CN106753316B - A kind of multi-functional clay stabilizer - Google Patents
A kind of multi-functional clay stabilizer Download PDFInfo
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- CN106753316B CN106753316B CN201710067555.1A CN201710067555A CN106753316B CN 106753316 B CN106753316 B CN 106753316B CN 201710067555 A CN201710067555 A CN 201710067555A CN 106753316 B CN106753316 B CN 106753316B
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- 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
- C09K8/607—Compositions for stimulating production by acting on the underground formation specially adapted for clay formations
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
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- C09K8/62—Compositions for forming crevices or fractures
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- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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Abstract
The present invention provides a kind of multi-functional clay stabilizers, are prepared by following steps: one, being 7~9 in pH value by allyl chloride and dimethylamine agueous solution, temperature is stirred to react 3h~4h under conditions of being 40~50 DEG C, obtains mixed liquor A；Two, AMPS aqueous solution is added into mixed liquor A, after initiator is added dropwise, is reacted under conditions of 75 DEG C~80 DEG C of temperature, obtains solution B after being diluted with water；Three, coagent, isopropyl alcohol and water are uniformly mixed, obtain solution C；Four, solution B and solution C are uniformly mixed according to mass ratio 1: 1, obtain multi-functional clay stabilizer.Clay stabilizer of the present invention not only has outside efficient antiexpanding action, while having the effect of cleanup additive concurrently, converts performance from " single type " (anti-clayswelling) to " multi-functional and high efficiency " (preventing the swollen and row of helping).
Description
Technical field
The invention belongs to technical field of petrochemical industry, and in particular to a kind of multi-functional clay stabilizer.
Background technique
The purpose for having crept into well essentially consists in exploitation oil-gas Layer, forms oil and gas flow channel, establishes the good production of oil gas
Condition.Any additive factor for hindering oil gas to flow into producing well bottom is referred to as the pollution or injury of oil-gas Layer.Drilling completion with
And during each of other well stimulations, it is likely to damage oil and gas reservoir, to substantially reduce oil-gas mining effect
Rate.
The clay mineral contained in oil-gas reservoir mainly has kaolinite, montmorillonite, illite and chlorite etc..These clay pits
Object encounters secondary water or water-based material in drilling well, water filling, acidification and fracturing process will generate expansion, then further divide
Fine particle that is scattered or being directly dispersed into 10 μm of diameter, blocks oil and gas flow channel, reduces the permeability on stratum, influence oil/gas well
Development effectiveness.
In order to protect the permeability of oil and gas reservoir, when carrying out well stimulation, clay is added in the working solution used
Stabilizer, to prevent the dispersion of swelling clay mineral and particle from migrating.With the exploitation in oil field, the application of clay stabilizer is more next
More extensive, type is more and more.According to different structure and used chemical agent molecules amount size, clay stabilizer is divided into
The compound type of inorganic matter type, small organic molecule, macromolecular organic polymer and inorganic matter and organic matter, these substances,
Mainly based on cationic chemical substance, effect is to prevent clay swell, protects reservoir.In conventional pressure break and acidified
Cheng Zhong, other than adding anti-clayswelling agent, it is also necessary to the auxiliary agents such as cleanup additive and demulsifier be added.At the scene before use, generally wanting
Compatibility between different chemical agents is tested, then according to a certain percentage, clay stabilizer and cleanup additive etc. are added respectively
Enter in working solution.Many experiments show: the chemical assistant performance that fracture acidizing uses is single, not only increases scene with liquid work
Sequence reduces construction efficiency, and increases construction cost.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of multi-functional clay
Stabilizer.The clay stabilizer not only has outside efficient antiexpanding action, also has the effect of cleanup additive concurrently, makes performance by " single
Type " (anti-clayswelling) is converted to " multi-functional and high efficiency " (preventing the swollen and row of helping).
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of multi-functional clay stabilizer, feature
It is, which is prepared by following steps:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 40 DEG C~50 DEG C, and it is cold not higher than 5 DEG C to be passed through into reflux condensing tube temperature
Solidifying water, backward reaction flask in allyl chloride and dimethylamine agueous solution is added, KOH aqueous solution is added dropwise after mixing evenly so that anti-
It answers the pH value of system to maintain 7~9, obtains mixed liquor A after being stirred to react 3h~4h；The allyl chloride and dimethylamine agueous solution
Mass ratio be 1: 0.7, the time for adding of the KOH aqueous solution is not more than 10min；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 75 DEG C~80 DEG C, to mixed
It closes and initiator is added dropwise in liquid A, the time for adding of initiator is 2h~3h, and initiator continues to stir 30min after being added dropwise, later
Add water to be configured to the aqueous solutions of polymers that mass concentration is 50%, obtains solution B；The additional amount of the initiator is the total matter of monomer
The 0.5%~0.8% of amount, the monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent and assistant concentration are OP-10 40wt% or SDSA 10wt% and FC-002
2wt% CAB-35 20wt% and FC-002 2wt% or AEO-3 10wt% and FC-002 2wt%, or
It is CTAB 20wt% and FC-002 2wt% or OP-10 10wt% and FC-002 2wt%；The assistant concentration refers to
Concentration of the coagent in solution C；OP-10, SDSA, FC-002, CAB-35 and AEO-3 are existing commercially available surface-active
Agent.
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
A kind of above-mentioned multi-functional clay stabilizer, which is characterized in that the quality purity of allyl chloride described in step 1
Not less than 94%.
A kind of above-mentioned multi-functional clay stabilizer, which is characterized in that the quality of dimethylamine agueous solution described in step 1
Concentration is 40%.
A kind of above-mentioned multi-functional clay stabilizer, which is characterized in that the mass concentration of KOH aqueous solution described in step 1
It is 25%~30%.
Above-mentioned a kind of multi-functional clay stabilizer, which is characterized in that the quality of AMPS aqueous solution described in step 1 is dense
Degree is 50%.
Above-mentioned a kind of multi-functional clay stabilizer, which is characterized in that initiator described in step 2 is ammonium persulfate.
Compared with the prior art, the present invention has the following advantages:
1, it is viscous to develop one multi-purpose i.e. Mobyneb for the first time at home for the characteristics of working when present invention foundation acid fracturing
Soil stabilizer not only has outside efficient antiexpanding action, also has the effect of cleanup additive concurrently, makes the performance of clay stabilizer by " single
One type " (anti-clayswelling) is converted to " multi-functional and high efficiency " (preventing the swollen and row of helping).
2, the preparation method of clay stabilizer of the present invention is simple, which simplifies with liquid process, and it is strong to reduce labour
Degree, improves with liquid accuracy, while reducing the waste of auxiliary agent, and reduction working solution preparation cost is low etc..
Below with reference to embodiment, invention is further described in detail.
Specific embodiment
Embodiment 1
The present embodiment has developed a kind of pressure break clay stabilizer of Mobyneb, which passes through following steps
It is prepared:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 45 DEG C, and condensation water of the temperature not higher than 5 DEG C is passed through into reflux condensing tube,
Backward reaction flask in be added quality purity not less than 94% allyl chloride and concentration be 40wt% dimethylamine agueous solution, stir
It is the KOH aqueous solution of 30wt% so that the pH value of reaction system maintains the dropwise addition of 8, KOH aqueous solution that concentration is added dropwise after mixing uniformly
Time controls in 10min, and KOH aqueous solution is stirred to react 4h after being added dropwise, and obtains mixed liquor A；The allyl chloride and two
The mass ratio of methylamine water solution is 1: 0.7；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 80 DEG C, into mixed liquor A
Initiator is added dropwise, the time for adding of initiator is 2.5h, and initiator continues to stir 30min after being added dropwise, and later plus water is prepared
The aqueous solutions of polymers for being 50% at mass concentration, obtains solution B；The additional amount of the initiator is monomer gross mass
0.7%, the monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent is OP-10, and assistant concentration (i.e. concentration of the coagent in solution C) is
40wt%；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
The performance of Mobyneb clay stabilizer manufactured in the present embodiment at room temperature are as follows: 0.5% clay stabilizer
Anti-dilative are as follows: 88%, the surface tension of solution are as follows: 26.76m/Nm, interfacial tension are as follows: 1.53m/Nm.Above data can illustrate
The product not only has efficient antiexpanding action, and has the effect of cleanup additive concurrently, it is confirmed that more function manufactured in the present embodiment
The high comprehensive performance of energy type clay stabilizer.
Embodiment 2
The present embodiment has developed a kind of pressure break clay stabilizer of Mobyneb, which passes through following steps
It is prepared:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 43 DEG C, and condensation water of the temperature not higher than 5 DEG C is passed through into reflux condensing tube,
Backward reaction flask in be added quality purity not less than 94% allyl chloride and concentration be 40wt% dimethylamine agueous solution, stir
When the KOH aqueous solution that concentration is 25wt% is added dropwise after mixing uniformly makes the pH value of reaction system maintain the dropwise addition of 9, KOH aqueous solution
Between control in 10min, KOH aqueous solution is stirred to react 3h after being added dropwise, and obtains mixed liquor A；The allyl chloride and diformazan
The mass ratio of amine aqueous solution is 1: 0.7；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 78 DEG C, into mixed liquor A
Initiator is added dropwise, the time for adding of initiator is 2h, and initiator continues to stir 30min after being added dropwise, and later plus water is configured to
The aqueous solutions of polymers that mass concentration is 50%, obtains solution B；The additional amount of the initiator is the 0.6% of monomer gross mass,
The monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution B is obtained；Isopropanol in the solution B
Concentration be 40wt%, the coagent is SDSA and FC-002, and the assistant concentration of SDSA is 10wt%, the auxiliary agent of FC-002
Concentration is 2wt%；
Step 4: solution B described in solution A described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent is SDSA and FC-002, and the assistant concentration of SDSA is 10wt%, the auxiliary agent of FC-002
Concentration is 2wt%；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
The performance of Mobyneb clay stabilizer manufactured in the present embodiment at room temperature are as follows: 0.5% clay stabilizer
Anti-dilative are as follows: 88%, the surface tension of solution are as follows: 25.8m/Nm, interfacial tension are as follows: 1.38m/Nm.It is confirmed that this implementation
The high comprehensive performance of the Mobyneb clay stabilizer of example preparation.
Embodiment 3
The present embodiment has developed a kind of pressure break clay stabilizer of Mobyneb, which passes through following steps
It is prepared:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 47 DEG C, and condensation water of the temperature not higher than 5 DEG C is passed through into reflux condensing tube,
Backward reaction flask in be added quality purity not less than 94% allyl chloride and concentration be 40wt% dimethylamine agueous solution, stir
When the KOH aqueous solution that concentration is 30wt% is added dropwise after mixing uniformly makes the pH value of reaction system maintain the dropwise addition of 7, KOH aqueous solution
Between control in 10min, KOH aqueous solution is stirred to react 4h after being added dropwise, and obtains mixed liquor A；The allyl chloride and diformazan
The mass ratio of amine aqueous solution is 1: 0.7；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 80 DEG C, into mixed liquor A
Initiator is added dropwise, the time for adding of initiator is 2h, and initiator continues to stir 30min after being added dropwise, and later plus water is configured to
The aqueous solutions of polymers that mass concentration is 50%, obtains solution B；The additional amount of the initiator is the 0.5% of monomer gross mass,
The monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent is CAB-35 and FC-002, and the assistant concentration of CAB-35 is 20wt%, FC-002's
Assistant concentration is 2wt%；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
The performance of Mobyneb clay stabilizer manufactured in the present embodiment at room temperature are as follows: 0.5% clay stabilizer
Anti-dilative are as follows: 88%, the surface tension of solution are as follows: 28.02m/Nm, interfacial tension are as follows: 2.35m/Nm.It is confirmed that this implementation
The high comprehensive performance of the Mobyneb clay stabilizer of example preparation.
Embodiment 4
The present embodiment has developed a kind of pressure break clay stabilizer of Mobyneb, which passes through following steps
It is prepared:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 45 DEG C, and condensation water of the temperature not higher than 5 DEG C is passed through into reflux condensing tube,
Backward reaction flask in be added quality purity not less than 94% allyl chloride and concentration be 40wt% dimethylamine agueous solution, stir
It is the KOH aqueous solution of 30wt% so that the pH value of reaction system maintains the dropwise addition of 8, KOH aqueous solution that concentration is added dropwise after mixing uniformly
Time controls in 10min, and KOH aqueous solution is stirred to react 4h after being added dropwise, and obtains mixed liquor A；The allyl chloride and two
The mass ratio of methylamine water solution is 1: 0.7；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 75 DEG C, into mixed liquor A
Initiator is added dropwise, the time for adding of initiator is 3h, and initiator continues to stir 30min after being added dropwise, and later plus water is configured to
The aqueous solutions of polymers that mass concentration is 50%, obtains solution B；The additional amount of the initiator is the 0.8% of monomer gross mass,
The monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent is AEO-3 and FC-002, and the assistant concentration of AEO-3 is 10wt%, and FC-002's helps
Agent concentration is 2wt%；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
The performance of Mobyneb clay stabilizer manufactured in the present embodiment at room temperature are as follows: 0.5% clay stabilizer
Anti-dilative are as follows: 88%, the surface tension of solution are as follows: 27.08m/Nm, interfacial tension are as follows: 2.25m/Nm.Above data can illustrate
The product not only has efficient antiexpanding action, and has the effect of cleanup additive concurrently, it is confirmed that more function manufactured in the present embodiment
The high comprehensive performance of energy type clay stabilizer.
Embodiment 5
The present embodiment has developed a kind of pressure break clay stabilizer of Mobyneb, which passes through following steps
It is prepared:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 40 DEG C, and condensation water of the temperature not higher than 5 DEG C is passed through into reflux condensing tube,
Backward reaction flask in be added quality purity not less than 94% allyl chloride and concentration be 40wt% dimethylamine agueous solution, stir
When the KOH aqueous solution that concentration is 30wt% is added dropwise after mixing uniformly makes the pH value of reaction system maintain the dropwise addition of 9, KOH aqueous solution
Between control in 10min, KOH aqueous solution is stirred to react 3h after being added dropwise, and obtains mixed liquor A；The allyl chloride and diformazan
The mass ratio of amine aqueous solution is 1: 0.7；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 78 DEG C, into mixed liquor A
Initiator is added dropwise, the time for adding of initiator is 2.5h, and initiator continues to stir 30min after being added dropwise, and later plus water is prepared
The aqueous solutions of polymers for being 50% at mass concentration, obtains solution B；The additional amount of the initiator is monomer gross mass
0.6%, the monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent is CTAB and FC-002, and the assistant concentration of CTAB is 20wt%, the auxiliary agent of FC-002
Concentration is 2wt%；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
The performance of Mobyneb clay stabilizer manufactured in the present embodiment at room temperature are as follows: 0.5% clay stabilizer
Anti-dilative are as follows: 88%, the surface tension of solution are as follows: 26.80m/Nm, interfacial tension are as follows: 1.22m/Nm.It is confirmed that this implementation
The high comprehensive performance of the Mobyneb clay stabilizer of example preparation.
Embodiment 6
The present embodiment has developed a kind of pressure break clay stabilizer of Mobyneb, which passes through following steps
It is prepared:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will
The water being contained in constant temperature water bath is heated to 50 DEG C, and condensation water of the temperature not higher than 5 DEG C is passed through into reflux condensing tube,
Backward reaction flask in be added quality purity not less than 94% allyl chloride and concentration be 40wt% dimethylamine agueous solution, stir
When the KOH aqueous solution that concentration is 30wt% is added dropwise after mixing uniformly makes the pH value of reaction system maintain the dropwise addition of 7, KOH aqueous solution
Between control in 10min, KOH aqueous solution is stirred to react 4h after being added dropwise, and obtains mixed liquor A；The allyl chloride and diformazan
The mass ratio of amine aqueous solution is 1: 0.7；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 76 DEG C, into mixed liquor A
Initiator is added dropwise, the time for adding of initiator is 2.5h, and initiator continues to stir 30min after being added dropwise, and later plus water is prepared
The aqueous solutions of polymers for being 50% at mass concentration, obtains solution B；The additional amount of the initiator is monomer gross mass
0.7%, the monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol in the solution C
Concentration be 40wt%, the coagent is OP-10 and FC-002, and the assistant concentration of OP-10 is 10wt%, and FC-002's helps
Agent concentration is 2wt%；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, obtain
Multi-functional clay stabilizer.
The performance of Mobyneb clay stabilizer manufactured in the present embodiment at room temperature are as follows: 0.5% clay stabilizer
Anti-dilative are as follows: 88%, the surface tension of solution is low: 26.05m/Nm, interfacial tension are as follows: 0.58m/Nm.It is confirmed that this implementation
The high comprehensive performance of the Mobyneb clay stabilizer of example preparation.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way.It is all according to invention skill
Art any simple modification, change and equivalence change substantially to the above embodiments, still fall within technical solution of the present invention
Protection scope in.
Claims (5)
1. a kind of multi-functional clay stabilizer, which is characterized in that the stabilizer is prepared by following steps:
Step 1: the reaction flask equipped with blender, reflux condensing tube and thermometer is placed in constant temperature water bath, then will contain
Water in constant temperature water bath is heated to 40 DEG C~50 DEG C, and is passed through condensation of the temperature not higher than 5 DEG C into reflux condensing tube and uses
Water, backward reaction flask in allyl chloride and dimethylamine agueous solution is added, KOH aqueous solution is added dropwise after mixing evenly so that reactant
The pH value of system maintains 7~9, obtains mixed liquor A after being stirred to react 3h~4h；The matter of the allyl chloride and dimethylamine agueous solution
For amount than being 1: 0.7, the time for adding of the KOH aqueous solution is not more than 10min；
Step 2: AMPS aqueous solution is added into mixed liquor A described in step 1, after being warming up to 75 DEG C~80 DEG C, to mixed liquor A
Middle dropwise addition initiator, the time for adding of initiator are 2h~3h, and initiator continues to stir 30min after being added dropwise, later plus water
It is configured to the aqueous solutions of polymers that mass concentration is 50%, obtains solution B；The additional amount of the initiator is monomer gross mass
0.5%~0.8%, the monomer gross mass refers to the gross mass of allyl chloride, dimethylamine and AMPS；The AMPS aqueous solution
Additional amount is the 30% of allyl chloride quality；The mass concentration of the AMPS aqueous solution is 50%；
Step 3: coagent, isopropyl alcohol and water are uniformly mixed, solution C is obtained；Isopropanol is dense in the solution C
Degree is 40wt%, and the coagent and assistant concentration are OP-10 40wt% or SDSA 10wt% and FC-002
2wt% CAB-35 20wt% and FC-002 2wt% or AEO-3 10wt% and FC-002 2wt%, or
It is CTAB 20wt% and FC-002 2wt% or OP-10 10wt% and FC-002 2wt%；The assistant concentration refers to
Concentration of the coagent in solution C；
Step 4: solution C described in solution B described in step 2 and step 3 in mass ratio 1: 1 is uniformly mixed, more function are obtained
It can clay stabilizer.
2. a kind of multi-functional clay stabilizer according to claim 1, which is characterized in that allyl chloride described in step 1
Quality purity be not less than 94%.
3. a kind of multi-functional clay stabilizer according to claim 1, which is characterized in that diformazan aqueous amine described in step 1
The mass concentration of solution is 40%.
4. a kind of multi-functional clay stabilizer according to claim 1, which is characterized in that KOH described in step 1 is water-soluble
The mass concentration of liquid is 25%~30%.
5. a kind of multi-functional clay stabilizer according to claim 1, which is characterized in that initiator described in step 2 is
Ammonium persulfate.
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Citations (3)
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|---|---|---|---|---|
| CN103333672A (en) * | 2013-01-11 | 2013-10-02 | 中国石油天然气股份有限公司 | Salt-resistant resistance-reducing agent applied to shale gas reservoir |
| CN104098738A (en) * | 2013-04-08 | 2014-10-15 | 中国石油化工股份有限公司 | Preparation method of low molecular weight clay stabilizer |
| CN104418984A (en) * | 2013-09-04 | 2015-03-18 | 中国石油化工股份有限公司 | High-temperature resistant clay stabilizer and preparation method thereof |
-
2017
- 2017-02-07 CN CN201710067555.1A patent/CN106753316B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333672A (en) * | 2013-01-11 | 2013-10-02 | 中国石油天然气股份有限公司 | Salt-resistant resistance-reducing agent applied to shale gas reservoir |
| CN104098738A (en) * | 2013-04-08 | 2014-10-15 | 中国石油化工股份有限公司 | Preparation method of low molecular weight clay stabilizer |
| CN104418984A (en) * | 2013-09-04 | 2015-03-18 | 中国石油化工股份有限公司 | High-temperature resistant clay stabilizer and preparation method thereof |
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