CN108587580A - Drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin and preparation method thereof - Google Patents
Drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin and preparation method thereof Download PDFInfo
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- CN108587580A CN108587580A CN201810334211.7A CN201810334211A CN108587580A CN 108587580 A CN108587580 A CN 108587580A CN 201810334211 A CN201810334211 A CN 201810334211A CN 108587580 A CN108587580 A CN 108587580A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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- 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
- C08F2/00—Processes of polymerisation
- C08F2/04—Polymerisation in solution
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- 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
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
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- 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
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
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- 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
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
- C08F220/585—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine and containing other heteroatoms, e.g. 2-acrylamido-2-methylpropane sulfonic acid [AMPS]
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Abstract
A kind of drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin and preparation method thereof, the fluid loss additive modified gum resin is made of following raw materials：Clear water, acrylamide, 2 acrylamide, 2 methyl propane sulfonic acid, initiator, gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol.The preparation method includes the following steps：Aqueous solution polymerization prepares high-temperature salt-resistant fluid loss additive.The present invention modified gum resin property be：Moisture≤10.0%, apparent viscosity≤15.0mPas, 180 DEG C of heat roll 15% salt water test slurry high temperature and high pressure filter loss≤25.0mL after 16h, and 180 DEG C of heat roll compound salt slurries high temperature and high pressure filter loss≤28.0mL after 16h.The present invention solves the problems, such as that fluid loss additive temperature anti-salt property is poor in present drilling process, production cost is high, complex process, while the high-temperature salt-resistant fluid loss additive modified gum resin has stronger biological degradability, effectively reduces the pollution to reservoir.
Description
Technical field
The present invention relates to a kind of petroleum drilling fluid auxiliary agent, specifically a kind of drilling fluid is modified with high-temperature salt-resistant fluid loss additive and is set
Gum resin.The invention further relates to the drilling fluid preparation methods of high-temperature salt-resistant fluid loss additive modified gum resin.
Background technology
As industrial development is continuously increased oil demand amount, exploitation is needed to be stored at the petroleum resources of stratum depths,
To drilling technology, more stringent requirements are proposed for this.For fluid loss additive as important additive for drilling fluid, temperature-resistant anti-salt ability is straight
The performance for influencing water-base drilling fluid is connect, and market often uses fluid loss additive effect in high temperature and high salt well not notable at present, it is difficult to
Meet drilling well needs；Traditional drilling fluid materials are difficult to degrade, and can cause significantly to pollute to reservoir, influence later stage oil/gas well
Exploitation yield.
Inventor retrieves following Patents documents：CN106367043A discloses a kind of high temperature resistant drilling fluids filtrate reducing
The preparation method of agent in the reaction vessel mixes glycan class additive for drilling fluid with water under room temperature, then into reaction vessel plus
Enter sodium benzoate and hexamethylenetetramine, plant polyphenol kind material is then added in the mixed liquor into reaction vessel, finally will
Mixture in reaction vessel, vacuum drying crush the drilling fluid additive obtained suitable for high temperature well.CN105670576A
A kind of filtrate reducer for drilling fluid is disclosed, by acrylamide, 2- acrylamide-2-methylpro panesulfonic acids and hexadecyldimethyl benzyl ammonium
Allyl ammonium chloride is prepared.The present invention is with acrylamide, 2- acrylamide-2-methylpro panesulfonic acids and etradecyldimethylamine
Base allyl ammonium chloride is that raw material prepares filtrate reducer for drilling fluid, and the filtrate reducer for drilling fluid has preferable filtration reduction, together
When, there is preferable heat and salinity tolerance performance.CN105567178A discloses a kind of environment-friendly oil-based filtrate reducer for drilling fluid of high temperature resistance,
It is characterized in that：It is made of the material of following mass fraction：Sea shells, 10~30 parts of spiral case class material, calcium carbonate superfine powder 10
~20 parts, 15~25 parts of salt resistance soil material, 20~30 parts of paper fiber material, 30~60 parts of organic lignite material.
CN103013462A discloses a kind of drilling fluid both sexes heat and salinity tolerance fluid loss additive and preparation method thereof.By following constant weight
The raw material composition of part：Acrylamide, olefin sulfonic acid or alkenyl sulfonate, acrylic acid, cationic monomer, rigid unitary, hydroxide
Sodium, potassium hydroxide, dispersant, deionized water, molecular weight regulator, initiator；Preparation method：Acryloyl is added in the reactor
Amine, acrylic acid, olefin sulfonic acid or alkenyl sulfonate, cationic monomer, rigid unitary and deionized water adjust pH value of solution after dissolving
Value is transferred to reaction kettle after dispersant is added, and leads to nitrogen deoxygenation and initiator initiation polymerization is added, take out after reaction gluey
Object is dry, pulverizes and sieves.CN 104312554A disclose a kind of filtrate reducer for drilling fluid and preparation method thereof.Filtrate reducing
Agent includes following components：Glycol methacrylate, zinc stearate, dioctyl phthalate, dicyclohexyl amine, poly- isobutyl
Alkene, talcum powder, titanate esters, sodium benzoate, carboxymethyl cellulose, sodium dihydrogen phosphate, acrylic acid, organic hydrogen polysiloxanes, water.
Preparation method is that glycol methacrylate, dioctyl phthalate and polyisobutene are added in reaction kettle, is added
Hot mixing is uniform, and dicyclohexyl amine and sodium benzoate is added, titanate esters and carboxymethyl cellulose are added after being stirred to react, and mixes
Uniformly, organic hydrogen polysiloxanes are added, heating stirring is uniform, is then added thereto zinc stearate, talcum powder and acrylic acid, mixes
It closes uniformly, biphosphate sodium water solution is finally added in batches under heating stirring state, until adding.
How the above technology is for enable drilling fluid be solved now with high-temperature salt-resistant fluid loss additive modified gum resin
The problem of fluid loss additive temperature-resistant anti-salt performance difference in drilling process, while the high-temperature salt-resistant fluid loss additive modified gum resin energy
The pollution to reservoir is effectively reduced, specific guidance program is not provided.
Invention content
Technical problem to be solved by the present invention lies in provide a kind of drilling fluid high-temperature salt-resistant fluid loss additive modified gum
Resin, it can solve the problems, such as that fluid loss additive temperature-resistant anti-salt performance is poor in present drilling process, while high-temperature salt-resistant drop filter
Losing agent modified gum resin has stronger biological degradability, can effectively reduce the pollution to reservoir.
For this purpose, another technical problem to be solved by this invention is, a kind of drilling fluid high-temperature salt-resistant drop filter is provided
Lose the preparation method of agent modified gum resin.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin (or perhaps the drilling fluid high temperature resistant salt resistance of drilling fluid
The modified gum resin of fluid loss additive), its technical solution is that it is to match (parts by weight, mass fraction) by following weight
Raw material made of：
The preparation method of the drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin includes following technique
Step：1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl is added in reaction kettle by above-mentioned weight proportion
Propane sulfonic acid is slowly heated to 60 DEG C~70 DEG C, opens stirring, adds initiator and carries out aqueous solution polymerization reaction, polymerisation
Time is 2~2.5h (i.e. 2~2.5 hours), and temperature is 60 DEG C~70 DEG C, finally by solution dries pulverizing, obtains powder (size
Discrete particle less than 1mm), drying temperature is 50 DEG C~60 DEG C；2. preparing (resistance to) high-temperature salt-resistant fluid loss additive：By above-mentioned weight
Gum resin, dimethyl diallyl ammonium chloride, the polyvinyl alcohol of proportioning are added in the powder, are then mixed equal
Even, products therefrom is drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin.
Above-mentioned initiator is one or more of ammonium persulfate, sodium hydrogensulfite, azodiisobutyronitrile arbitrarily to compare
The composition (mixture) that example is formed.Above-mentioned gum resin is commercial goods, gum resin gummy, resin and a small amount of essence
Oil, main component：Arabia gum glue can buy the natural gum tree produced by Jinan Zhi Hengzhiyuan Chemical Industry Science Co., Ltd
Fat, address：No. 96 Shandong in the Jinan City, Shandong Province Lixia District industry South Road areas Chemical market A 004.
In above-mentioned technical proposal, preferred technical solution can be, the step 1. in stir speed (S.S.) be preferably 50~
100r/min, 2. middle stir speed (S.S.) is preferably 50~100r/min to step.
In above-mentioned technical proposal, the preferred technical solution may also be that the drilling fluid drops filter with (resistance to) high-temperature salt-resistant
It is made of the raw material that is matched following weight to lose agent modified gum resin：
The initiator is the composition of ammonium persulfate, three kinds of sodium hydrogensulfite, azodiisobutyronitrile raw materials, persulfuric acid
Ammonium, sodium hydrogensulfite, azodiisobutyronitrile weight ratio be 1: 1.5: 1.5.
The preparation method of the drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin includes following technique
Step：1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl is added in reaction kettle by above-mentioned weight proportion
Propane sulfonic acid is slowly heated to 60 DEG C, opens stirring, adds initiator and carries out aqueous solution polymerization reaction, polymerization reaction time is
2.5h, temperature are 60 DEG C, finally by solution dries pulverizing, obtain powder, drying temperature is 50 DEG C；2. preparing (resistance to) high-temperature salt-resistant
Fluid loss additive：The gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol of above-mentioned weight proportion are added to the powder
In, it is then mixed evenly, products therefrom is drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin.
In above-mentioned technical proposal, the preferred technical solution may also be that the drilling fluid drops filter with (resistance to) high-temperature salt-resistant
It is made of the raw material that is matched following weight to lose agent modified gum resin：
The initiator is the composition of two kinds of ammonium persulfate, sodium hydrogensulfite raw materials, ammonium persulfate and bisulfite
The weight ratio of sodium is 1: 1.5.
The preparation method of the drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin includes following technique
Step：1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl is added in reaction kettle by above-mentioned weight proportion
Propane sulfonic acid is slowly heated to 65 DEG C, opens stirring, adds initiator and carries out aqueous solution polymerization reaction, polymerization reaction time is
2.5h, temperature are 65 DEG C, finally by solution dries pulverizing, obtain powder, drying temperature is 55 DEG C；2. preparing (resistance to) high-temperature salt-resistant
Fluid loss additive：The gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol of above-mentioned weight proportion are added to the powder
In, it is then mixed evenly, products therefrom is drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin.
In above-mentioned technical proposal, the preferred technical solution may also be that the drilling fluid drops filter with (resistance to) high-temperature salt-resistant
It is made of the raw material that is matched following weight to lose agent modified gum resin：
The initiator is the composition of two kinds of ammonium persulfate, azodiisobutyronitrile raw materials, ammonium persulfate and azo two
The weight ratio of isobutyronitrile is 1: 2.
The preparation method of the drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin includes following technique
Step：1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl is added in reaction kettle by above-mentioned weight proportion
Propane sulfonic acid is slowly heated to 70 DEG C, opens stirring, adds initiator and carries out aqueous solution polymerization reaction, polymerization reaction time is
2h, temperature are 70 DEG C, finally by solution dries pulverizing, obtain powder, drying temperature is 60 DEG C；2. preparing (resistance to) high-temperature salt-resistant drop
Fluid loss agents：The gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol of above-mentioned weight proportion are added to the powder
In, it is then mixed evenly, products therefrom is drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin.
(resistance to) high-temperature salt-resistant fluid loss additive modified gum resin of the present invention has reached the good impact of performance, referring to this theory
The bright subsequent table 1 of book, high-temperature salt-resistant fluid loss additive modified gum resin property of the invention are：Moisture≤10.0%, it is apparent viscous
Degree≤15.0mPas, 180 DEG C of heat roll 15% salt water test slurry high temperature and high pressure filter loss≤25.0mL after 16h, 180 DEG C of heat rollings
Compound salt slurries high temperature and high pressure filter loss≤28.0mL after 16h.
(resistance to) high-temperature salt-resistant fluid loss additive modified gum resin of the present invention has below compared with the prior art beneficial to effect
Fruit：(1) the high-temperature salt-resistant fluid loss additive modified gum resin, in fresh water, brine, saturated brine and CaCl2In drilling fluid
With preferable filtrate reducing effect.The filter loss for remaining to preferably control drilling fluid after 180 DEG C of superhigh temperature agings, embodies
Good temperature resistance, salt resistance and anticalcium performance adapt to complicated drilling condition, have good temperature-resistant anti-salt performance and anticalcium
Invade ability.(2) the high-temperature salt-resistant fluid loss additive modified gum resin preparation process is simple, and easy to implement, production cost is low.
(3) it can slowly degrade naturally under the high-temperature salt-resistant fluid loss additive modified gum non-toxic, harmless, natural conditions, it can be very well
Protection oil-gas Layer.
In conclusion the present invention solves in present drilling process, fluid loss additive temperature-resistant anti-salt performance is poor, production cost is high,
The problem of complex process, while the high-temperature salt-resistant fluid loss additive modified gum resin has stronger biological degradability, effectively drops
The low pollution to reservoir.
Specific implementation mode
To keep the goal of the invention, technical solution and advantage of the present invention clearer, below in conjunction with embodiment to the present invention
Technical solution carry out clear, complete description.Obviously, described embodiments are some of the embodiments of the present invention, Er Feiquan
Portion's embodiment.Based on the embodiment in invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1：Drilling fluid of the present invention is by following with (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin
Made of the raw material of weight proportion：
The initiator is composition (the i.e. group of ammonium persulfate, three kinds of sodium hydrogensulfite, azodiisobutyronitrile raw materials
Close, or perhaps mixture), ammonium persulfate, sodium hydrogensulfite, azodiisobutyronitrile weight ratio be 1: 1.5: 1.5.
The preparation method of the drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin includes following technique
Step：1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl is added in reaction kettle by above-mentioned weight proportion
Propane sulfonic acid is slowly heated to 60 DEG C, opens stirring (stir speed (S.S.) is 75~90r/min), adds initiator (i.e. persulfuric acid
Ammonium, sodium hydrogensulfite, azodiisobutyronitrile) aqueous solution polymerization reaction, polymerization reaction time 2.5h are carried out, temperature is 60 DEG C,
Finally by solution dries pulverizing, powder is obtained, drying temperature is 50 DEG C；2. preparing (resistance to) high-temperature salt-resistant fluid loss additive：It will be above-mentioned
Gum resin, dimethyl diallyl ammonium chloride, the polyvinyl alcohol of weight proportion are added in the powder, are then mixed
Uniformly (stir speed (S.S.) is 75~90r/min), products therefrom is drilling fluid (resistance to) high-temperature salt-resistant fluid loss additive modified gum
Resin.
Embodiment 2：Drilling fluid of the present invention is by following weight with high-temperature salt-resistant fluid loss additive modified gum resin
Made of the raw material of proportioning：
The initiator is ammonium persulfate, the composition of two kinds of raw materials of sodium hydrogensulfite (is combined, or perhaps mixed
Object), the weight ratio of ammonium persulfate and sodium hydrogensulfite is 1: 1.5.
The drilling fluid is comprised the technical steps that with the preparation method of high-temperature salt-resistant fluid loss additive modified gum resin：
1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl-prop sulphurs is added in reaction kettle by above-mentioned weight proportion
Acid is slowly heated to 65 DEG C, opens stirring (stir speed (S.S.) is 70~80r/min), adds initiator (i.e. ammonium persulfate, Asia
Niter cake) aqueous solution polymerization reaction, polymerization reaction time 2.5h are carried out, temperature is 65 DEG C, finally by solution dries pulverizing,
Powder is obtained, drying temperature is 55 DEG C；2. preparing high-temperature salt-resistant fluid loss additive：By the gum resin of above-mentioned weight proportion (i.e. Ah
Draw primary resin glue), dimethyl diallyl ammonium chloride, polyvinyl alcohol be added in the powder, be then mixed evenly and (stir
It is 70~80r/min to mix rate), products therefrom is drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin.
Embodiment 3：Drilling fluid of the present invention is by following weight with high-temperature salt-resistant fluid loss additive modified gum resin
Made of the raw material of proportioning：
The initiator is the composition of two kinds of ammonium persulfate, azodiisobutyronitrile raw materials, ammonium persulfate and azo two
The weight ratio of isobutyronitrile is 1: 2.
The drilling fluid is comprised the technical steps that with the preparation method of high-temperature salt-resistant fluid loss additive modified gum resin：
1. aqueous solution polymerization：Clear water, acrylamide, 2- acrylamide -2- methyl-prop sulphurs is added in reaction kettle by above-mentioned weight proportion
Acid is slowly heated to 70 DEG C, opens stirring (stir speed (S.S.) is 50~65r/min), adds initiator (i.e. ammonium persulfate, idol
Nitrogen bis-isobutyronitrile) aqueous solution polymerization reaction, polymerization reaction time 2h are carried out, temperature is 70 DEG C, finally by solution dries pulverizing,
Powder is obtained, drying temperature is 60 DEG C；2. preparing high-temperature salt-resistant fluid loss additive：By the gum resin of above-mentioned weight proportion, diformazan
Base diallyl ammonium chloride, polyvinyl alcohol are added in the powder, be then mixed evenly (stir speed (S.S.) be 50~65r/
Min), products therefrom is drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin.
Above-mentioned gum resin is commercial goods (its trade name is unique), main component：Arabia gum glue, can
To buy the gum resin produced by Jinan Zhi Hengzhiyuan Chemical Industry Science Co., Ltd, address：Jinan City, Shandong Province Lixia District work
No. 96 Shandong in the industry South Road areas Chemical market A 004.
It is the test portion of the present invention below：
The oilfield exploitation of the drilling fluid of the present invention applicable different operating modes of high-temperature salt-resistant fluid loss additive modified gum resin
Drilling fluid system.Dosage in drilling fluid system is depending on actual drilling geology condition, the geological conditions of different blocks
The difference for determining (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin dosage, such as in China Eastern Margin of Ordos Basin coal seam
During pneumatic drill well, the dosage of high-temperature salt-resistant fluid loss additive modified gum resin is generally 4%~8% (weight percent).Table 1
For (more than) (resistance to) high-temperature salt-resistant fluid loss additive modified gum resin property measurement result for preparing of each embodiment.
High-temperature salt-resistant fluid loss additive modified gum resin property measurement result prepared by 1 each embodiment of table
As shown in Table 1：(resistance to) high-temperature salt-resistant fluid loss additive modified gum resin prepared by various embodiments of the present invention can reach
To the good impact of performance.Compared with the lubricant for having relevant solid kind, (the above various embodiments) of the invention is manufactured into
This all reduces 20% or more.
(resistance to) high-temperature salt-resistant fluid loss additive modified gum resin of the present invention has below compared with the prior art beneficial to effect
Fruit：(1) the high-temperature salt-resistant fluid loss additive modified gum resin, in fresh water, brine, saturated brine and CaCl2In drilling fluid
With preferable filtrate reducing effect.The filter loss for remaining to control drilling fluid after 180 DEG C of superhigh temperature agings well, embodies
Good temperature resistance, salt resistance and anticalcium performance adapt to complicated drilling condition, have good temperature-resistant anti-salt performance and anticalcium
Invade ability；(2) the high-temperature salt-resistant fluid loss additive modified gum resin preparation process is simple, and easy to implement, production cost is low；
(3) it can slowly degrade naturally under the high-temperature salt-resistant fluid loss additive modified gum non-toxic, harmless, natural conditions, it can be very well
Protection oil-gas Layer.
In conclusion the present invention solves in present drilling process, fluid loss additive temperature-resistant anti-salt performance is poor, production cost is high,
The problem of complex process, while the high-temperature salt-resistant fluid loss additive modified gum resin has stronger biological degradability, effectively drops
The low pollution to reservoir.
Claims (9)
1. a kind of drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin, it is characterised in that it is matched by following weight
Made of raw material：
The drilling fluid is comprised the technical steps that with the preparation method of high-temperature salt-resistant fluid loss additive modified gum resin：1. water
Polymerisation in solution：Clear water, acrylamide, 2- acrylamide-2-methyl propane sulfonics is added in reaction kettle by above-mentioned weight proportion, delays
It is slow to be heated to 60 DEG C~70 DEG C, stirring to be opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time is 2~
2.5h, temperature are 60 DEG C~70 DEG C, finally by solution dries pulverizing, obtain powder, drying temperature is 50 DEG C~60 DEG C；2. preparing
High-temperature salt-resistant fluid loss additive：The gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol of above-mentioned weight proportion are added to
It in the powder, is then mixed evenly, products therefrom is drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin.
2. drilling fluid according to claim 1 high-temperature salt-resistant fluid loss additive modified gum resin, it is characterised in that above-mentioned
Initiator be combination that ammonium persulfate, sodium hydrogensulfite, one or more of azodiisobutyronitrile are formed with arbitrary proportion
Object.
3. drilling fluid according to claim 1 high-temperature salt-resistant fluid loss additive modified gum resin, it is characterised in that it is
Made of the raw material matched following weight：
The initiator be ammonium persulfate, three kinds of sodium hydrogensulfite, azodiisobutyronitrile raw materials composition, ammonium persulfate,
Sodium hydrogensulfite, azodiisobutyronitrile weight ratio be 1: 1.5: 1.5；
The drilling fluid is comprised the technical steps that with the preparation method of high-temperature salt-resistant fluid loss additive modified gum resin：1. water
Polymerisation in solution：Clear water, acrylamide, 2- acrylamide-2-methyl propane sulfonics is added in reaction kettle by above-mentioned weight proportion, delays
It is slow to be heated to 60 DEG C, stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 2.5h, temperature
It is 60 DEG C, finally by solution dries pulverizing, obtains powder, drying temperature is 50 DEG C；2. preparing high-temperature salt-resistant fluid loss additive：It will be upper
The gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol for stating weight proportion are added in the powder, and then mixing is stirred
It mixes uniformly, products therefrom is drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin.
4. drilling fluid according to claim 1 high-temperature salt-resistant fluid loss additive modified gum resin, it is characterised in that it is
Made of the raw material matched following weight：
The initiator is the composition of two kinds of ammonium persulfate, sodium hydrogensulfite raw materials, ammonium persulfate and sodium hydrogensulfite
Weight ratio is 1: 1.5；
The drilling fluid is comprised the technical steps that with the preparation method of high-temperature salt-resistant fluid loss additive modified gum resin：1. water
Polymerisation in solution：Clear water, acrylamide, 2- acrylamide-2-methyl propane sulfonics is added in reaction kettle by above-mentioned weight proportion, delays
It is slow to be heated to 65 DEG C, stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 2.5h, temperature
It is 65 DEG C, finally by solution dries pulverizing, obtains powder, drying temperature is 55 DEG C；2. preparing high-temperature salt-resistant fluid loss additive：It will be upper
The gum resin, dimethyl diallyl ammonium chloride, polyvinyl alcohol for stating weight proportion are added in the powder, and then mixing is stirred
It mixes uniformly, products therefrom is drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin.
5. drilling fluid according to claim 1 high-temperature salt-resistant fluid loss additive modified gum resin, it is characterised in that it is
Made of the raw material matched following weight：
The initiator is the composition of two kinds of ammonium persulfate, azodiisobutyronitrile raw materials, ammonium persulfate and two isobutyl of azo
The weight ratio of nitrile is 1: 2；
The drilling fluid is comprised the technical steps that with the preparation method of high-temperature salt-resistant fluid loss additive modified gum resin：1. water
Polymerisation in solution：Clear water, acrylamide, 2- acrylamide-2-methyl propane sulfonics is added in reaction kettle by above-mentioned weight proportion, delays
It is slow to be heated to 70 DEG C, stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 2h, temperature is
70 DEG C, finally by solution dries pulverizing, powder is obtained, drying temperature is 60 DEG C；2. preparing high-temperature salt-resistant fluid loss additive：It will be above-mentioned
Gum resin, dimethyl diallyl ammonium chloride, the polyvinyl alcohol of weight proportion are added in the powder, are then mixed
Uniformly, products therefrom is drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin.
6. the drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin according to claims 1 or 2 or 3 or 4 or 5,
It is characterized in that 1. middle stir speed (S.S.) is 50~100r/min to above-mentioned step, 2. middle stir speed (S.S.) is 50~100r/min to step.
7. a kind of drilling fluid described in claim 1 preparation method of high-temperature salt-resistant fluid loss additive modified gum resin, special
Sign is that it is comprised the technical steps that：1. aqueous solution polymerization：Clear water, acryloyl are added in reaction kettle by above-mentioned weight proportion
Amine, 2- acrylamide-2-methyl propane sulfonics are slowly heated to 60 DEG C~70 DEG C, open stirring, and it is water-soluble to add initiator progress
Liquid polymerisation, polymerization reaction time are 2~2.5h, and temperature is 60 DEG C~70 DEG C, finally by solution dries pulverizing, obtains powder
End, drying temperature are 50 DEG C~60 DEG C；2. preparing high-temperature salt-resistant fluid loss additive：By the gum resin of above-mentioned weight proportion, diformazan
Base diallyl ammonium chloride, polyvinyl alcohol are added in the powder, are then mixed evenly, and products therefrom is drilling fluid
With high-temperature salt-resistant fluid loss additive modified gum resin.
8. the drilling fluid according to claim 7 preparation method of high-temperature salt-resistant fluid loss additive modified gum resin, special
Sign is that above-mentioned initiator is ammonium persulfate, sodium hydrogensulfite, one or more of azodiisobutyronitrile with arbitrary proportion
The composition of formation.
9. the drilling fluid according to claim 7 preparation method of high-temperature salt-resistant fluid loss additive modified gum resin, special
Stir speed (S.S.) is 50~100r/min 1. sign is above-mentioned step in, and 2. middle stir speed (S.S.) is 50~100r/min to step.
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| CN113337255B (en) * | 2021-05-31 | 2022-06-10 | 中煤浙江勘测设计有限公司 | Solid-free drilling fluid and preparation method and application thereof |
| CN114181345A (en) * | 2021-11-05 | 2022-03-15 | 中国石油天然气集团有限公司 | Plugging agent, preparation method and application thereof, and drilling fluid |
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Application publication date: 20180928 |