CN108690587A - The capsule suede agent of natural gas well suede bag pressure well liquid - Google Patents
The capsule suede agent of natural gas well suede bag pressure well liquid Download PDFInfo
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- CN108690587A CN108690587A CN201810490413.0A CN201810490413A CN108690587A CN 108690587 A CN108690587 A CN 108690587A CN 201810490413 A CN201810490413 A CN 201810490413A CN 108690587 A CN108690587 A CN 108690587A
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- 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
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
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- 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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Abstract
The present invention relates to a kind of capsule suede agent of natural gas well suede bag pressure well liquid, the natural gas well suede bag pressure well liquid capsule suede agent is made of the mixing of oil level sodium carboxymethylcellulose, the polyacrylamide of high molecular weight, crosslinked polyvinylpyrrolidone and industrial potassium chloride, the parts by weight of the oil level sodium carboxymethylcellulose are 4-6, the parts by weight of the polyacrylamide of high molecular weight are 3-4, the parts by weight of crosslinked polyvinylpyrrolidone are 1-2, and the parts by weight of industrial potassium chloride are 1-2.Its purpose is to provide one kind, and suede capsule stable structure can be made to be present in system, prevent suede bag pressure well liquid system layering etc. is unstable from happening, play the role of adjusting suede bag pressure well liquid flow pattern, and nontoxic, the natural gas well suede bag pressure well liquid capsule suede agent of safety and environmental protection simultaneously.
Description
Technical field
The present invention relates to a kind of well killing fluid inorganic agents suitable for natural gas well workover treatment, relate in particular to one kind
The capsule suede agent of natural gas well suede bag pressure well liquid.
Background technology
Natural gas well suede bag pressure well liquid uses working fluid during referring to natural gas well workover treatment.
Currently, being faced during most natural gas well workover treatments, formation leakage amount is big, can not provide safe pit shaft completes
It plays lower tubular column, salvage the problems such as junk.
The natural gas well does not have leakage control ability with traditional well killing fluid based on clear water, tight in face of the leakage of low pressure gas-bearing formation
Weight, can not be successfully kill-job, part low pressure natural gas well clear water well killing fluid wastage reaches 1000m3.A large amount of clear water leakages enter ground
Layer easily causes the reservoir damages such as water lock, Water trapping, and gas-bearing formation production capacity recovery effects are bad after leading to workover treatment, while increasing work
Industry difficulty and operating cost.For solve natural gas well workover treatment during miss control problem, some investigators from other
Leak-proof leak-stopping link introduces the blocking agents such as closure means, including gel, resin in the operation process of field.This kind of blocking agent enters natural
Solid-state or the temporary bridging structure of nearly solid-state are formed after gas reservoir, are effectively temporarily blocked up formation gas channel, are realized safe kill-job.But in stratum
Solid-state or nearly solid-state temporarily block up structural degradation difficulty, and formation gas flow channel is difficult to restore after the completion of workover treatment, leads to gas well
Yield restores difficult.
In existing closure means, it is capable of providing using foam, recyclable microvesicle as the Solid Free of representative closure means certain
Temporarily stifled stratum effect, and accelerate gas-bearing formation production capacity recovery effects after degrading.But either foam is still recycled microvesicle, self structure
Stability is poor, and especially in high temperature, high pressure, high salinity media, temporarily stifled effect is difficult to meet entire workover treatment process steady
Qualitative requirement.Meanwhile part foam system extemporaneous preparation complex process, operating cost are high.
Suede capsule fluid is that a kind of new nothing different from microvesicle microstructure found during studying microvesicle system is consolidated
Phase plugging material.The plugging material of this structure of capsule containing suede can be deformed by oil gas reservoir osmotic space or be changed performance, maximum limit
Degree ground occupy reservoir preserve with osmotic space or formation mucous layer, block leakage channel of different sizes.The pressure of the structure of capsule containing suede
Well liquid is referred to as suede bag pressure well liquid.Suede bag pressure well liquid not only have be not necessary to optional equipment can realize Solid Free density it is low, control
The advantages that leakage, stratum medium staple bag pressure well liquid form temporary bridging structure and can degrade automatically, realize formation gas stream after workover treatment
Dynamic channel is quickly opened, the fast quick-recovery of gas well yield.
The ingredient of the film layer for forming package gas courage outside the gas courage of suede capsule structure is known as capsule suede agent in the present invention.It is existing
It is gelatinized starch to have its preferable main component of the capsule suede agent effect in technology for working solution.However this kind of capsule suede dosage form at
The film of suede capsule with layer thickness still than relatively thin, intensity is relatively low, for effectively preventing in gas courage gas effusion effect less desirable.Cause
This, researches and develops new suede bag pressure well liquid capsule suede agent, for enhancing suede capsule structural strength, extends in suede capsule structural life-time, stabilising system
Suede capsule structure be of great significance.
Invention content
The purpose of the present invention is to provide one kind, and suede capsule stable structure can be made to be present in system, prevents suede bag pressure well liquid body
System's layering etc. is unstable to be happened, while playing the role of adjusting suede bag pressure well liquid flow pattern, and nontoxic, safety and environmental protection
The capsule suede agent of natural gas well suede bag pressure well liquid.
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, it is characterized in that:The natural gas well suede bag pressure well liquid is used
The agent of capsule suede is by oil level sodium carboxymethylcellulose, the polyacrylamide (molecular weight is more than or equal to 10,000,000) of high molecular weight, crosslinking
Polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, and the parts by weight of the oil level sodium carboxymethylcellulose are 4-6,
The parts by weight of the polyacrylamide of high molecular weight are 3-4, and the parts by weight of crosslinked polyvinylpyrrolidone are 1-2, industrial chlorine
The parts by weight for changing potassium are 1-2.
Preferably, the parts by weight of the oil level sodium carboxymethylcellulose are 4.2-5.8, the polyacrylamide of high molecular weight
The parts by weight of amine are 3.1-3.9, and the parts by weight of crosslinked polyvinylpyrrolidone are 1.1-1.9, the weight of industrial potassium chloride
Part is 1.1-1.9.
Preferably, the parts by weight of the oil level sodium carboxymethylcellulose are 4.4-5.6, the polyacrylamide of high molecular weight
The parts by weight of amine are 3.2-3.8, and the parts by weight of crosslinked polyvinylpyrrolidone are 1.2-1.8, the weight of industrial potassium chloride
Part is 1.2-1.8.
Preferably, the parts by weight of the oil level sodium carboxymethylcellulose are 4.6-5.4, the polyacrylamide of high molecular weight
The parts by weight of amine are 3.3-3.7, and the parts by weight of crosslinked polyvinylpyrrolidone are 1.3-1.7, the weight of industrial potassium chloride
Part is 1.3-1.7.
Preferably, the parts by weight of the oil level sodium carboxymethylcellulose are 4.8-5.2, the polyacrylamide of high molecular weight
The parts by weight of amine are 3.4-3.6, and the parts by weight of crosslinked polyvinylpyrrolidone are 1.4-1.6, the weight of industrial potassium chloride
Part is 1.4-1.6.
Preferably, the parts by weight of the oil level sodium carboxymethylcellulose are 5, the weight of the polyacrylamide of high molecular weight
Part is 3.5, and the parts by weight of crosslinked polyvinylpyrrolidone are 1.5, and the parts by weight of industrial potassium chloride are 1.5.
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, using the present invention exclusive technique and component, by stone
Oily level sodium carboxymethylcellulose, the polyacrylamide of high molecular weight and crosslinked polyvinylpyrrolidone mixing are constituted, the oil
The parts by weight of level sodium carboxymethylcellulose are 4-6, and the parts by weight of the polyacrylamide of high molecular weight are 1-2, crosslinked polyethylene
The parts by weight of pyrrolidones are 1-2.Experiment shows that the natural gas well suede bag pressure well liquid using the present invention is obtained with capsule suede agent
Coal bed gas suede capsule drilling fluid, can be such that suede capsule is stable in the presence of in system, prevent the unstable situations such as suede bag pressure well liquid system layering
Occur, while playing the role of adjusting suede bag pressure well liquid flow pattern, and nontoxic, safety and environmental protection.Therefore, natural gas of the invention
Well suede bag pressure well liquid has substantive distinguishing features outstanding and significant progress with capsule suede agent.
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, is specially set for suede capsule Killing Fluid System feature
Meter is mainly used for forming the film layer of package gas courage outside suede capsule gas courage, preliminarily forms suede capsule structure.The present invention the capsule suede agent with
Capsule suede agent in the prior art or other inorganic agents with similar effect are compared, and suede capsule matter thickness can not only be effectively increased,
Gas courage and surface tension continuously can also be effectively reduced, while forming the glutinous layer of height of package gas courage outside gas courage, it can
It effectively prevent gas in gas courage to escape, gas courage is kept to stablize, improve suede capsule intensity.Also, the capsule suede agent of the present invention is suitable for
Natural gas well workover treatment, and the capsule suede agent is nontoxic, harmless, it is safe to use, it is subjected to type inorganic agent for environment.
Specific implementation mode
Not therefore below by the specific embodiment specific operation process that present invention be described in more detail, but the present invention
And it is any way limited.
Embodiment 1
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, by oil level sodium carboxymethylcellulose, high molecular weight
Polyacrylamide (molecular weight is more than or equal to 10,000,000), crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, institute
The parts by weight for stating oil level sodium carboxymethylcellulose are 4-6, and the parts by weight of the polyacrylamide of high molecular weight are 3-4, crosslinking
The parts by weight of polyvinylpyrrolidone are 1-2, and the parts by weight of industrial potassium chloride are 1-2.
Embodiment 2
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, by oil level sodium carboxymethylcellulose, high molecular weight
Polyacrylamide (molecular weight is more than or equal to 10,000,000), crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, institute
The parts by weight for stating oil level sodium carboxymethylcellulose are 4.2-5.8, and the parts by weight of the polyacrylamide of high molecular weight are 3.1-
3.9, the parts by weight of crosslinked polyvinylpyrrolidone are 1.1-1.9, and the parts by weight of industrial potassium chloride are 1.1-1.9.
Embodiment 3
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, by oil level sodium carboxymethylcellulose, high molecular weight
Polyacrylamide (molecular weight is more than or equal to 10,000,000), crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, institute
The parts by weight for stating oil level sodium carboxymethylcellulose are 4.4-5.6, and the parts by weight of the polyacrylamide of high molecular weight are 3.2-
3.8, the parts by weight of crosslinked polyvinylpyrrolidone are 1.2-1.8, and the parts by weight of industrial potassium chloride are 1.2-1.8.
Embodiment 4
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, by oil level sodium carboxymethylcellulose, high molecular weight
Polyacrylamide (molecular weight is more than or equal to 10,000,000), crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, institute
The parts by weight for stating oil level sodium carboxymethylcellulose are 4.6-5.4, and the parts by weight of the polyacrylamide of high molecular weight are 3.3-
3.7 the parts by weight of crosslinked polyvinylpyrrolidone are 1.3-1.7, the parts by weight of industrial potassium chloride are 1.3-1.7.
Embodiment 5
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, by oil level sodium carboxymethylcellulose, high molecular weight
Polyacrylamide (molecular weight is more than or equal to 10,000,000), crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, institute
The parts by weight for stating oil level sodium carboxymethylcellulose are 4.8-5.2, and the parts by weight of the polyacrylamide of high molecular weight are 3.4-
3.6, the parts by weight of crosslinked polyvinylpyrrolidone are 1.4-1.6, and the parts by weight of industrial potassium chloride are 1.4-1.6.
Embodiment 6
The natural gas well suede bag pressure well liquid capsule suede agent of the present invention, by oil level sodium carboxymethylcellulose, high molecular weight
Polyacrylamide (molecular weight is more than or equal to 10,000,000), crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride are constituted, institute
The parts by weight for stating oil level sodium carboxymethylcellulose are 5, and the parts by weight of the polyacrylamide of high molecular weight are 3.5, are crosslinked poly- second
The parts by weight of alkene pyrrolidone are 1.5, and the parts by weight of industrial potassium chloride are 1.5.
Above-mentioned oil level sodium carboxymethylcellulose, high molecular weight polyacrylamide (molecular weight be more than or equal to 10,000,000),
Crosslinked polyvinylpyrrolidone and industrial potassium chloride are commercially available, and general industrial products can be selected.
The present invention natural gas well suede bag pressure well liquid with the agent of capsule suede in preparing natural gas well suede bag pressure well liquid, with every hectogram
Water meter, the dosage of the suede capsule working solution capsule courage agent is 1.8~3.0 grams, i.e., 1.8~3.0g is added in the water of every hectogram
Capsule courage agent, obtained solution ph be 8~10,25~45mPas of apparent viscosity, base fluid (in suede bag pressure well liquid remove capsule
The solution that other components outside suede agent are formed) in capsule suede agent is added after, half-life period increase >=130min.
Construction embodiment 1
Test base fluid formula:Fresh water 400g, sodium carbonate 0.40g, suede capsule capsule matter agent 12.00g are (by carboxymethyl starch, hydroxyl second
Base starch, hydroxypropul starch are with mass ratio 5:1:1 prepare), the present invention natural gas well suede bag pressure well liquid capsule suede agent 4.00g,
Wherein, sodium carboxymethylcellulose molecular weight is between meeting grade oil standard 200,000~500,000), capsule courage agent 2.00g is (by dodecane
Three kinds of base benzene sulfonic acid sodium salt, lauroyl isopropanolamine, polyethylene glycol 200 substances are with quality parts ratio 2:6:2 are simply mixed composition).
The quality proportioning of each component is water:Sodium carbonate:Suede capsule capsule suede agent:Suede capsule capsule matter agent:Suede capsule capsule courage agent is 100:0.1:1.0:
3.0:0.5.
According to above-mentioned formula, under agitation, sodium carbonate, the agent of suede capsule capsule matter, suede capsule capsule suede are sequentially added into fresh water
Agent is configured to test base fluid.Suede capsule capsule courage agent is added in base fluid again, is configured to suede bag pressure well liquid test job fluid.Entirely
Process for preparation mixing speed can be controlled in 5000rpm or so.
Construction embodiment 2
Test base fluid formula:Fresh water 400g, sodium carbonate 0.40g, suede capsule capsule matter agent 12.00g are (by carboxymethyl starch, hydroxyl second
Base starch, hydroxypropul starch are with mass ratio 5:1:1 prepare), the present invention natural gas well suede bag pressure well liquid capsule suede agent 4.00g,
Wherein, sodium carboxymethylcellulose molecular weight is between meeting grade oil standard 200,000~500,000), capsule courage agent 2.00g is (by dodecane
Three kinds of base benzene sulfonic acid sodium salt, lauroyl isopropanolamine, polyethylene glycol 200 substances are with quality parts ratio 2:6:2 are simply mixed composition).
The quality proportioning of each component is water:Sodium carbonate:Suede capsule capsule suede agent:Suede capsule capsule matter agent:Suede capsule capsule courage agent is 100:0.1:1.0:
3.0:0.5.
According to above-mentioned formula, under agitation, sodium carbonate, the agent of suede capsule capsule matter, suede capsule capsule suede are sequentially added into fresh water
Agent is configured to test base fluid.Suede capsule capsule courage agent is added in base fluid again, is configured to suede bag pressure well liquid test job fluid.Entirely
Process for preparation mixing speed can be controlled in 5000rpm or so.
Construction embodiment 3
Test base fluid formula:Fresh water 400g, sodium carbonate 0.40g, suede capsule capsule matter agent 12.00g are (by carboxymethyl starch, hydroxyl second
Base starch, hydroxypropul starch are with mass ratio 5:1:1 prepare), the present invention natural gas well suede bag pressure well liquid capsule suede agent 4.00g,
Wherein, sodium carboxymethylcellulose molecular weight is between meeting grade oil standard 200,000~500,000), capsule courage agent 2.00g is (by dodecane
Three kinds of base benzene sulfonic acid sodium salt, lauroyl isopropanolamine, polyethylene glycol 200 substances are with quality parts ratio 2:6:2 are simply mixed composition).
The quality proportioning of each component is water:Sodium carbonate:Suede capsule capsule suede agent:Suede capsule capsule matter agent:Suede capsule capsule courage agent is 100:0.1:1.0:
3.0:0.5..
According to above-mentioned formula, under agitation, sodium carbonate, the agent of suede capsule capsule matter, suede capsule capsule suede are sequentially added into fresh water
Agent is configured to test base fluid.Suede capsule capsule courage agent is added in base fluid again, is configured to suede bag pressure well liquid test job fluid.Entirely
Process for preparation mixing speed can be controlled in 5000rpm or so.
1#, 2# and 3# natural gas well of embodiment 1,2 and 3 are tested with the performance of suede bag pressure well liquid capsule suede agent:
PH value
2.0g samples are weighed, are put into volume 300mL beakers, distilled water 200mL, stirring 30min is added to be used to abundant dissolving
Cleaned glass stick drips solution on pH test paper, and reference standard color range is read.
2 determinations of moisture
2.1 weigh 5.00g samples (being accurate to 0.01g), are placed in the measuring cup of weighed quality, in drying box in
(105 ± 3) DEG C drying 2h, is placed in drier and is cooled to room temperature, weigh (being accurate to 0.01g).
2.2 moistures are calculated by formula (I):
In formula:m1For sample mass, g;(m1-m2) it is sample mass after drying, g.
3 apparent viscosities
3.1 instrument
Using Qingdao with spring oil Instrument Ltd. ZNN-D6 type rotational viscometer, which be with motor
The rotary-type instrument of power.Working solution is in the annular space between two concentric drums.Outer barrel (or rotating cylinder) is with constant speed (rpm)
Rotation.Rotation of the rotating cylinder in working solution to inner cylinder (or suspending hammer) generate torque, torque spring prevent inner cylinder rotation, and with
The displacement of the connected dial plate instruction suspending hammer of suspending hammer.
3.2 mensuration program
Pay attention to:Instrument maximum operating temperature is 93 DEG C.It such as wants measuring temperature to be higher than 93 DEG C of working solution, should use solid
Metal inner cylinder or the internal hollow metal inner cylinder being completely dried.Because when being immersed in hot operation liquid, inside hollow inner cylinder
Liquid may evaporate and cause the rupture of inner cylinder.
3.2.1 the temperature for measuring and recording working solution, by DEG C as unit of indicate.
3.2.2 it measures 400mL distilled water using clean graduated cylinder to be transferred in clean stirring cup, 4g capsules is added in distilled water
Suede agent, homogenizer 5000rpm stir 20min.
3.2.3 the sample stirred evenly is injected into container, and rotating cylinder is made just to immerse to graduation mark.
3.2.4 instrument is opened, rotating speed is adjusted at 600rpm grades, after dial plate readings is constant, reads simultaneously recording meter panel readings.
3.2.5 calculating
Apparent viscosity is calculated by formula (III):
In formula:AV is plastic viscosity, mPas;θ600For 600rpm when constant readings, dimensionless.
4 suede capsule stabilization times
Capsule suede agent is added herein, measures suede bag pressure well liquid base fluid stabilization time more than 72h, according to contrast experiment's early period, list
Solely addition xanthans measures suede bag pressure well liquid base fluid stabilization time less than for 24 hours.
4.1, which measure prepared 1#, 2#, 3# suede bag pressure well liquid, tests base fluid, measures density.
4.2 suede bag pressure well liquid Stability Determinations.Stand test base fluid for 24 hours, observation suede capsule tests base fluid stability, and measures
Its density.Variable density ± 0.05g/cm3It can be considered stable.
It is tested by the performance of the natural gas well suede bag pressure well liquid capsule suede agent of 1~4 pair of the present embodiment of the above testing procedure,
Acquired results are referring to table 1:
1 suede bag pressure well liquid capsule suede agent performance test table of table
| Sample serial number | PH value | Moisture | Apparent viscosity | Stabilization time |
| 1# | 6.5 | 1.3% | 18 | 38h |
| 2# | 6.6 | 1.2% | 19 | 41h |
| 3# | 6.5 | 1.4% | 20 | 37h |
The properties that can be seen that the natural gas well suede bag pressure well liquid capsule suede agent of the present embodiment from the above experimental result refer to
Mark reaches design requirement.
The research for stablizing bubbling ability about suede bag pressure well liquid inorganic agent in the art belongs to the starting stage, there is no logical
With requiring.Five performances in table 1, table 2 strictly limit the quality baseline of capsule suede agent of the present invention.Pass through apparent viscosity and suede capsule
Two performance indicators of stabilization time, it is sufficient to show that the capsule suede agent of the present invention has good stable suede capsule ability.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (6)
1. the capsule suede agent of natural gas well suede bag pressure well liquid, it is characterized in that:The natural gas well suede bag pressure well liquid is with capsule suede agent by stone
Oily level sodium carboxymethylcellulose, the polyacrylamide of high molecular weight, crosslinked polyvinylpyrrolidone and the mixing of industrial potassium chloride
It constitutes, the parts by weight of the oil level sodium carboxymethylcellulose are 4-6, and the parts by weight of the polyacrylamide of high molecular weight are 3-
4, the parts by weight of crosslinked polyvinylpyrrolidone are 1-2, and the parts by weight of industrial potassium chloride are 1-2.
2. natural gas well suede bag pressure well liquid according to claim 1 capsule suede agent, it is characterized in that:The grade oil carboxymethyl
The parts by weight of sodium cellulosate are 4.2-5.8, and the parts by weight of the polyacrylamide of high molecular weight are 3.1-3.9, crosslinked polyethylene
The parts by weight of pyrrolidones are 1.1-1.9, and the parts by weight of industrial potassium chloride are 1.1-1.9.
3. natural gas well suede bag pressure well liquid according to claim 2 capsule suede agent, it is characterized in that:The grade oil carboxymethyl
The parts by weight of sodium cellulosate are 4.4-5.6, and the parts by weight of the polyacrylamide of high molecular weight are 3.2-3.8, crosslinked polyethylene
The parts by weight of pyrrolidones are 1.2-1.8, and the parts by weight of industrial potassium chloride are 1.2-1.8.
4. natural gas well suede bag pressure well liquid according to claim 3 capsule suede agent, it is characterized in that:The grade oil carboxymethyl
The parts by weight of sodium cellulosate are 4.6-5.4, and the parts by weight of the polyacrylamide of high molecular weight are 3.3-3.7, crosslinked polyethylene
The parts by weight of pyrrolidones are 1.3-1.7, and the parts by weight of industrial potassium chloride are 1.3-1.7.
5. natural gas well suede bag pressure well liquid according to claim 4 capsule suede agent, it is characterized in that:The grade oil carboxymethyl
The parts by weight of sodium cellulosate are 4.8-5.2, and the parts by weight of the polyacrylamide of high molecular weight are 3.4-3.6, crosslinked polyethylene
The parts by weight of pyrrolidones are 1.4-1.6, and the parts by weight of industrial potassium chloride are 1.4-1.6.
6. natural gas well suede bag pressure well liquid according to claim 5 capsule suede agent, it is characterized in that:The grade oil carboxymethyl
The parts by weight of sodium cellulosate are 5, and the parts by weight of the polyacrylamide of high molecular weight are 3.5, the weight of crosslinked polyvinylpyrrolidone
It is 1.5 to measure part, and the parts by weight of industrial potassium chloride are 1.5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111534292A (en) * | 2020-05-29 | 2020-08-14 | 四川格瑞迪斯石油技术有限公司 | Semi-interpenetrating network gel plugging material for oil and gas fields and preparation method thereof |
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