CN107987182A - A kind of additive for drilling fluid and preparation method thereof and drilling fluid - Google Patents
A kind of additive for drilling fluid and preparation method thereof and drilling fluid Download PDFInfo
- Publication number
- CN107987182A CN107987182A CN201610949731.XA CN201610949731A CN107987182A CN 107987182 A CN107987182 A CN 107987182A CN 201610949731 A CN201610949731 A CN 201610949731A CN 107987182 A CN107987182 A CN 107987182A
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- additive
- present
- intermediate product
- alcohol compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2618—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen
- C08G65/2621—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2618—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen
- C08G65/2621—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups
- C08G65/263—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups containing heterocyclic amine groups
-
- 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
-
- 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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
- C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars
Abstract
The present invention provides a kind of additive for drilling fluid, including the structure shown in Formulas I；In Formulas I, a is that 1200~3100, q is that 1~10, p is that 2~10, m is that 1~16, n is that 1~5, o is that 0~4, M is alkali metal.The present invention provides a kind of preparation method of the additive for drilling fluid described in above-mentioned technical proposal, comprise the following steps：(1) chitosan, alkali compounds and alcohol compound are reacted, obtains the first intermediate product；(2) the first intermediate product and chlorinated carboxylic acid are reacted, obtains the second intermediate product；(3) the second intermediate product and chloro unary alcohol compound, dibastic alcohol compound and chloro alkyl epoxide are reacted, obtains the 3rd intermediate product；(4) the 3rd intermediate product and organic amine are reacted, obtains additive for drilling fluid.Additive for drilling fluid provided by the invention has good rejection, carries and cut performance and filtrate loss controllability.
Description
Technical field
The present invention relates to drilling technology field, more particularly to a kind of additive for drilling fluid and preparation method thereof and drilling fluid.
Background technology
Chitosan is the derivative generated after chitin deacetylate, is a kind of alkaline polysaccharide containing amido, nontoxic
Property, have good biocompatibility and biodegradable, has obtained the extensive concern of different field researcher.Study table
It is bright, containing substantial amounts of hydroxyl, amido isoreactivity group in chitosan molecule chain, the presence of these active groups make its be easy into
Row is derivative to be modified, and therefore, the Biofunctional materials prepared based on Chitosan-phospholipid complex are concerned by people.At present, shell
The study on the modification of glycan, which is concentrated mainly on, introduces hydrophilic radical into chitosan molecule to increase its dissolubility, in chitosan molecule
2 amidos and 6 be the chief active position that hydroxyl is chemical reaction, different group can be introduced as needed and obtain different performance
Chitosan derivatives.
The report that Chitosan-phospholipid complex is used for drilling fluid field is less, such as 2014100449237 patent of Application No.
A kind of chitose graft copolymer flocculation-fungicide is provided, this chitose graft copolymer flocculation-fungicide can be used for following
Sterilization processing in ring cooling water, papermaking wastewater, sanitary sewage, drilling fluid, can kill virus in water body, bacterium, algae
Floating material simultaneously gets off with the colloid in water body, suspended particulate flocking settling.The chitosan derivatives that the prior art provides mainly are used
In processing well-drilling waste water, and had not been reported applied to the chitosan derivatives in drilling fluid system.Chitosan derivatives are without life
It is thing toxicity, environmentally protective, there is obvious performance advantage.Therefore, be badly in need of currently on the market a kind of rejection, carry cut performance and
The good chitosan derivatives of filtrate loss controllability are with applied in drilling fluid.
The content of the invention
In view of this, it is an object of the invention to provide a kind of additive for drilling fluid and preparation method thereof and drilling fluid, sheet
The additive for drilling fluid that invention provides, which has preferable rejection, filtrate loss controllability and carries, cuts performance.
The present invention provides a kind of additive for drilling fluid, including the structure shown in Formulas I：
In Formulas I, a is that 1200~3100, q is that 1~10, p is that 2~10, m is that 1~16, n is that 1~5, o is that 0~4, M is alkali
Metallic element.
Preferably, the q is that 1~5, p is 2~5.
Preferably, the m is that 9~15, M is Na or K.
Compared with prior art, additive for drilling fluid provided by the invention is a kind of chitosan derivatives of specific structure,
This additive for drilling fluid has good rejection, carries and cut performance and filtrate loss controllability, suitable for the suppression to drilling fluid
Make it is anti-collapse, take the regional wellbore construction that rock zone sand and filtrate-loss control can be more demanding.
The present invention provides a kind of preparation method of the additive for drilling fluid described in above-mentioned technical proposal, including following step
Suddenly：
(1) chitosan, alkali compounds and alcohol compound are reacted, obtains the first intermediate product；The alkalescence
Compound is alkali carbonate or alkali metal hydroxide；
(2) the first intermediate product and chlorinated carboxylic acid are reacted, obtains the second intermediate product；The carbon of the chlorinated carboxylic acid
Atomicity is 2~11；
(3) the second intermediate product and chloro unary alcohol compound, dibastic alcohol compound and alkyl chloride basic ring are aoxidized
Thing is reacted, and obtains the 3rd intermediate product；The carbon number of the chloro unary alcohol compound is 2~11；The binary
The carbon number of alcohol compound is 2~17；The carbon number of the chloro alkyl epoxide is 3~12；
(4) the 3rd intermediate product and organic amine are reacted, obtains additive for drilling fluid；The carbon atom of the organic amine
Number is 2~12.
Preferably, the number-average molecular weight of the chitosan is 200000~500000.
Preferably, the carbon number of alcohol compound is 1~10 in the step (1).
Preferably, the dibastic alcohol compound in the step (3) is ethylene glycol or polyethylene glycol.
Preferably, the chitosan, alkali compounds, alcohol compound, chlorinated carboxylic acid, chloro unary alcohol compound,
The mass ratio of dibastic alcohol compound, chloro alkyl epoxide and organic amine is (16~20)：(20~40)：(40~60)：
(24~48)：(10~15)：(10~15)：(6~10)：(8~12).
Preferably, the reaction temperature in the step (1) is 50~80 DEG C；
Reaction temperature in the step (2) is 55~80 DEG C；
Reaction temperature in the step (3) is 95~150 DEG C；
Reaction temperature in the step (4) is 60~110 DEG C.
The present invention is modified chitosan using specific raw material, and the drilling fluid described in above-mentioned technical proposal is prepared
Inorganic agent, the additive for drilling fluid that method provided by the invention is prepared have preferable rejection, carry cut performance and
Filtrate loss controllability.In addition, the preparation method reaction condition of additive for drilling fluid provided by the invention is gentle, operating procedure is simple,
Sintetics is environmentally protective, and the yield of product is higher.
The present invention provides a kind of drilling fluid, including the additive for drilling fluid described in above-mentioned technical proposal.
It is this that there is specific knot containing the additive for drilling fluid described in above-mentioned technical proposal in drilling fluid provided by the invention
The chitosan derivatives additive for drilling fluid of structure can improve the rejection of drilling fluid, carry and cut performance and filtrate loss controllability.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 1 is prepared；
Fig. 2 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 2 is prepared；
Fig. 3 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 3 is prepared；
Fig. 4 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 4 is prepared；
Fig. 5 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 5 is prepared.
Embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is common
Technical staff it is improved or retouching all other example, belong to the scope of protection of the invention.
The present invention provides a kind of additive for drilling fluid, including the structure shown in Formulas I：
In Formulas I, a is that 1200~3100, q is that 1~10, p is that 2~10, m is that 1~16, n is that 1~5, o is that 0~4, M is alkali
Metallic element.
In the present invention, a is preferably 1500~3000, more preferably 1800~2500, most preferably 2000~
2200.In the present invention, the q is preferably 1~5, and more preferably 1~3.In the present invention, the p is preferably 2~5, more excellent
Elect 3~4 as.In the present invention, the m is preferably 9~15, and more preferably 10~13, it is most preferably 12.In the present invention, institute
It is preferably 1~4 to state n, and more preferably 2~3.In the present invention, the o is preferably 0,1,2,3 or 4.In the present invention, the M
Preferably Na or K.
In the present invention, the number-average molecular weight of the additive for drilling fluid is preferably 600000~4000000, more preferably
1000000~3500000, more preferably 1500000~3000000, are most preferably 2000000~2500000.
The present invention provides a kind of preparation method of the additive for drilling fluid described in above-mentioned technical proposal, including following step
Suddenly：
(1) chitosan, alkali compounds and alcohol compound are reacted, obtains the first intermediate product；The alkalescence
Compound is alkali carbonate or alkali metal hydroxide；
(2) the first intermediate product and chlorinated carboxylic acid are reacted, obtains the second intermediate product；The carbon of the chlorinated carboxylic acid
Atomicity is 2~11；
(3) the second intermediate product and chloro unary alcohol compound, dibastic alcohol compound and alkyl chloride basic ring are aoxidized
Thing is reacted, and obtains the 3rd intermediate product；The carbon number of the chloro unary alcohol compound is 2~11；The binary
The carbon number of alcohol compound is 2~17；The carbon number of the chloro alkyl epoxide is 3~12；
(4) the 3rd intermediate product and organic amine are reacted, obtains additive for drilling fluid；The carbon atom of the organic amine
Number is 2~8.
In the present invention, the chitosan has the structure shown in formula A：
In the present invention, a in the formula A is consistent with a value ranges described in above-mentioned technical proposal, no longer superfluous herein
State.The present invention does not have special limitation to the source of the chitosan, using chitosan well known to those skilled in the art,
It can be bought and obtained by market.In the present invention, the number-average molecular weight of the chitosan is preferably 200000~500000, more preferably
It is most preferably 350000 for 250000~450000, more preferably 300000~400000.
In the present invention, the alkali carbonate is preferably sodium hydroxide, sodium carbonate, potassium hydroxide or potassium carbonate.
In the present invention, the carbon number of the alcohol compound is preferably 1~10, and more preferably 1~5.In the present invention
In, the alcohol compound is preferably methanol, ethanol, propyl alcohol, butanol or isopropanol.
In the present invention, the temperature of reaction is preferably 50~80 DEG C in the step (1), more preferably 55~75 DEG C, more
Preferably 60~70 DEG C, be most preferably 65 DEG C.In the present invention, the time of reaction is preferably 0.5~2 small in the step (1)
When, more preferably 1~1.5 it is small when.In the present invention, the reaction in the step (1) preferably carries out in a solvent, the solvent
Preferably water.In the present invention, the mass ratio of the chitosan and water is preferably (16~20)：(150~200), more preferably
(17~19)：(160~190), are most preferably 18：(170~180).
In the present invention, the carbon number of the chlorinated carboxylic acid is preferably 2~8, and more preferably 2~5.In the present invention,
The chlorinated carboxylic acid is preferably Cl- [CH2]qThe value range of q described in the value range and above-mentioned technical proposal of-COOH, the q
Unanimously, details are not described herein.In the present invention, the chlorinated carboxylic acid is preferably chloracetic acid, chloropropionic acid or chloro butyric acid.
In the present invention, the temperature of reaction is preferably 55~80 DEG C in the step (2), more preferably 60~75 DEG C, most
Preferably 65~70 DEG C.In the present invention, when the reaction time in the step (2) is preferably 2~4 small, more preferably 2.5~
3.5 it is small when, be most preferably 4 it is small when.
In the present invention, the carbon number of the chloro unary alcohol compound is preferably 2~8, and more preferably 2~6, most
Preferably 2~4.In the present invention, the chloro unary alcohol compound is preferably ClOH- [CH2]n-CH3, the value of the n
Scope is consistent with the value range of n described in above-mentioned technical proposal, and details are not described herein.In the present invention, the chloro monohydric alcohol
Class compound is preferably chlorethanol or chloropropyl alcohol.
In the present invention, the carbon number of the di-alcohols compound is preferably 3~15, and more preferably 5~13, most preferably
For 6~10.In the present invention, the dibastic alcohol compound is preferably HO- [CH2CH2]m- OH, the value range of the m with it is upper
State that the value range of m described in technical solution is consistent, and details are not described herein.In the present invention, the dibastic alcohol compound is preferred
For ethylene glycol or polyethylene glycol.In the present invention, the polyethylene glycol is preferably polyethylene glycol 400, Macrogol 600 or poly- second
Glycol 800.
In the present invention, the carbon number of the chloro alkyl epoxide is preferably 3~8, and more preferably 3~6.At this
In invention, the alkyl chloride basic ring oxidation preferably has the structure shown in formula B：
In formula B, R is the alkyl that carbon number is 3~12, is preferably 3~8, more preferably 3~6.In the present invention, institute
It is preferably epoxychloropropane or 1,2- epoxy chlorobutanes to state chloro alkyl epoxide.
In the present invention, the temperature of reaction is preferably 95~150 DEG C in the step (3), more preferably 100~140 DEG C,
More preferably 110~130 DEG C, be most preferably 120 DEG C.In the present invention, the reaction time in the step (3) is preferably 2~5
Hour, more preferably 3~4 it is small when.
In the present invention, the carbon number of the organic amine is preferably 4~10, and more preferably 6~8.In the present invention, institute
Organic amine is stated preferably with the structure shown in formula C：
In the present invention, the o in formula C is consistent with the o described in above-mentioned technical proposal, and details are not described herein.In the present invention,
The organic amine is preferably ethylenediamine, diethylenetriamine, triethylene tetramine, tetraethylenepentamine or pentaethylene hexamine.
In the present invention, the reaction temperature in the step (4) is preferably 60~110 DEG C, more preferably 70~100 DEG C,
Most preferably 80~90 DEG C.In the present invention, when the reaction time in the step (4) is preferably 0.5~3 small, more preferably 1
~2.5 it is small when, be most preferably 1.5~2 it is small when.
In the present invention, the chitosan, alkali compounds, alcohol compound, chlorinated carboxylic acid, chloro unary alcohol chemical combination
Thing, dibastic alcohol compound, the mass ratio of chloro alkyl epoxide and organic amine are preferably (16~20)：(20~40)：(40
~60)：(24~48)：(10~15)：(10~15)：(6~10)：(8~12), more preferably (17~19)：(25~35)：
(45~55)：(30~40)：(11~14)：(11~14)：(7~9)：(9~11), are most preferably 18: 30: 50: 35：(12~
13)：(12~13)：8∶10.
The present invention provides a kind of drilling fluid, the drilling fluid includes the additive for drilling fluid in above-mentioned technical proposal.
In the present invention, the additive for drilling fluid has good rejection, carries and cut performance and filtrate loss controllability, makes of the invention obtain
To drilling fluid also have good rejection, carry and cut performance and filtrate loss controllability, suitable for caving control, take rock zone sand and
Filtrate-loss control can more demanding regional wellbore construction.In the present invention, quality of the additive for drilling fluid in drilling fluid
Content is preferably 1~2%, and more preferably 1.5%.The present invention does not have special limitation to other compositions in the drilling fluid, adopts
With drilling fluid component well known to those skilled in the art.In the present invention, the drilling fluid is preferably composed of the following components：
The additive for drilling fluid of 1~2wt%；
The flow pattern regulator of 0.2~1.0wt%；
The fluid loss additive of 2.0~8.0wt%；
The sealing agent of 3.0~6.0wt%；
The pH adjusting agent of 0.2~1.6wt%；
The potassium chloride of 7.0~12.0wt%；
The sulfur-bearing antioxidant of 0.2~0.6wt%；
The carbonate of 0.2~0.6wt%；
Surplus is water.
In the present invention, the mass content of the additive for drilling fluid is preferably 1.5wt%.In the present invention, the brill
Well liquid inorganic agent is consistent with the additive for drilling fluid described in above-mentioned technical proposal, and details are not described herein.
In the present invention, the mass content of the flow pattern regulator is preferably 0.3~0.9wt%, more preferably 0.4~
0.8wt%, is most preferably 0.5~0.7wt%.In the present invention, the flow pattern regulator preferably includes high viscosity carboxymethyl fibre
Dimension plain one or both of sodium salt and xanthans, more preferably including high-viscosity sodium carboxymethyl cellulose salt and xanthans.
In the present invention, the mass ratio of the high-viscosity sodium carboxymethyl cellulose salt and xanthans is preferably (0.5~1.5):1, more preferably
For (0.8~1.2)：1, it is most preferably 1:1.
In the present invention, the mass content of the fluid loss additive is preferably 3~7wt%, more preferably 4~6wt%, optimal
Elect 5wt% as.In the present invention, the fluid loss additive preferably includes low-viscosity sodium carboxymethyl cellulose salt and sodium carboxymethyl starch
One or both of, more preferably including low-viscosity sodium carboxymethyl cellulose salt and carboxymethyl starch.In the present invention, it is described low
The mass ratio of viscosity carboxymethyl cellulose sodium salt and sodium carboxymethyl starch is preferably (0.6~1):(2~7), more preferably (0.7
~0.9):(3~6), are most preferably 0.8:(4~5).
In the present invention, the mass content of the sealing agent is preferably 4~5wt%, more preferably 4.5wt%.In this hair
In bright, the sealing agent preferably includes calcium carbonate, oil-soluble resin, without the one or more in seepage formation sealant and sulfonated gilsonite.
In the present invention, the mass content of the pH adjusting agent is preferably 0.5~1.2wt%, more preferably 0.8~
1wt%, is most preferably 0.9wt%.In the present invention, the pH adjusting agent preferably includes sodium hydroxide, potassium hydroxide, ammonium hydroxide
In one or more.
In the present invention, the mass content of the potassium chloride is preferably 8~11wt%, more preferably 9~10wt%.
In the present invention, the mass content of the sulfur-bearing antioxidant is preferably 0.3~0.5wt%, more preferably
0.4wt%.In the present invention, the sulfur-bearing antioxidant is preferably included in sodium hydrogensulfite, sodium sulfite, vulcanized sodium and sulphur
It is one or more of.
In the present invention, the mass content of the carbonate is preferably 0.3~0.5wt%, more preferably 0.4wt%.
In the present invention, the carbonate preferably includes one or both of sodium carbonate and potassium carbonate.
In the present invention, the mass content of the water is that additive for drilling fluid, flow pattern regulator, drop filter are removed in drilling fluid
Remaining mass content after mistake agent, sealing agent, pH adjusting agent, potassium chloride, sulfur-bearing antioxidant and carbonate.The present invention is to described
Water does not have special limitation, it is preferred to use deionized water.
Contain additive for drilling fluid in drilling fluid provided by the invention, additive for drilling fluid have it is preferable carry cut performance,
Filtrate loss controllability, is used cooperatively by additive for drilling fluid and other compositions in drilling fluid, drilling fluid is had preferable suppression
Performance, greasy property, filtrate loss controllability and salt resistance pollutant performance processed；And drilling fluid Solid Free particle provided by the invention,
Oil flow channel will not be destroyed, makes drilling fluid that there is preferable reservoir protection.Moreover, drilling well liquid energy provided by the invention effectively solves
Certainly strong retraction mud shale, the borehole well instability problem containing the caving grounds such as mud stone and shale gas horizontal well, meet reservoir protection
It is required that.In addition, additive for drilling fluid is used cooperatively with the other compositions in drilling fluid in the present invention, can protect in drilling fluid
Other compositions are not easily decomposed at high temperature, drilling fluid is had preferable heat-resisting property and antifouling property；And Deal With Drilling Fluid
Agent has preferable greasy property, makes drilling fluid lubricating performance also preferable.In addition, drilling fluid provided by the invention is nontoxic, harmless,
Safety and environmental protection；And cost is relatively low.
The present invention provides a kind of preparation method of drilling fluid described in above-mentioned technical proposal, including：
By additive for drilling fluid, flow pattern regulator, fluid loss additive, sealing agent, pH adjusting agent, carbonate, potassium chloride, contain
Burin-in process is carried out after sulphur antioxidant and water mixing, obtains drilling fluid.
In the present invention, the additive for drilling fluid, flow pattern regulator, fluid loss additive, sealing agent, pH adjusting agent, carbon
Additive for drilling fluid, flow pattern tune described in hydrochlorate, potassium chloride, sulfur-bearing antioxidant and water and their dosage and above-mentioned technical proposal
Section agent, fluid loss additive, sealing agent, pH adjusting agent, carbonate, potassium chloride, sulfur-bearing antioxidant and water and their quality contain
Amount is consistent, and details are not described herein.In the present invention, the temperature of the burin-in process is preferably 140~160 DEG C, and more preferably 145
~155 DEG C, be most preferably 150 DEG C.In the present invention, when the time of the burin-in process is preferably 14~18 small, more preferably
16 it is small when.
Method provided by the invention prepares drilling fluid by raw material of additive for drilling fluid, leads to during drilling fluid is prepared
Cross additive for drilling fluid to be used cooperatively with other compositions in drilling fluid, drilling fluid that method provided by the invention is prepared
With preferable rejection, filtrate loss controllability and reservoir protection performance.In addition, the brill that method provided by the invention is prepared
Well liquid also has preferable temperature resistance, lubricity, pollution resistance.In addition, the drilling fluid that is prepared of method provided by the invention without
It is malicious, harmless, safety and environmental protection；And cost is relatively low.
Raw materials used following embodiments of the present invention are commercial goods.
Embodiment 1
By weight by 16 parts of chitosan (number-average molecular weight 200000), 150 parts of water, 20 parts of sodium hydroxide and methanol 40
Part is uniformly mixed, and alkalization, gelatinization reaction when progress 0.5 is small at 50 DEG C, obtain the first intermediate product；Among first
Product and 24 parts of chloracetic acid stirred at 55 DEG C reaction 2 it is small when, obtain the second intermediate product；Add into the second intermediate product
Enter 10 parts of chlorethanols, 10 parts of ethylene glycol and 6 parts of epoxychloropropane, when reaction 2 is small at 95 DEG C, obtain the 3rd intermediate product；To
8 parts of ethylenediamine is added in 3rd intermediate product, is uniformly mixed, be warming up to 60 DEG C of reactions 0.5 it is small when, obtain kermesinus and glue
Thick is in gelatinous transparent solid, and additive for drilling fluid, product yield 95.89% are can obtain after dry water removal.
The additive for drilling fluid that the embodiment of the present invention 1 is prepared using infrared spectrum is detected, and testing result is such as
Shown in Fig. 1, Fig. 1 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 1 is prepared.As shown in Figure 1, wave number
1151cm-1For the stretching vibration peak of C-O-C, it may be determined that there is chitosan cellular construction；Wave number 1600cm-1There is obvious carboxylic in place
Hydrochlorate carbonylic stretching vibration absworption peak；1419cm-1For the absworption peak of C-N keys, 1196cm-1For the flexural vibrations peak of C-N keys,
3380cm-1For the absworption peak of N-H, it may be determined that the structure containing amine.Tool can be prepared in the method that the embodiment of the present invention 1 provides
There is the target product of Formulas I structure.
Embodiment 2
By weight by 45 parts of 17 parts of chitosan (number-average molecular weight 300000), 160 parts of water, 25 parts of sodium carbonate and ethanol
It is uniformly mixed, alkalization, gelatinization reaction when progress 1 is small at 55 DEG C, obtain the first intermediate product；By the first intermediate product
With 30 parts of chloropropionic acid stirred at 65 DEG C reaction 2.5 it is small when, obtain the second intermediate product；Added into the second intermediate product
11 parts of chloropropyl alcohols, 11 parts of polyethylene glycol 400s and 7 parts of 1,2- epoxy chlorobutanes, when reaction 3 is small at 110 DEG C, obtain among the 3rd
Product；9 parts of diethylenetriamine is added into the 3rd intermediate product, is uniformly mixed, be warming up to 70 DEG C of reactions 1 it is small when, obtain
Sticky to kermesinus is in gelatinous transparent solid, can obtain additive for drilling fluid after dry water removal, product yield is
95.95%.
The additive for drilling fluid that the embodiment of the present invention 2 is prepared using infrared spectrum is detected, and testing result is such as
Shown in Fig. 2, Fig. 2 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 2 is prepared.As can be seen that wave number
1152cm-1For the stretching vibration peak of C-O-C, it may be determined that there is chitosan cellular construction；Wave number 1601cm-1There is obvious carboxylic in place
Hydrochlorate carbonylic stretching vibration absworption peak；1418cm-1For the absworption peak of C-N keys, 1195cm-1For the flexural vibrations peak of C-N keys,
3382cm-1For the absworption peak of N-H, it may be determined that the structure containing amine.Tool can be prepared in the method that the embodiment of the present invention 2 provides
There is the target product of Formulas I structure.
Embodiment 3
By weight by 18 parts of chitosan (number-average molecular weight 350000), 170 parts of water, 30 parts of potassium hydroxide and propyl alcohol 50
Part is uniformly mixed, and alkalization, gelatinization reaction when progress 1.5 is small at 60 DEG C, obtain the first intermediate product；Among first
Product and 36 parts of chloro butyric acid stirred at 70 DEG C reaction 3 it is small when, obtain the second intermediate product；Add into the second intermediate product
Enter 12 parts of chlorethanols, 12 parts of Macrogol 600s and 8 parts of epoxychloropropane, when reaction 4 is small at 120 DEG C, obtain production among the 3rd
Thing；10 parts of triethylene tetramine is added into the 3rd intermediate product, is uniformly mixed, be warming up to 80 DEG C of reactions 2 it is small when, obtain
Sticky kermesinus is in gelatinous transparent solid, and additive for drilling fluid, product yield 96.38% are can obtain after dry water removal.
The additive for drilling fluid that the embodiment of the present invention 3 is prepared using infrared spectrum is detected, and testing result is such as
Shown in Fig. 3, Fig. 3 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 3 is prepared.As can be seen that wave number
1154cm-1For the stretching vibration peak of C-O-C, it may be determined that there is chitosan cellular construction；Wave number 1603cm-1There is obvious carboxylic in place
Hydrochlorate carbonylic stretching vibration absworption peak；1420cm-1For the absworption peak of C-N keys, 1194cm-1For the flexural vibrations peak of C-N keys,
3381cm-1For the absworption peak of N-H, it may be determined that the structure containing amine.Tool can be prepared in the method that the embodiment of the present invention 3 provides
There is the target product of Formulas I structure.
Embodiment 4
By weight by 50 parts of 19 parts of chitosan (number-average molecular weight 400000), 180 parts of water, 35 parts of potassium carbonate and butanol
It is uniformly mixed, alkalization, gelatinization reaction when progress 2 is small at 70 DEG C, obtain the first intermediate product；By the first intermediate product
With 42 parts of chloracetic acid stirred at 75 DEG C reaction 3.5 it is small when, obtain the second intermediate product；Added into the second intermediate product
14 parts of chlorethanols, 14 parts of polyethylene glycol-800s and 9 parts of epoxychloropropane, when reaction 4.5 is small at 140 DEG C, obtain production among the 3rd
Thing；11 parts of tetraethylenepentamine is added into the 3rd intermediate product, is uniformly mixed, be warming up to 100 DEG C of reactions 2.5 it is small when,
It is in gelatinous transparent solid that it is sticky, which to obtain kermesinus, can obtain additive for drilling fluid after dry water removal, product yield is
96.77%.
The additive for drilling fluid that the embodiment of the present invention 4 is prepared using infrared spectrum is detected, and testing result is such as
Shown in Fig. 4, Fig. 4 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 4 is prepared.As can be seen that wave number
1152cm-1For the stretching vibration peak of C-O-C, it may be determined that there is chitosan cellular construction；Wave number 1601cm-1There is obvious carboxylic in place
Hydrochlorate carbonylic stretching vibration absworption peak；1421cm-1For the absworption peak of C-N keys, 1192cm-1For the flexural vibrations peak of C-N keys,
3383cm-1For the absworption peak of N-H, it may be determined that the structure containing amine.Tool can be prepared in the method that the embodiment of the present invention 4 provides
There is the target product of Formulas I structure.
Embodiment 5
By weight by 20 parts of chitosan (number-average molecular weight 500000), 200 parts of water, 40 parts of potassium carbonate and isopropanol 60
Part is uniformly mixed, and alkalization, gelatinization reaction when progress 2 is small at 80 DEG C, obtain the first intermediate product；Is produced from first centre
Thing and 48 parts of chloracetic acid stirred at 80 DEG C reaction 4 it is small when, obtain the second intermediate product；Added into the second intermediate product
15 parts of chlorethanols, 15 parts of polyethylene glycol-800s and 10 parts of epoxychloropropane, when reaction 5 is small at 150 DEG C, obtain production among the 3rd
Thing；12 parts of pentaethylene hexamine is added into the 3rd intermediate product, is uniformly mixed, be warming up to 110 DEG C of reactions 3 it is small when, obtain
Sticky to kermesinus is in gelatinous transparent solid, can obtain additive for drilling fluid after dry water removal, product yield is
96.92%.
The additive for drilling fluid that the embodiment of the present invention 5 is prepared using infrared spectrum is detected, and testing result is such as
Shown in Fig. 5, Fig. 5 is the infrared spectrogram for the additive for drilling fluid that the embodiment of the present invention 5 is prepared.As can be seen that wave number
1155cm-1For the stretching vibration peak of C-O-C, it may be determined that there is chitosan cellular construction；Wave number 1604cm-1There is obvious carboxylic in place
Hydrochlorate carbonylic stretching vibration absworption peak；1422cm-1For the absworption peak of C-N keys, 1190cm-1For the flexural vibrations peak of C-N keys,
3381cm-1For the absworption peak of N-H, it may be determined that the structure containing amine.Tool can be prepared in the method that the embodiment of the present invention 5 provides
There is the target product of Formulas I structure.
Embodiment 6
The rejection for the additive for drilling fluid that the test embodiment of the present invention 1~5 is prepared, specific method are：
By above-mentioned mass concentration be 1% additive for drilling fluid aqueous solution under 7000 revs/min of speed high-speed stirred
After 5min, pour into spare in ageing can；Take the landwaste of 2.0mm~5.0mm to dry 4h at 103 DEG C, be down to room temperature；Weigh G0g
The additive for drilling fluid that landwaste is put into ageing can with above-mentioned mass concentration is 1% rolls 16h at 150 DEG C, is taken out after cooling, uses
Aperture 0.42mm sieve recycling landwaste, the dry 4h at 103 DEG C, is down to room temperature weighing recycling landwaste quality and is denoted as G1；Then by
Claim overweight recycling landwaste to be put into clear water at 150 DEG C and roll 2h, taken out after cooling, recycling landwaste is sieved with aperture 0.42mm,
The dry 4h at 103 DEG C, is cooled to room temperature weighing recycling landwaste quality, is denoted as G2；Shale is calculated according to following formula once
The rate of recovery, shale secondary returning yield and shale relative recovery：
Shale primary recovery=G1/G0× 100%；
Shale secondary returning yield=G2/G0× 100%；
Shale relative recovery=shale secondary returning yield/shale primary recovery × 100%.
Test result is as shown in table 1, the additive for drilling fluid rejection test knot that table 1 is prepared for the embodiment of the present invention
Fruit.
Additive for drilling fluid rejection test result prepared by 1 embodiment of the present invention of table
Note：R1：Shale primary recovery, R：Shale relative recovery.
As can be seen from Table 1, shale 150 DEG C of high temperature in the additive for drilling fluid aqueous solution that concentration is 1% roll 16h,
Shale primary recovery ＞ 98%, relative recovery ＞ 99%, additive for drilling fluid provided by the invention shows excellent suppression
Caving-preventing characteristic processed.
Embodiment 7
The carrying for additive for drilling fluid that the test embodiment of the present invention 1~5 is prepared cuts performance and filtrate loss controllability, has
Body method is：
The additive for drilling fluid that mass concentration is 1.5% is added in fresh water soil paste, under 7000 revs/min of speed at a high speed
After stirring 5min, pour into and roll 16h in ageing can at 150 DEG C, taken out after cooling, drilling well is tested on middle pressure dehydration analyzer
The middle pressure fluid loss FL, unit mL of liquid.
Test result is as shown in table 2, the additive for drilling fluid filtrate loss controllability and carry that table 2 is prepared for the embodiment of the present invention
Cut the performance test results.
Additive for drilling fluid filtrate loss controllability and carry and cut the performance test results (150 prepared by 2 embodiment of the present invention of table
DEG C, 16 it is small when)
Note：When hot rolling condition is 150 DEG C 16 small；AV is apparent viscosity, and PV is plastic viscosity, and YP is yield value, and G '/G " is quiet
Shear force, FL are middle filter pressing loss
As shown in Table 2, in fresh water soil paste (the fresh water soil paste preparation method of 350mL6%：The anhydrous carbon of 3g is added in 1L water
Sour sodium and 60g drilling fluid experiment sodium bentonite, after stirring 20min, room temperature is made after placing 24h, and bentonite is in fresh water soil paste
In mass concentration to add 1.5% additive for drilling fluid in 6%), after 150 DEG C of high temperature roll 16h, with being not added with drilling fluid
Inorganic agent is compared, and shear force rises to 2.5/5.5,2.5/6.5,2.5/6.5,3.0/7.0,3.0/7.0 by 0/0, middle filter pressing loss by
40.0mL is down to 4.2,4.0,4.0,4.0,3.8mL, filter loss reduced rate is respectively：89.5%th, 90.0%, 90.0%,
90.0%th, 90.5%.Additive for drilling fluid provided by the invention, which shows preferably to carry, to be cut and filtrate loss controllability.
Embodiment 8
The additive for drilling fluid that the 4g embodiment of the present invention 1 is prepared is added in 396g water, in the speed of 5000r/min
Lower stirring 5 minutes, adds the xanthans XC, 1.3g of high-viscosity sodium carboxymethyl cellulose the salt HV-CMC, 0.4g of 0.4g thereto
Low-viscosity sodium carboxymethyl cellulose salt LV-CMC, stirred 20 minutes under the speed of 5000r/min, add the carboxylic first of 6.7g
The calcium carbonate of base sodium starch CMS-Na, 12g, the Na of the NaOH of 0.8g, 0.8g2CO3, 20 points are stirred under the speed of 5000r/min
Clock, adds the potassium chloride of 28g, and the sodium hydrogensulfite of 0.8g, is stirred 20 minutes under the speed of 5000r/min, loads aging
Through 150 DEG C of rolling 16h in tank, drilling fluid is obtained.
Embodiment 9
The additive for drilling fluid that the 5g embodiment of the present invention 2 is prepared is added in 395g water, in the speed of 5000r/min
Lower stirring 5 minutes, adds the xanthans XC of high-viscosity sodium carboxymethyl cellulose the salt HV-CMC, 1.0g of 1.0g thereto, 4g's
Low-viscosity sodium carboxymethyl cellulose salt LV-CMC, is stirred 20 minutes under the speed of 5000r/min, adds the carboxymethyl of 20g
Sodium starch CMS-Na, 16g without seepage formation sealant WLP, the Na of the NaOH of 4g, 1.6g2CO3, stirred under the speed of 5000r/min
Mix 20 minutes, add the potassium chloride of 40g, the sodium sulfite of 1.6g, is stirred 20 minutes under the speed of 5000r/min, is loaded
Through 150 DEG C of rolling 16h in ageing can, drilling fluid is obtained.
Embodiment 10
The additive for drilling fluid that the 8g embodiment of the present invention 3 is prepared is added in 392g water, in the speed of 5000r/min
Lower stirring 5 minutes, adds the xanthans XC, 5.3g of high-viscosity sodium carboxymethyl cellulose the salt HV-CMC, 2.0g of 2.0g thereto
Low-viscosity sodium carboxymethyl cellulose salt LV-CMC, stirred 20 minutes under the speed of 5000r/min, add the carboxylic of 26.7g
The sulfonated gilsonite of methyl starch sodium CMS-Na, 24g, the Na of the NaOH of 6.4g, 2.4g2CO3, stirred under the speed of 5000r/min
20 minutes, the potassium chloride of 48g is added, the sulphur of 2.4g, is stirred 20 minutes under the speed of 5000r/min, loads ageing can
It is interior to roll 16h through 150 DEG C, obtain drilling fluid.
Embodiment 11
The apparent viscosity of the drilling fluid that is prepared of the test embodiment of the present invention 8~10, plastic viscosity, yield value, quiet cut
Power, middle filter pressing loss, high filter pressing loss, anti-salt property, anticalcium performance, anti-bentonite performance, water resistant leaching performance, antigen oiliness
Energy, rock core primary recovery, rock core relative recovery, extreme boundary lubrication coefficient, Dynamic Permeability recovery value, static resume permeability
Value and heat-resisting property：
According to GB/T 16783.1-2014《Industrial gas oil drilling fluid on-the-spot test part 1：Water-base drilling fluid》
Standard, test the apparent viscosity of drilling fluid provided by the invention, plastic viscosity, yield value, gel strength, middle filter pressing loss, height
The high filter pressing loss of temperature, anti-salt property, anticalcium performance, anti-bentonite performance, water resistant leaching performance, anti-performance of crude oils.
According to drilling fluid core recovery test method, test drilling fluid provided by the invention rock core primary recovery and
Relative recovery, concrete operations are as follows：
350mL drilling fluids provided by the invention are measured to stir in cup in height, after stirring 5min under the speed of 7000r/min,
Drilling fluid is poured into spare in ageing can；Take the landwaste of 2.0mm~5.0mm to dry 4h at 103 DEG C, be down to room temperature, weigh G0g
Landwaste is put into ageing can and 16h is rolled at 180 DEG C with the drilling fluid in ageing can, is taken out after cooling, is 0.42mm sieves with aperture
Landwaste is recycled, the dry 4h at 103 DEG C, is down to room temperature weighing recycling landwaste quality and is denoted as G1；Then overweight recycling will have been claimed
Landwaste, which is put into clear water at 180 DEG C, rolls 2h, is taken out after cooling, and the sieve for being 0.42mm with aperture recycles landwaste, at 103 DEG C
Dry 4h, is cooled to room temperature weighing recycling landwaste quality and is denoted as G2.A shale recovery ratio R is calculated respectively1, the recycling of secondary shale
Rate R2With opposite shale recovery ratio R.
R1=G1/G0× 100%；
R2=G2/G0× 100%；
R=R2/R1× 100%.
The extreme boundary lubrication coefficient of drilling fluid provided by the invention is tested by the following method：
The extreme boundary lubrication instrument of the EP models provided using Zhengzhou north and south Instrument Design Co., Ltd, setting instrument is in 300r/
15min is operated under min, it is 60r/min then to adjust rotating speed；
Sliding block in instrument is immersed in drilling fluid provided by the invention, it is 16.95N/m to adjust torque spanner value, and instrument is transported
Turn 5min, the numerical value shown when reading mud soak sliding block provided by the invention on instrument, extreme boundary lubrication coefficient calculation formula
For：
In above formula：K is extreme boundary lubrication coefficient；The number shown when X is mud soak sliding block provided by the invention on instrument
Value.
The reservoir protection of drilling fluid provided by the invention is tested by the following method：
The full-automatic permeability of the Fann-389AP models provided using Beijing Zhong Huitiancheng Science and Technology Ltd.s blocks dress
Put；Full-automatic permeability plugging device temperature is raised to 120 DEG C, loads rock core, is permeated with kerosene, record initial pressure,
Maximum pressure, steady pressure, confined pressure are bigger 2MPa than flowing pressure；
Using drilling fluid provided by the invention progress reversely dynamic or static pollution, used in graduated cylinder reception liquid body and record
Time and volume；
Again forward osmosis, record initial pressure, maximum pressure, steady pressure are carried out with kerosene；
The ratio of the steady pressure after steady pressure and pollution before pollution is permeability resume figure, reflects the present invention
Extent of injury of the drilling fluid of offer to formation rock.
According to《GB/T 16783.1-2014 industrial gas oil drilling fluid on-the-spot test part 1s：Water-base drilling fluid》
Standard, tests the heat-resisting property of drilling fluid provided by the invention.
Test result is as shown in table 3, and the performance for the drilling fluid that table 3 is prepared for 4~embodiment of the embodiment of the present invention 6 is surveyed
Test result.
The performance test results for the drilling fluid that 3 embodiment of the present invention 8~10 of table is prepared
As seen from the above embodiment, the present invention provides a kind of additive for drilling fluid, including the structure shown in Formulas I；Formulas I
In, a is that 1200~3100, q is that 1~10, p is that 2~10, m is that 1~16, n is that 1~5, o is that 0~4, M is alkali metal.This
Invention provides a kind of preparation method of the additive for drilling fluid described in above-mentioned technical proposal, comprises the following steps：(1) shell is gathered
Sugar, alkali compounds and alcohol compound are reacted, and obtain the first intermediate product；(2) by the first intermediate product and chloro carboxylic
Acid is reacted, and obtains the second intermediate product；(3) by the second intermediate product and chloro unary alcohol compound, di-alcohols
Compound and chloro alkyl epoxide are reacted, and obtain the 3rd intermediate product；(4) the 3rd intermediate product and organic amine are carried out
Reaction, obtains additive for drilling fluid.Additive for drilling fluid provided by the invention have good rejection, carry cut performance and
Filtrate loss controllability.
Above-described is only the preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of additive for drilling fluid, including the structure shown in Formulas I：
In Formulas I, a is that 1200~3100, q is that 1~10, p is that 2~10, m is that 1~16, n is that 1~5, o is that 0~4, M is alkali metal
Element.
2. additive for drilling fluid according to claim 1, it is characterised in that the q is that 1~5, p is 2~5.
3. additive for drilling fluid according to claim 1, it is characterised in that the m is that 9~15, M is Na or K.
4. a kind of preparation method of the additive for drilling fluid described in claim 1, comprises the following steps：
(1) chitosan, alkali compounds and alcohol compound are reacted, obtains the first intermediate product；The alkalescence chemical combination
Thing is alkali carbonate or alkali metal hydroxide；
(2) the first intermediate product and chlorinated carboxylic acid are reacted, obtains the second intermediate product；The carbon atom of the chlorinated carboxylic acid
Number is 2~11；
(3) by the second intermediate product and chloro unary alcohol compound, dibastic alcohol compound and chloro alkyl epoxide into
Row reaction, obtains the 3rd intermediate product；The carbon number of the chloro unary alcohol compound is 2~11；The di-alcohols
The carbon number of compound is 2~17；The carbon number of the chloro alkyl epoxide is 3~12；
(4) the 3rd intermediate product and organic amine are reacted, obtains additive for drilling fluid；The carbon number of the organic amine is
2~12.
5. according to the method described in claim 4, it is characterized in that, the number-average molecular weight of the chitosan for 200000~
500000。
6. according to the method described in claim 4, it is characterized in that, the carbon number of alcohol compound is 1 in the step (1)
~10.
7. according to the method described in claim 4, it is characterized in that, the dibastic alcohol compound in the step (3) is second two
Alcohol or polyethylene glycol.
8. according to the method described in claim 4, it is characterized in that, the chitosan, alkali compounds, alcohol compound, chlorine
Mass ratio for carboxylic acid, chloro unary alcohol compound, dibastic alcohol compound, chloro alkyl epoxide and organic amine is
(16~20)：(20~40)：(40~60)：(24~48)：(10~15)：(10~15)：(6~10)：(8~12).
9. according to the method described in claim 4, it is characterized in that, the reaction temperature in the step (1) is 50~80 DEG C；
Reaction temperature in the step (2) is 55~80 DEG C；
Reaction temperature in the step (3) is 95~150 DEG C；
Reaction temperature in the step (4) is 60~110 DEG C.
10. a kind of drilling fluid, including the additive for drilling fluid in claims 1 to 3 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949731.XA CN107987182B (en) | 2016-10-26 | 2016-10-26 | Drilling fluid treating agent, preparation method thereof and drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610949731.XA CN107987182B (en) | 2016-10-26 | 2016-10-26 | Drilling fluid treating agent, preparation method thereof and drilling fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107987182A true CN107987182A (en) | 2018-05-04 |
| CN107987182B CN107987182B (en) | 2020-01-14 |
Family
ID=62029396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610949731.XA Active CN107987182B (en) | 2016-10-26 | 2016-10-26 | Drilling fluid treating agent, preparation method thereof and drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107987182B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111320972A (en) * | 2018-12-13 | 2020-06-23 | 中石化石油工程技术服务有限公司 | Amido chitosan, preparation method thereof and drilling fluid |
| CN114621735A (en) * | 2020-12-14 | 2022-06-14 | 中国石油化工股份有限公司 | Drilling fluid hydration type lubricant and preparation method and application thereof |
| CN115746311A (en) * | 2021-09-03 | 2023-03-07 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid cutting agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040670A (en) * | 2010-11-29 | 2011-05-04 | 青蛙王子(中国)日化有限公司 | Carboxymethyl chitosan quaternary ammonium salt as well as preparation and application thereof in preparing natural cosmetic antibacterial agent |
-
2016
- 2016-10-26 CN CN201610949731.XA patent/CN107987182B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040670A (en) * | 2010-11-29 | 2011-05-04 | 青蛙王子(中国)日化有限公司 | Carboxymethyl chitosan quaternary ammonium salt as well as preparation and application thereof in preparing natural cosmetic antibacterial agent |
Non-Patent Citations (1)
| Title |
|---|
| 司西强: "钻井液用烷基糖苷及其改性产品的研究现状及发展趋势", 《中外能源》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111320972A (en) * | 2018-12-13 | 2020-06-23 | 中石化石油工程技术服务有限公司 | Amido chitosan, preparation method thereof and drilling fluid |
| CN111320972B (en) * | 2018-12-13 | 2022-11-18 | 中石化石油工程技术服务有限公司 | Amido chitosan, preparation method thereof and drilling fluid |
| CN114621735A (en) * | 2020-12-14 | 2022-06-14 | 中国石油化工股份有限公司 | Drilling fluid hydration type lubricant and preparation method and application thereof |
| CN115746311A (en) * | 2021-09-03 | 2023-03-07 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid cutting agent and preparation method thereof |
| CN115746311B (en) * | 2021-09-03 | 2024-02-06 | 中国石油天然气集团有限公司 | Environment-friendly drilling fluid cutting agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107987182B (en) | 2020-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Fink | Petroleum engineer's guide to oil field chemicals and fluids | |
| CN107973880A (en) | A kind of additive for drilling fluid and preparation method thereof and drilling fluid | |
| AU739305B2 (en) | Drilling fluid additive and process therewith | |
| EP1339811B1 (en) | Environmentally acceptable fluid polymer suspension for oil field services | |
| CN101910355B (en) | Viscoelastic surfactant based wellbore fluids and methods of use | |
| CN107973865A (en) | A kind of modification of chitosan and preparation method thereof and drilling fluid | |
| CN106675535A (en) | Environment-friendly water-based drilling fluid and preparation method thereof | |
| CN107987182A (en) | A kind of additive for drilling fluid and preparation method thereof and drilling fluid | |
| CN107973827A (en) | A kind of aminoalkyl glucosides graft copolymer and preparation method thereof and drilling fluid | |
| NO316321B1 (en) | Method for regulating the permeability of the walls in a well degree through a geological formation, as well as drilling fluid and the use of ethydrophobically modified cellulose derivative | |
| NO322883B1 (en) | Stabilized fluids containing soluble zinc and process to increase their viscosity at low shear rate | |
| US20120305250A1 (en) | Non-invasive cement spacer fluid compositions, spacer fluid products, methods of well operation and well apparatus | |
| CN109776728A (en) | Temporary plugging agent for drilling fluid and preparation method thereof and water-base drilling fluid and application | |
| CN106701046A (en) | Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof | |
| CN104114669A (en) | Clay-swelling inhibitor, compositions comprising said inhibitor and processes using said inhibitor | |
| WO2016099537A1 (en) | Additive of chemically-modified cellulose nanofibrils or cellulose nanocrystals | |
| CA2961569C (en) | Additive of cellulose nanofibrils or nanocrystals and a second polymer | |
| MX2013001791A (en) | Nonionic hydrophobically substituted cellulose ethers. | |
| CN104114670A (en) | Novel agent for inhibiting the swelling of clays, compositions comprising said agent and methods implementing said agent | |
| CN109666466A (en) | A kind of low permeability reservoir environment-protection nano water-base drilling fluid and preparation method thereof | |
| WO2015189656A1 (en) | Water-based wellbore servicing fluids with high temperature fluid loss control additive | |
| CN110564384B (en) | Viscosity improver for oil-based drilling fluid and preparation method thereof | |
| CN104403655A (en) | Novel fracturing fluid for oil field and preparation method of fracturing liquid | |
| US5502030A (en) | Liquid additive comprising a sulfonated asphalt and processes therefor and therewith | |
| Shah et al. | Evaluation of rheological properties of the exopolysaccharide of Sphingomonas paucimobilis GS-1 for application in oil exploration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |