CN114316924A - Waterproof locking agent based on anion-cation pair effect and application thereof - Google Patents
Waterproof locking agent based on anion-cation pair effect and application thereof Download PDFInfo
- Publication number
- CN114316924A CN114316924A CN202011076219.1A CN202011076219A CN114316924A CN 114316924 A CN114316924 A CN 114316924A CN 202011076219 A CN202011076219 A CN 202011076219A CN 114316924 A CN114316924 A CN 114316924A
- Authority
- CN
- China
- Prior art keywords
- surfactant
- anion
- cation
- pair
- anionic
- 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
Abstract
The invention provides a water-proof locking agent based on the action of a cation-anion pair, which consists of a cation-anion pair surfactant composition, a zwitter-ion surfactant, short-chain alcohol, a defoaming agent and water, wherein the cation-anion pair surfactant composition is prepared by compounding an anion surfactant and a cation fluorocarbon surfactant. By utilizing the action of anion-cation pairs between the anionic surfactant and the cationic fluorocarbon surfactant, the system has the characteristic of low surface/interface tension performance, and the interface tension reaches 10‑3The surface tension of the waterproof locking agent is 18mN/m at the lowest, the surface wettability of the formation surface is improved towards the hydrophobic and oleophobic double-phobic directions, and the filtrate can be effectively increasedFlowback, gas/oil phase permeability is improved, and water lock damage of a reservoir is obviously reduced. The foaming rate of the waterproof locking agent is low and is less than 10%, and the waterproof locking agent can meet the use requirements of operations such as oil field drilling, well completion, well workover, water injection, oil recovery rate improvement and the like.
Description
Technical Field
The invention relates to the technical field of oil and gas well drilling and oil and gas field development, in particular to a waterproof locking agent for the operation processes of oil field drilling, well completion, well workover, water injection, recovery efficiency improvement and the like.
Background
In the operation processes of drilling, well completion, oil testing, well repair, acidification, fracturing and the like of a low-permeability oilfield, because the liquid column pressure of the water-based working fluid is greater than the pore pressure of a stratum, part of fluid (mainly water) in the working fluid enters a pore canal wetted by reservoir water to generate a water lock effect under the action of positive pressure difference, and the seepage resistance of oil gas to a shaft is increased. In addition, the water self-absorption effect of the oil reservoir rock absorbs water phase in the shaft working fluid into an oil-gas seepage channel of the oil reservoir rock, changes the distribution of oil-gas-water around a well hole, causes the relative permeability of oil gas to be reduced, and can cause the yield of a gas well to be reduced to be lower than the original 1/3. If oil layer protection is applied to the oil reservoirs, the oil well yield can be improved by 10-300%.
The main factors influencing the water lock damage are capillary force and liquid phase retention, and the smaller the capillary radius is, the longer the liquid discharge time is, and the more serious the water lock damage is. The capillary resistance is equal to the difference between the non-wetting phase pressure and the wetting phase pressure on two sides of the capillary meniscus, and the capillary force is in direct proportion to the surface tension according to the capillary pressure calculation formula P =2 sigma cos theta/r. The waterproof locking agent is added into the working solution to reduce the surface tension of the retained liquid phase, thereby achieving the purpose of preventing and relieving the water locking damage.
The water-proof locking agent mainly used at present is alcohols such as methanol, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether and the like, and carbon-based surfactants such as ABSN, ABS, OP-10, tween and the like. However, these conventional water-blocking agents have the following disadvantages: (1) alcohol is easy to absorb in the stratum, so that the permeability of the reservoir is reduced, and the water lock cannot be released for a long time by alcohol treatment; (2) the carbon surfactant waterproof locking agent has the defects of high surface tension, difficulty in enabling a reservoir to achieve air humidity, high foaming rate and incapability of meeting the field use requirement.
Disclosure of Invention
Aiming at the common conditions that the surface tension is high, a reservoir is difficult to achieve air humidity, the foaming rate is high and the field use requirement cannot be met by the prior waterproof locking agent, the invention provides the waterproof locking agent based on the anion-cation pair effect, which has the advantages of low surface/interface tension, low foaming rate, capability of effectively improving the wettability of the reservoir and the like, can effectively increase the filtrate flowback, improve the gas/oil phase permeability and reduce the water lock damage of the reservoir, and in addition, the waterproof locking agent contains a phosphate defoaming agent with stronger defoaming performance, so the foaming rate is low and is less than 10 percent, and the field use requirement of working fluid can be met.
The purpose of the invention is realized by the following technical scheme.
The invention provides a water-proof locking agent based on the action of a cation-anion pair, which consists of a cation-anion pair surfactant composition, a zwitterionic surfactant, short-chain alcohol, a defoaming agent and water, wherein the mass percent of the cation-anion pair surfactant composition is 10-30%, the mass percent of the zwitterionic surfactant is 10-20%, the mass percent of the short-chain alcohol is 10-15%, the mass percent of the defoaming agent is 5-15%, and the balance is water.
The anion-cation pair surfactant composition is prepared by compounding an anion surfactant and a cation fluorocarbon surfactant, wherein the mass ratio of the anion surfactant to the cation fluorocarbon surfactant is 1:10-10:1, and the system has the characteristic of lower surface/interface tension performance by utilizing the effect of the anion-cation pair between the anion surfactant and the cation fluorocarbon surfactant.
The anionic surfactant in the cationic-anionic surfactant composition is sulfonate anionic surfactant or carboxylate anionic surfactant, and is selected from but not limited to petroleum sulfonate, alkylbenzene sulfonate, alkyl sulfonate, fatty alcohol ether carboxylate and alkylbenzene polyether carboxylate.
The cationic fluorocarbon surfactant in the cationic-anionic-cationic-pair surfactant composition is perfluoroalkyl quaternary ammonium salt or perfluoroalkyl amide quaternary ammonium salt,
the structure of the perfluoroalkyl quaternary ammonium salt is as follows:
CnF2n+1CH2CH2N+(CH3)2C2H5X— n=6-8；
the structure of the perfluoroalkyl amide quaternary ammonium salt is as follows:
C nF2n+1CONH(CH2)3N+(CH3)2X— n=6-8。
the cationic fluorocarbon surfactant not only utilizes the interaction of the cationic group of the cationic fluorocarbon surfactant and the anionic group of the anionic surfactant to generate a cation-anion pair, so that the system has the characteristic of low surface/interface tension performance, but also has the characteristic of improving the wettability of the stratum.
The zwitterionic surfactant is betaine zwitterionic surfactant and has the following structural general formula:
RN+(CH3)2(CH2)nX-
wherein R is an alkyl chain, n is 0-6, and X is a carboxylate or sulfonate.
The introduction of the zwitterionic surfactant can obviously enhance the stability of a system, the anionic surfactant and the cationic surfactant have strong interaction between cation and anion pairs, when the proportion of the anion and cation surfactants is close to each other, the anion and anion pairs can generate precipitation, the zwitterionic surfactant has both cation groups and anion groups in the structure, the zwitterionic surfactant can play an effective buffer role between the cation and anion pairs when introduced into the system, the precipitation of the cation and anion pairs is avoided, and therefore the stability of the system is improved.
The short-chain alcohol is one or more of lower alcohols with carbon chain number of 1-4, preferably but not limited to methanol, ethanol, isopropanol and n-butanol.
The defoaming agent is a phosphate substance selected from but not limited to tricresyl phosphate, triphenyl phosphate, trioctyl phosphate, tri-n-butyl phosphate, triisobutyl phosphate, butyl diphenyl phosphate, cresyl diphenyl phosphate and diphenyl mono-octyl phosphate.
The waterproof locking agent system provided by the invention contains more surfactants, a large amount of foam can be generated in the using process, the foam can influence the site construction and safety, the foaming performance of the waterproof locking agent can be inhibited by introducing the phosphate defoaming agent, the foaming performance is lower than 10%, and the site construction is ensured to be carried out safely and stably.
The waterproof locking agent provided by the invention can be applied to the operation processes of oil field drilling, well completion, well repair, water injection, recovery efficiency improvement and the like.
The invention utilizes the action of anion-cation pairs between the anionic surfactant and the cationic fluorocarbon surfactant, the system has the characteristic of lower surface/interface tension performance, and the interface tension reaches 10-3The minimum surface tension of the waterproof locking agent reaches 18mN/m, the wettability of the surface of the formation layer is improved towards the hydrophobic and oleophobic direction, the filtrate flowback can be effectively increased, the gas/oil phase permeability is improved, and the water locking damage of the reservoir is obviously reduced. The foaming rate of the waterproof locking agent is low and is less than 10%, and the waterproof locking agent can meet the use requirements of operations such as oil field drilling, well completion, well workover, water injection, oil recovery rate improvement and the like.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 10%, and the zwitterionic surfactant C8H17N+(CH3)2COO-The mass percent of the organic silicon compound is 20 percent, the mass percent of the n-butyl alcohol is 10 percent, the mass percent of the tri-n-butyl phosphate is 15 percent, and the balance is water. The surfactant composition for anion and cation pair is sodium dodecyl benzene sulfonate and perfluoroalkyl quaternary ammonium salt C6F13CH2CH2N+(CH3)2C2H5Cl—The mass ratio of the two substances is 1: 2.
Example 2
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 30%, and the zwitterionic surfactant C8H17N+(CH3)2(CH2)2SO3The weight percentage of the compound is 10 percent, the weight percentage of isopropanol is 15 percent, the weight percentage of triisobutyl phosphate is 5 percent, and the balance is water. The surfactant composition for anion and cation pair comprises sodium fatty alcohol polyoxyethylene ether carboxylate and perfluoroalkyl amide quaternary ammonium salt C6F13CONH (CH2)3N+(CH3)2Cl—The mass ratio of the two substances is 4: 1.
Example 3
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 20%, and the zwitterionic surfactant C6H13N+(CH3)2(CH2)2SO3The weight percentage of the organic silicon compound is 15 percent, the weight percentage of the ethanol is 15 percent, the weight percentage of the trioctyl phosphate is 10 percent, and the balance is water. The surfactant composition for anion-cation pair is sodium nonylphenol polyoxyethylene ether carboxylate and perfluoroalkyl amide quaternary ammonium salt C8F17CONH (CH2)3N+(CH3)2Cl—The mass ratio of the two substances is 10: 1.
Example 4
The embodiment provides a waterproof locking agent based on the action of anion-cation pairs,the mass percentage of the zwitterion-pair surfactant composition is 20 percent, and the zwitterionic surfactant C6H13N+(CH3)2(CH2)2SO3The weight percentage of the catalyst is 15 percent, the weight percentage of methanol is 10 percent, the weight percentage of butyl diphenyl phosphate is 10 percent, and the rest is water. The surfactant composition of the anion-cation pair is petroleum sulfonate and perfluoroalkyl quaternary ammonium salt C8F17CH2CH2N+(CH3)2C2H5Cl—The mass ratio of the two substances is 1: 10.
Example 5
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 20%, and the zwitterionic surfactant C6H13N+(CH3)2(CH2)2SO3The mass percent of the organic silicon compound is 20 percent, the mass percent of the n-butyl alcohol is 10 percent, the mass percent of the diphenyl-octyl phosphate is 15 percent, and the balance is water. The surfactant composition for anion and cation is dodecyl sulfonate and perfluoroalkyl quaternary ammonium salt C8F17CH2CH2N+(CH3)2C2H5Cl—The mass ratio of the two substances is 1: 4.
Example 6
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 25%, and the zwitterionic surfactant C6H13N+(CH3)2(CH2)2SO3The weight percentage of the mixed solution is 20 percent, the weight percentage of ethanol is 10 percent, the weight percentage of trioctyl phosphate is 15 percent, and the balance is water. The surfactant composition for anion-cation pair is sodium nonylphenol polyoxyethylene ether carboxylate and perfluoroalkyl amide quaternary ammonium salt C8F17CONH (CH2)3N+(CH3)2Cl—The mass ratio of the two substances is 1: 1.
Example 7
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 10%, and the zwitterionic surfactant C8H17N+(CH3)2(CH2)2SO3The mass percent of the compound is 15 percent, the mass percent of isopropanol is 15 percent, the mass percent of triisobutyl phosphate is 15 percent, and the balance is water. The surfactant composition for anion and cation pair comprises sodium fatty alcohol polyoxyethylene ether carboxylate and perfluoroalkyl amide quaternary ammonium salt C6F13CONH (CH2)3N+(CH3)2Cl—The mass ratio of the two substances is 6: 1.
Example 8
This example provides a water blocking agent based on the effect of anion and cation pairs, wherein the mass percentage of the anion and cation pairs surfactant composition is 30%, and the zwitterionic surfactant C8H17N+(CH3)2COO-The mass percent of the organic silicon compound is 20 percent, the mass percent of the n-butyl alcohol is 15 percent, the mass percent of the tri-n-butyl phosphate is 15 percent, and the balance is water. The surfactant composition for anion and cation pair is sodium dodecyl benzene sulfonate and perfluoroalkyl quaternary ammonium salt C6F13CH2CH2N+(CH3)2C2H5Cl—The mass ratio of the two substances is 1: 6.
Comparative examples 1 to 4
The fluorocarbon surfactant components of examples 1-4 were removed to obtain the samples of comparative examples 1-4.
Comparative examples 5 to 8
The samples of comparative examples 5-8 were obtained by removing the anionic activator component from examples 5-8.
Test example 1
This test example the water and lock proofing agent based on the effect of the pair of anions and cations prepared in the above examples 1 to 8 and the samples in comparative examples 1 to 8 were subjected to surface tension test in clean water and 10% NaCl simulated saline.
Surface tension test: the test is carried out by using a TX500C rotary drop meter interfacial tensiometer under the following test conditions: temperature 25 ℃, sample agent concentrations 0.1% and 0.5%.
The test results are shown in table 1. From the results it can be seen that: the surface tension of the sample of the embodiment in clear water or 10% NaCl simulated saline is obviously lower than that of the sample of the comparative example, the difference between the sample of the embodiment and the comparative example is that the interaction of anion and cation pairs exists in the embodiment, while the anionic activator or cationic fluorocarbon surfactant exists only singly in the comparative example and no ion pair effect is formed, which shows that the sample based on the anion and cation pair effect in the embodiment has better surface tension reducing performance.
TABLE 1 results of surface tension property test of examples and comparative examples
Test example 2
This test example the water and lock proofing agent based on the effect of the pair of anions and cations prepared in the above examples 1 to 8 and the samples in comparative examples 1 to 8 were subjected to a performance test for lowering the interfacial tension of a simulated crude oil in clean water and 10% NaCl simulated brine.
And (3) interfacial tension test: the test is carried out by using a TX500C rotary drop meter interfacial tensiometer under the following test conditions: the temperature is 90 ℃, and the concentration of the sample agent is 0.5%.
The test results are shown in table 2. From the results it can be seen that: due to the interaction of the anion and cation pairs, the interfacial tension of the sample of the example on the simulated crude oil in both clear water and 10 percent NaCl simulated brine can reach 10-3mN/m, the comparative example which does not form ion pair action reduces the poor interfacial tension of the simulated crude oil, and can only reach 10 at least-1mN/m。
TABLE 2 results of performance test of reducing interfacial tension of simulated crude oil for examples and comparative examples
| Reduction of simulated crude oil interfacial tension in clean water, mN/m | Reduction of interfacial tension of simulated crude oil, mN/m, in 10% NaCl simulated brine | |
| Example 1 | 0.00156 | 0.00345 |
| Example 2 | 0.00318 | 0.00421 |
| Example 3 | 0.00624 | 0.00531 |
| Example 4 | 0.00259 | 0.00338 |
| Example 5 | 0.00521 | 0.00421 |
| Example 6 | 0.00663 | 0.00529 |
| Example 7 | 0.00463 | 0.00516 |
| Example 8 | 0.00265 | 0.00368 |
| Comparative example 1 | 0.126 | 1.062 |
| Comparative example 2 | 0.096 | 0.352 |
| Comparative example 3 | 0.351 | 0.982 |
| Comparative example 4 | 1.263 | 2.61 |
| Comparative example 5 | 0.624 | 1.023 |
| Comparative example 6 | 0.379 | 0.835 |
| Comparative example 7 | 0.316 | 0.821 |
| Comparative example 8 | 0.865 | 1.534 |
Test example 3
In this test example, the water-blocking agent based on the effect of the pair of anions and cations prepared in examples 1 to 8 and the samples in comparative examples 1 to 8 were subjected to a test for improving the wettability of the core.
And (3) improving the wetting property of the core: and measuring the contact angles of the water drops and the oil drops on the original rock core by using a contact angle tester, soaking the rock core in the samples of the examples and the comparative examples for 24 hours, taking out the rock core, and measuring the contact angles of the water drops and the oil drops on the original rock core again.
The test results are shown in table 3. From the results it can be seen that: the rock core has better hydrophobic and oleophobic properties after being processed by the sample provided by the embodiment of the invention.
Table 3 results of testing for improved core wetting properties of examples and comparative examples
| Contact angle of water drop ° | Contact angle of oil drop ° | |
| Working fluid | Spreading out | Spreading out |
| Example 1 | 73.2 | 23.3 |
| Example 2 | 78.2 | 24.6 |
| Example 3 | 80.5 | 23.1 |
| Example 4 | 76.2 | 28.5 |
| Example 5 | 74.6 | 25.1 |
| Example 6 | 81.3 | 20.9 |
| Example 7 | 72.4 | 26.1 |
| Example 8 | 75.3 | 21.6 |
| Comparative example 1 | 13.2 | Spreading out |
| Comparative example 2 | 17.1 | Spreading out |
| Comparative example 3 | 20.2 | Spreading out |
| Comparative example 4 | 12.4 | Spreading out |
| Comparative example 5 | 61.8 | 11.3 |
| Comparative example 6 | 59.4 | 13.5 |
| Comparative example 7 | 68.7 | 10.6 |
| Comparative example 8 | 67.1 | 12.3 |
Test example 4
In this test example, the foaming properties of the water-blocking agent based on the pair of anions and cations prepared in examples 1 to 8 and the samples of comparative examples 1 to 8 were tested.
Foaming ability test: a high-speed stirrer is adopted, and the specific test conditions are as follows: the rotation speed is 10000rpm, the stirring time is 5min at room temperature, the sample concentration is 0.1 percent, and the solution amount is 100 mL.
The test results are shown in table 4. The foaming rates of the samples in the examples and the comparative examples are lower than 10%, which shows that the phosphate ester defoaming agent adopted in the invention has better defoaming effect, the foaming performance of the samples is effectively inhibited, and the foaming rates are less than 10%, thus meeting the field operation requirements of oil fields.
TABLE 4 foaming Properties of the examples and comparative examples
| Foaming Properties | |
| Example 1 | 8.6% |
| Example 2 | 7.9% |
| Example 3 | 5.6% |
| Example 4 | 6.7% |
| Example 5 | 9.1% |
| Example 6 | 6.8% |
| Example 7 | 2.2% |
| Example 8 | 3.3% |
| Comparative example 1 | 8.6% |
| Comparative example 2 | 5.8% |
| Comparative example 3 | 6.8% |
| Comparative example 4 | 9.5% |
| Comparative example 5 | 8.5% |
| Comparative example 6 | 5.5% |
| Comparative example 7 | 7.6% |
| Comparative example 8 | 6.4% |
Test example 5
In this test example, the core permeability recovery performance test was performed on the water-blocking agent based on the effect of the pair of anions and cations prepared in examples 1 to 8 and the samples in comparative examples 1 to 8.
Evaluation of core damage performance: and (3) comparing and testing the working solution by adopting a core flow test and recovering the permeability of the core after adding the waterproof lock composition.
The test results are shown in table 5. From the results it can be seen that: the sample provided by the embodiment of the invention has better performance of restoring the permeability of the rock core.
TABLE 5 test results of permeability recovery performance of examples and comparative examples on cores
Claims (10)
1. A waterproof locking agent based on the action of cation and anion pairs is characterized in that: the water-proof locking agent based on the effect of the cation-anion pairs consists of a cation-anion pair surfactant composition, a zwitterionic surfactant, short-chain alcohol, a defoaming agent and water, wherein the mass percent of the cation-anion pair surfactant composition is 10-30%, the mass percent of the zwitterionic surfactant is 10-20%, the mass percent of the short-chain alcohol is 10-15%, the mass percent of the defoaming agent is 5-15%, and the balance is water.
2. The cationic-anionic-pair-based waterproof locking agent according to claim 1, wherein: the anion-cation-pair surfactant composition is prepared by compounding an anion surfactant and a cation fluorocarbon surfactant, wherein the mass ratio of the anion surfactant to the cation fluorocarbon surfactant is 1:10-10: 1.
3. The cationic-anionic-pair-based waterproof locking agent according to claim 2, wherein: the anionic surfactant is sulfonate anionic surfactant or carboxylate anionic surfactant.
4. The cationic-anionic-pair-based waterproof locking agent according to claim 3, wherein: the anionic surfactant is selected from petroleum sulfonate, alkylbenzene sulfonate, alkyl sulfonate, fatty alcohol ether carboxylate and alkyl benzene polyether carboxylate.
5. The cationic-anionic-pair-based waterproof locking agent according to claim 2, wherein: the cationic fluorocarbon surfactant is perfluoroalkyl quaternary ammonium salt or perfluoroalkyl amide quaternary ammonium salt,
the structure of the perfluoroalkyl quaternary ammonium salt is as follows:
CnF2n+1CH2CH2N+(CH3)2C2H5X—n =6 or 8;
the structure of the perfluoroalkyl amide quaternary ammonium salt is as follows:
CnF2n+1CONH(CH2)3N+(CH3)X—n =6 or 8.
6. The cationic-anionic-pair-based waterproof locking agent according to claim 1, wherein: the zwitterionic surfactant is betaine zwitterionic surfactant and has the following structural general formula:
RN+(CH3)2(CH2)nX-
wherein R is an alkyl chain, n is 0-6, and X is a carboxylate or sulfonate.
7. The cationic-anionic-pair-based waterproof locking agent according to claim 1, wherein: the short chain alcohol is one or the combination of more of low carbon alcohols with carbon chain number of 1-4.
8. The cationic-anionic-pair-based waterproof locking agent according to claim 7, wherein: the short-chain alcohol is methanol, ethanol, isopropanol or n-butanol.
9. The cationic-anionic-pair-based waterproof locking agent according to claim 1, wherein: the defoaming agent is a phosphate substance selected from but not limited to tricresyl phosphate, triphenyl phosphate, trioctyl phosphate, tri-n-butyl phosphate, triisobutyl phosphate, butyl diphenyl phosphate, cresyl diphenyl phosphate and diphenyl mono-octyl phosphate.
10. The use of the cationic-anionic-pair-based water-proofing and locking agent according to claim 1, wherein: the waterproof locking agent is used in the oil field drilling, well completion, well repair, water injection and oil recovery increasing operation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011076219.1A CN114316924B (en) | 2020-10-10 | 2020-10-10 | Waterproof locking agent based on anion-cation pair effect and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011076219.1A CN114316924B (en) | 2020-10-10 | 2020-10-10 | Waterproof locking agent based on anion-cation pair effect and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114316924A true CN114316924A (en) | 2022-04-12 |
| CN114316924B CN114316924B (en) | 2023-09-15 |
Family
ID=81032445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011076219.1A Active CN114316924B (en) | 2020-10-10 | 2020-10-10 | Waterproof locking agent based on anion-cation pair effect and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114316924B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090253595A1 (en) * | 2008-04-03 | 2009-10-08 | Bj Services Company | Surfactants for hydrocarbon recovery |
| CN103045182A (en) * | 2012-11-30 | 2013-04-17 | 东营利丰化工新材料有限公司 | Anti-water blocking agent for drilling fluid |
| US20140262297A1 (en) * | 2013-03-13 | 2014-09-18 | Ecolab Usa Inc. | Foamers for liquid removal |
| CN105505344A (en) * | 2015-12-01 | 2016-04-20 | 中国石油天然气股份有限公司 | Method for improving shale well wall stability by controlling wettability of water-based drilling fluid |
| CN106967404A (en) * | 2017-02-22 | 2017-07-21 | 中国石油化工股份有限公司 | Reducing thick oil viscosity helps row's composition, viscosity reduction cleanup additive, preparation method and application |
| CN107286918A (en) * | 2017-07-12 | 2017-10-24 | 中国石油化工股份有限公司 | A kind of efficient flushing fluid for low-permeability sandstone oil reservoir well-flushing |
| CN108048071A (en) * | 2018-01-12 | 2018-05-18 | 中国海洋石油集团有限公司 | It is a kind of for chemical increasing production liquid of low permeability reservoir and preparation method thereof |
| CN108485627A (en) * | 2018-04-28 | 2018-09-04 | 西南石油大学 | A kind of preparation of water filling with oil cleaning clay expansion-resisting agent |
| CN109111907A (en) * | 2018-07-23 | 2019-01-01 | 寿光新海能源技术有限公司 | A kind of efficient hydrophobic oleophobic type oilfield chemical auxiliary surfactant and preparation method by force |
| CN110527503A (en) * | 2018-05-24 | 2019-12-03 | 中国石油化工股份有限公司 | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent |
| CN110776893A (en) * | 2018-07-31 | 2020-02-11 | 中国石油化工股份有限公司 | Low-interfacial-tension strong-foam oil displacement agent |
| CN110964494A (en) * | 2018-09-30 | 2020-04-07 | 中国石油化工股份有限公司 | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method |
-
2020
- 2020-10-10 CN CN202011076219.1A patent/CN114316924B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090253595A1 (en) * | 2008-04-03 | 2009-10-08 | Bj Services Company | Surfactants for hydrocarbon recovery |
| CN103045182A (en) * | 2012-11-30 | 2013-04-17 | 东营利丰化工新材料有限公司 | Anti-water blocking agent for drilling fluid |
| US20140262297A1 (en) * | 2013-03-13 | 2014-09-18 | Ecolab Usa Inc. | Foamers for liquid removal |
| CN105505344A (en) * | 2015-12-01 | 2016-04-20 | 中国石油天然气股份有限公司 | Method for improving shale well wall stability by controlling wettability of water-based drilling fluid |
| CN106967404A (en) * | 2017-02-22 | 2017-07-21 | 中国石油化工股份有限公司 | Reducing thick oil viscosity helps row's composition, viscosity reduction cleanup additive, preparation method and application |
| CN107286918A (en) * | 2017-07-12 | 2017-10-24 | 中国石油化工股份有限公司 | A kind of efficient flushing fluid for low-permeability sandstone oil reservoir well-flushing |
| CN108048071A (en) * | 2018-01-12 | 2018-05-18 | 中国海洋石油集团有限公司 | It is a kind of for chemical increasing production liquid of low permeability reservoir and preparation method thereof |
| CN108485627A (en) * | 2018-04-28 | 2018-09-04 | 西南石油大学 | A kind of preparation of water filling with oil cleaning clay expansion-resisting agent |
| CN110527503A (en) * | 2018-05-24 | 2019-12-03 | 中国石油化工股份有限公司 | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent |
| CN109111907A (en) * | 2018-07-23 | 2019-01-01 | 寿光新海能源技术有限公司 | A kind of efficient hydrophobic oleophobic type oilfield chemical auxiliary surfactant and preparation method by force |
| CN110776893A (en) * | 2018-07-31 | 2020-02-11 | 中国石油化工股份有限公司 | Low-interfacial-tension strong-foam oil displacement agent |
| CN110964494A (en) * | 2018-09-30 | 2020-04-07 | 中国石油化工股份有限公司 | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method |
Non-Patent Citations (3)
| Title |
|---|
| MEIJIA AVENDANO: "sorption of polyfluoroalkyl surfactants on surface soils : effect of molecular structures,soil properties, and solution chemistry", 《ENVIROMENTAL SCIENCE & TECHNOLOGY》, vol. 54, no. 3, pages 1513 - 1521 * |
| 李小平: "两性-阴离子表面活性剂体系的构建及其防水锁效果", 《油田化学》, vol. 37, no. 1, pages 67 - 72 * |
| 钟静芬, 人民卫生出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114316924B (en) | 2023-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104449631B (en) | Strong gas wettability nano silicon Xie Shui locks the method for agent, its preparation method and rock surface wettability reversal | |
| CN106715642B (en) | Process for recovering subterranean petroleum using surfactant blends | |
| US11702583B2 (en) | Compositions and methods employing carbon-based nanodots for wettability alteration | |
| US8772204B2 (en) | Fluorosurfactants and treatment fluids for reduction of water blocks, oil blocks, and/or gas condensates and associated methods | |
| CN112226223A (en) | Surfactant composition for pressure reduction and injection increase of ultra-low permeability oil reservoir and preparation method thereof | |
| CN110325617B (en) | Surfactant for enhanced oil recovery | |
| CN109370544A (en) | Drilling fluid inhibition lubricant ether polymer and preparation method thereof | |
| RU2294353C1 (en) | Formulation for acid treatment of critical borehole zone | |
| CN108485627B (en) | Preparation of clay anti-swelling agent with oil washing effect for water injection | |
| CN111978933A (en) | Waterproof lock composition for oil field and application thereof | |
| CN111303854A (en) | Sandstone reservoir permeability agent, permeability fracturing fluid and use method thereof | |
| US20120241151A1 (en) | Process for mineral oil production using surfactants from the class of the alkyl polyglucosides | |
| CN114316924A (en) | Waterproof locking agent based on anion-cation pair effect and application thereof | |
| CN111088009B (en) | Reinforced oil-resistant foam drainage agent composition, preparation method thereof and drainage and gas production method | |
| CN106590572B (en) | Composite surfactant composition for displacement of reservoir oil of hypersalinity | |
| CN112143468A (en) | Emulsion type waterproof locking agent for oil field and application thereof | |
| CN113214473B (en) | Preparation method and application of low-permeability reservoir water injection well pressure-reducing and injection-increasing polyamide | |
| CN116023922B (en) | Surfactant composition, thick oil displacement agent, preparation method and application thereof, and method for improving thick oil recovery rate | |
| US20160215201A1 (en) | Composition and method for enhanced hydrocarbon recovery | |
| CN106590564B (en) | Temperature-resistant salt-resistant low-tension foam flooding composition and preparation method and application thereof | |
| CN111088010B (en) | Reinforced salt-resistant oil-resistant foam drainage agent composition and preparation method and application thereof | |
| US4316809A (en) | Micellar fluid for low and high hardness crude oil displacement | |
| CN115772398B (en) | Water unlocking locking agent and preparation method and application thereof | |
| CN109575896B (en) | Polyether organic base/surfactant composite oil displacement system and application thereof | |
| CN107760284B (en) | Waterproof locking agent for well repair, preparation method and application thereof |
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 | ||
| CB02 | Change of applicant information |
Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Applicant before: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Applicant before: CHINA PETROLEUM & CHEMICAL Corp. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |