CN107033860A - A kind of potassium chloride polymer drilling fluid - Google Patents
A kind of potassium chloride polymer drilling fluid Download PDFInfo
- Publication number
- CN107033860A CN107033860A CN201710295908.3A CN201710295908A CN107033860A CN 107033860 A CN107033860 A CN 107033860A CN 201710295908 A CN201710295908 A CN 201710295908A CN 107033860 A CN107033860 A CN 107033860A
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- Prior art keywords
- potassium chloride
- drilling fluid
- chloride polymer
- polymer drilling
- loss additive
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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
-
- 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
- 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
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
Abstract
The invention discloses a kind of potassium chloride polymer drilling fluid, including 1 4% bentonite, 0.3 0.5% sodium hydroxide, 5 30% potassium chloride, 0 20% sodium chloride, 1 4% multiple-effect fluid loss additive, 2 4% sealing agent, 0.5 2% lubricant, 20 200% inertia heavy weight additive；Described multiple-effect fluid loss additive is that graphite oxide and sepiolite are polymerized with organic acid monomer and non-ionic monomer in the presence of initiator；The characteristics of potassium chloride polymer drilling fluid has high temperature resistance, good rheology, low leak-off, good lubrication, high inhibition, can maintain wellbore stability and prevent bit balling, it is adaptable to the drilling of bad ground.
Description
Technical field
The present invention relates to petroleum gas field, more particularly to a kind of potassium chloride polymer drilling fluid.
Background technology
As world energy sources increase in demand and drilling technique develop, Present Global oil-gas exploration and development is just from conventional oil gas reservoir
To hyposmosis, unconventional development, develop from land to ocean, from shallow-layer to deep layer, ultra deep development, oil-gas exploration and development difficulty
Constantly increase, faces increasing technological challenge.How " safe, quick, environmentally friendly, efficient " to creep into, drop to greatest extent
Low drilling cost turns into the developing direction of drilling technology, while the sight of " the drill in fluid system engineering technology " gradually formed
Read, indicate that Completion Fluid research and application enter a brand-new developing stage.Drilling fluid is the blood of drilling well,
It is the determinant of relation drilling well especially deep drilling success or failure and quality.High performance water-based drilling fluid technology is recognized always
To be the important symbol of drilling liquid technology or even drilling well level height.Develop additive for drilling fluid and the drilling fluid of function admirable
System, is the matter of utmost importance that drilling well faces under current complex geological condition.Under the new situation, drilling engineering is carried to drilling liquid technology
Gone out it is higher, more fully require, traditional water-base drilling fluid performance need major tuneup raising.
The content of the invention
It is an object of the invention to provide a kind of potassium chloride polymer drilling fluid, the drilling fluid has high temperature resistance, good rheology, low
The characteristics of leak-off, good lubrication, high inhibition.
The present invention is achieved through the following technical solutions：
A kind of potassium chloride polymer drilling fluid, includes 1-4% bentonite, 0.3-0.5% sodium hydroxides, 5-30% chlorine
Change potassium, 0-20% sodium chloride, 1-4% multiple-effect fluid loss additive, 2-4% sealing agent, 0.5-2% lubricant, 20-
200% inertia heavy weight additive and water, the content of above each component is in terms of the quality of water.
What described multiple-effect fluid loss additive was made up of the raw material including following mass parts：
The graphite oxide and sepiolite are pre-processed respectively through organic acid monomer, then institute is made with non-ionic monomer copolymerization
State multiple-effect fluid loss additive.
Described sepiolite mesh number is 300-1000 mesh, preferably 500-800 mesh.
Described organic acid monomer is selected from following any one or two or more mixtures：Acrylic acid, methacrylic acid,
Itaconic acid, maleic acid, allyl sulphonic acid, methallylsulfonic acid, 2- acrylamide-2-methyl propane sulfonics, 2- acryloxies-
2- methyl propane sulfonic acids, acryloyl-oxy fourth sulfonic acid, 2- acrylamide -2- Phenyl-ethanesulfonic acids and 2- acrylamide dodecyl sodium sulfonates.
Described non-ionic monomer is selected from following any one or two or more mixtures：Acrylamide, N, N- diformazans
Base acrylamide, NIPA and acrylonitrile.
Described multiple-effect fluid loss additive is adopted to be made with the following method：
(1) described graphite oxide is slowly added into deionized water while stirring, and ultrasonic disperse 1 hour, then
Organic acid monomer is added, stirring obtains solution A；
(2) under conditions of high-speed stirred, described sepiolite is slowly added into deionized water, high-speed stirred, and
After add organic acid monomer, high-speed stirred obtains solution B；
(3) solution B is added into solution A, stirs 1 hour, then add non-ionic monomer, stirred；
(4) appropriate NaOH, regulation pH value of water solution to 9-11 are added；
(5) 60-70 DEG C is heated to, under nitrogen protection, initiator is slowly added to, reacts 4-6 hours, obtain glue；
(6) dry, crush, obtain described potassium chloride polymer drilling fluid multiple-effect fluid loss additive；
The mass parts of the multiple-effect fluid loss additive each component raw material are as follows：
Described initiator is selected from following any one or two or more mixtures：Ammonium persulfate, potassium peroxydisulfate, azo
Diisobutyl amidine dihydrochloride.
Due to being pre-processed using organic acid to graphite oxide and sepiolite surface, therefore, compared to conventional thing
Reason is puddled, and what graphite oxide and sepiolite were distributed in described multiple-effect fluid loss additive strand is more uniformly distributed；And compared to list
One graphite oxide/polymeric articles and sepiolite/polymeric articles, described multiple-effect fluid loss additive using organic acid and it is non-from
Sub- monomer realizes the combination of graphite oxide and sepiolite, and the graphite oxide of nano-scale and the sepiolite of micron-scale can
Realize that various dimensions are blocked, realize " Synergistic " with the space network that polymer molecular chain is collectively forming and " build bridge and seal
It is stifled ".On the one hand, polymer molecular chain can play a part of protecting glue in drilling fluid, and scattered clay particle makes mud cake more fine and close,
Reduce filter loss；On the other hand, during mud cake is formed, the layered graphite oxide of nano-scale, the sepiolite of micron-scale
Fiber can be built bridge in mud cake hole, and polymer molecular chain is then wedged in gap, further block filter cake micropore, reduction filter
Vector；Meanwhile, the nanoscale layered graphite oxide in described multiple-effect fluid loss additive can increase the free volume of strand, play
The effect of lubrication and viscosity reduction, reaches the purpose of " one multiple-effect ".
Described sealing agent is at least one of sulfonated gilsonite, oxidized asphalt, bitumen, emulsified asphalt.
Described lubricant is at least one in mineral oil, vegetable oil, polymeric alcohol, plastic beads, glass microballoon, graphite
Kind.
Described inertia heavy weight additive is at least one of detailed catalogue calcium, barite, Iron Ore Powder.
Beneficial effects of the present invention are that the multiple-effect fluid loss additive that the potassium chloride polymer drilling fluid is used has filtrate reducing, envelope
Stifled, lubrication multiple efficacies, can reduce the use of sealing agent and lubricant, be compared with traditional potassium chloride polymer drilling fluid, be bored
Well liquid system formulation is simplified；Because multiple-effect fluid loss additive has good temperature resistance, greasy property and relatively low viscosity effect,
Therefore the characteristics of drilling fluid of the present invention has high temperature resistance, good rheology, low leak-off, good lubrication, high inhibition, it is adaptable to bad ground
Drilling.
Embodiment
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Institute
It is conventional method unless otherwise instructed to state method.In following each embodiments, drilling fluid each component content in terms of the quality of water,
Part is mass fraction described in multiple-effect fluid loss additive synthetic method.The reactant unless otherwise instructed can be from open business
Approach and obtain.
Embodiment 1
A kind of potassium chloride polymer drilling fluid that the present invention is provided, including water and 1% swelling in terms of the quality of water
Soil, 0.3% sodium hydroxide, 5% potassium chloride, 20% sodium chloride, 1% multiple-effect fluid loss additive, 3% sulfonated gilsonite, 1%
White oil and 100% blanc fixe and water, the content of above each component is in terms of the quality of water.
The preparation method of the multiple-effect fluid loss additive is as follows：
30 parts of deionized waters are added in the four-hole bottle equipped with mechanical agitator, 1 part of oxygen is then slowly added to while stirring
Ultrasonic disperse 1 hour under graphite, 500W power, then adds 5 parts of acrylic acid, and stirs 2 hours, obtains A；Stirred in height in cup
35 parts of deionized waters are added, then under 11000rpm rotating speeds, the sepiolite of 1 part of 500 mesh are slowly added to, and continue high-speed stirred
1 hour, 5 parts of acrylic acid are then added, stirs 2 hours, obtains B；B is added in A, and stirred 1 hour；Add 13 parts of acryloyls
Amine, is stirred 1 hour；Add appropriate NaOH, regulation pH value of water solution to 9；60 DEG C are heated to, under nitrogen protection, is slowly added to
0.05 part of ammonium persulfate, reacts 4 hours, obtains glue；Drying, crushing, obtain multiple-effect fluid loss additive.
Embodiment 2
A kind of potassium chloride polymer drilling fluid that the present invention is provided, including water and 3% swelling in terms of the quality of water
Soil, 0.5% sodium hydroxide, 30% potassium chloride, 3% multiple-effect fluid loss additive, 4% oxidized asphalt, 2% polymeric alcohol,
10% detailed catalogue calcium and 20% blanc fixe.
The preparation method of the multiple-effect fluid loss additive is as follows：
38 parts of deionized waters are added in the four-hole bottle equipped with mechanical agitator, 5 parts of oxygen are then slowly added to while stirring
Ultrasonic disperse 1 hour under graphite, 500W power, then adds 9 parts of methacrylic acids, and stirs 2 hours, obtains solution A；
Height stirs 39 parts of deionized waters of addition in cup, then under 11000rpm rotating speeds, is slowly added to the sepiolite of 5 part of 500 mesh, and continue
High-speed stirred 1 hour, then adds 9 parts of methacrylic acids, stirs 1 hour, obtains solution B；Solution B is added in solution A, and
Stirring 1 hour；5 parts of N,N-DMAAs are added, are stirred 1 hour；Add appropriate NaOH, regulation pH value of water solution to
11；60 DEG C are heated to, under nitrogen protection, 1 part of ammonium persulfate is slowly added to, reacts 4 hours, obtain glue；Drying, crushing, are obtained
To multiple-effect fluid loss additive.
Embodiment 3
A kind of potassium chloride polymer drilling fluid that the present invention is provided, including water and 4% swelling in terms of the quality of water
Soil, 0.5% sodium hydroxide, 10% potassium chloride, 4% multiple-effect fluid loss additive, 1% sulfonated gilsonite, 1% polymeric alcohol,
100% blanc fixe and 100% Iron Ore Powder.
The preparation method of the multiple-effect fluid loss additive is as follows：
32 parts of deionized waters are added in the four-hole bottle equipped with mechanical agitator, 5 parts of oxygen are then slowly added to while stirring
Ultrasonic disperse 1 hour under graphite, 500W power, then adds 7 parts of maleic acids, and stirs 1 hour, obtains solution A；Stirred in height
30 parts of deionized waters are added in cup, then under 11000rpm rotating speeds, the sepiolite of 4 part of 700 mesh are slowly added to, and continued at a high speed
Stirring 1 hour, then adds 7 parts of maleic acids, stirs 1 hour, obtains solution B；Solution B is added in solution A, and it is small to stir 1
When；15 parts of acrylonitrile are added, are stirred 1 hour；Add appropriate NaOH, regulation pH value of water solution to 9；It is heated to 70 DEG C, nitrogen
Under protection, 0.3 part of azo diisobutyl amidine dihydrochloride is slowly added to, reacts 5 hours, obtains glue；Drying, crushing, are obtained
Multiple-effect fluid loss additive.
Table 1 is potassium chloride polymer drilling fluid Evaluation results of the present invention, tests drilling fluid of the present invention under high temperature
Rheological property, fluid loss additive performance and greasy property.
The potassium chloride polymer drilling fluid performance of table 1.
As it can be seen from table 1 drilling fluid of the present invention has excellent performance, with the increase of multiple-effect addition of filtrate reducer,
In the case of sealing agent and the reduction of lubricant dosage, system can still keep relatively low filter loss and less lube system
Number；No matter density height, the flow pattern of drilling fluid system is preferable, and the viscosity and shear force of aging fore-and-aft architecture change smaller, body
Good high-temperature stability is showed.
Claims (9)
1. a kind of potassium chloride polymer drilling fluid, including 1-4% bentonite, 0.3-0.5% sodium hydroxides, 5-30% chlorination
Potassium, 0-20% sodium chloride, 1-4% multiple-effect fluid loss additive, 2-4% sealing agent, 0.5-2% lubricant, 20-200%
Inertia heavy weight additive and water, the content of above each component is in terms of the quality of water, it is characterised in that：
What described multiple-effect fluid loss additive was made up of the raw material including following mass parts：
The graphite oxide and sepiolite pre-process respectively through organic acid monomer, then are made described many with non-ionic monomer copolymerization
Imitate fluid loss additive.
2. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described sealing agent drips for sulfonation
At least one of green grass or young crops, oxidized asphalt, bitumen, emulsified asphalt.
3. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described lubricant be mineral oil,
At least one of vegetable oil, polymeric alcohol, plastic beads, glass microballoon, graphite.
4. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described inertia heavy weight additive is detailed catalogue
At least one of calcium, barite, Iron Ore Powder.
5. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described sepiolite mesh number is 300-
1000 mesh, preferably 500-800 mesh.
6. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described organic acid monomer is selected from down
State any one or two or more mixtures：Acrylic acid, methacrylic acid, itaconic acid, maleic acid, allyl sulphonic acid, methyl
Allyl sulphonic acid, 2- acrylamide-2-methyl propane sulfonics, 2- acryloxy -2- methyl propane sulfonic acids, acryloyl-oxy fourth sulfonic acid,
2- acrylamide -2- Phenyl-ethanesulfonic acids and 2- acrylamide dodecyl sodium sulfonates.
7. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described non-ionic monomer is selected from down
State any one or two or more mixtures：Acrylamide, N, N- DMAAs, NIPA and third
Alkene nitrile.
8. potassium chloride polymer drilling fluid according to claim 1, it is characterised in that described multiple-effect fluid loss additive is used
Following method is made：
(1) described graphite oxide is slowly added into deionized water while stirring, and ultrasonic disperse 1 hour, then add
Organic acid monomer, stirs 1-2 hours, obtains A；
(2) under conditions of high-speed stirred, described sepiolite is slowly added into deionized water, high-speed stirred 1 hour, and
After add organic acid monomer, high-speed stirred 1 hour obtains B；
(3) B is added into A, stirred 1 hour, then add non-ionic monomer, stirred 1 hour and form C；
(4) appropriate NaOH, regulation pH value of water solution to 9-11 are added into C；60-70 DEG C is heated to, under nitrogen protection, slowly
Initiator is added, reacts 4-6 hours, obtains glue；Drying, crushing, obtain described potassium chloride polymer drilling fluid multiple-effect
Fluid loss additive；
The mass parts of the multiple-effect fluid loss additive each component raw material are as follows：
9. potassium chloride polymer drilling fluid according to claim 8, described initiator be selected from it is following any one or two
Plant the mixture of the above：Ammonium persulfate, potassium peroxydisulfate, azo diisobutyl amidine dihydrochloride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710295908.3A CN107033860A (en) | 2017-04-28 | 2017-04-28 | A kind of potassium chloride polymer drilling fluid |
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| CN201710295908.3A CN107033860A (en) | 2017-04-28 | 2017-04-28 | A kind of potassium chloride polymer drilling fluid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233761A (en) * | 2018-11-09 | 2019-01-18 | 西南石油大学 | Modified Thermo-sensitive NIPAM bentonite and temperature response type drilling fluid |
| CN112175153A (en) * | 2019-07-05 | 2021-01-05 | 中国石油化工股份有限公司 | High-molecular polymer and preparation method and application thereof |
| CN112322262A (en) * | 2020-12-16 | 2021-02-05 | 新疆华油能源工程服务有限公司 | Anti-drag anti-sticking drilling fluid and preparation method thereof |
| CN114686183A (en) * | 2020-12-25 | 2022-07-01 | 中石化石油工程技术服务有限公司 | Lubricating plugging fluid loss additive for drilling fluid and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233761A (en) * | 2018-11-09 | 2019-01-18 | 西南石油大学 | Modified Thermo-sensitive NIPAM bentonite and temperature response type drilling fluid |
| CN112175153A (en) * | 2019-07-05 | 2021-01-05 | 中国石油化工股份有限公司 | High-molecular polymer and preparation method and application thereof |
| CN112175153B (en) * | 2019-07-05 | 2022-12-27 | 中国石油化工股份有限公司 | High-molecular polymer and preparation method and application thereof |
| CN112322262A (en) * | 2020-12-16 | 2021-02-05 | 新疆华油能源工程服务有限公司 | Anti-drag anti-sticking drilling fluid and preparation method thereof |
| CN114686183A (en) * | 2020-12-25 | 2022-07-01 | 中石化石油工程技术服务有限公司 | Lubricating plugging fluid loss additive for drilling fluid and preparation method thereof |
| CN114686183B (en) * | 2020-12-25 | 2023-09-12 | 中石化石油工程技术服务有限公司 | Lubricating plugging filtrate reducer for drilling fluid and preparation method thereof |
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