CN102321460A - A kind of oil and gas wells in oil fields well cementation is with micro foam agent and preparation method thereof - Google Patents
A kind of oil and gas wells in oil fields well cementation is with micro foam agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of oil and gas wells in oil fields well cementation and use micro foam agent; Micro foam agent work in-process and silicate clay mineral by weight ratio 1: 25~35 are made into; The micro foam agent work in-process are made into by the component of following weight part: 7~11 parts colophonium powder, 4~7 parts silicate saponification agent, 0.7~1.3 part high temperature resistance combinations-of surfactants, 1.0~3.0 parts well cementation toughener and 8~12 parts water; Wherein silicate clay mineral is sepiolite clay or lithium bentonite; Silicate saponification agent is water glass or potassium silicate; The well cementation toughener is tri-isopropanolamine or trolamine, and the high temperature resistance combinations-of surfactants is 1: 1 OP-10 of weight ratio and SP-80, perhaps 1: 1 APG of weight ratio and SP-80; The present invention also provides the preparation method of said micro foam agent, has set up foam exquisiteness, good stability, blending process is simple, overall performance is good novel extremely-low density microbubble well cementing mortar architecture with this.
Description
Technical field
The invention belongs to oil cementing technology field, particularly a kind of oil and gas wells in oil fields well cementation is with micro foam agent and preparation method thereof.
Background technology
The foam cementing concrete slurry is a kind of extremely-low density cementing slurry, can be applied to the well cementing operation of packing low pressure leakiness stratum, shallow gas pay and long interval isolation well.In casing and cementing, use and have following advantage:
1. low density, least density can reach 0.72g/cm
32. help improving the mud displacement efficiency, this is because foam slurry has higher viscosity, helps the not runny mud of displacement; 3. has relative high compression strength (under the equal densities condition); 4. owing to have compressibility, therefore can compensate cementitious grout weightlessness, help anti-gas channeling and improve interface cementing strength; 5. under high-temperature and high-pressure conditions, conventional relatively cement stone has better toughness; 6. have lower rate of permeation and dehydration, suitable thixotropic property can adapt to the cementing requirement of complicated well; 7. relatively low operating cost, more conventional low-density cement mortar cost reduces about 1/3rd.
The inflation method of foam cementing concrete slurry mainly contains two kinds of methods at present:
(1) uses chemical agent attack in cementing slurry to produce nitrogen, add other admixture such as suds-stabilizing agent etc., form a kind of uniform and stable foamed cement.The shortcoming of this method is that chemical agent uses kind many, and foaming agent is mixed and requires height, the bad control of the process of getting angry.
(2) mechanical aeration foam cementing concrete slurry.U.S. Halliburton Company is devoted to machinery always annotates the research of nitrogen foam slurry cementing technology and improves work, has developed corresponding admixture, computer control system and supporting site construction technology technology.Foam slurry is made up of clean slurry, nitrogen, suds-stabilizing agent and grout treatment agent.During site operation, with the clean slurry of the mixing water preparation that contains various admixtures, form foam slurry through nitrogen pump nitrogen injection in clean slurry by cementing truck, the size of annotating the nitrogen amount according to the cement slurry density of Site Design by computer controlled automatic.The main drawback of this method is a complex equipments, and cost is high, and construction technology is numerous and diverse.
The used common rosin thermopolymer air of construction industry directly adds cementing slurry, and the subject matter of existence is: grout cured body ultimate compression strength is had tangible attenuating effect, and foam size is big, and stability is bad, is unfavorable for being pumped into oil gas well down-hole; High temperature resistant property is poor; The on-the-spot preparation of liquid prod foam slurry difficulty.
Because the long-term exploitation of fld; Most of hydrocarbon zone has been in pressure state in debt; In the oil gas well cementing operation process, usually can miss, be badly in need of novel foam cementing concrete slurry additive and correlation technique, form low density leak-proof leak-stopping well cementing mortar architecture.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; The object of the present invention is to provide the well cementation of a kind of oil and gas wells in oil fields with micro foam agent and preparation method thereof, set up foam exquisiteness, good stability, blending process is simple, overall performance is good novel extremely-low density microbubble well cementing mortar architecture with this.
To achieve these goals, the technical scheme of the present invention's employing is:
Micro foam agent is used in the well cementation of a kind of oil and gas wells in oil fields, is made into by the micro foam agent work in-process and the silicate clay mineral of weight ratio 1: 25~35;
Said micro foam agent work in-process are made into by the component of following weight part:
Wherein,
Described silicate saponification agent is water glass or potassium silicate;
Described high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80, perhaps 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
Said well cementation toughener is tri-isopropanolamine or trolamine;
Described silicate clay mineral is sepiolite clay or lithium bentonite.
The present invention also provides the preparation method of said oil and gas wells in oil fields well cementation with micro foam agent, comprises the steps:
The first step; In the Agitation Tank of belt stirrer, inject the water of 8-12 weight part; Stirring is warmed to 80-90 ℃, and it is 50% solution that silicate saponification agent is mixed with massfraction, and this silicate saponification agent solution of 4-7 weight part is joined in the said Agitation Tank; Rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 7-11 weight part in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the well cementation toughener of 1.0-3.0 weight part and the high temperature resistance combinations-of surfactants of 0.7-1.3 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h, evenly gained synthetic product water cut in back is 20-27%, i.e. the micro foam agent work in-process;
The 4th step, with micro foam agent work in-process cooling back and silicate clay mineral by weight 1: the mixed of 25-35 is pulverized, and crosses 120 mesh sieves, promptly get oil and gas wells in oil fields and cements the well and use micro foam agent;
Wherein,
Described silicate saponification agent is water glass or potassium silicate;
Described high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80, perhaps 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
Said well cementation toughener is tri-isopropanolamine or trolamine;
Described silicate clay mineral is sepiolite clay or lithium bentonite.
Nonionogenic tenside OP-10, composition are TX10s, and needs of the present invention are promptly satisfied in the commercially available prod.
Nonionogenic tenside SP-80, i.e. Arlacel-80, composition is a sorbitan monooleate, needs of the present invention are promptly satisfied in the commercially available prod.
The colophonium powder of using in the invention is the colophonium powder of conventional meaning, and it is done the resin of tapping and getting from pine tree and processes through pulverizing, and staple is a sylvic acid.
The water of using in the invention is common clear water, and the tap water of the industry or the usefulness of living all can be satisfied the demand.
Compared with prior art, the present invention replaces caustic soda and soda ash as the saponifying agent of colophonium powder with silicate, improves product saponification effect, can improve the ultimate compression strength of microbubble cementing slurry and the foam stability ability of system again; With the wall thickness and the intensity of silicate mineralss such as sepiolite increase microbubble, improve the foam stability ability, strengthen the ultimate compression strength of microbubble cementing slurry simultaneously, product can conveniently be sneaked in the oil well cement at the scene, be convenient to construction; Use the high temperature resistance combinations-of surfactants, improve the inflation foam performance, further reduce microbubble size and film toughness, improve the stability of microbubble in the oil gas well cementing operation grout, improve the high temperature resistant property of micro foam agent simultaneously; The well cementation toughener be tri-isopropanolamine or trolamine in micro foam agent as the highly effective chelating agent, strengthen the film toughness of microbubble through sequestering action, stable microbubble foam system strengthens the early strength of microbubble cementing slurry.
Embodiment
Specify embodiment of the present invention below in conjunction with embodiment.
Embodiment one
Micro foam agent is used in a kind of oil and gas wells in oil fields well cementation, is made into by weight ratio 1: 30 micro foam agent work in-process and sepiolite clay;
Said micro foam agent work in-process are made into by the component of following weight part:
This oil and gas wells in oil fields well cementation comprises the steps: with the preparation method of micro foam agent
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% potassium silicate solution joins in the said Agitation Tank with 5 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the tri-isopropanolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 30 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
Embodiment two
Micro foam agent is used in a kind of oil and gas wells in oil fields well cementation, is made into by weight ratio 1: 30 micro foam agent work in-process and sepiolite clay;
Said micro foam agent work in-process are made into by the component of following weight part:
This oil and gas wells in oil fields well cementation comprises the steps: with the preparation method of micro foam agent
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% sodium silicate solution joins in the said Agitation Tank with 5 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the trolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 30 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
Embodiment three
Micro foam agent is used in a kind of oil and gas wells in oil fields well cementation, is made into by weight ratio 1: 35 micro foam agent work in-process and sepiolite clay;
Said micro foam agent work in-process are made into by the component of following weight part:
This oil and gas wells in oil fields well cementation comprises the steps: with the preparation method of micro foam agent
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% sodium silicate solution joins in the said Agitation Tank with 5 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the trolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 35 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
Embodiment four
Micro foam agent is used in a kind of oil and gas wells in oil fields well cementation, is made into by weight ratio 1: 35 micro foam agent work in-process and lithium bentonite;
Said micro foam agent work in-process are made into by the component of following weight part:
This oil and gas wells in oil fields well cementation comprises the steps: with the preparation method of micro foam agent
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% potassium silicate solution joins in the said Agitation Tank with 6 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the tri-isopropanolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and lithium bentonite are pulverized by weight 1: 35 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
Embodiment five
Micro foam agent is used in a kind of oil and gas wells in oil fields well cementation, is made into by weight ratio 1: 25 micro foam agent work in-process and lithium bentonite;
Said micro foam agent work in-process are made into by the component of following weight part:
This oil and gas wells in oil fields well cementation comprises the steps: with the preparation method of micro foam agent
The first step is injected the water of 8 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% potassium silicate solution joins in the said Agitation Tank with 4 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 11 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the trolamine of 3 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th, micro foam agent work in-process cooling back and lithium bentonite are pulverized by weight 1: 25 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
Embodiment six
Micro foam agent is used in a kind of oil and gas wells in oil fields well cementation, is made into by weight ratio 1: 25 micro foam agent work in-process and sepiolite clay;
Said micro foam agent work in-process are made into by the component of following weight part:
This oil and gas wells in oil fields well cementation comprises the steps: with the preparation method of micro foam agent
The first step is injected the water of 12 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% sodium silicate solution joins in the said Agitation Tank with 7 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 7 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the trolamine of 1 weight part and the high temperature resistance combinations-of surfactants of 1.3 weight parts in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 25 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
Claims (10)
1. micro foam agent is used in oil and gas wells in oil fields well cementation, it is characterized in that, is made into by the micro foam agent work in-process and the silicate clay mineral of weight ratio 1: 25~35;
Said micro foam agent work in-process are made into by the component of following weight part:
Wherein,
Described silicate saponification agent is water glass or potassium silicate;
Described high temperature resistance tensio-active agent is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80, perhaps 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
Said well cementation toughener is tri-isopropanolamine or trolamine;
Described silicate clay mineral is sepiolite clay or lithium bentonite.
2. micro foam agent is used in an oil and gas wells in oil fields well cementation, it is characterized in that, is made into by weight ratio 1: 30 micro foam agent work in-process and sepiolite clay;
Said micro foam agent work in-process are made into by the component of following weight part:
4. micro foam agent is used in an oil and gas wells in oil fields well cementation, it is characterized in that, is made into by weight ratio 1: 35 micro foam agent work in-process and sepiolite clay;
Said micro foam agent work in-process are made into by the component of following weight part:
6. an oil and gas wells in oil fields is cemented the well with the preparation method of micro foam agent, it is characterized in that, comprises the steps:
The first step; In the Agitation Tank of belt stirrer, inject the water of 8-12 weight part; Stirring is warmed to 80-90 ℃, and it is 50% solution that silicate saponification agent is mixed with massfraction, and this silicate saponification agent solution of 4-7 weight part is joined in the said Agitation Tank; Rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 7-11 weight part in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the well cementation toughener of 1.0-3.0 weight part and the high temperature resistance combinations-of surfactants of 0.7-1.3 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h, evenly gained synthetic product water cut in back is 20-27%, i.e. the micro foam agent work in-process;
The 4th step, with micro foam agent work in-process cooling back and silicate clay mineral by weight 1: the mixed of 25-35 is pulverized, and crosses 120 mesh sieves, promptly get oil and gas wells in oil fields and cements the well and use micro foam agent;
Wherein,
Described silicate saponification agent is water glass or potassium silicate;
Described high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80, perhaps 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
Said well cementation toughener is tri-isopropanolamine or trolamine;
Described silicate clay mineral is sepiolite clay or lithium bentonite.
7. an oil and gas wells in oil fields is cemented the well with the preparation method of micro foam agent, it is characterized in that, comprises the steps:
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% potassium silicate solution joins in the said Agitation Tank with 5 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the tri-isopropanolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 30 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
8. an oil and gas wells in oil fields is cemented the well with the preparation method of micro foam agent, it is characterized in that, comprises the steps:
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% sodium silicate solution joins in the said Agitation Tank with 5 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the trolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 30 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
9. an oil and gas wells in oil fields is cemented the well with the preparation method of micro foam agent, it is characterized in that, comprises the steps:
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% sodium silicate solution joins in the said Agitation Tank with 5 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the trolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside APG APG of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and sepiolite clay are pulverized by weight 1: 35 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
10. an oil and gas wells in oil fields is cemented the well with the preparation method of micro foam agent, it is characterized in that, comprises the steps:
The first step is injected the water of 10 weight parts in the Agitation Tank of belt stirrer, and stir and be warmed to 80-90 ℃, be that 50% potassium silicate solution joins in the said Agitation Tank with 6 weight part massfractions, rotating speed 100-400 rev/min, stir 0.5h;
Second step 90 ℃ of temperature, under rotating speed 100-400 rev/min the condition, added the colophonium powder of 8 weight parts in the solution after the first step stirs, stir 2.5h, carried out saponification reaction, when water cut is 20-27% till;
The 3rd step; Adding the tri-isopropanolamine of 2.6 weight parts and the high temperature resistance combinations-of surfactants of 1 weight part in the solution after the second step saponification reaction under 80 ℃; Stir 0.5h; Evenly gained synthetic product water cut in back is 20-27%, i.e. micro foam agent work in-process, and wherein said high temperature resistance combinations-of surfactants is 1: 1 nonionogenic tenside OP-10 of weight ratio and nonionogenic tenside SP-80;
The 4th step, micro foam agent work in-process cooling back and lithium bentonite are pulverized by weight 1: 35 mixed, cross 120 mesh sieves, promptly get the oil and gas wells in oil fields well cementation and use micro foam agent.
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CN102093876A (en) * | 2009-12-09 | 2011-06-15 | 中国石油天然气股份有限公司 | Thixotropic gel temporary plugging agent for acidification of oil layer of low-permeability oil field and preparation and application thereof |
CN101857799A (en) * | 2010-06-28 | 2010-10-13 | 西南石油大学 | Curable leaking stoppage spacer fluid and preparation method thereof |
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CN105295884A (en) * | 2015-12-10 | 2016-02-03 | 李准 | Production technology of low-temperature activating agent for petroleum oil gas well |
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