CN112552889A - Self-cleaning or self-degrading temporary plugging agent and preparation method thereof - Google Patents
Self-cleaning or self-degrading temporary plugging agent and preparation method thereof Download PDFInfo
- Publication number
- CN112552889A CN112552889A CN202011281327.2A CN202011281327A CN112552889A CN 112552889 A CN112552889 A CN 112552889A CN 202011281327 A CN202011281327 A CN 202011281327A CN 112552889 A CN112552889 A CN 112552889A
- Authority
- CN
- China
- Prior art keywords
- self
- cleaning
- agent
- temporary plugging
- degrading
- 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.)
- Pending
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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5086—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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)
- Chemical Kinetics & Catalysis (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a self-cleaning or self-degradation temporary plugging agent and a preparation method thereof, wherein the raw materials for preparing the self-cleaning or self-degradation temporary plugging agent comprise the following components in percentage by weight, based on 100 percent of the total weight of the self-cleaning or self-degradation temporary plugging agent: 40-50% of polylactic acid; 25% -35% of biodegradation agent; 2% -4% of glycerol; polycaprolactone, the consumption is 4% -6%; the amount of the thickening agent is 5 to 7 percent; 1-3% of alkaline solution; the cross-linking agent, the consumption is 0.1% -0.5%; and the balance water. The self-cleaning or self-degradation temporary plugging agent and the preparation method thereof can degrade within 48 hours, absorb water, expand and crack at the temperature of the stratum, lose mechanical strength, finally degrade into water and carbon dioxide along with time increase, can degrade automatically at the temperature of the reservoir, and can degrade automatically after operation for high-water-content oil wells and water wells.
Description
Technical Field
The invention belongs to the technical field of oilfield chemical engineering, and particularly relates to a self-cleaning or self-degradation temporary plugging agent and a preparation method thereof.
Background
At present, the widely used temporary plugging agents are classified from the aspect of plugging removal and can be divided into water-soluble temporary plugging agents, oil-soluble temporary plugging agents, acid-soluble temporary plugging agents and the like, wherein the oil-soluble temporary plugging agents are widely applied because the oil-soluble temporary plugging agents can be degraded by crude oil after operation. However, with the development of oil fields, the water content of oil wells of most onshore oil fields in China gradually increases, and taking a Hongkong oil field as an example, the average water content of the oil wells is more than 70%, the water content of part of the oil wells reaches more than 90%, and the degradation rate of the oil-soluble temporary plugging agent is obviously reduced. In addition, the pressure among all layers of the water injection well is unbalanced, in the operation processes of well repair, well killing, sand washing and the like, the leakage of the fluid entering the well is serious, and a plurality of wells cannot normally kill and circulate, so that the operation procedures cannot be continuous, the operation and the normal production of the well are seriously influenced, the stratum is also damaged, and some measures of the water injection well also need to apply a temporary plugging technology.
The currently used gel plugging materials such as expanded particles belong to deformable elastic materials, the plugging effect is good, but the plugging materials can not be automatically degraded and are usually dissolved by oxidant or acid, so that certain potential safety hazards exist and the construction cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a self-cleaning or self-degradation temporary plugging agent to solve the problem that the prior art cannot degrade automatically.
The second purpose of the invention is to provide a preparation method of the temporary plugging agent.
In order to achieve the purpose, the invention provides the following technical scheme: a self-cleaning or self-degrading temporary plugging agent comprises the following raw materials in percentage by weight, based on 100% of the total weight of the self-cleaning or self-degrading temporary plugging agent:
40-50% of polylactic acid;
25% -35% of biodegradation agent;
2% -4% of glycerol;
polycaprolactone, the consumption is 4% -6%;
the amount of the thickening agent is 5 to 7 percent;
1-3% of alkaline solution;
the cross-linking agent, the consumption is 0.1% -0.5%;
and the balance water.
Further, the cross-linking agent is one of ethylene glycol diacrylate, methylene bisacrylamide, sodium borate potassium dichromate and polyethylene glycol diacrylate.
Further, the biodegradation agent is a mixture of soybeans and corns, the weight ratio of the soybeans to the corns in the mixture is 2:1, and the particle size of the biodegradation agent is 0.3-0.8 mm.
Further, the thickening agent is one of sodium bromide, sodium chloride, potassium chloride and cesium formate.
Further, the alkaline solution is one of a sodium carbonate solution and a sodium hydroxide solution, the mass fraction of alkaline chemical components of the alkaline solution is 10% -20%, and the balance of the alkaline solution is distilled water.
A preparation method of a self-cleaning or self-degradation temporary plugging agent is used for preparing the self-cleaning or self-degradation temporary plugging agent and comprises the following specific steps:
s1, processing the mixture of the soybeans and the corns to prepare a particle mixture with the particle size of 0.3-0.8mm, adding the particle mixture into water, heating and fully stirring for dissolving to enable the particle mixture to be gelatinized;
s2, adding polylactic acid, glycerol and polycaprolactone into the solution, and stirring uniformly;
s3, sequentially adding a thickening agent and a cross-linking agent into the solution, dropwise adding an alkaline solution, heating to 80 ℃, and waiting for reaction for 5 hours to obtain a gel product;
and S4, extruding the gel product through a double-screw extruder, conveying the gel product into a granulator, and crushing the gel product by the granulator to obtain the self-cleaning or self-degradation temporary plugging agent.
Further, in the step S1, the gelatinization time is controlled to be 1-1.5h, and the heating temperature is controlled to be within the range of 75-85 ℃.
Further, in the S4, the temperature of the main machine of the double-screw extruder is 170-180 ℃, and the rotating speed of the granulator is 100-200 r/min.
Compared with the prior art, the self-cleaning or self-degradation temporary plugging agent and the preparation method thereof provided by the invention have the following beneficial effects:
1. the self-cleaning or self-degradation temporary plugging agent provided by the invention can be degraded within 48 hours, the degradation cleaning rate can reach more than 90%, the temporary plugging agent can be expanded and cracked by absorbing water at the formation temperature, loses mechanical strength, is finally degraded into water and carbon dioxide along with the increase of time, can be automatically degraded at the reservoir temperature, and can be automatically degraded after the operation of high-water-content oil wells and water wells.
2. The preparation method of the self-cleaning or self-degradation temporary plugging agent provided by the invention utilizes two hydrophilic components of soybean and corn, the soybean and corn are low in purchase cost and convenient to purchase from the market, the preparation time is saved, and the quick preparation is facilitated.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention.
The first embodiment is as follows:
a self-cleaning or self-degrading temporary plugging agent comprises the following raw materials in percentage by weight, based on 100% of the total weight of the self-cleaning or self-degrading temporary plugging agent:
40-50% of polylactic acid;
25% -35% of biodegradation agent;
the biodegradable agent is a mixture of soybeans and corns, the weight ratio of the soybeans to the corns in the mixture is 2:1, and the particle size of the biodegradable agent is 0.3-0.8 mm.
2% -4% of glycerol;
polycaprolactone, the consumption is 4% -6%;
the amount of the thickening agent is 5 to 7 percent;
the thickening agent is one of sodium bromide, sodium chloride, potassium chloride and cesium formate.
1-3% of alkaline solution;
the alkaline solution is one of a sodium carbonate solution and a sodium hydroxide solution, the mass fraction of alkaline chemical components of the alkaline solution is 10% -20%, and the balance of the alkaline solution is distilled water.
The cross-linking agent, the consumption is 0.1% -0.5%;
the cross-linking agent is one of ethylene glycol diacrylate, methylene bisacrylamide, sodium borate potassium dichromate and polyethylene glycol diacrylate.
And the balance water.
The temporary plugging agent is improved by using glycerol, the glycerol can reduce interface energy, promote diffusion and improve the adhesive force between polylactic acid and a biodegradation agent, and meanwhile, the favorable hydrophilicity of soybeans and corns is utilized to facilitate the invasion and growth of microorganisms, so that the biodegradation of the microorganisms is promoted.
The method for preparing the self-cleaning or self-degradation temporary plugging agent of the first embodiment comprises the following specific steps:
s1, processing the mixture of the soybeans and the corns to prepare a particle mixture with the particle size of 0.3-0.8mm, adding the particle mixture into water, heating and fully stirring for dissolving to enable the particle mixture to be gelatinized;
the gelatinization time is controlled within 1-1.5h, and the heating temperature is controlled within the range of 75-85 ℃.
S2, adding polylactic acid, glycerol and polycaprolactone into the solution, and stirring uniformly;
s3, sequentially adding a thickening agent and a cross-linking agent into the solution, dropwise adding an alkaline solution, heating to 80 ℃, and waiting for reaction for 5 hours to obtain a gel product;
and S4, extruding the gel product through a double-screw extruder, conveying the gel product into a granulator, and crushing the gel product by the granulator to obtain the self-cleaning or self-degradation temporary plugging agent.
The temperature of the main machine of the double-screw extruder is 170-180 ℃, and the rotating speed of the granulator is 100-200 r/min.
Example two:
a self-cleaning or self-degrading temporary plugging agent comprises the following raw materials in percentage by weight, based on 100% of the total weight of the self-cleaning or self-degrading temporary plugging agent:
45% -50% of polylactic acid;
the dosage of the biological degradation agent is 30-35 percent;
the biodegradable agent is a mixture of soybeans and corns, the weight ratio of the soybeans to the corns in the mixture is 2:1, and the particle size of the biodegradable agent is 0.4-0.8 mm.
3% -4% of glycerol;
5-6% of polycaprolactone;
6 to 7 percent of thickening agent;
the thickening agent is one of sodium bromide, sodium chloride, potassium chloride and cesium formate.
2-3% of alkaline solution;
the alkaline solution is one of a sodium carbonate solution and a sodium hydroxide solution, the mass fraction of alkaline chemical components of the alkaline solution is 10% -20%, and the balance of the alkaline solution is distilled water.
The cross-linking agent, the consumption is 0.2% -0.5%;
the cross-linking agent is one of ethylene glycol diacrylate, methylene bisacrylamide, sodium borate potassium dichromate and polyethylene glycol diacrylate.
And the balance water.
The temporary plugging agent is improved by using glycerol, the glycerol can reduce interface energy, promote diffusion and improve the adhesive force between polylactic acid and a biodegradation agent, and meanwhile, the favorable hydrophilicity of soybeans and corns is utilized to facilitate the invasion and growth of microorganisms, so that the biodegradation of the microorganisms is promoted.
The preparation method of the self-cleaning or self-degradation temporary plugging agent of the second preparation embodiment comprises the following specific steps:
s1, processing the mixture of the soybeans and the corns to prepare a particle mixture with the particle size of 0.3-0.8mm, adding the particle mixture into water, heating and fully stirring for dissolving to enable the particle mixture to be gelatinized;
the gelatinization time is controlled to be 1.5h, and the heating temperature is controlled to be within the range of 75-85 ℃.
S2, adding polylactic acid, glycerol and polycaprolactone into the solution, and stirring uniformly;
s3, sequentially adding a thickening agent and a cross-linking agent into the solution, dropwise adding an alkaline solution, heating to 80 ℃, and waiting for reaction for 5 hours to obtain a gel product;
and S4, extruding the gel product through a double-screw extruder, conveying the gel product into a granulator, and crushing the gel product by the granulator to obtain the self-cleaning or self-degradation temporary plugging agent.
Wherein the temperature of the main machine of the double-screw extruder is 170-180 ℃, and the rotating speed of the granulator is 100-200 r/min.
Example three:
a self-cleaning or self-degrading temporary plugging agent comprises the following raw materials in percentage by weight, based on 100% of the total weight of the self-cleaning or self-degrading temporary plugging agent:
40-50% of polylactic acid;
the dosage of the biological degradation agent is 30-35 percent;
the biodegradable agent is a mixture of soybeans and corns, the weight ratio of the soybeans to the corns in the mixture is 2.5:1, and the particle size of the biodegradable agent is 0.3-0.8 mm.
Glycerol, the amount is 2.5% -4%;
polycaprolactone, the consumption is 4.5% -6%;
the amount of the thickening agent is 5.5 to 7 percent;
the thickening agent is one of sodium bromide, potassium chloride and cesium formate.
1.5 to 3 percent of alkaline solution;
the alkaline solution is one of a sodium carbonate solution and a sodium hydroxide solution, the mass fraction of alkaline chemical components of the alkaline solution is 10% -20%, and the balance of the alkaline solution is distilled water.
The cross-linking agent, the consumption is 0.3% -0.5%;
the cross-linking agent is one of ethylene glycol diacrylate, methylene bisacrylamide, sodium borate potassium dichromate and polyethylene glycol diacrylate.
And the balance water.
The temporary plugging agent is improved by using glycerol, the glycerol can reduce interface energy, promote diffusion and improve the adhesive force between polylactic acid and a biodegradation agent, and meanwhile, the favorable hydrophilicity of soybeans and corns is utilized to facilitate the invasion and growth of microorganisms, so that the biodegradation of the microorganisms is promoted.
The preparation method of the self-cleaning or self-degradation temporary plugging agent of the third preparation embodiment comprises the following specific steps:
s1, processing the mixture of the soybeans and the corns to prepare a particle mixture with the particle size of 0.4-0.8mm, adding the particle mixture into water, heating and fully stirring for dissolving to enable the particle mixture to be gelatinized;
the gelatinization time is controlled to be 1h, and the heating temperature is controlled to be within the range of 80-85 ℃.
S2, adding polylactic acid, glycerol and polycaprolactone into the solution, and stirring uniformly;
s3, sequentially adding a thickening agent and a cross-linking agent into the solution, dropwise adding an alkaline solution, heating to 80 ℃, and waiting for reaction for 5 hours to obtain a gel product;
and S4, extruding the gel product through a double-screw extruder, conveying the gel product into a granulator, and crushing the gel product by the granulator to obtain the self-cleaning or self-degradation temporary plugging agent.
Wherein the temperature of a main machine of the double-screw extruder is 180 ℃, and the rotating speed of the granulator is 150 r/min.
In summary, the test results of the three examples show that: the self-cleaning or self-degradation temporary plugging agent and the preparation method thereof can degrade within 48 hours, the degradation cleaning rate can reach more than 90 percent, the temporary plugging agent absorbs water at the temperature of a stratum, swells and cracks, loses mechanical strength, is finally degraded into water and carbon dioxide along with time increase, can degrade automatically under the condition of the temperature of a reservoir, can degrade automatically after operation for high-water-content oil wells and water wells, simultaneously utilizes two hydrophilic components of soybean and corn, has lower purchase cost of the soybean and the corn, is convenient to purchase from the market, saves the preparation time, and is favorable for realizing rapid preparation.
Claims (8)
1. The self-cleaning or self-degrading temporary plugging agent is characterized in that the raw materials for preparing the self-cleaning or self-degrading temporary plugging agent comprise the following components in percentage by weight, based on 100 percent of the total weight of the self-cleaning or self-degrading temporary plugging agent:
40-50% of polylactic acid;
25% -35% of biodegradation agent;
2% -4% of glycerol;
polycaprolactone, the consumption is 4% -6%;
the amount of the thickening agent is 5 to 7 percent;
1-3% of alkaline solution;
the cross-linking agent, the consumption is 0.1% -0.5%;
and the balance water.
2. A self-cleaning or self-degrading temporary blocking agent according to claim 1, wherein said cross-linking agent is selected from the group consisting of ethylene glycol diacrylate, methylene bisacrylamide, sodium borate potassium dichromate, and polyethylene glycol diacrylate.
3. The self-cleaning or self-degrading temporary plugging agent according to claim 1, wherein said biodegradable agent is a mixture of soybeans and corn, the weight ratio of soybeans to corn in said mixture is 2:1, and the particle size of said biodegradable agent is 0.3-0.8 mm.
4. A self-cleaning or self-degrading temporary blocking agent according to claim 1, wherein said thickening agent is selected from the group consisting of sodium bromide, sodium chloride, potassium chloride and cesium formate.
5. The self-cleaning or self-degrading temporary plugging agent according to claim 1, wherein said alkaline solution is selected from one of sodium carbonate solution and sodium hydroxide solution, the mass fraction of alkaline chemical components of said alkaline solution is 10% -20%, and the rest of said alkaline solution is distilled water.
6. A method for preparing a self-cleaning or self-degrading temporary plugging agent, wherein the method for preparing the self-cleaning or self-degrading temporary plugging agent according to any one of claims 1 to 5 comprises the following specific steps:
s1, processing the mixture of the soybeans and the corns to prepare a particle mixture with the particle size of 0.3-0.8mm, adding the particle mixture into water, heating and fully stirring for dissolving to enable the particle mixture to be gelatinized;
s2, adding polylactic acid, glycerol and polycaprolactone into the solution, and stirring uniformly;
s3, sequentially adding a thickening agent and a cross-linking agent into the solution, dropwise adding an alkaline solution, heating to 80 ℃, and waiting for reaction for 5 hours to obtain a gel product;
and S4, extruding the gel product through a double-screw extruder, conveying the gel product into a granulator, and crushing the gel product by the granulator to obtain the self-cleaning or self-degradation temporary plugging agent.
7. The method of claim 6, wherein in S1, the gelatinization time is controlled to be 1-1.5h, and the heating temperature is controlled to be 75-85 ℃.
8. The method as claimed in claim 6, wherein in S4, the temperature of the main machine of the twin-screw extruder is 170-180 ℃, the rotation speed of the pelletizer is 100-200 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281327.2A CN112552889A (en) | 2020-11-16 | 2020-11-16 | Self-cleaning or self-degrading temporary plugging agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281327.2A CN112552889A (en) | 2020-11-16 | 2020-11-16 | Self-cleaning or self-degrading temporary plugging agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112552889A true CN112552889A (en) | 2021-03-26 |
Family
ID=75042478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011281327.2A Pending CN112552889A (en) | 2020-11-16 | 2020-11-16 | Self-cleaning or self-degrading temporary plugging agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112552889A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136186A (en) * | 2021-04-07 | 2021-07-20 | 西安石油大油气科技有限公司 | Self-degradation temporary plugging agent capable of adjusting degradation aging for oil exploitation and preparation process thereof |
| CN116285920A (en) * | 2022-12-22 | 2023-06-23 | 泰坦(天津)能源技术有限公司 | Degradable fiber temporary plugging agent and application thereof as fracturing fluid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653673A (en) * | 2012-01-05 | 2012-09-05 | 中国石油天然气股份有限公司 | Biodegradable temporary plugging agent |
| CN103361040A (en) * | 2013-08-06 | 2013-10-23 | 东北石油大学 | Temporary plugging agent and preparation method thereof |
| CN105647496A (en) * | 2016-01-30 | 2016-06-08 | 张向南 | Expandable biopolymer temporary plug profile control agent and preparation method thereof |
| US20180135399A1 (en) * | 2015-04-03 | 2018-05-17 | Schlumberger Technology Corporation | A method for treating wells with a plurality of perforated intervals (variants) |
| CN108441197A (en) * | 2018-03-29 | 2018-08-24 | 西安卓识油田技术服务有限公司 | A kind of low temperature temporarily blocks up diversion agent and preparation method thereof from degradation high-strength compound |
| CN108531152A (en) * | 2017-03-01 | 2018-09-14 | 中国石油天然气股份有限公司 | Low-density high-strength degradable temporary plugging agent and preparation method thereof |
| CN110669484A (en) * | 2019-09-17 | 2020-01-10 | 大港油田集团有限责任公司 | Degradable temporary plugging agent for well repair and preparation method thereof |
-
2020
- 2020-11-16 CN CN202011281327.2A patent/CN112552889A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653673A (en) * | 2012-01-05 | 2012-09-05 | 中国石油天然气股份有限公司 | Biodegradable temporary plugging agent |
| CN103361040A (en) * | 2013-08-06 | 2013-10-23 | 东北石油大学 | Temporary plugging agent and preparation method thereof |
| US20180135399A1 (en) * | 2015-04-03 | 2018-05-17 | Schlumberger Technology Corporation | A method for treating wells with a plurality of perforated intervals (variants) |
| CN105647496A (en) * | 2016-01-30 | 2016-06-08 | 张向南 | Expandable biopolymer temporary plug profile control agent and preparation method thereof |
| CN108531152A (en) * | 2017-03-01 | 2018-09-14 | 中国石油天然气股份有限公司 | Low-density high-strength degradable temporary plugging agent and preparation method thereof |
| CN108441197A (en) * | 2018-03-29 | 2018-08-24 | 西安卓识油田技术服务有限公司 | A kind of low temperature temporarily blocks up diversion agent and preparation method thereof from degradation high-strength compound |
| CN110669484A (en) * | 2019-09-17 | 2020-01-10 | 大港油田集团有限责任公司 | Degradable temporary plugging agent for well repair and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136186A (en) * | 2021-04-07 | 2021-07-20 | 西安石油大油气科技有限公司 | Self-degradation temporary plugging agent capable of adjusting degradation aging for oil exploitation and preparation process thereof |
| CN113136186B (en) * | 2021-04-07 | 2022-07-01 | 西安石油大油气科技有限公司 | Self-degradation temporary plugging agent capable of adjusting degradation aging for oil exploitation and preparation process thereof |
| CN116285920A (en) * | 2022-12-22 | 2023-06-23 | 泰坦(天津)能源技术有限公司 | Degradable fiber temporary plugging agent and application thereof as fracturing fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11959015B2 (en) | Double-response self-degradable temporary plugging agent and preparation method thereof | |
| CN112552889A (en) | Self-cleaning or self-degrading temporary plugging agent and preparation method thereof | |
| CN108441197B (en) | Low-temperature self-degradation high-strength composite temporary plugging diversion agent and preparation method thereof | |
| CN104498007B (en) | A kind of temporary blocking gel of Low Damage and preparation method for low-pressure gas well well workover | |
| CN111410828B (en) | Preparation method of plant wood powder/montmorillonite filled high-performance fully biodegradable polylactic acid composite material | |
| CN101659750A (en) | Preparation method of modified straw powder, modified straw powder and biodegradable material | |
| CN101445615B (en) | Soyabean protein/dialdehyde starch/nano silver composite membrane, preparation method and application thereof | |
| CN103541034A (en) | Flame-retardant Lyocell fiber and preparation method thereof | |
| CN110628396B (en) | Environment-friendly temperature-resistant salt-resistant filtrate reducer for well drilling and preparation method thereof | |
| CN115612467B (en) | Nanofiber composite high-strength fracturing temporary plugging agent and preparation method thereof | |
| CN112852133A (en) | Anti-droplet PLA/PVA composite material and preparation method thereof | |
| JP2018178012A (en) | Resin modifier, resin composition, solid electrolyte, lithium ion secondary battery, and method for producing resin modifier | |
| CN102978737B (en) | Method for preparing blend fibers of celluloses and high-fluidity elastomers | |
| CN112225913B (en) | Preparation method of nano-cellulose/acrylamide/graphene oxide self-healing hydrogel | |
| CN115386355A (en) | High-strength temporary plugging agent for medium and low temperature and preparation method thereof | |
| CN110591261B (en) | Pre-dispersed masterbatch of vulcanization crosslinking activator of acrylate rubber and preparation method thereof | |
| CN105237815B (en) | A kind of environment-friendly type macromolecule material and preparation method thereof | |
| CN104910435A (en) | Photodegradable-biodegradable environmental-friendly plastic film and preparation method thereof | |
| CN111117562A (en) | Enzyme modified biomass wood adhesive and preparation method thereof | |
| CN116285920A (en) | Degradable fiber temporary plugging agent and application thereof as fracturing fluid | |
| CN115160669B (en) | Formula and method for manufacturing new rubber product by using regenerated tread rubber powder | |
| CN105037749A (en) | Cellulose solution and preparation method thereof | |
| CN108659424A (en) | A kind of water dissolving type prilling process of modified polyvinylalcohol | |
| CN115584252B (en) | Temporary plugging agent for fracturing operation well repair and preparation method thereof | |
| CN109627378A (en) | Hydrophobic association polymer and preparation method thereof, heterogeneous carbonate reservoir acid fracturing visco-elastic surfactant acid and preparation method 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |
|
| RJ01 | Rejection of invention patent application after publication |