CN108559089A - A kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker - Google Patents
A kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker Download PDFInfo
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- CN108559089A CN108559089A CN201810349382.7A CN201810349382A CN108559089A CN 108559089 A CN108559089 A CN 108559089A CN 201810349382 A CN201810349382 A CN 201810349382A CN 108559089 A CN108559089 A CN 108559089A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
- C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/26—Gel breakers other than bacteria or enzymes
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker; first acrylic acid AA is uniformly mixed with MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride DMC and distilled water; ammonium persulfate is added dropwise under nitrogen protection; it is uniformly mixed; it is warming up to 50 DEG C; 2~3h of isothermal reaction obtains copolymer A A DMC；Then starch, the concentrated sulfuric acid is added to copolymer A A DMC, carries out graft copolymerization in 95 DEG C of isothermal reaction 4h under stiring, product obtains waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker after dried, crushed after reaction；Gel breaker prepared by the present invention can degrade certainly, environmental-friendly, while destroying the colloidal stability of drilling fluid, not influence the secondary performance with liquid to the maximum extent.
Description
Technical field
The present invention relates to oil gas field liquid waste disposal technique fields, and in particular to a kind of waste liquid of drilling is separated by solid-liquid separation with degradable
The preparation method of macromolecule gel breaker.
Background technology
Drilling fluid is essential working solution in oil and gas development, and the large-scale development of oil gas field will generate largely
Rejected well drilling liquid, pollutant therein cause environment certain harm, handle rejected well drilling liquid, first have to destroy it
Stable colloidal suspension system is realized and is separated by solid-liquid separation, and achievees the purpose that wastes reduction and waste water reuse, therefore screen excellent
The efficient gel breaker for dissolving suitable waste liquid of drilling separation of solid and liquid is the premise of waste liquid of drilling processing.
Include both at home and abroad mainly inorganic salts and organic polymer two major classes with gel breaker for waste liquid of drilling separation of solid and liquid.
Most common gel breaker, including aluminium salt, calcium salt, molysite etc. when inorganic salts are current waste drilling fluids disposals, but use inorganic salts
Gel breaker increases the salt content in rejected well drilling liquid, and the water isolated cannot achieve recycling or qualified discharge, remaining solid
Object can not realize the reparation of soil, and the salinization of soil of soil is caused after earthing landfill.Though inorganic polymer gel breaker has relatively strong
Charge neutrality ability, larger molecular weight, stronger absorption property and stability appropriate, but broken glue performance and stability difference compared with
Difference.
It the exploitation of organic polymer gel breaker and applies and starts from the sixties in last century in China, major product is poly- at present
Acrylamide (PAM) series of products, in addition there are the products such as Sodium Polyacrylate, poly dimethyl ammonium chloride and a small amount of polyamine, with nothing
Machine gel breaker is compared, organic polymer gel breaker have dosage it is few, sinking speed is fast, be not easy coexisting ion in by water, pH value and
The features such as influence of temperature, sludge is easy to dehydration.But existing macromolecule gel breaker product quality is not high, and instant capacity is poor, single to make
Used time price is high.
The broken colloidality energy to gel breaker and the secondary requirement with liquid effect with environmental protection and scene, exploitation is a kind of novel to consolidate
Liquid separation be of great significance to drilling fluid liquid waste processing with degradable gel breaker and application value and gel breaker development
One basic trend.
Invention content
In order to overcome the disadvantages of the above prior art, it is separated by solid-liquid separation and uses the purpose of the present invention is to provide a kind of waste liquid of drilling
The gel breaker of the preparation method of degradable macromolecule gel breaker, preparation can degrade certainly, environmental-friendly, in the colloid for destroying drilling fluid
While stability, the secondary performance with liquid is not influenced to the maximum extent.
In order to achieve the above object, the technical solution that the present invention takes is：
A kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker, includes the following steps：
1) by the methylacryoyloxyethyl front three of the acrylic acid AA and 15~20 parts of mass fractions of 5~7 parts of mass fractions
The distilled water of DMC and 73-80 parts of mass fractions of ammonium chloride is uniformly mixed, and 0.6~0.8 part of mass parts is added dropwise under nitrogen protection
Several ammonium persulfates, is uniformly mixed, and is warming up to 50 DEG C, and 2~3h of isothermal reaction obtains copolymer A A-DMC；
2) starch of 15~20 parts of mass fractions, 0.2~0.3 is added to the copolymer A A-DMC of 80-85 parts of mass fractions
The concentrated sulfuric acid of part mass fraction carries out graft copolymerizations in 95 DEG C of isothermal reaction 4h under stiring, product drying, crushing after reaction
After obtain waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker.
Beneficial effects of the present invention are：The macromolecule gel breaker is a kind of organic polymer cationic polymer, due to containing
There is highdensity organic cation, the colloidal stability of drilling mud, while organic high score can be destroyed by reducing zeta potential
Minor structure has an absorption bridging again, the functions such as decoloration, is conducive to rejected well drilling liquid and condenses into big flocculate to have reached solid phase heavy
The purpose of drop.The waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker of preparation can degrade certainly, environmental-friendly, be free of metal
Ion can not influence the secondary performance with liquid to the maximum extent while destroying the colloidal stability of drilling fluid.
Specific implementation mode
The preparation method of the present invention is described in detail with reference to embodiment.
Embodiment 1, a kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker, including following step
Suddenly：
1) MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride (DMC) of the acrylic acid (AA) and 20g that weigh 5g respectively is added
Into 75mL distilled water, so that it is fully dissolved under stirring, the ammonium persulfate of 0.6g is added under nitrogen protection, is stirred
It is even, 50 DEG C are warming up to, isothermal reaction 2h obtains copolymer A A-DMC；
2) starch of 15g, the concentrated sulfuric acid of 0.25g are added into 80g copolymer As A-DMC, it is anti-in 95 DEG C of constant temperature under stiring
4h is answered to carry out graft copolymerization；Product just obtains waste liquid of drilling separation of solid and liquid degradable macromolecule after dried, crushed after reaction
Gel breaker.
Embodiment 2, a kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker, including following step
Suddenly：
1) MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride (DMC) of the acrylic acid (AA) and 18g that weigh 6g respectively is added
Into 76mL distilled water, so that it is fully dissolved under stirring, the ammonium persulfate of 0.7g is added under nitrogen protection, is stirred
It is even, 50 DEG C are warming up to, isothermal reaction 2h obtains copolymer A A-DMC；
2) starch of 18g, the concentrated sulfuric acid of 0.25g are added into 80g copolymer As A-DMC, it is anti-in 95 DEG C of constant temperature under stiring
4h is answered to carry out graft copolymerization；Product just obtains waste liquid of drilling separation of solid and liquid degradable macromolecule after dried, crushed after reaction
Gel breaker.
Embodiment 3, a kind of preparation method of waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker, including following step
Suddenly：
1) MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride (DMC) of the acrylic acid (AA) and 15g that weigh 7g respectively is added
Into 78mL distilled water, so that it is fully dissolved under stirring, the ammonium persulfate of 0.8g is added under nitrogen protection, is stirred
It is even, 50 DEG C are warming up to, isothermal reaction 3h obtains copolymer A A-DMC；
2) starch of 20g, the concentrated sulfuric acid of 0.3g are added into 80g copolymer As A-DMC, it is anti-in 95 DEG C of constant temperature under stiring
4h is answered to carry out graft copolymerization；Product just obtains waste liquid of drilling separation of solid and liquid degradable macromolecule after dried, crushed after reaction
Gel breaker.
The waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker effect assessment that embodiment 1-3 is obtained：
The embodiment 1-3 gel breakers synthesized are configured to 10% solution, then enchashment field Discarded Drilling Materials waste liquid 100mL,
It is separately added into three kinds of gel breaker 10mL under stirring, the pH value of supernatant, COD, coloration and goes out after measurement processing after static 10min
Water rate, experimental result are shown in Table 1：
1 gel breaker of table handles rejected well drilling liquid experiment effect
Experiment shows that degradable macromolecule gel breaker prepared by the present invention has good broken colloidality energy, can be to scene
Waste liquid of drilling plays completely broken glue effect, and treated drilling fluid COD value and coloration significantly reduce, and water rate reaches 70%
Left and right.
Claims (4)
1. a kind of waste liquid of drilling is separated by solid-liquid separation the preparation method with degradable macromolecule gel breaker, which is characterized in that including following
Step：
1) by the methylacryoyloxyethyl trimethyl chlorine of the acrylic acid AA and 15~20 parts of mass fractions of 5~7 parts of mass fractions
The distilled water for changing DMC and 73-80 part mass fractions of ammonium is uniformly mixed, under nitrogen protection dropwise addition 0.6~0.8 part of mass fraction
Ammonium persulfate is uniformly mixed, and is warming up to 50 DEG C, and 2~3h of isothermal reaction obtains copolymer A A-DMC；
2) starch of 15~20 parts of mass fractions, 0.2~0.3 part of matter is added to the copolymer A A-DMC of 80-85 parts of mass fractions
The concentrated sulfuric acid of number is measured, carries out graft copolymerization in 95 DEG C of isothermal reaction 4h under stiring, product obtains after dried, crushed after reaction
To waste liquid of drilling separation of solid and liquid degradable macromolecule gel breaker.
2. a kind of waste liquid of drilling according to claim 1 is separated by solid-liquid separation the preparation method with degradable macromolecule gel breaker,
It is characterized by comprising the following steps：
1) the MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride DMC for weighing the acrylic acid AA and 20g of 5g respectively is added to 75mL steamings
In distilled water, so that it is fully dissolved under stirring, the ammonium persulfate of 0.6g is added under nitrogen protection, is uniformly mixed, is warming up to
50 DEG C, isothermal reaction 2h obtains copolymer A A-DMC；
2) starch of 15g, the concentrated sulfuric acid of 0.25g are added into 80g copolymer As A-DMC, under stiring in 95 DEG C of isothermal reaction 4h
Carry out graft copolymerization；Product just obtains waste liquid of drilling separation of solid and liquid and breaks glue with degradable macromolecule after dried, crushed after reaction
Agent.
3. a kind of waste liquid of drilling according to claim 1 is separated by solid-liquid separation the preparation method with degradable macromolecule gel breaker,
It is characterized by comprising the following steps：
1) the MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride DMC for weighing the acrylic acid AA and 18g of 6g respectively is added to 76mL steamings
In distilled water, so that it is fully dissolved under stirring, the ammonium persulfate of 0.7g is added under nitrogen protection, is uniformly mixed, is warming up to
50 DEG C, isothermal reaction 2h obtains copolymer A A-DMC；
2) starch of 18g, the concentrated sulfuric acid of 0.25g are added into 80g copolymer As A-DMC, under stiring in 95 DEG C of isothermal reaction 4h
Carry out graft copolymerization；Product just obtains waste liquid of drilling separation of solid and liquid and breaks glue with degradable macromolecule after dried, crushed after reaction
Agent.
4. a kind of waste liquid of drilling according to claim 1 is separated by solid-liquid separation the preparation method with degradable macromolecule gel breaker,
It is characterized by comprising the following steps：
1) the MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride DMC for weighing the acrylic acid AA and 15g of 7g respectively is added to 78mL steamings
In distilled water, so that it is fully dissolved under stirring, the ammonium persulfate of 0.8g is added under nitrogen protection, is uniformly mixed, is warming up to
50 DEG C, isothermal reaction 3h obtains copolymer A A-DMC；
2) starch of 20g, the concentrated sulfuric acid of 0.3g are added into 80g copolymer As A-DMC, under stiring in 95 DEG C of isothermal reaction 4h
Carry out graft copolymerization；Product just obtains waste liquid of drilling separation of solid and liquid and breaks glue with degradable macromolecule after dried, crushed after reaction
Agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109956648A (en) * | 2019-04-26 | 2019-07-02 | 西安石油大学 | A method of the waste drilling mud coupled is aggravated with dirt absorption based on Fenton oxidation unstability and is dehydrated |
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| CN109956648B (en) * | 2019-04-26 | 2021-10-22 | 西安石油大学 | Method for dewatering waste drilling mud based on Fenton oxidation instability and scale adsorption weighting coupling |
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Application publication date: 20180921 |
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