ammonium chloride, 5-8% of phosphorus carboxylate and 22-40% of water. The crude oil extracting agent is used for improving the extraction rate of crude oil in the fracturing process, and the using method is that the crude oil extracting agent is directly added into fracturing fluid, wherein the usage amount of the crude oil extracting agent accounts for 1% -3% of that of the fracturing fluid. The invention can reduce the interfacial tension of the crude oil and water to a lower degree, so that the crude oil is easy to peel off and flow, the preparation method is simple, the cost is low, the requirements of high-displacement construction and on-site connection blending can be met, and the invention is suitable for popularization and application in oil and gas field operation.
Description
Technical Field
The invention belongs to the technical field of oil and gas field chemistry, and particularly relates to a crude oil extracting agent for a shale oil fracturing fluid, which is mainly used for improving the extraction rate of crude oil in the fracturing process.
Background
According to the statistical number published by the United states oil and gas, the worldwide shale oil reserves are about 11 trillion to 13 trillion tons, far exceeding the oil reserves. The global shale oil is produced in the hanwu to the third lines, and is distributed mainly in 9 countries such as the united states, congo, brazil, italy, morocco, jodan, australia, china and canada.
The reserves of the Chinese shale oil resources are also rich, and according to the new evaluation result of the Chinese oil and gas resources in 2004-2006, the Chinese shale oil resources are 7199.4 hundred million tons, and the shale oil recoverable resources are 2432.4 million tons; 476.4 million tons of shale oil resources, 159.7 million tons of shale oil recoverable resources, 119.8 million tons of shale oil recoverable resources, which are distributed throughout 20 provinces and autonomous regions, 47 basins and 80 ore-containing regions and are mainly distributed in 9 basins such as Songliao, Ordors, Querchun, Lauda, Longpo, Changtang, Maocai, Dayan, Fushun and the like. Wherein 3 basin oil shale resources such as Songliao, Ordos, and Ersongorian account for 74.24% of the whole country, and the recoverable shale oil accounts for 64.25% of the total amount of the whole country. The reserves of Jilin, Liaoning and Guangdong provinces are the largest.
How to extract crude oil in shale oil and gas reservoirs as economically and effectively as possible is an extremely attractive problem and a worldwide problem. Unlike the exploration of new oil fields, the problem of improving the recovery ratio runs through the whole development process from the discovery of the oil field to the completion of the exploitation, and the improvement of the recovery ratio is the permanent theme of the exploitation of the oil field.
At present, shale oil and gas fields are developed by more and more specific weight. It is believed that the following conditions should be satisfied to greatly increase the recovery ratio of crude oil: (1) the interfacial tension of the crude oil and water can be reduced to a lower degree, such as lower than 0.001mN/m, so as to reduce the adsorption of the rock stratum to the crude oil; (2) has proper solubility and pH value; (3) in the environment of an oil storage layer, the physical and chemical stability can be kept for a long time, and the oil displacement rate can be improved by contacting with most of the oil storage layer; (4) with an acceptable cost.
Disclosure of Invention
In view of the particularity of shale oil and gas field development, the actual application effect of the crude oil extracting agent for the existing shale oil fracturing fluid is not ideal and mainly expressed as follows: the adsorption effect of the rock stratum on crude oil is difficult to effectively reduce, and the crude oil is difficult to peel off and flow from the surface of the rock; the universality is poor, the physical and chemical properties are inconsistent in different oil storage layers, and the compatibility with working fluid entering the well is poor. Aiming at the technical defects of the existing crude oil extracting agent, the invention provides a crude oil extracting agent for a shale oil fracturing fluid. The crude oil extracting agent has an ultralow interface (the interface is lower than 0.001mN/m), can resist high-salinity formation water, has broad application spectrum and is reasonable in price.
The crude oil extracting agent for the shale oil fracturing fluid (hereinafter referred to as crude oil extracting agent) is a mixture of a fluorocarbon surfactant, dodecyl dimethyl benzyl ammonium chloride, dodecyl trimethyl ammonium chloride, phosphorus carboxylate and water. Specifically, the crude oil extracting agent comprises the following components in percentage by mass:
the crude oil extracting agent is used for improving the extraction rate of crude oil in the fracturing process. As a preferred embodiment, the fluorocarbon surfactant is TF-1 fluorocarbon surfactant or SR18Y fluorocarbon surfactant. Fluorocarbon surfactants are surfactants that use fluorocarbon chains to replace hydrocarbon chains as nonpolar groups in molecules, and are classified into anionic, cationic, nonionic, amphoteric fluorocarbon surfactants, and other types of fluorocarbon surfactants such as silicon-containing fluorocarbon surfactants, hybrid surfactants, long-chain surfactants, and non-hydrophilic fluorocarbon surfactants. In the embodiment of the invention, TF-1 fluorocarbon surfactant or SR18Y fluorocarbon surfactant manufactured by Shaanxi Shanxi Rui oil technology development Co., Ltd can be specifically selected. The specific type of fluorocarbon surfactant is not particularly limited in the present invention.
In one aspect, the invention also provides a method for preparing the crude oil extracting agent. Specifically, solvent water is weighed and then pumped into a reaction kettle, then the fluorocarbon surfactant is put into the reaction kettle, stirring is started, dodecyl dimethyl benzyl ammonium chloride, dodecyl trimethyl ammonium chloride and 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt are slowly added, and the crude oil extracting agent can be prepared after even stirring.
By adopting the preparation method, the performance test indexes of the obtained crude oil extracting agent are as follows: the pH value of the obtained crude oil extracting agent is 6-8, the interfacial tension is less than 0.001mN/m under the conditions that the concentration of the crude oil extracting agent is 1% and the temperature is 50 ℃, and the extraction rate of the crude oil is more than 45%. The crude oil extracting agent is neutral, weak acidic or weak alkaline, is environment-friendly and can be used together with fracturing fluid.
Moreover, the invention also provides the application of the crude oil extracting agent. And calculating the dosage of the crude oil extracting agent according to the prepared fracturing fluid, and adding the crude oil extracting agent into the fracturing fluid. The obtained crude oil extracting agent is directly added into the fracturing fluid, and the dosage of the crude oil extracting agent accounts for 1-3% of that of the fracturing fluid.
The crude oil extracting agent for the shale oil fracturing fluid has at least the following beneficial effects or advantages.
(1) The crude oil extracting agent is a composition of a fluorocarbon surfactant, dodecyl dimethyl benzyl ammonium chloride, dodecyl trimethyl ammonium chloride, 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt and water, has the advantages of simple preparation method and low cost, can meet the requirements of high-displacement construction and on-site connection blending, and is suitable for popularization and application in oil and gas field operation.
(2) The crude oil extracting agent disclosed by the invention is adsorbed on the rock surface to form an ultrathin film, so that the adhesion between the crude oil and the rock surface is reduced, and the crude oil is easy to peel off and flow.
(3) The crude oil extracting agent disclosed by the invention can reduce the adsorption effect of a rock stratum on crude oil during well injection fracturing, can keep physical and chemical stability for a long time in the environment of an oil storage layer, has good salt resistance, is insensitive to electrolyte, can be contacted with most of the oil storage layer, and improves the extraction rate of the crude oil.
Drawings
FIG. 1 is a graph showing the relationship between the concentration of crude oil extractants used in shale oil fracturing fluids and interfacial tension.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary of the invention and are not intended to limit the scope of the invention, which is defined by the claims.
Example 1
The embodiment provides a preferable composition of a crude oil extracting agent for a shale oil fracturing fluid, and the dosage of each component is as follows by mass percent: 1% of fluorocarbon surfactant, 30% of dodecyl dimethyl benzyl ammonium chloride, 15% of dodecyl trimethyl ammonium chloride, 5% of 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt and 49% of water. The fluorocarbon surfactant of this example was TF-1 fluorocarbon surfactant.
The preparation method comprises the following steps: weighing 49kg of solvent water, sufficiently pumping into a reaction kettle, putting 1kg of TF-1 fluorocarbon surfactant into the reaction kettle, starting stirring, and properly adjusting the stirring speed; slowly adding 30kg of dodecyl dimethyl benzyl ammonium chloride, 15kg of dodecyl trimethyl ammonium chloride and 5kg of 2-phosphoryl-1, 2, 4-butane sodium tricarboxylate, and stirring at normal temperature for 1 hour to obtain the liquid resistance effect remover. The pH of the liquid resistance effect remover in the embodiment is 6.2, and is measured to be weakly acidic.
Example 2
The embodiment provides a preferable composition of a crude oil extracting agent for a shale oil fracturing fluid, and the dosage of each component is as follows by mass percent: 1.2% of fluorocarbon surfactant, 33% of dodecyl dimethyl benzyl ammonium chloride, 16% of dodecyl trimethyl ammonium chloride, 6% of 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt and 43.8% of water. The fluorocarbon surfactant of the present embodiment is SR18Y fluorocarbon surfactant.
The preparation method comprises the following steps: weighing 43.8kg of solvent water, sufficiently pumping into a reaction kettle, putting 1.2kg of SR18Y fluorocarbon surfactant into the reaction kettle, starting stirring, and properly adjusting the stirring speed; and slowly adding 33kg of dodecyl dimethyl benzyl ammonium chloride, 16kg of dodecyl trimethyl ammonium chloride and 6kg of 2-phosphoryl-1, 2, 4-butane sodium tricarboxylate, and stirring at normal temperature for 1 hour to obtain the liquid resistance effect remover. The pH of the liquid resistance effect remover in the embodiment is 6, and the remover is determined to be weakly acidic.
Example 3
The embodiment provides a preferable composition of a crude oil extracting agent for a shale oil fracturing fluid, and the dosage of each component is as follows by mass percent: 1.4% of fluorocarbon surfactant, 32% of dodecyl dimethyl benzyl ammonium chloride, 18% of dodecyl trimethyl ammonium chloride, 7% of 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt and 41.6% of water. The fluorocarbon surfactant of the present embodiment is SR18Y fluorocarbon surfactant.
The preparation method comprises the following steps: weighing 41.6kg of solvent water, sufficiently pumping into a reaction kettle, putting 1.4kg of SR18Y fluorocarbon surfactant into the reaction kettle, starting stirring, and properly adjusting the stirring speed; and slowly adding 32kg of dodecyl dimethyl benzyl ammonium chloride, 18kg of dodecyl trimethyl ammonium chloride and 7kg of 2-phosphoryl-1, 2, 4-butane sodium tricarboxylate, and stirring at normal temperature for 1 hour to obtain the liquid resistance effect remover. The pH of the fluid resistance effect relieving agent of this example was determined to be 7.2, which was neutral.
Example 4
The embodiment provides a preferable composition of a crude oil extracting agent for a shale oil fracturing fluid, and the dosage of each component is as follows by mass percent: 1.5% of fluorocarbon surfactant, 35% of dodecyl dimethyl benzyl ammonium chloride, 20% of dodecyl trimethyl ammonium chloride, 8% of 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt and 35.5% of water. The fluorocarbon surfactant of the present embodiment is SR18Y fluorocarbon surfactant.
The preparation method comprises the following steps: weighing 35.5kg of solvent water, sufficiently pumping into a reaction kettle, putting 1.5kg of SR18Y fluorocarbon surfactant into the reaction kettle, starting stirring, and properly adjusting the stirring speed; slowly adding 35kg of dodecyl dimethyl benzyl ammonium chloride, 20kg of dodecyl trimethyl ammonium chloride and 8kg of 2-phosphoryl-1, 2, 4-butane sodium tricarboxylate, and stirring at normal temperature for 1 hour to obtain the liquid resistance effect remover. The pH of the solution resistance effect remover is 8, which is determined to be alkalescent.
Example 5
The embodiment provides a preferable composition of a crude oil extracting agent for a shale oil fracturing fluid, and the dosage of each component is as follows by mass percent: 1.2% of fluorocarbon surfactant, 34% of dodecyl dimethyl benzyl ammonium chloride, 18% of dodecyl trimethyl ammonium chloride, 6% of 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt and 40.8% of water. The fluorocarbon surfactant of the present embodiment is SR18Y fluorocarbon surfactant.
The preparation method comprises the following steps: weighing 40.8kg of solvent water, sufficiently pumping into a reaction kettle, putting 1.2kg of SR18Y fluorocarbon surfactant into the reaction kettle, starting stirring, and properly adjusting the stirring speed; slowly adding 35kg of dodecyl dimethyl benzyl ammonium chloride, 18kg of dodecyl trimethyl ammonium chloride and 6kg of 2-phosphoryl-1, 2, 4-butane sodium tricarboxylate, and stirring at normal temperature for 1 hour to obtain the liquid resistance effect remover. The pH of the liquid resistance effect relieving agent of this example was measured to be 7.5, which is weakly basic.
Example 6
Evaluating the physical and chemical stability of the crude oil extracting agent for the shale oil fracturing fluid.
Adding corresponding demulsifier, scale inhibitor, bactericide, clay stabilizer, cleanup additive and the like into a proper amount of water according to a certain formula amount, and dividing the prepared solution into three equal parts. Adding 1 percent, 2 percent and 3 percent (mass ratio) of crude oil extracting agent for shale oil fracturing fluid into the three solutions respectively, and further placing the mixture into a water bath at 90 ℃ for observation. The experimental result shows that after 72 hours, the solutions of the crude oil extracting agents for different shale oil fracturing fluids are stable in addition, and no layering is found, namely the crude oil extracting agent solution for shale oil fracturing fluids is good in physical and chemical stability.
Example 7
The shale oil fracturing fluid is evaluated by the interfacial tension of the crude oil extractant solution.
The results of interfacial tension measurements of crude oil extractants for shale oil fracturing fluids at different concentrations are shown in FIG. 1, using a rotary drop surface interfacial tension tester TX-500C, Keno industries, Inc., USA. As can be seen from figure 1, the crude oil extractant for the shale oil fracturing fluid can effectively reduce the interfacial tension to 0.0002mN/m at the lowest, and when the concentration of the crude oil extractant solution for the shale oil fracturing fluid is more than 3%, the interfacial tension is not obviously reduced along with the increase of the concentration. The experiment shows that the dosage of the crude oil extracting agent for the shale oil fracturing fluid is preferably 1-3%.
Example 8
And evaluating the extraction rate of the shale oil fracturing fluid by using a crude oil extractant solution.
In order to evaluate the extraction rate of the crude oil extractant for shale oil fracturing fluid, the present example performed a simulated extraction test on the crude oil extractant for shale oil fracturing fluid. The specific operation is as follows: vacuumizing the selected rock core, adding various additive solutions for fracturing, measuring parameters of the rock core, saturating the rock core with oil, aging the rock core for 7 days at a test temperature, using various additive solutions for fracturing to displace the rock core to a water content of more than 98 percent at a pump speed of 0.5mL/min, injecting 10g/L crude oil extracting agent for shale oil fracturing fluid at the same speed, using tap water and mineral water (mineral water) to displace the rock core to a water content of 98 percent respectively, and finishing the test. The results of the simulated extraction experiments are shown in table 1. The core numbers 92-1-11 and 92-1-14 are 80 ℃ water flooding by using tap water, 92-1-15 and 92-1-18 are 80 ℃ mineral water flooding, and 92-1-13 and 92-1-16 are 120 ℃ mineral water flooding.
TABLE 1 results of simulated extraction test of crude oil extractants for shale oil fracturing fluids
Note: core parameter Kw-permeability;
-porosity; l is the core length; d, the diameter of the core. The water flooding extraction rate refers to the recovery rate of crude oil without adding a crude oil extracting agent for the shale oil fracturing fluid. The product extraction rate refers to the crude oil recovery rate of the crude oil extracting agent added into the shale oil fracturing fluid. And deltaR represents the difference between the water flooding extraction rate and the product extraction rate.
The experimental results (table 1) show that the crude oil extractant solution for injecting the shale oil fracturing fluid can obviously improve the crude oil recovery rate, and is also suitable under the conditions of high temperature and high salinity.
Example 9
The field application (taking the king housekeeping old well as the transformation example). The 6-inch Wangjia plateau reservoir belongs to front edge facies sediment sand bodies of the delta, has wide distribution and stable thickness, is superposed sediment of positive and negative gyrus sand bodies, and is a typical ultra-low permeability reservoir.
The block has the problems of low injected water pressure, serious stratum depletion, slow stratum pressure recovery and the like, and aiming at the problems, the crude oil extracting agent for the shale oil fracturing fluid is adopted on site. The yields before (before) and after (after) the use of the crude oil extractant are shown in Table 2 and Table 3, respectively.
The 9 wells shown in table 2 had the lowest production, high water cut, and relatively lowest fluid and oil production throughout the block. Aiming at the problem, the crude oil extracting agent described in the embodiment 5 is actually selected according to the field, and the adding amount is 2.3%. The well yields after the measures were taken are shown in table 3. As seen from Table 3, the yields of 9 oil wells after the measures are recovered to different degrees, the yield is increased by 0.27 ton/day at the minimum and reaches 1.42 ton/day at the maximum.
TABLE 2 well production before use of the crude oil extractant
TABLE 3 production of oil well after use of the crude oil extractant
The present invention has been further described with reference to the examples, but the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. A crude oil extracting agent for a shale oil fracturing fluid is used for improving the extraction rate of crude oil in the fracturing process, and the raw oil extracting agent comprises the following components in percentage by mass:
the phosphorus carboxylate is 2-phosphoryl-1, 2, 4-butane tricarboxylic acid sodium salt;
the fluorocarbon surfactant is SR18Y fluorocarbon surfactant.
2. A method for preparing the crude oil extractant for the shale oil fracturing fluid, which is characterized in that solvent water is weighed and pumped into a reaction kettle, then fluorocarbon surfactant is put into the reaction kettle, stirring is started, dodecyl dimethyl benzyl ammonium chloride, dodecyl trimethyl ammonium chloride and phosphorus carboxylate are slowly added, and the crude oil extractant can be prepared by uniformly stirring.
3. The preparation method of claim 2, wherein the pH value of the obtained crude oil extractant is 6-8, the interfacial tension is less than 0.001mN/m under the conditions that the concentration of the crude oil extractant is 1% and the temperature is 50 ℃, and the extraction rate of crude oil is more than 45%.
4. The application of the crude oil extracting agent for the shale oil fracturing fluid of claim 1, wherein the crude oil extracting agent is added into the fracturing fluid, and the dosage of the crude oil extracting agent accounts for 1-3% of that of the fracturing fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573032.4A CN107502331B (en) | 2017-07-14 | 2017-07-14 | Crude oil extracting agent for shale oil fracturing fluid and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573032.4A CN107502331B (en) | 2017-07-14 | 2017-07-14 | Crude oil extracting agent for shale oil fracturing fluid and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107502331A CN107502331A (en) | 2017-12-22 |
| CN107502331B true CN107502331B (en) | 2020-09-04 |
Family
ID=60679894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710573032.4A Active CN107502331B (en) | 2017-07-14 | 2017-07-14 | Crude oil extracting agent for shale oil fracturing fluid and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107502331B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431580A (en) * | 2020-11-19 | 2021-03-02 | 昆明理工大学 | Method for improving shale oil recovery ratio |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7157409B2 (en) * | 2002-09-25 | 2007-01-02 | M-I Llc | Surfactant-polymer compositions for enhancing the stability of viscoelastic-surfactant based fluid |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7547665B2 (en) * | 2005-04-29 | 2009-06-16 | Halliburton Energy Services, Inc. | Acidic treatment fluids comprising scleroglucan and/or diutan and associated methods |
| CN100560681C (en) * | 2007-03-23 | 2009-11-18 | 中国石油天然气股份有限公司 | Wax-removing corrosion-resistant scale inhibitor for oil well |
| CN101423755B (en) * | 2008-10-14 | 2010-12-22 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Formula of gas well water blocking damage treating agent |
| CN101538462B (en) * | 2009-04-30 | 2011-08-03 | 中国石油天然气股份有限公司 | Oil well cleanup additive |
| CN102533243B (en) * | 2010-12-10 | 2014-04-02 | 中国石油化工股份有限公司 | Fracture acidizing cleanup additive of fluorine-containing carbon chain Gemini surfactant and preparation method thereof |
| CN102504790B (en) * | 2011-11-09 | 2013-11-06 | 蒋官澄 | Method for reversing gas humidity on surface of rock core by using cationic fluorocarbon surfactant |
| US20130310285A1 (en) * | 2012-05-18 | 2013-11-21 | Andrey Fedorov | Treatment fluid and method |
| CN103396785A (en) * | 2013-07-30 | 2013-11-20 | 宜兴市东明石油化学助剂有限公司 | Anti-swelling and discharge-aiding agent |
| CN103555309B (en) * | 2013-10-22 | 2016-09-28 | 大连知微生物科技有限公司 | A kind of water blocking damage treating agent based on biosurfactant and preparation method thereof |
| CN104673261A (en) * | 2013-12-02 | 2015-06-03 | 青岛惠城石化科技有限公司 | Research on compound binary oil-displacing system of fluorocarbon type surfactant |
| CN104673264A (en) * | 2013-12-03 | 2015-06-03 | 青岛惠城石化科技有限公司 | Research on fluorocarbon surfactant compound oil-displacing agent |
| CN104673265A (en) * | 2013-12-03 | 2015-06-03 | 青岛惠城石化科技有限公司 | Research of binary compounding system capable of generating ultralow interfacial tension |
| CN104531123B (en) * | 2015-01-23 | 2018-02-23 | 成都华阳兴华化工有限公司 | Viscous crude foam flooding finish and preparation method thereof |
-
2017
- 2017-07-14 CN CN201710573032.4A patent/CN107502331B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7157409B2 (en) * | 2002-09-25 | 2007-01-02 | M-I Llc | Surfactant-polymer compositions for enhancing the stability of viscoelastic-surfactant based fluid |
Non-Patent Citations (3)
| Title |
|---|
| Effect of double quaternary ammonium groups on micelle formation of partially fluorinated surfactant;Matsuoka，等;《JOURNAL OF COLLOID AND INTERFACE SCIENCE》;20110415;第356卷(第2期);第624-629页 * |
| 何静，等.不同化学助剂对压裂助排剂水溶液表界面张力的影响.《内蒙古石油化工 》.2013,(第7期),第64-66页. * |
| 表面活性剂在油气开采和集输中的应用及前景;冯玉军,等;《日用化学品科学》;20070525;第30卷(第5期);第23-26页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107502331A (en) | 2017-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Guo et al. | Lessons learned from alkali/surfactant/polymer-flooding field tests in China | |
| CN107365574B (en) | Viscosity-reducing oil displacement agent for common heavy oil reservoir and preparation method thereof | |
| CN102690644B (en) | Binary alkali-free composite oil displacement composition suitable for high-temperature high-salt oil reservoir and application thereof | |
| CN102703049B (en) | Binary composite oil displacement composition and application thereof in tertiary oil recovery | |
| CN105154051A (en) | Pressure-reducing injection-increasing surfactant compound composition and preparation method and application thereof | |
| CN107502331B (en) | Crude oil extracting agent for shale oil fracturing fluid and preparation method and application thereof | |
| CN102925127B (en) | A kind of oil well acidation pretreating agent | |
| Baghishov et al. | A mechanistic comparison of formate, acetate, and glycine as wettability modifiers for carbonate and shale formations | |
| CN114752366A (en) | Biological surfactant plugging-removing injection-increasing agent and application system | |
| CN104073231B (en) | Composite oil displacement agent | |
| CN105176511A (en) | Performance-favorable discharge aiding agent of acid fracturing fluid and preparation method of performance-favorable discharge aiding agent | |
| CN109385257A (en) | A kind of double slug Compositional type profile control agents of low-permeability sandstone oil reservoir and its application method | |
| CN112680206B (en) | Surfactant composition, and preparation method and application thereof | |
| Zargar et al. | Evaluation of a new agent for wettability alteration during enhanced oil recovery | |
| Sheng | Status of alkaline-surfactant flooding | |
| CN110791279A (en) | High-viscosity strong-corrosion acid liquor system for low-permeability sandstone oil reservoir | |
| Fjelde et al. | Improvement of Spontaneous Imbibition in Carbonate Rocks by CO²-saturated Brine | |
| CN114854382B (en) | Low-permeability oil reservoir bio-based microemulsion blocking removal and injection enhancement system and injection process thereof | |
| CN110055043A (en) | Multistage targeting Compound-acid and preparation method thereof | |
| CN107384358B (en) | Wetting reversal agent for improving depressurization and injection enhancement effects of water injection well of low-permeability reservoir and preparation method thereof | |
| CN114907530A (en) | Oil-gas field fracturing fluid thickening agent with efficient resistance-reducing sand-carrying property and preparation method thereof | |
| CN111676005A (en) | Acid blocking remover based on twin surfactant micelle structure and application thereof | |
| CN110511735B (en) | High-viscosity strong-corrosion acid liquor system for tight oil reservoir | |
| CN113214473A (en) | Preparation method and application of low-permeability reservoir water injection well pressure-reducing and injection-increasing polyamide | |
| CN109135713A (en) | A kind of clean fracturing fluid and preparation method thereof for high salinity recovered water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |