CN110330955A - A kind of nano rubber latex microcrack sealing agent and preparation method thereof - Google Patents
A kind of nano rubber latex microcrack sealing agent and preparation method thereof Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—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 an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—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 an aromatic carbocyclic ring
- C08F212/34—Monomers containing two or more unsaturated aliphatic radicals
- C08F212/36—Divinylbenzene
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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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
- C09K8/50—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
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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Abstract
The invention discloses a kind of nano rubber latex microcrack sealing agents and preparation method thereof, are related to drilling fluid additive technical field.It is characterized in that: a kind of nano rubber latex microcrack sealing agent, the component including following parts by weight: acrylate monomer: 15-45 parts；Crosslinking agent: 1-5 parts；Vinyl monomer: 40-50 parts；Cosolvent: 100-200 parts；Sorbitan monooleate: 1-5 parts；Lauryl sodium sulfate: 2-8 parts；Initiator: 5-10 parts；Water: 100-450 parts；Bentonite: 40-50 parts.The nano rubber latex microcrack sealing agent for being formulated preparation through the invention has the advantages that high sealing ratiod, low filtration loss and raising borehole wall drilling well are stable.
Description
Technical field
The present invention relates to drilling fluid additive technical fields, more specifically, it relates to which a kind of nano rubber latex fine fisssure seams
Blocking agent and preparation method thereof.
Background technique
For drill-in fluid in implementing drilling process, high temperature and high pressure filter loss is excessive easily to cause cave-in, filter cake to thicken, even
The down hole problems such as differential sticking occur, seriously affect engineering construction progress.Usually country's mud monitoring standard regulation scene
Drill-in fluid high temperature and pressure dehydration control is qualified within 15mL, but further controls the high temperature and high pressure filter loss of drilling fluid undoubtedly
Wellbore stability can more effectively be maintained, reduce underground complex accident occurrence probability.
Oil base drilling fluid has many advantages, such as that strong inhibition capability, contamination resistance are strong, lubricity is good, but in shale formation, due to
The presence of microcrack easily causes borehole well instability, therefore to reinforce the seal-off effect of oil base drilling fluid, achievees the purpose that safety drilling.
A large amount of research work has been done in terms of improving oil base drilling fluid seal-off effect by the country at present, but study in microcrack closure compared with
It is few.
It is, therefore, desirable to provide a kind of new scheme solves the above problems.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of nano rubber latex microcrack closure
Agent has the advantages that high sealing ratiod, low filtration loss and raising borehole wall drilling well are stable.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of nano rubber latex microcrack sealing agent, the component including following parts by weight:
Acrylate monomer: 15-45 parts；
Crosslinking agent: 1-5 parts；
Vinyl monomer: 40-50 parts；
Cosolvent: 100-200 parts；
Sorbitan monooleate: 1-5 parts；
Lauryl sodium sulfate: 2-8 parts；
Initiator: 5-10 parts；
Water: 100-450 parts；
Bentonite: 40-50 parts.
Causing by using above-mentioned technical proposal using vinyl monomer, acrylate monomer as reaction monomers and raw material
Polymerization reaction is carried out under the conditions of agent etc. and generates drill-in fluid sealing agent, and partial size is nanoscale, and thermal stability is good, hence it is evident that can reduce
Filter loss, sealing ratiod can reach 100%, be suitable for microcrack, fine and close plugged zone can be formed in microcrack surfaces, to mention
High borehole wall stability.
By the way that bentonite is added, reaction monomers are sent out under the catalytic action of initiator on bentonitic surface and interlayer
Raw to polymerize and be grafted to obtain macromolecular chain, when in use, wherein bentonite molecule has the characteristics that expansion to obtained sealing agent, from
And amplify the plugging action of sealing agent.
Bentonite after grafting has the characteristics that hydrophilic and oleophilic, stably dispersing, sealing agent obtained are added to drill-in fluid
In after, under the action of existing due to the bentonite of stably dispersing, sealing agent can disperse with additives other in drilling fluid
Uniformly, the plugging effect of drilling fluid is improved.
In addition, the bentonite after grafting is added in drilling fluid, the dispersion performance and drilling fluid of drilling fluid can be improved
Storage-stable avoid delaying the duration to can mention when drilling well and a few days ago configure drilling fluid.
Further preferably, the acrylic monomers is using in methyl methacrylate, ethyl acrylate, butyl acrylate
One kind.
Further preferably, the crosslinking agent uses Diacetone Acrylamide, n,N-Dimethylformamide and N, N- dihydroxy
One of ethyl long chain fatty acids amides are a variety of.
Further preferably, the vinyl monomer is using in 4- methyl styrene, divinylbenzene, α-methylstyrene
One kind.
Further preferably, the cosolvent uses one of acetone, isopropanol and butyl acetate or a variety of.
Further preferably, the initiator is using one of potassium peroxydisulfate, azobisisoheptonitrile and ammonium sulfate.
The purpose of the present invention two is to provide a kind of preparation method of nano rubber latex microcrack sealing agent, using party's legal system
Standby nano rubber latex microcrack sealing agent has the advantages that high sealing ratiod, low filtration loss and raising borehole wall drilling well are stable.
To achieve the above object two, the present invention provides the following technical scheme that
A kind of preparation method of nano rubber latex microcrack sealing agent, comprising the following steps:
Sorbitan monooleate, acrylate monomer, vinyl monomer and cosolvent are mixed into oil by step 1
Phase, by lauryl sodium sulfate, crosslinking agent is soluble in water that oil is added in water phase while stirring at water phase, is stablized
Pre-emulsion；
Bentonite is added in pre-emulsion and is stirred dissolution by step 2, and by mixed system carry out ultrasonic treatment 10~
15min obtains lotion；
Step 3 takes in a part of lotion investment reaction kettle, and temperature rises to 80~90 DEG C, in the condition that revolving speed is 100r/min
Under, part initiator is added dropwise and carries out 20~30min of reaction；
Remaining lotion and initiator is added in step 4, continues 1.5~2h of stirring, discharges, and filtering obtains nano rubber latex fine fisssure
Seam blocking agent.
By using above-mentioned technical proposal, the sealing agent obtained using above-mentioned preparation method, particle dispersibility is preferable, shape
Shape rule, granularity is more uniform, and thermal stability is good, and the slow pressure transfer effect of resistance is significant, can significantly improve sealing ratiod.
Further preferably, in step 1, the stirring rate be 3000~4000r/min, mixing time be 0.5~
1h。
By using above-mentioned technical proposal, under high speed shear effect, oil is added in water phase, is capable of forming oil-in-water
Lotion ultimately forms stable pre-emulsion by the shear time of 0.5~1h, and when subsequent reactions, initiator, which is added, can make lotion
Whole quick and complete reaction, the productivity of product are higher.
Further preferably, the partial size of the nano rubber latex microcrack sealing agent is 150~300nm.
In conclusion compared with prior art, the invention has the following advantages:
(1) using vinyl monomer, acrylate monomer as reaction monomers and raw material, polymerization reaction is carried out under the conditions ofs initiator etc.
Drill-in fluid sealing agent is generated, partial size is nanoscale, and thermal stability is good, hence it is evident that can reduce filter loss, sealing ratiod can reach
100%, it is particularly suitable for the mud shale microcrack with extremely low permeability and minimum pore throat size, it can be in microcrack surfaces shape
At fine and close plugged zone, borehole wall stability is improved；
(2) by the way that bentonite is added, reaction monomers occur under the catalytic action of initiator on bentonitic surface and interlayer
It polymerize and is grafted to obtain macromolecular chain, when in use, wherein bentonite molecule has the characteristics that expansion to obtained sealing agent, thus
Amplify the plugging action of sealing agent；In addition, the bentonite after grafting is added in drilling fluid, the dispersibility of drilling fluid can be improved
The storage-stable of energy and drilling fluid avoids delaying the duration to can mention when drilling well and a few days ago configure drilling fluid；
(3) nano rubber latex microcrack sealing agent prepared by the present invention is Nano grade and deformable polymer beads, Neng Goujin
Enter into borehole wall microcrack hole, by adsorbing, building bridge and deformable filling effect, constantly sedimentation, filling, compacting, the company of being formed
Continuous fine and close plugged zone can hinder slow pressure transmitting and invade with filtrate, enhance the stability of the borehole wall.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart of nano rubber latex microcrack sealing agent in the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.It is worth noting that wherein being not specified specific
Condition person, lower according to conventional conditions or manufacturer's recommended conditions to carry out, reagents or instruments used without specified manufacturer,
For the conventional products that can be obtained by commercially available purchase.
Embodiment 1: a kind of nano rubber latex microcrack sealing agent, each component and its corresponding parts by weight are as shown in table 1, and
Acquisition is made by the steps:
Sorbitan monooleate, methyl methacrylate, 4- methyl styrene and acetone are mixed into oil by step 1
Phase, lauryl sodium sulfate, Diacetone Acrylamide is soluble in water at water phase, under the speed conditions of 3000r/min, while stirring
It mixes side oil is added in water phase, mixing time 1h obtains stable pre-emulsion；
Bentonite is added in pre-emulsion and is stirred dissolution, and mixed system is carried out ultrasonic treatment 15min by step 2,
Obtain lotion；
Step 3 takes the lotion of one third to put into reaction kettle, and temperature rises to 80 DEG C, in the condition that revolving speed is 100r/min
Under, the potassium peroxydisulfate that one third is added dropwise carries out reaction 30min；
Remaining lotion and potassium peroxydisulfate is added in step 4, continues to stir 2h, discharge, filtering, obtain average grain diameter 150~
Nano rubber latex microcrack sealing agent between 300nm.
Embodiment 2-6: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that, each component and its
Corresponding parts by weight are as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-6 of table
Embodiment 7: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 1, by 1 part of sorbitan monooleate, 15 parts of ethyl acrylates, 40 parts of 4- methyl styrenes and 100 parts of acetone
It is mixed into oily phase, 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase, in 3000r/
Under the speed conditions of min, oil is added in water phase while stirring, mixing time 1h obtains stable pre-emulsion；
Remaining is same as Example 1.
Embodiment 8: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 1, by 1 part of sorbitan monooleate, 15 parts of butyl acrylates, 40 parts of 4- methyl styrenes and 100 parts of acetone
It is mixed into oily phase, 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase, in 3000r/
Under the speed conditions of min, oil is added in water phase while stirring, mixing time 1h obtains stable pre-emulsion；
Remaining is same as Example 1.
Embodiment 9: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of divinylbenzenes and 100 part third
Ketone is mixed into oily phase, and 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase, in 3000r/
Under the speed conditions of min, oil is added in water phase while stirring, mixing time 1h obtains stable pre-emulsion；
Remaining is same as Example 1.
Embodiment 10: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of α-methylstyrenes and 100 parts
Acetone is mixed into oily phase, and 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase,
Under the speed conditions of 3000r/min, oil is added in water phase while stirring, mixing time 1h, obtains stable pre- cream
Liquid；
Remaining is same as Example 1.
Embodiment 11: step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl
Styrene, 50 parts of acetone and 50 parts of isopropanols are mixed into oily phase, by 2 parts of lauryl sodium sulfate, 1 part of diacetone acrylamide acyl
Amine is soluble in water to be while stirring added to oil in water phase under the speed conditions of 3000r/min at water phase, mixing time
For 1h, stable pre-emulsion is obtained；
Remaining is same as Example 1.
Embodiment 12: step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl
Styrene, 33 parts of acetone, 33 parts of isopropanols and 33 parts of butyl acetates are mixed into oily phase, by 2 parts of lauryl sodium sulfate, 1
Part Diacetone Acrylamide is soluble in water is added to water for oil while stirring under the speed conditions of 3000r/min at water phase
Xiang Zhong, mixing time 1h obtain stable pre-emulsion；
Remaining is same as Example 1.
Embodiment 13: step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl
Styrene and 100 parts of acetone are mixed into oily phase, by 2 parts of lauryl sodium sulfate, 0.5 part of Diacetone Acrylamide, 0.5 part
N,N-Dimethylformamide is soluble in water to be added to water for oil while stirring under the speed conditions of 3000r/min at water phase
Xiang Zhong, mixing time 1h obtain stable pre-emulsion；
Remaining is same as Example 1.
Embodiment 14: step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl
Styrene and 100 parts of acetone are mixed into oily phase, by 2 parts of lauryl sodium sulfate, 0.3 part of Diacetone Acrylamide, 0.3 part
N,N-Dimethylformamide, 0.3 part of N, N- dihydroxy ethyl long chain fatty acids amides are soluble in water at water phase, 3000r/min's
Under speed conditions, oil is added in water phase while stirring, mixing time 1h obtains stable pre-emulsion；
Remaining is same as Example 1.
Embodiment 15: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 3 takes the lotion of one third to put into reaction kettle, and temperature rises to 80 DEG C, in the condition that revolving speed is 100r/min
Under, 1.6 parts of azobisisoheptonitrile are added dropwise and carry out reaction 30min；
Remaining lotion and 3.4 parts of azobisisoheptonitrile is added in step 4, continues to stir 2h, discharge, and filtering obtains average grain
Nano rubber latex microcrack sealing agent of the diameter between 150~300nm；
Remaining is same as Example 1.
Embodiment 16: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 3 takes the lotion of one third to put into reaction kettle, and temperature rises to 80 DEG C, in the condition that revolving speed is 100r/min
Under, 1.6 parts of ammonium sulfate are added dropwise and carry out reaction 30min；
Remaining lotion and 3.4 parts of ammonium sulfate is added in step 4, continues to stir 2h, discharge, and filtering obtains average grain diameter 150
Nano rubber latex microcrack sealing agent between~300nm；
Remaining is same as Example 1.
Embodiment 17: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl styrenes and 100 parts
Acetone is mixed into oily phase, and 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase,
Under the speed conditions of 3500r/min, oil is added in water phase while stirring, mixing time 1h, obtains stable pre- cream
Liquid；
Remaining is same as Example 1.
Embodiment 18: a kind of nano rubber latex microcrack sealing agent, difference from example 1 is that:
Step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl styrenes and 100 parts
Acetone is mixed into oily phase, and 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase,
Under the speed conditions of 4000r/min, oil is added in water phase while stirring, mixing time 1h, obtains stable pre- cream
Liquid；
Remaining is same as Example 1.
Comparative example 1: a kind of sealing agent is made by following steps:
Step 1, by 1 part of sorbitan monooleate, 15 parts of methyl methacrylates, 40 parts of 4- methyl styrenes and 100 parts
Acetone is mixed into oily phase, and 2 parts of lauryl sodium sulfate, 1 part of Diacetone Acrylamide is soluble in water at water phase,
Under the speed conditions of 3000r/min, oil is added in water phase while stirring, mixing time 1h, obtains stable pre- cream
Liquid；
Step 2 takes the lotion of one third to put into reaction kettle, and temperature rises to 80 DEG C, in the condition that revolving speed is 100r/min
Under, 1.6 parts of potassium peroxydisulfates are added dropwise and carry out reaction 30min；
Remaining lotion and potassium peroxydisulfate is added in step 3, continues to stir 2h, discharge, and filtering obtains sealing agent；
Itself difference from example 1 is that, bentonite is not added in sealing agent preparation process.
Performance test
Drilling fluid is prepared according to GB/T 5005-2010 standard, is divided into 20 parts, wherein 19 parts of drilling fluids add implementation respectively
The sealing agent prepared in the nano rubber latex microcrack sealing agent and comparative example 1 prepared in example 1-18, remaining 1 part of drilling fluid do not add
Sealing agent.
Sealing ratiod, filter loss and profit are carried out respectively to 20 parts of drilling fluids according to " SY/T5060-93 " and industry relevant criterion
Sliding coefficient test, wherein filter loss uses main body for internal diameter 76.2mm, and the filtration device of the tubular drilling fluid cup of height 64mm carries out
Measurement, time interval 30min；Greasy property is measured using FANN extreme boundary lubrication instrument and sticking coefficient analyzer NF-2,
Test result is shown in Table 2.
As shown in Table 2, there is high envelope using nano rubber latex microcrack sealing agent made from inventive formulation and preparation method
The characteristics of stifled rate, low filtration loss and high stability.
2 the performance test results of table
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of nano rubber latex microcrack sealing agent, which is characterized in that the component including following parts by weight:
Acrylate monomer: 15-45 parts；
Crosslinking agent: 1-5 parts；
Vinyl monomer: 40-50 parts；
Cosolvent: 100-200 parts；
Sorbitan monooleate: 1-5 parts；
Lauryl sodium sulfate: 2-8 parts；
Initiator: 5-10 parts；
Water: 100-450 parts；
Bentonite: 40-50 parts.
2. nano rubber latex microcrack sealing agent according to claim 1, which is characterized in that the acrylic monomers uses first
One of base methyl acrylate, ethyl acrylate, butyl acrylate.
3. nano rubber latex microcrack sealing agent according to claim 1, which is characterized in that the crosslinking agent uses diacetone
Acrylamide, N,N-dimethylformamide and N, one of N- dihydroxy ethyl long chain fatty acids amides or a variety of.
4. nano rubber latex microcrack sealing agent according to claim 1, which is characterized in that the vinyl monomer uses 4-
One of methyl styrene, divinylbenzene, α-methylstyrene.
5. nano rubber latex microcrack sealing agent according to claim 1, which is characterized in that the cosolvent using acetone,
One of isopropanol and butyl acetate are a variety of.
6. nano rubber latex microcrack sealing agent according to claim 1, which is characterized in that the initiator uses persulfuric acid
One of potassium, azobisisoheptonitrile and ammonium sulfate.
7. a kind of preparation method of nano rubber latex microcrack sealing agent, which comprises the following steps:
Sorbitan monooleate, acrylate monomer, vinyl monomer and cosolvent are mixed into oil by step 1
Phase, by lauryl sodium sulfate, crosslinking agent is soluble in water that oil is added in water phase while stirring at water phase, is stablized
Pre-emulsion；
Bentonite is added in pre-emulsion and is stirred dissolution by step 2, and by mixed system carry out ultrasonic treatment 10~
15min obtains lotion；
Step 3 takes in a part of lotion investment reaction kettle, and temperature rises to 80~90 DEG C, in the condition that revolving speed is 100r/min
Under, part initiator is added dropwise and carries out 20~30min of reaction；
Remaining lotion and initiator is added in step 4, continues 1.5~2h of stirring, discharges, and filtering obtains nano rubber latex fine fisssure
Seam blocking agent.
8. the preparation method of nano rubber latex microcrack sealing agent according to claim 7, which is characterized in that in step 1,
The stirring rate is 3000~4000r/min, and mixing time is 0.5~1h.
9. the preparation method of nano rubber latex microcrack sealing agent according to claim 7, which is characterized in that the nanometre glue
The partial size of newborn microcrack sealing agent is 150~300nm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564393A (en) * | 2019-08-08 | 2019-12-13 | 大庆油田有限责任公司 | Micro-expansion type plugging agent and preparation method thereof |
| CN113444503A (en) * | 2021-08-09 | 2021-09-28 | 中国石油化工集团有限公司 | Drilling wall reinforced rock gas reservoir oil-based high-temperature high-density drilling fluid |
| CN116814227A (en) * | 2022-12-30 | 2023-09-29 | 济源市宏鑫实业有限公司 | Latex plugging agent for drilling fluid and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110564393A (en) * | 2019-08-08 | 2019-12-13 | 大庆油田有限责任公司 | Micro-expansion type plugging agent and preparation method thereof |
| CN110564393B (en) * | 2019-08-08 | 2022-06-10 | 大庆油田有限责任公司 | Micro-expansion type plugging agent and preparation method thereof |
| CN113444503A (en) * | 2021-08-09 | 2021-09-28 | 中国石油化工集团有限公司 | Drilling wall reinforced rock gas reservoir oil-based high-temperature high-density drilling fluid |
| CN116814227A (en) * | 2022-12-30 | 2023-09-29 | 济源市宏鑫实业有限公司 | Latex plugging agent for drilling fluid and preparation method thereof |
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