CN109401734A - Fluid loss additive for boring fluid macromolecule polyester object and preparation method thereof - Google Patents
Fluid loss additive for boring fluid macromolecule polyester object and preparation method thereof Download PDFInfo
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- CN109401734A CN109401734A CN201811225165.3A CN201811225165A CN109401734A CN 109401734 A CN109401734 A CN 109401734A CN 201811225165 A CN201811225165 A CN 201811225165A CN 109401734 A CN109401734 A CN 109401734A
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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
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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
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/04—Anhydrides, e.g. cyclic anhydrides
- C08F222/06—Maleic anhydride
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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Abstract
A kind of fluid loss additive for boring fluid macromolecule polyester object and preparation method thereof, fluid loss additive macromolecule polyester object is made of following raw materials: clear water, acrylic acid, maleic anhydride, potassium hydroxide, initiator, carboxymethyl cellulose, calcium carbonate powder.Preparation method: aqueous solution polymerization prepares copolymer powder, prepares fluid loss additive macromolecule polyester object.Fluid loss additive macromolecule polyester physical performance are as follows: moisture≤10.0%, screen over-size≤12.0%, fresh water starches 150 DEG C of heat rolling 16h rear chamber middle benefit gas filter pressing loss≤15.0ml, 150 DEG C of high temperature and high pressure filter loss≤35.0ml, salt slurries 150 DEG C of heat rollings 16h rear chamber middle benefit gas filter pressing loss≤20.0ml, 150 DEG C of high temperature and high pressure filter loss≤40.0ml.The present invention solves the problems, such as in present drilling process that fluid loss additive heat and salinity tolerance performance is poor, high production cost, complex process, while it 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 fluid loss additive for boring fluid macromolecule polyester object.
The invention further relates to the preparation methods of the fluid loss additive for boring fluid macromolecule polyester object.
Background technique
As industrial development is continuously increased oil demand amount, need to develop the petroleum resources for being stored at stratum depths,
To drilling technology, more stringent requirements are proposed for this.Deep-well, ultradeep well, horizontal well, in extended reach well operation since fluid loss additive is anti-
Temperature and the bad caused drilling fluid system filter loss of anti-salt property are excessive, and borehole wall stability is poor and may cause underground complexity feelings
Condition occurs.And market often uses fluid loss additive effect in well not significant at present, it is difficult to meet drilling well needs；Traditional drilling fluid materials
It is difficult to degrade, reservoir can be caused significantly to pollute, influence the exploitation yield of later period oil/gas well.
Inventor retrieves following Patents documents: CN106854259A discloses a kind of water-base drilling fluid filtrate reducing
Agent and preparation method thereof, the preparation method comprises the following steps: being sequentially added in water in proportion by monomer containing sulfonic group, having containing unsaturated double-bond
Machine silicon monomer, polyanion fiber, adjusting pH are 7-8, react and are made under the conditions of initiator.CN106543367A discloses one
Kind drilling fluid macromolecule salt-resisting high-temperature-resisting fluid loss additive and preparation method thereof, it is characterised in that: the fluid loss additive is by with the following group
Point be prepared, based on parts by weight, the component include: 180~220 parts of distilled water, 15~20 parts of starch, konjaku flour 20~
25 parts, 2~5 parts of sodium hydroxide, 25~30 parts of sodium allylsulfonate, 10~15 parts of DMDAAC, N, N- methylene bisacrylamide acid amide
0.3~0.8 part, 3~10 parts of N- vinylpyrrolidone, 0.5~1.5 part of initiator.CN106590556A discloses a kind of oil field
Drilling fluid is with resisting compound salt water fluid loss additive, it is characterised in that: the oil field drilling fluids resist compound salt water fluid loss additive by following
Raw material is synthesized according to following parts by weight: 20~45 parts of lignite, 4~10 parts of lignocellulosic, 1~3 part of sodium pyrophosphate, water 25~45
Part.CN106634875A discloses a kind of fluid loss additive for boring fluid, includes following components: oily 30~70 parts by weight of phase；It is non-from
Sub- 10~30 parts by weight of surfactant；20~50 parts by weight of nano silica and nanometer calcium carbonate aqueous dispersions.Also provide
The preparation method of the fluid loss additive for boring fluid: nonionic surfactant is mixed with oily Phase Proportion, 20 DEG C~
At 40 DEG C, using magnetic stirring apparatus high-speed stirred 10min~30min, nanometer titanium dioxide then is gradually added into the case where stirring at low speed
Silicon and nanometer calcium carbonate aqueous dispersions, then high-speed stirred 10min~30min to get arrive the fluid loss additive.CN107033280A
It discloses a kind of drilling fluid both sexes heat and salinity tolerance fluid loss additive and preparation method, preparation method is: being added in the reactor
Acrylamide, acrylic acid, olefin sulfonic acid or alkenyl sulfonate, cationic monomer, rigid unitary and deionized water sufficiently dissolve
Afterwards, solution ph is adjusted with sodium hydroxide or potassium hydroxide, pH value is adjusted between 7.5~7.7, dispersing agent is then added,
It is transferred in reaction kettle after being sufficiently mixed, leads to 40~80min of nitrogen deoxygenation, initiator is added and causes polymerization at 14~16 DEG C, and
Molecular weight product, which is adjusted, by molecular weight regulator takes out jelly after reaction to obtain the product of suitable molecular weight,
By polymer prills and carry out that drying is dry, pulverizes and sieves up to the product.
How the above technology is for make fluid loss additive for boring fluid be able to solve fluid loss additive in present drilling process
The problem of heat and salinity tolerance performance difference, while the pollution to reservoir can be effectively reduced in the fluid loss additive, do not provide specific guidance
Scheme.
Summary of the invention
Technical problem to be solved by the present invention lies in, a kind of fluid loss additive for boring fluid macromolecule polyester object is provided, it
It with good filtrate loss controllability, can be used under high temperature, high salt conditions, drilling fluid rheology is good, adapts to complicated brill
Well condition, is conducive to the stabilization of the borehole wall, to solve the problems, such as that fluid loss additive heat and salinity tolerance performance is poor in present drilling process, together
When the fluid loss additive macromolecule polyester object have stronger biological degradability, the pollution to reservoir can be effectively reduced.
For this purpose, another technical problem to be solved by this invention is, a kind of fluid loss additive for boring fluid high score is provided
The preparation method of sub- polyester object.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of fluid loss additive for boring fluid macromolecule polyester object (or perhaps fluid loss additive for boring fluid macromolecule polyester material
Material, or perhaps the macromolecule polyester object as filtrate reducer for drilling fluid, polyester material), its technical solution is that it be by
Following weight matches made of the raw material of (parts by weight, mass fraction):
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 80 DEG C
~90 DEG C, stirring to be opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time is 6~7h (6~7 hours),
Temperature is 80 DEG C~90 DEG C, obtains copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in
It in baking oven, is dried at a temperature of 100 DEG C~120 DEG C, copolymer solution is specifically put in (upper end opening) metal bucket (can also be with
Bucket made from sheet metal) in, or copolymer solution is put in (upper end opening) plastic barrel, then by the metal bucket or
Person's plastic barrel is placed on the indoor shelf of constant temperature of baking oven and dries, and obtains copolymer solids, crushes, obtains copolymer powder
End；3. preparing fluid loss additive macromolecule polyester object: by carboxymethyl cellulose (sodium carboxymethylcellulose), the carbon of above-mentioned weight proportion
Sour calcium powder is added in the copolymer powder, is then mixed evenly, and products therefrom is fluid loss additive for boring fluid
Macromolecule polyester object.
Above-mentioned initiator is one or more of ammonium persulfate, potassium peroxydisulfate, sodium hydrogensulfite with arbitrary proportion shape
At composition.
In above-mentioned technical proposal, preferred technical solution be can be, the step 1. in stirring rate be preferably 50~
100r/min, 3. middle stirring rate is preferably 50~100r/min to step.
In above-mentioned technical proposal, the preferred technical solution may also be that the fluid loss additive for boring fluid polyphosphazene polymer
Ester object is made of the raw material of following weight proportion:
The initiator be ammonium persulfate, three kinds of raw materials of potassium peroxydisulfate and sodium hydrogensulfite composition, ammonium persulfate,
The weight ratio of potassium peroxydisulfate and sodium hydrogensulfite is 1: 2: 2.
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 80
DEG C, stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 7h, temperature is 80 DEG C, is total to
Copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, is dried at a temperature of 100 DEG C
It is dry, copolymer solids are obtained, crushes, obtains copolymer powder；3. preparing fluid loss additive macromolecule polyester object: above-mentioned weight is matched
Carboxymethyl cellulose, the calcium carbonate powder of ratio are added in the copolymer powder, are then mixed evenly, and products therefrom is
For fluid loss additive for boring fluid macromolecule polyester object.
In above-mentioned technical proposal, the preferred technical solution may also be that the fluid loss additive for boring fluid polyphosphazene polymer
Ester object is made of the raw material of following weight proportion:
The initiator is the composition of potassium peroxydisulfate and two kinds of raw materials of sodium hydrogensulfite, potassium peroxydisulfate and bisulfite
The weight ratio of sodium is 1: 0.5.
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 85
DEG C, stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 6.5h, temperature is 85 DEG C, is obtained
Copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, at a temperature of 110 DEG C
Drying, obtains copolymer solids, crushes, obtains copolymer powder；3. preparing fluid loss additive macromolecule polyester object: by above-mentioned weight
Carboxymethyl cellulose, the calcium carbonate powder of proportion are added in the copolymer powder, are then mixed evenly, products therefrom
As fluid loss additive for boring fluid macromolecule polyester object.
In above-mentioned technical proposal, the preferred technical solution may also be that the fluid loss additive for boring fluid polyphosphazene polymer
Ester object is made of the raw material of following weight proportion:
The initiator is ammonium persulfate.
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 90
DEG C, stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 6h, temperature is 90 DEG C, is total to
Copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, is dried at a temperature of 120 DEG C
It is dry, copolymer solids are obtained, crushes, obtains copolymer powder；3. preparing fluid loss additive macromolecule polyester object: above-mentioned weight is matched
Carboxymethyl cellulose, the calcium carbonate powder of ratio are added in the copolymer powder, are then mixed evenly, and products therefrom is
For fluid loss additive for boring fluid macromolecule polyester object.
Fluid loss additive macromolecule polyester object of the invention has reached the good impact of performance, referring to the subsequent table of this specification
1, fluid loss additive macromolecule polyester physical performance of the invention are as follows: moisture≤10.0%, screen over-size≤12.0%, fresh water starch 150 DEG C
Heat rolling 16h rear chamber middle benefit gas filter pressing loss≤15.0ml, 150 DEG C of high temperature and high pressure filter loss≤35.0ml, 150 DEG C of salt slurries hot rollings
16h rear chamber middle benefit gas filter pressing loss≤20.0ml, 150 DEG C of high temperature and high pressure filter loss≤40.0ml.The present invention is passing through 150 DEG C of high temperature
The filter loss for preferably reducing drilling fluid is remained to after aging, has been embodied good temperature resistance and anti-salt property, has been adapted to complexity
Drilling condition has good temperature-resistant anti-salt performance.
Fluid loss additive macromolecule polyester object of the invention has the advantages that (1) described drop compared with the prior art
Fluid loss agents macromolecule polyester object has good filtrate loss controllability, can use that (present invention is resistant to 180 under high temperature, high salt conditions
DEG C high temperature), drilling fluid rheology is good, adapts to complicated drilling condition, is conducive to the stabilization of the borehole wall.(2) filtrate reducing
Agent macromolecule polyester object preparation process is simple, and easy to implement, production cost is low.(3) the fluid loss additive macromolecule polyester object without
It is malicious, harmless, it can slowly degrade naturally under natural conditions, can be well protected oil-gas Layer.
In conclusion the present invention has good filtrate loss controllability, can be used under high temperature, high salt conditions, drilling well liquid stream
Denaturation is good, adapts to complicated drilling condition, is conducive to the stabilization of the borehole wall.The present invention, which solves, drops filter in present drilling process
Lose the problem of agent heat and salinity tolerance performance is poor, high production cost, complex process, at the same the fluid loss additive macromolecule polyester object with compared with
Strong biological degradability effectively reduces the pollution to reservoir.
Specific embodiment
To keep goal of the invention of the invention, technical solution and advantage 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: fluid loss additive for boring fluid macromolecule polyester object of the present invention is the original matched by following weight
Made of material:
The initiator be ammonium persulfate, three kinds of raw materials of potassium peroxydisulfate and sodium hydrogensulfite composition, ammonium persulfate,
The weight ratio of potassium peroxydisulfate and sodium hydrogensulfite is 1: 2: 2.
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 80
DEG C, stirring (stirring rate be 75~90r/min) is opened, initiator is added and carries out aqueous solution polymerization reaction, when polymerization reaction
Between be 7h, temperature be 80 DEG C, obtain copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put
It in baking oven, is dried at a temperature of 100 DEG C, obtains copolymer solids, crushed, (can cross 60 meshes) obtains copolymer powder；
3. preparing fluid loss additive macromolecule polyester object: the carboxymethyl cellulose of above-mentioned weight proportion, calcium carbonate powder being added to described
It in copolymer powder, is then mixed evenly (stirring rate is 75~90r/min), products therefrom is drilling fluid drop filter
Lose agent macromolecule polyester object.
Embodiment 2: fluid loss additive for boring fluid macromolecule polyester object of the present invention is the original matched by following weight
Made of material:
The initiator is the composition of potassium peroxydisulfate and two kinds of raw materials of sodium hydrogensulfite, potassium peroxydisulfate and bisulfite
The weight ratio of sodium is 1: 0.5.
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 85
DEG C, stirring (stirring rate be 70~80r/min) is opened, initiator is added and carries out aqueous solution polymerization reaction, when polymerization reaction
Between be 6.5h, temperature be 85 DEG C, obtain copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained
It is put in baking oven, is dried at a temperature of 110 DEG C, obtain copolymer solids, crush, (can cross 60 meshes) obtains copolymer powder
End；3. preparing fluid loss additive macromolecule polyester object: the carboxymethyl cellulose of above-mentioned weight proportion, calcium carbonate powder are added to institute
It states in copolymer powder, is then mixed evenly (stirring rate is 70~80r/min), products therefrom is drilling fluid drop
Fluid loss agents macromolecule polyester object.
Embodiment 3: fluid loss additive for boring fluid macromolecule polyester object of the present invention is the original matched by following weight
Made of material:
The initiator is ammonium persulfate.
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution
Polymerization: clear water, acrylic acid, maleic anhydride, potassium hydroxide are added in reaction kettle by above-mentioned weight proportion, is slowly heated to 90
DEG C, stirring (stirring rate be 50~65r/min) is opened, initiator is added and carries out aqueous solution polymerization reaction, when polymerization reaction
Between be 6h, temperature be 90 DEG C, obtain copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put
It in baking oven, is dried at a temperature of 120 DEG C, obtains copolymer solids, crushed, (can cross 60 meshes) obtains copolymer powder；
3. preparing fluid loss additive macromolecule polyester object: the carboxymethyl cellulose of above-mentioned weight proportion, calcium carbonate powder being added to described
It in copolymer powder, is then mixed evenly (stirring rate is 50~65r/min), products therefrom is drilling fluid drop filter
Lose agent macromolecule polyester object.
The following are test portions of the invention:
The oilfield exploitation wellbore fluid of the applicable different operating conditions of fluid loss additive for boring fluid macromolecule polyester object of the invention
System.Dosage (dosage) in drilling fluid system depending on actual drilling geology condition, determine by the geological conditions of different blocks
Determine the difference of fluid loss additive macromolecule polyester object dosage, such as during China's Eastern Margin of Ordos Basin CBM Drilling,
The dosage of fluid loss additive macromolecule polyester object is generally 2%~4% (weight percent).Fluid loss additive is high in embodiment 1,2,3
The dosage of molecule polyester object is 3%.Table 1 be (more than) the fluid loss additive macromolecule polyester physical performance of each embodiment preparation measures knot
Fruit.
The fluid loss additive macromolecule polyester physical performance measurement result of each embodiment of table 1 preparation
As shown in Table 1: the fluid loss additive macromolecule polyester object of various embodiments of the present invention preparation can reach good performance
Effect.Compared with having relevant fluid loss additive, the manufacturing cost of (the above various embodiments) of the invention all reduces 20% or more.
Fluid loss additive macromolecule polyester object of the invention has the advantages that (1) described drop compared with the prior art
Fluid loss agents macromolecule polyester object has good filtrate loss controllability, and the present invention is resistant to 180 DEG C of high temperature, and (at 180 DEG C, its performance is surveyed
It is still good to determine result), it can be used under high temperature, high salt conditions, and drilling fluid rheology is good, adapt to complicated drilling well item
Part is conducive to the stabilization of the borehole wall；(2) the fluid loss additive macromolecule polyester object preparation process is simple, easy to implement, production cost
It is low；(3) the fluid loss additive macromolecule polyester object is nontoxic, harmless, can slowly degrade, can be well protected naturally under natural conditions
Oil-gas Layer.
In conclusion the present invention solve poor fluid loss additive heat and salinity tolerance performance in present drilling process, high production cost,
The problem of complex process, while the fluid loss additive macromolecule polyester object has stronger biological degradability, effectively reduces to storage
The pollution of layer.
Claims (9)
1. a kind of fluid loss additive for boring fluid macromolecule polyester object, it is characterised in that it is made of the raw material that following weight matches
:
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution is poly-
Close: clear water, acrylic acid, maleic anhydride, potassium hydroxide being added in reaction kettle by above-mentioned weight proportion, be slowly heated to 80 DEG C~
90 DEG C, open stirring, add initiator carry out aqueous solution polymerization reaction, polymerization reaction time be 6~7h, temperature be 80 DEG C~
90 DEG C, obtain copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, 100
DEG C~120 DEG C at a temperature of dry, obtain copolymer solids, crush, obtain copolymer powder；3. preparing fluid loss additive polyphosphazene polymer
Ester object: the carboxymethyl cellulose of above-mentioned weight proportion, calcium carbonate powder are added in the copolymer powder, and then mixing is stirred
It mixes uniformly, products therefrom is fluid loss additive for boring fluid macromolecule polyester object.
2. fluid loss additive for boring fluid macromolecule polyester object according to claim 1, it is characterised in that above-mentioned initiator
The composition formed for one or more of ammonium persulfate, potassium peroxydisulfate, sodium hydrogensulfite with arbitrary proportion.
3. fluid loss additive for boring fluid macromolecule polyester object according to claim 1, it is characterised in that it is by following heavy
Made of the raw material for measuring proportion:
The initiator is the composition of three kinds of ammonium persulfate, potassium peroxydisulfate and sodium hydrogensulfite raw materials, ammonium persulfate, over cure
The weight ratio of sour potassium and sodium hydrogensulfite is 1: 2: 2；
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution is poly-
It closes: clear water, acrylic acid, maleic anhydride, potassium hydroxide being added in reaction kettle by above-mentioned weight proportion, is slowly heated to 80 DEG C,
Stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 7h, temperature is 80 DEG C, is copolymerized
Object solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, is dried at a temperature of 100 DEG C,
Copolymer solids are obtained, crushes, obtains copolymer powder；3. preparing fluid loss additive macromolecule polyester object: by above-mentioned weight proportion
Carboxymethyl cellulose, calcium carbonate powder be added in the copolymer powder, be then mixed evenly, products therefrom is
Fluid loss additive for boring fluid macromolecule polyester object.
4. fluid loss additive for boring fluid macromolecule polyester object according to claim 1, it is characterised in that it is by following heavy
Made of the raw material for measuring proportion:
The initiator is the composition of potassium peroxydisulfate and two kinds of raw materials of sodium hydrogensulfite, potassium peroxydisulfate and sodium hydrogensulfite
Weight ratio is 1: 0.5；
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution is poly-
It closes: clear water, acrylic acid, maleic anhydride, potassium hydroxide being added in reaction kettle by above-mentioned weight proportion, is slowly heated to 85 DEG C,
Stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 6.5h, temperature is 85 DEG C, is total to
Copolymer solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, is dried at a temperature of 110 DEG C
It is dry, copolymer solids are obtained, crushes, obtains copolymer powder；3. preparing fluid loss additive macromolecule polyester object: above-mentioned weight is matched
Carboxymethyl cellulose, the calcium carbonate powder of ratio are added in the copolymer powder, are then mixed evenly, and products therefrom is
For fluid loss additive for boring fluid macromolecule polyester object.
5. fluid loss additive for boring fluid macromolecule polyester object according to claim 1, it is characterised in that it is by following heavy
Made of the raw material for measuring proportion:
The initiator is ammonium persulfate；
The preparation method of the fluid loss additive for boring fluid macromolecule polyester object comprises the technical steps that: 1. aqueous solution is poly-
It closes: clear water, acrylic acid, maleic anhydride, potassium hydroxide being added in reaction kettle by above-mentioned weight proportion, is slowly heated to 90 DEG C,
Stirring is opened, initiator is added and carries out aqueous solution polymerization reaction, polymerization reaction time 6h, temperature is 90 DEG C, is copolymerized
Object solution；2. preparing copolymer powder: 1. copolymer solution that step is obtained is put in baking oven, is dried at a temperature of 120 DEG C,
Copolymer solids are obtained, crushes, obtains copolymer powder；3. preparing fluid loss additive macromolecule polyester object: by above-mentioned weight proportion
Carboxymethyl cellulose, calcium carbonate powder be added in the copolymer powder, be then mixed evenly, products therefrom is
Fluid loss additive for boring fluid macromolecule polyester object.
6. fluid loss additive for boring fluid macromolecule polyester object described according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that
1. middle stirring rate is 50~100r/min to above-mentioned step, and 3. middle stirring rate is 50~100r/min to step.
7. a kind of preparation method of fluid loss additive for boring fluid macromolecule polyester object described in claim 1, it is characterised in that it
It comprises the technical steps that: clear water, acrylic acid, maleic acid 1. aqueous solution polymerization: being added in reaction kettle by above-mentioned weight proportion
Acid anhydride, potassium hydroxide are slowly heated to 80 DEG C~90 DEG C, open stirring, add initiator and carry out aqueous solution polymerization reaction, polymerization
Reaction time is 6~7h, and temperature is 80 DEG C~90 DEG C, obtains copolymer solution；2. preparing copolymer powder: 1. step is obtained
Copolymer solution be put in baking oven, dried at a temperature of 100 DEG C~120 DEG C, obtain copolymer solids, crush, be copolymerized
Object powder；3. preparing fluid loss additive macromolecule polyester object: the carboxymethyl cellulose of above-mentioned weight proportion, calcium carbonate powder are added
It into the copolymer powder, is then mixed evenly, products therefrom is fluid loss additive for boring fluid macromolecule polyester object.
8. the preparation method of fluid loss additive for boring fluid macromolecule polyester object according to claim 7, it is characterised in that on
The initiator stated is the composition that one or more of ammonium persulfate, potassium peroxydisulfate, sodium hydrogensulfite are formed with arbitrary proportion.
9. the preparation method of fluid loss additive for boring fluid macromolecule polyester object according to claim 7, it is characterised in that on
1. middle stirring rate is 50~100r/min to the step of stating, and 3. middle stirring rate is 50~100r/min to step.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669481A (en) * | 2019-10-22 | 2020-01-10 | 石家庄华莱鼎盛科技有限公司 | Salt-resistant filtrate reducer modified gum resin for drilling fluid |
| CN114133578A (en) * | 2021-12-30 | 2022-03-04 | 石家庄华莱鼎盛科技有限公司 | Filtrate reducer carboxyl hydroxyl modified polyester for drilling fluid |
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| CN114133578A (en) * | 2021-12-30 | 2022-03-04 | 石家庄华莱鼎盛科技有限公司 | Filtrate reducer carboxyl hydroxyl modified polyester for drilling fluid |
| CN114133578B (en) * | 2021-12-30 | 2022-06-10 | 石家庄华莱鼎盛科技有限公司 | Filtrate reducer carboxyl hydroxyl modified polyester for drilling fluid |
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