CN111286317A - Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof - Google Patents
Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof Download PDFInfo
- Publication number
- CN111286317A CN111286317A CN202010199616.1A CN202010199616A CN111286317A CN 111286317 A CN111286317 A CN 111286317A CN 202010199616 A CN202010199616 A CN 202010199616A CN 111286317 A CN111286317 A CN 111286317A
- Authority
- CN
- China
- Prior art keywords
- gel
- polyacrylamide
- chromium
- gel breaker
- temperature static
- 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
- 229920002401 polyacrylamide Polymers 0.000 title claims abstract description 63
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 50
- 239000011651 chromium Substances 0.000 title claims abstract description 50
- 230000003068 static effect Effects 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 29
- 229920000570 polyether Polymers 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 11
- 150000002978 peroxides Chemical class 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 18
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 18
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- JOLVYUIAMRUBRK-UTOQUPLUSA-N Cardanol Chemical class OC1=CC=CC(CCCCCCC\C=C/C\C=C/CC=C)=C1 JOLVYUIAMRUBRK-UTOQUPLUSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 5
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004343 Calcium peroxide Substances 0.000 claims description 4
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 4
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 claims description 4
- 235000019402 calcium peroxide Nutrition 0.000 claims description 4
- MSLRPWGRFCKNIZ-UHFFFAOYSA-J tetrasodium;hydrogen peroxide;dicarbonate Chemical compound [Na+].[Na+].[Na+].[Na+].OO.OO.OO.[O-]C([O-])=O.[O-]C([O-])=O MSLRPWGRFCKNIZ-UHFFFAOYSA-J 0.000 claims description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- -1 alkaline matter Substances 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011736 potassium bicarbonate Substances 0.000 claims description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 235000011181 potassium carbonates Nutrition 0.000 claims description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 claims description 2
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000000499 gel Substances 0.000 description 94
- 238000005516 engineering process Methods 0.000 description 13
- 239000000084 colloidal system Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 230000004151 fermentation Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000033116 oxidation-reduction process Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- CESZUODSLPRJDU-UHFFFAOYSA-N 2-methyloxirane;oxirane;propane-1,2,3-triol Chemical compound C1CO1.CC1CO1.OCC(O)CO CESZUODSLPRJDU-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/665—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
-
- 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
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/845—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/885—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/26—Gel breakers other than bacteria or enzymes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a polyacrylamide/chromium gel normal-temperature static gel breaker and a preparation method thereof, wherein the normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 0.1-20% of peroxide; 0.05-2% of alkaline substance; 0.01-20% of a surfactant; 0-20% of polyether; the balance of water; the preparation method of the gel breaker comprises the following steps: sequentially adding water, alkaline substances, a surfactant and polyether in a reactor according to a proportion, adding peroxide when the solution is cooled to room temperature, and stirring for 30-60 min; the application method of the gel breaker comprises the following steps: placing the polyacrylamide/chromium gel, the gel breaker and water in a reactor according to the mass ratio of 1: 0.1-3: 1, standing and dissolving. The preparation method of the gel breaker has the characteristics of simple operation, quick degradation, simple process and low cost. The gel breaker can be used at normal temperature, and has wide application prospect in treating polyacrylamide-containing gel in oil fields.
Description
Technical Field
The invention belongs to the technical field of chemical additives for oil extraction in oil fields, and particularly relates to a polyacrylamide/chromium gel normal-temperature static gel breaker and a preparation method thereof.
Background
The polyacrylamide is a linear water-soluble high molecular compound with wide application, and the water plugging technology based on the polyacrylamide is widely applied along with the popularization of a new polymer flooding tertiary oil recovery technology and the increase of oil displacement difficulty. In the profile control and flooding construction process, due to the fact that agents at the bottom and the edge of the tank of the liquid preparation tank are remained, the gelled solid waste of the agents needs to be recovered by cleaning the tank every year, the waste does not have a reasonable recovery mode, and the potential safety hazard of environmental protection exists. Meanwhile, the used modifying and flooding agent has stronger gelling stability, and in the operation process of a water well, the stratum modifying and flooding agent is reversely discharged due to pressure relief to block an oil pipe, so that the recovered oil pipe cannot be reused, and the cost loss is increased. In addition, the anti-spitting polyacrylamide colloid is attached with a large amount of oil stains, and is difficult to carry out environment-friendly treatment. Because the existing blockage removal technology and waste water treatment facilities of the oil field polymer injection well in China are difficult to effectively and thoroughly degrade polyacrylamide/chromium gel, the oil field environment is rapidly worsened. Therefore, degradation treatment of polyacrylamide/chromium gel at normal temperature has become an important problem to be solved for reducing pollution of oil field environment.
The shape of polyacrylamide gels is divided into two categories: the colloid is not formed, is sticky, is not easy to cut and is difficult to break under stirring; the other type is formed colloid, although the colloid is easy to cut, the colloid is elastic colloid, and the gel breaker is difficult to rapidly penetrate into the colloid to realize rapid gel breaking.
At present, the polyacrylamide is difficult to be effectively degraded by oil field wastewater treatment facilities in China, and each oil field has a plurality of methods and technical measures for solving the problem of polymer injection blockage, wherein the physical technical aspects comprise: ultrasonic wave technology, low-frequency pulse technology, electric pulse technology, water conservancy vibration technology, artificial earthquake technology, high-energy gas fracturing technology and high-pressure water jet technology. However, due to the characteristics that reasonable parameters need to be set when the physical technology is applied, the requirement is higher, the stratum condition needs to be monitored in real time, the application condition and the construction equipment have higher requirements, and the like, the popularization and the application in a large range are not easy.
The chemical technology is widely used due to the characteristics of wide application, pure technology, simple construction process and the like, for example, the patent application publication No. CN 109504359A "a macromolecular polyacrylamide degradation blocking remover for oil extraction in oil field and a preparation method thereof" comprises the following raw materials by weight percent: 10-30% of ammonium salt A, 20-40% of ammonium salt B, 20-40% of sulfate compound, 0.1-0.5% of surfactant, 10-40% of anticorrosion and reaction rate control agent and 5-15% of anticorrosion and dispersing agent. The method is suitable for polyacrylamide gel blocks injected into wells, and the requirement of the use temperature of the method is more than 40 ℃, so that the method is not suitable for breaking a large amount of polyacrylamide gel on the ground at normal temperature, and is not beneficial to popularization and use because the gel breaking operation cannot be carried out due to difficulty in heating in oil extraction sites, particularly in regions with severe cold temperatures.
Publication No. CN1150967A preparation method of oil well fracturing fluid low-temperature gel breaker, which proposes a scheme for breaking gel by adopting an oxidation-reduction reaction system at normal temperature, and is completed by adopting the following chemical reaction formula: 1. reaction of a hydrogen peroxide-ferrite oxidation-reduction system 2 reaction of a persulfate-ferrite oxidation-reduction system 3 reaction of a persulfate-sulfite oxidation-reduction system, and adding the gel breaker prepared by the chemical reaction method into fracturing fluid. However, the oxidant-reductant is a two-component medicament, so that the use is inconvenient, particularly, the two-component medicament reacts quickly once being mixed, the effect lasting is short, and the permeation of the colloid needs a long time, so that the effective gel breaking effect is difficult to achieve in practice.
The application of biotechnology to degrade polyacrylamide has also been studied, but the practical application is not mature enough. For example, patent application publication No. CN 110194572A "a method for degrading polyacrylamide in domestic sludge", the method for degrading polyacrylamide comprises: after domestic sludge with the water content of 80% -85% and crushed straws are put into a fermentation kettle according to the weight ratio of 1: 1, MOF-Ti and high-temperature zymophyte are added: the temperature of the fermentation kettle is kept at 90-110 ℃, the fermentation kettle is started to stir at high temperature and ferment for 2-3 h, the fermented domestic sludge is paved on the ground for natural cooling and dehydration, and the decomposed harmless domestic sludge is obtained.
Disclosure of Invention
The technical task of the invention is to provide a polyacrylamide/chromium gel normal temperature static gel breaker and a preparation method thereof aiming at the defects of the prior art.
The invention provides a polyacrylamide/chromium gel normal-temperature static gel breaker, which comprises the following raw materials in percentage by mass: 0.1-20% of peroxide; 0.05-2% of alkaline substance; 0.01-20% of a surfactant; 0-20% of polyether; the balance being water.
Further, the peroxide is one of sodium peroxide, calcium peroxide, sodium carbonate peroxide and hydrogen peroxide.
Further, the alkaline substance is one of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and calcium hydroxide.
Further, the surfactant is one of saturated cardanol polyoxyethylene ether, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether.
Furthermore, the addition number of the saturated cardanol polyoxyethylene ether and the ethylene oxide of the fatty alcohol polyoxyethylene ether is n-5-25.
Further, if the system is used and foam is required to be inhibited, polyether is required to be added, and the polyether is one of polyol type polyether, block polyether of ethylene oxide and propylene oxide and fatty amine polyether.
Further, the molecular weight of the polyether is 3000-20000.
The invention relates to a preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker, which comprises the following steps: adding water, alkaline matter, surfactant and polyether into the reactor in certain proportion, cooling the solution to room temperature, adding peroxide and stirring for 30-60 min.
The application method of the polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following steps: placing the polyacrylamide/chromium gel, the gel breaker and water in a reactor according to the mass ratio of 1: 0.1-3: 1, standing and dissolving.
Further, the applicable temperature of the gel breaker is 1-60 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. the polyacrylamide/chromium gel normal-temperature static gel breaker provided by the invention is produced by effectively breaking polyacrylamide/chromium gel through chemical reaction, wherein the surfactant has two purposes of wetting, permeating and foaming. The wetting and penetrating action can enable the gel breaker to penetrate into the deep part of the colloid, increase the action radius and enable the gel breaker to be kept for a long time so as to be matched with the reaction of the gel breaker and the colloid to generate gas; after the gel breaker and polyacrylamide in the gel generate gases such as ammonia gas, the surfactant enables bubbles to float in the gel, finally the gel is suspended in the solution, and the gel is expanded and broken, so that the gel breaking effect is improved, and the gel is broken into water-soluble substances. In addition, when the gel breaker is used in a downhole, the addition of the surfactant is also beneficial to well washing operation.
2. The gel breaker provided by the invention has the advantages that the peroxide is combined with the alkaline substance, the free radical oxidation chain breaking and the amido bond hydrolysis chain breaking are combined to act together, and the breaking of polyacrylamide/chromium gel is accelerated.
3. The gel breaker can be used at normal temperature, is easy to control, does not need stirring, has a simple process, can quickly permeate into the gel, has high gel breaking speed, can be popularized in a large scale, and is suitable for being used in oil extraction sites.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The normal-temperature static polyacrylamide/chromium gel breaker comprises the following raw materials in percentage by mass: 2% of sodium hydroxide, 0.01% of saturated cardanol polyoxyethylene ether (ethylene oxide n ═ 5), 20% of hydrogen peroxide, 0% of polyether and the balance of water; wherein the hydrogen peroxide is 27.5 percent of aqueous hydrogen peroxide solution by mass fraction.
The preparation method of the polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following steps: sequentially adding water, alkaline substances, a surfactant and polyether in a reactor according to a proportion, adding peroxide when the solution is cooled to room temperature, and stirring for 30-60 min; in the embodiment, water, sodium hydroxide and saturated cardanol polyoxyethylene ether are sequentially added into a reactor according to a certain proportion, when the solution is cooled to room temperature, hydrogen peroxide is added, and stirring is carried out for 30-60 min.
The application method of the prepared polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following steps: adding 60g of gel breaker, 20g of water and 20g of polyacrylamide/chromium gel into a reactor according to the mass ratio of polyacrylamide/chromium gel to gel breaker to water of 1: 3: 1, and standing for dissolving.
Example 2
The normal-temperature static polyacrylamide/chromium gel breaker comprises the following raw materials in percentage by mass: 1% of sodium hydroxide, 0.05% of saturated cardanol polyoxyethylene ether (ethylene oxide n ═ 13), 20% of hydrogen peroxide, 10% of polyhydric alcohol type polyether (glycerol ethylene oxide-propylene oxide block polyether), and the balance of water; wherein the hydrogen peroxide is 27.5 percent of aqueous hydrogen peroxide solution by mass fraction.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 3
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 0.75% of sodium hydroxide, 12.5% of saturated cardanol polyoxyethylene ether (ethylene oxide n ═ 13), 10% of hydrogen peroxide, 5% of ethylene oxide-propylene oxide block polyether, and the balance of water; wherein the hydrogen peroxide is 27.5 percent of aqueous hydrogen peroxide solution by mass fraction.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 4
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 1 percent of calcium hydroxide, 5 percent of sodium dodecyl benzene sulfonate, 10 percent of sodium peroxide, 15 percent of ethylene oxide and propylene oxide block polyether, and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 5
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 1.5 percent of potassium hydroxide, 7.5 percent of fatty alcohol-polyoxyethylene ether (ethylene oxide n is 15), 5 percent of calcium peroxide, 7.5 percent of ethylene oxide-propylene oxide block polyether and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 6
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 0.05% of sodium carbonate, 0.01% of sodium dodecyl benzene sulfonate, 0.1% of sodium carbonate peroxide, 15% of ethylene oxide and propylene oxide block polyether, and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 7
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 0.75% of potassium hydroxide, 12.5% of fatty alcohol-polyoxyethylene ether (ethylene oxide n is 15), 1% of sodium peroxide, 0.25% of fatty amine polyether (dodecyl amine polyoxyethylene ether), and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 8
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 2 percent of potassium bicarbonate, 20 percent of fatty alcohol-polyoxyethylene ether (ethylene oxide n is 25), 20 percent of sodium peroxide, 0.5 percent of ethylene oxide-propylene oxide block polyether and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 9
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 1.85 percent of sodium bicarbonate, 17.5 percent of sodium dodecyl benzene sulfonate, 7.5 percent of calcium peroxide, 0 percent of polyether and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
Example 10
A preparation method of a polyacrylamide/chromium gel normal-temperature static gel breaker comprises the following raw materials in percentage by mass: 0.05% of potassium carbonate, 1.75% of fatty alcohol-polyoxyethylene ether (ethylene oxide n is 15), 15% of sodium carbonate peroxide, 20% of fatty amine polyether (dodecyl amine polyoxyethylene ether), and the balance of water.
The preparation and use methods of the polyacrylamide/chromium gel normal-temperature static gel breaker are the same as those in example 1 except that the components and the contents are different.
The application temperature of the gel breaker provided by the embodiment of the invention is 1-60 ℃, the gel breaker can quickly permeate into a colloid in the using process, the gel breaking speed is high, the colloid can be decomposed and dissolved within 24 hours, and the gel breaking phenomenon and the sol dissolving time of each embodiment are shown in table 1.
TABLE 1 Polyacrylamide/chromium gelling phenomena
The technical idea of the present invention is described in the above technical solutions, and the protection scope of the present invention is not limited thereto, and any changes and modifications made to the above technical solutions according to the technical essence of the present invention belong to the protection scope of the technical solutions of the present invention.
Claims (10)
1. The normal-temperature static polyacrylamide/chromium gel breaker is characterized by comprising the following raw materials in percentage by mass: 0.1-20% of peroxide; 0.05-2% of alkaline substance; 0.01-20% of a surfactant; 0-20% of polyether; the balance being water.
2. The polyacrylamide/chromium gel normal temperature static gel breaker as claimed in claim 1, wherein the peroxide is one of sodium peroxide, calcium peroxide, sodium carbonate peroxide and hydrogen peroxide.
3. The polyacrylamide/chromium gel normal temperature static gel breaker as claimed in claim 1, wherein the alkaline substance is one of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and calcium hydroxide.
4. The polyacrylamide/chromium gel normal temperature static gel breaker as claimed in claim 1, wherein the surfactant is one of saturated cardanol polyoxyethylene ether, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether.
5. The polyacrylamide/chromium gel normal-temperature static gel breaker according to claim 4, wherein the addition number of the saturated cardanol polyoxyethylene ether and the ethylene oxide of fatty alcohol polyoxyethylene ether is n-5-25.
6. The polyacrylamide/chromium gel normal temperature static gel breaker as claimed in claim 1, wherein the polyether is one of polyol type polyether, block polyether of ethylene oxide and propylene oxide, and aliphatic amine polyether.
7. The polyacrylamide/chromium gel normal temperature static gel breaker as claimed in claim 6, wherein the molecular weight of the polyether is 3000-20000.
8. The preparation method of the polyacrylamide/chromium gel normal-temperature static gel breaker according to any one of claims 1-5, characterized by comprising the following steps: adding water, alkaline matter, surfactant and polyether into the reactor in certain proportion, cooling the solution to room temperature, adding peroxide and stirring for 30-60 min.
9. The use method of the polyacrylamide/chromium gel normal temperature static gel breaker according to any one of claims 1-5, characterized by comprising the following steps: placing the polyacrylamide/chromium gel, the gel breaker and water in a reactor according to the mass ratio of 1: 0.1-3: 1, standing and dissolving.
10. The use method of the polyacrylamide/chromium gel normal temperature static gel breaker as claimed in claim 9, wherein the applicable temperature of the gel breaker is 1-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199616.1A CN111286317B (en) | 2020-03-20 | 2020-03-20 | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199616.1A CN111286317B (en) | 2020-03-20 | 2020-03-20 | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111286317A true CN111286317A (en) | 2020-06-16 |
| CN111286317B CN111286317B (en) | 2021-08-31 |
Family
ID=71018717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010199616.1A Active CN111286317B (en) | 2020-03-20 | 2020-03-20 | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111286317B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403055A (en) * | 2021-08-18 | 2021-09-17 | 北京石大瑞伽石油技术开发有限公司 | Water-soluble polymer degradation agent and preparation and application thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009153686A2 (en) * | 2008-06-20 | 2009-12-23 | Schlumberger Canada Limited | Slickwater treatment fluid and method |
| CN102796501A (en) * | 2012-08-16 | 2012-11-28 | 大庆百晟石油科技有限公司 | Ternary composite chain scission solution |
| WO2012166561A2 (en) * | 2011-05-28 | 2012-12-06 | Avello Bioenergy, Inc. | Compositions, methods, apparatus, and systems for incorporating bio-derived materials in drilling and hydraulic fracturing |
| CN103881674A (en) * | 2013-10-18 | 2014-06-25 | 中国石油化工股份有限公司 | Combined blocking remover for polymer injection blocking well section plug and preparation method and application of combined blocking remover |
| WO2015034488A1 (en) * | 2013-09-04 | 2015-03-12 | Halliburton Energy Services, Inc. | Hydrolyzable compounds for treatment of a subterranean formation and methods of using the same |
| US20170210969A1 (en) * | 2016-01-25 | 2017-07-27 | Peroxychem Llc | Well treatment methods and compositions |
| US20180079952A1 (en) * | 2015-03-25 | 2018-03-22 | Arkema Inc. | Colored organic peroxide compositions and methods for breaking hydraulic fracturing fluids |
| CN107989587A (en) * | 2017-10-27 | 2018-05-04 | 中国石油化工股份有限公司 | A kind of method that the injury of cellulose fracturing fluid is reduced using microorganism |
| CN109233774A (en) * | 2017-07-11 | 2019-01-18 | 中国石油天然气股份有限公司 | Blocking remover and preparation method and application thereof |
-
2020
- 2020-03-20 CN CN202010199616.1A patent/CN111286317B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009153686A2 (en) * | 2008-06-20 | 2009-12-23 | Schlumberger Canada Limited | Slickwater treatment fluid and method |
| WO2012166561A2 (en) * | 2011-05-28 | 2012-12-06 | Avello Bioenergy, Inc. | Compositions, methods, apparatus, and systems for incorporating bio-derived materials in drilling and hydraulic fracturing |
| CN102796501A (en) * | 2012-08-16 | 2012-11-28 | 大庆百晟石油科技有限公司 | Ternary composite chain scission solution |
| WO2015034488A1 (en) * | 2013-09-04 | 2015-03-12 | Halliburton Energy Services, Inc. | Hydrolyzable compounds for treatment of a subterranean formation and methods of using the same |
| CN103881674A (en) * | 2013-10-18 | 2014-06-25 | 中国石油化工股份有限公司 | Combined blocking remover for polymer injection blocking well section plug and preparation method and application of combined blocking remover |
| US20180079952A1 (en) * | 2015-03-25 | 2018-03-22 | Arkema Inc. | Colored organic peroxide compositions and methods for breaking hydraulic fracturing fluids |
| US20170210969A1 (en) * | 2016-01-25 | 2017-07-27 | Peroxychem Llc | Well treatment methods and compositions |
| CN109233774A (en) * | 2017-07-11 | 2019-01-18 | 中国石油天然气股份有限公司 | Blocking remover and preparation method and application thereof |
| CN107989587A (en) * | 2017-10-27 | 2018-05-04 | 中国石油化工股份有限公司 | A kind of method that the injury of cellulose fracturing fluid is reduced using microorganism |
Non-Patent Citations (6)
| Title |
|---|
| KHAN, NASIR: "Experimental and mechanism study: Partially hydrolyzed polyacrylamide gel degradation and deplugging via ultrasonic waves and chemical agents", 《ULTRASONICS SONOCHEMISTRY》 * |
| 刘进祥: "表面活性剂和碱对Cr3+聚丙烯酰胺凝胶成胶效果的影响及作用机理", 《石油学报》 * |
| 吴世敏: "《简明精细化工大辞典》", 30 June 1999, 辽宁科学技术出版社 * |
| 周伯劲: "《试剂化学 上》", 31 August 1983, 广东科技出版社 * |
| 赵洪波: "《胶体与表面化学理论及应用研究》", 31 March 2016, 黑龙江大学出版社 * |
| 郑延成等: "破除聚合物凝胶的试验研究", 《石油钻采工艺》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403055A (en) * | 2021-08-18 | 2021-09-17 | 北京石大瑞伽石油技术开发有限公司 | Water-soluble polymer degradation agent and preparation and application thereof |
| CN113403055B (en) * | 2021-08-18 | 2021-11-09 | 北京石大瑞伽石油技术开发有限公司 | Water-soluble polymer degradation agent and preparation and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111286317B (en) | 2021-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5226479A (en) | Fracturing fluid having a delayed enzyme breaker | |
| CN111534290B (en) | Water-lock releasing agent for reservoir protection drilling fluid and preparation and use methods thereof | |
| CN103666437B (en) | Fracturing fluid | |
| CN102876313B (en) | Hydrophobically associated polymer-composite surfactant binary combination flooding system and method | |
| CN101608113A (en) | A kind of prescription that utilizes the biological enzyme formulation preparing fracturing fluid | |
| CN108102633B (en) | Viscoelastic acid-based fracturing fluid and preparation method thereof | |
| CN109057753B (en) | Oil well blockage removing method | |
| WO2014086068A1 (en) | Fracturing method of online continuous preparation based on liquid polymer | |
| US20200308474A1 (en) | Method for oil displacement using dispersed particle gel-strengthened polymer ternary composite displacement system | |
| CN107286918B (en) | Efficient well flushing fluid for well flushing of low-permeability sandstone oil reservoir | |
| CN108084986A (en) | A kind of recyclable polymer fracturing fluid crosslinking agent and its preparation method and application | |
| CN111286317B (en) | Polyacrylamide/chromium gel normal-temperature static gel breaker and preparation method thereof | |
| CN108690590B (en) | Gas well foam scrubbing agent and preparation method and application thereof | |
| CN105968258A (en) | Clean and environmentally friendly composite polymer for fracturing fluid and preparing method thereof | |
| CN106590560A (en) | Gel temporary plugging agent | |
| CN107312516B (en) | Biological source compound oil displacement system, preparation method and oil displacement method | |
| CN101385955B (en) | Foam dedusting agent for mine | |
| CN114196390A (en) | Composite oil displacement fracturing fluid and preparation method and application thereof | |
| CN108048068A (en) | Chemical energy-increasing efficient cleanup additive and preparation method and use method thereof | |
| CN102304356B (en) | Method for preparing environmentally-friendly type water-based fracturing fluid by utilizing environmentally-friendly type multiple-effect thickening agent | |
| CN109999400B (en) | Environment-friendly slurry macromolecule breaking agent and preparation method and application thereof | |
| CN112961662A (en) | Wetting reversal agent, wetting reversal liquid and pressure flooding water injection method | |
| CN116814234A (en) | Discharge assisting agent for fracturing and preparation method and application thereof | |
| CN111592870A (en) | Composite clean fracturing fluid, preparation method and application thereof in oil-gas field fracturing | |
| CN116063622B (en) | Fracturing fluid thickener, oil displacement fracturing fluid and application |
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 |