CN115404052A - Composite plugging agent for oil-based drilling fluid - Google Patents
Composite plugging agent for oil-based drilling fluid Download PDFInfo
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- CN115404052A CN115404052A CN202110575747.XA CN202110575747A CN115404052A CN 115404052 A CN115404052 A CN 115404052A CN 202110575747 A CN202110575747 A CN 202110575747A CN 115404052 A CN115404052 A CN 115404052A
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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
- 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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/36—Water-in-oil emulsions
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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
- C09K8/42—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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- 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
- C09K8/42—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
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/04—Hulls, shells or bark containing well drilling or treatment fluids
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/18—Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The composite plugging agent for the oil-based drilling fluid comprises the following raw materials in parts by weight: 45-60 parts of rigid bridging particles; 15-25 parts of rigid sheet material; 2-5 parts of a reticular flexible fiber material; 10-15 parts of oleophylic deformable material; 5 to 10 parts of viscoelastic deformation material. Wherein the netted flexible fiber material is soft in texture but not agglomerated, good in dispersibility, good in size adaptability with the leakage layer, easy to enter the leakage passage and reside, and the accumulated compressed volume can be greatly reduced, and the blocking layer can be more compact. The oleophylic deformation material and the viscoelastic deformation material are partially dissolved in diesel oil, part of the oleophylic deformation material and the viscoelastic deformation material are swelled to maintain elastic deformation performance, and the oleophylic deformation material and the viscoelastic deformation material enter gaps between the plugging layers after deformation and are bonded together, so that the plugging layers are more compact. And the rigid bridging particles, the rigid flaky material, the reticular flexible fiber material, the oleophylic deformable material and the viscoelastic deformable material generate a synergistic effect, so that different crack sizes can be blocked, the blocking layer is stable and durable, the stratum bearing capacity can be effectively improved, and the possibility of leakage recovery is reduced.
Description
Technical Field
The invention relates to the technical field of drilling plugging, in particular to a composite plugging agent for an oil-based drilling fluid.
Background
In the process of developing No. 1 fracture zone and No. 5 fracture zone of the first-zone fractured-solution oil reservoir along the north, the temperature of the Ordovician limestone formation is high, the formation is corroded, holes and cracks develop and are broken seriously, the collapse and the block are easy to happen, the drilling risk is high, and sidetracking is caused for many times. The anti-collapse effect is excellent by adopting the oil-based drilling fluid technology. However, in the application process, the limestone fracture stratum is easy to leak, the field leakage-proof and plugging technology and the material adaptability are insufficient, and the application effect is not ideal. Because the oil-based drilling fluid has higher cost, if the problem of the leakage of the oil-based drilling fluid cannot be solved, the popularization and the application of the oil-based drilling fluid are greatly limited.
The invention discloses a plugging agent for oil-based drilling fluid and a preparation method thereof, which are disclosed in Chinese patent with publication number CN105936819A, and the invention name "plugging agent for oil-based drilling fluid and preparation method", wherein the plugging agent for oil-based drilling fluid is formed by chemical reaction and physical mixing, is composed of copolymer obtained by copolymerizing three monomers of alkenyl benzene, acrylic ester and acrylic acid and oleophilic type hard inorganic material, and has the same plastic deformation characteristic as asphalt plugging agents. The patent document with the publication number of CN111303845A entitled "preparation method and application of plugging agent while drilling" for oil-based drilling fluid discloses that the plugging agent consists of 20-30% of oil-wet flaky material, 5-10% of rigid particle material, 40-60% of oil-absorbing expansion type particle material and 10-25% of oil-wet composite fiber material, has higher compressive strength and shear resistance, and can deform and fill cracks in stratum. The publication No. CN104388067A describes a composite leak-proof agent for an oil-based drilling fluid, which comprises 40-50 parts by weight of spherical gel, 20-30 parts by weight of rigid material, 0-20 parts by weight of flexible fiber and 5-10 parts by weight of expanded graphite, and has good compatibility with the oil-based drilling fluid and improved mud cake performance. The paper 'development and application of spherical gel composite plugging agent' published in the journal oil drilling technology by Liu Wentang et al 2016 discloses a spherical gel composite plugging agent suitable for shale gas geological characteristics and oil-based drilling fluid characteristics, which consists of nano-micron spherical gel, rigid particles, sheet materials and mineral fibers, can greatly reduce the permeability of a high-temperature high-pressure filter cake, has good compatibility, can plug microporous microcracks while drilling, and effectively reduces the loss of the oil-based drilling fluid. "leak-stopping agent for oil-based drilling fluid and action mechanism research", published in davit 2014 of southwest university of petroleum, discloses a leak-stopping formula for oil-based drilling fluid, which researches the action and principle of the material in plugging long wedge-shaped cracks and rough wall cracks by matching the researched LCC resin type leak-stopping material with walnut shells, hydrophobic asphalt particles and fiber materials and in a single type and compound type mode. An experimental study on a shale gas formation oil-based drilling fluid leakage prevention technology published by the chenchen dawn of 2017 of the university of petroleum in China discloses a micro-nano material plugging agent suitable for a shale gas formation, which consists of rigid particles, elastic particles, micro fibers, softening particles, high-friction particles and SD-OS (sodium dodecyl benzene sulfonate), wherein the SD-OS of an expansion type plugging material polymerized by acrylate monomers can resist the temperature of 200 ℃, can be extruded into surrounding rock of a well wall through deformation, and continues to absorb oil and expand to realize effective compact pressure-bearing plugging. The research and system construction of the oil-based drilling fluid treating agent published in 2018 by Tang-Guoswang of the Chinese geological university discloses a drilling-following plugging material for an oil-based drilling fluid, which has reasonable particle size distribution, good temperature resistance, a breakthrough pressure as high as 13MPa and an oil absorption expansion rate as high as 200.27 percent and can effectively solve the problem of permeability loss of the oil-based drilling fluid. The leak-stopping agent while drilling, the composite leak-stopping agent and the rigid leak-stopping agent are compounded, so that the problem of 1mm-3mm crack leakage can be effectively solved. However, the plugging material of the oil-based drilling fluid has certain defects and shortcomings: 1) The components are single, and the formula composition or the grain size grading is unreasonable, so that the adaptability to a leakage channel is insufficient, and a deformation filling material with good adaptability is lacked; 2) The residence property of the fiber material is insufficient or the fiber material is easy to agglomerate, so that the residence efficiency of the plugging material is influenced; 3) The deformation material which plays a role of cementing under the oil phase environment is lacked, the plugging material is cemented together to form a compact plugging layer, and the occurrence of the re-leakage situation is reduced. .
Disclosure of Invention
The invention provides a composite plugging agent for oil-based drilling fluid, which is prepared by compounding rigid bridging particles, a rigid flaky material, a reticular flexible fiber material, an oleophylic deformation material and a viscoelastic deformation material. The plugging agent is convenient to prepare on site, safe and simple to operate, has little pollution to drilling fluid and environment, has wide material sources, and meets the requirement of site plugging.
The technical scheme of the invention is as follows:
the composite plugging agent for the oil-based drilling fluid comprises the following raw materials in parts by weight: 45-60 parts of rigid bridging particles; 15-25 parts of rigid sheet material; 2-5 parts of a reticular flexible fiber material; 10-15 parts of oleophylic deformable material; 5-10 parts of viscoelastic deformation material.
Preferably, the rigid bridging particles have a particle size range of 0.05-2 mm and comprise one or two of industrial coal slag powder, calcite or calcium carbonate. The industrial coal slag powder, calcite or calcium carbonate is used as bridging particles in the plugging agent, and has high compressive strength and strong bridging capability.
Preferably, the rigid sheet material has a particle size range of 20-60 meshes of a standard sample separation sieve, and comprises one or two of shell residues, mica sheets or clam shell residues. The shell slag, the mica sheets and the clam shell slag have good dispersibility in the leakage stoppage slurry and stable physicochemical properties, and are flaky, so that the shell slag, the mica sheets and the clam shell slag are easy to turn over and clamp a throat along with the flowing of drilling fluid in a leakage passage, and the residence performance is excellent.
Preferably, the mesh-like flexible fiber material has a size range of 8-20 meshes of a standard sample separation sieve, and comprises EPE polyethylene foam or EPS foam polystyrene. The reticular flexible fiber material is soft in texture but not agglomerated, has good dispersibility and good adaptability to the size of a leakage layer, is easy to enter a leakage channel and reside, and provides conditions for the subsequent packing material accumulation.
Preferably, the EPE polyethylene foam or EPS foam polystyrene has an expansion ratio of 20 to 50 times.
Preferably, the oleophylic deformable material has a particle size of 0.5-1 mm, and comprises natural asphalt, mineral asphalt or modified asphalt.
Preferably, the oleophilic deformation material has a softening point of 150 ℃. Before the softening point is not reached, the oleophylic deformable material can be partially dissolved under the conditions of the underground oil phase environment and the temperature, has the deformation filling capacity, and can well fill gaps or pores formed by bridging and plugging, so that the plugging layer is more compact.
Preferably, the particle size of the viscoelastic deformation material ranges from 0.5mm to 2mm, and the viscoelastic deformation material comprises one or two of polypropylene and ethylene propylene diene monomer blended polymer particles, polyamide and ethylene propylene diene monomer blended polymer particles. In the oil-based drilling fluid, along with the increase of the depth of a stratum or along with the increase of the temperature, the viscoelastic deformation material can be partially swelled and partially dissolved, so that the viscoelastic property is enhanced, the plugging layer can be deformed and filled, and the compactness of the plugging layer is improved.
Compared with the prior art, the invention has the advantages that: the composite plugging agent for the oil-based drilling fluid is prepared by compounding rigid bridging particles, a rigid flaky material, a net-shaped flexible fiber material, an oleophylic deformation material and a viscoelastic deformation material according to a certain ratio. Wherein the netted flexible fiber material texture is soft but not conglomeration, and the dispersibility is good, and is good with leak layer size adaptability, easily gets into the leakage passageway and resides, piles up for follow-up filler material and provides the condition, and piles up the pressurized volume and can reduce greatly, and the shutoff layer can be compacter. The oleophylic deformation material and the viscoelastic deformation material are partially dissolved in diesel oil, partially swell to keep elastic deformation performance, enter gaps between plugging layers after deformation and are bonded together, so that the plugging layers are more compact. And the rigid bridging particles, the rigid flaky material, the reticular flexible fiber material, the oleophylic deformation material and the viscoelastic deformation material generate a synergistic effect, so that different crack sizes can be blocked, and particularly, a leakage channel with the size not more than 2mm can be blocked. Through the gradual filling and compacting effects of the rigid bridging particles and the rigid sheet material, the retention effect of the net-shaped flexible fiber material and the bonding and cementing effect of the deformation material, a compact blocking layer is formed, the blocking layer is stable and durable, the stratum bearing capacity can be effectively improved, and the re-leakage possibility is reduced. The composite plugging agent for the oil-based drilling fluid is convenient to prepare on site, is safe and simple to operate, only needs to directly place the rigid bridging particles, the rigid flaky materials, the reticular flexible fiber materials, the oleophylic deformation materials and the viscoelastic deformation materials which are compounded and mixed in the oil-based drilling fluid, has small pollution to the drilling fluid and the environment, has wide material sources, and meets the requirement of site plugging.
Detailed Description
In order that the invention may be more readily understood, reference will now be made in detail to the following examples.
Example 1
The composite plugging agent 1 for the oil-based drilling fluid comprises 45 parts of rigid bridging particles, 25 parts of rigid flaky materials, 5 parts of meshed flexible materials, 10 parts of oleophylic deformation materials and 10 parts of viscoelastic deformation materials.
Example 2
The composite plugging agent 2 for the oil-based drilling fluid comprises 50 parts of rigid bridging particles, 20 parts of rigid flaky materials, 5 parts of meshed flexible materials, 10 parts of oleophylic deformation materials and 10 parts of viscoelastic deformation materials.
Example 3
The composite plugging agent 3 for the oil-based drilling fluid comprises 60 parts of rigid bridging particles, 15 parts of rigid flaky materials, 5 parts of meshed flexible materials, 10 parts of oleophylic deformation materials and 10 parts of viscoelastic deformation materials.
Example 4
The composite plugging agent 4 for the oil-based drilling fluid comprises 60 parts of rigid bridging particles, 20 parts of rigid flaky materials, 5 parts of meshed flexible materials, 15 parts of oleophylic deformation materials and 10 parts of viscoelastic deformation materials.
Example 5
The composite plugging agent 5 for the oil-based drilling fluid comprises 50 parts of rigid bridging particles, 15 parts of rigid flaky materials, 2 parts of meshed flexible materials, 15 parts of oleophylic deformation materials and 8 parts of viscoelastic deformation materials.
Example 6
And (3) evaluating the performance of the composite plugging agents 1 to 5 for the oil-based drilling fluid obtained in the embodiments 1 to 5.
Preparing oil-based plugging base slurry, wherein the plugging base slurry comprises the following components in percentage by weight: 400mL of diesel oil, 100mL of calcium chloride solution with the calcium chloride content of 20%, 10g of main emulsifier, 10g of auxiliary emulsifier, 20g of organic soil, 10g of calcium oxide and 350g of barite; wherein the main emulsifier and the auxiliary emulsifier are fatty acid amide emulsifiers with different polymerization ratios and structures, are from Yihua chemical industry Co Ltd of Ringqiu city, have the emulsification rate of more than or equal to 95 percent and the densities of 0.8-1.0 g/cm 3 (ii) a Barite is from processing plant of Huashuo mineral in Lingshan county, with fineness of 325 mesh and density of 4.2g/cm 3 。
And respectively placing 1-5 composite plugging agents for the oil-based drilling fluid into the oil-based plugging base slurry to prepare the plugging slurry.
And (3) putting 75g of the composite plugging agent 1 for the oil-based drilling fluid into 300mL of the oil-based plugging base slurry, and preparing to obtain the plugging slurry 1 with the composite plugging agent concentration of 25% for the oil-based drilling fluid.
90g of the composite plugging agent 2 for the oil-based drilling fluid is placed in 300mL of the oil-based plugging base slurry, and the plugging slurry 2 with the composite plugging agent concentration of 30% for the oil-based drilling fluid is prepared.
105g of the composite plugging agent 3 for the oil-based drilling fluid is placed in 300mL of the oil-based plugging base slurry, and the plugging slurry 3 with the composite plugging agent concentration of 35% for the oil-based drilling fluid is prepared.
And (3) placing 75g of the composite plugging agent 1 for the oil-based drilling fluid into 300mL of the oil-based plugging base slurry to prepare a plugging slurry 4 with the concentration of the composite plugging agent for the oil-based drilling fluid of 25%.
90g of the composite plugging agent 3 for the oil-based drilling fluid is placed in 300mL of the oil-based plugging base slurry, and the plugging slurry 5 with the composite plugging agent concentration of 30% for the oil-based drilling fluid is prepared.
105g of the composite plugging agent 4 for the oil-based drilling fluid is placed in 300mL of the oil-based plugging base slurry, and the plugging slurry 6 with the composite plugging agent concentration of 35 percent for the oil-based drilling fluid is prepared.
And (3) placing 75g of the composite plugging agent 2 for the oil-based drilling fluid into 300mL of the oil-based plugging base slurry to prepare a plugging slurry 7 with the concentration of the composite plugging agent for the oil-based drilling fluid being 25%.
90g of the composite plugging agent 3 for the oil-based drilling fluid is placed in 300mL of the oil-based plugging base slurry, and the plugging slurry 8 with the composite plugging agent concentration of 30% for the oil-based drilling fluid is prepared.
105g of the composite plugging agent 5 for the oil-based drilling fluid is placed in 300mL of the oil-based plugging base slurry, and the plugging slurry 9 with the concentration of the composite plugging agent being 35% for the oil-based drilling fluid is prepared.
A independently researched and designed CL-II slurry leakage stoppage tester is adopted to perform a crack experiment (a crack block is soaked for 12 hours in advance), the width of a crack is 0.5mm, 1mm and 2mm respectively, and the length of the crack is 15cm. The results are shown in Table 1.
TABLE 1 fracture Experimental results at different fracture and different drilling fluid composite plugging agent concentrations
According to the embodiment, the components of the composite plugging agent for the drilling fluid generate synergistic effect together, so that the composite plugging agent can plug cracks with the crack width being less than or equal to 2mm, and the plugging pressure-bearing strength is not less than 6MPa. When the width of the crack is fixed, along with the increase of the concentration of the plugging slurry, the material has no plugging but forms a longer slug, the plugging bearing strength is also obviously improved, and the leakage loss is also obviously reduced. When the concentration of the plugging slurry is constant, along with the increase of the width of the crack, although the bearing strength is reduced to a certain extent, the length of a plugging layer formed in the crack is longer, and the erosion resistance of drilling fluid is stronger.
It should be noted that the above-described embodiments are intended to provide those skilled in the art with a more complete understanding of the present invention, and are not intended to limit the invention in any way. Therefore, although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that the present invention may be modified and replaced equally, and all technical solutions and modifications which do not depart from the spirit and scope of the present invention should be covered by the protection scope of the present patent.
Claims (8)
1. The composite plugging agent for the oil-based drilling fluid is characterized by comprising the following raw materials in parts by weight: 45-60 parts of rigid bridging particles; 15-25 parts of rigid sheet material; 2-5 parts of a reticular flexible fiber material; 10-15 parts of oleophylic deformable material; 5-10 parts of viscoelastic deformation material.
2. The composite plugging agent for the oil-based drilling fluid according to claim 1, wherein the rigid bridging particles have a particle size ranging from 0.05 mm to 2mm and comprise one or two of industrial coal cinder powder, calcite and calcium carbonate.
3. The composite plugging agent for the oil-based drilling fluid according to claim 1, wherein the rigid sheet material has a particle size ranging from 20 to 60 meshes of a standard sample sieve and comprises one or two of shell residue, mica sheet and clam shell residue.
4. The composite plugging agent for the oil-based drilling fluid as claimed in claim 1, wherein the reticulated flexible fiber material has a size range of 8-20 meshes of standard sample separation sieve and comprises EPE polyethylene foam or EPS foam polystyrene.
5. The composite plugging agent for the oil-based drilling fluid according to claim 4, wherein the foaming ratio of the EPE polyethylene foam or the EPS foam polystyrene is 20-50 times.
6. The composite plugging agent for the oil-based drilling fluid according to claim 1, wherein the lipophilic deformation material has a particle size of 0.5 to 1mm and comprises natural asphalt, mineral asphalt or modified asphalt.
7. The composite plugging agent for oil-based drilling fluid according to claim 1 or 6, wherein the softening point of the oleophilic deformation material is 150 ℃.
8. The composite plugging agent for the oil-based drilling fluid according to claim 1, wherein the viscoelastic deformation material has a particle size ranging from 0.5mm to 2mm and comprises one or two of polypropylene and ethylene propylene diene monomer blended polymer particles, polyamide and ethylene propylene diene monomer blended polymer particles.
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| CN202110575747.XA CN115404052A (en) | 2021-05-26 | 2021-05-26 | Composite plugging agent for oil-based drilling fluid |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140060843A1 (en) * | 2012-08-31 | 2014-03-06 | Halliburton Energy Services, Inc. | Wellbore Servicing Compositions and Methods of Making and Using Same |
| CN105419753A (en) * | 2015-10-23 | 2016-03-23 | 中国石油大学(华东) | novel leakage-preventing while drilling agent for oil-based drilling fluid and application |
| US20160222274A1 (en) * | 2013-09-16 | 2016-08-04 | Solid Fluids & Technologies Corp. | Additives for controlling lost circulation and methods of making and using same |
| US20180251666A1 (en) * | 2017-03-02 | 2018-09-06 | Baker Hughes Incorporated | Polymer-modified asphalt for drilling fluid applications |
| CN110872503A (en) * | 2018-09-04 | 2020-03-10 | 中石化石油工程技术服务有限公司 | Novel composite plugging agent for well drilling and application thereof |
| CN111303845A (en) * | 2020-03-30 | 2020-06-19 | 中国石油天然气集团有限公司 | Preparation method and application of while-drilling plugging agent for oil-based drilling fluid |
| CN112210354A (en) * | 2019-07-12 | 2021-01-12 | 中石化石油工程技术服务有限公司 | Plugging agent for oil-based drilling fluid |
| US20210139764A1 (en) * | 2020-03-06 | 2021-05-13 | China University Of Petroleum | High temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method |
-
2021
- 2021-05-26 CN CN202110575747.XA patent/CN115404052A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140060843A1 (en) * | 2012-08-31 | 2014-03-06 | Halliburton Energy Services, Inc. | Wellbore Servicing Compositions and Methods of Making and Using Same |
| US20160222274A1 (en) * | 2013-09-16 | 2016-08-04 | Solid Fluids & Technologies Corp. | Additives for controlling lost circulation and methods of making and using same |
| CN105419753A (en) * | 2015-10-23 | 2016-03-23 | 中国石油大学(华东) | novel leakage-preventing while drilling agent for oil-based drilling fluid and application |
| US20180251666A1 (en) * | 2017-03-02 | 2018-09-06 | Baker Hughes Incorporated | Polymer-modified asphalt for drilling fluid applications |
| CN110872503A (en) * | 2018-09-04 | 2020-03-10 | 中石化石油工程技术服务有限公司 | Novel composite plugging agent for well drilling and application thereof |
| CN112210354A (en) * | 2019-07-12 | 2021-01-12 | 中石化石油工程技术服务有限公司 | Plugging agent for oil-based drilling fluid |
| US20210139764A1 (en) * | 2020-03-06 | 2021-05-13 | China University Of Petroleum | High temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method |
| CN111303845A (en) * | 2020-03-30 | 2020-06-19 | 中国石油天然气集团有限公司 | Preparation method and application of while-drilling plugging agent for oil-based drilling fluid |
Non-Patent Citations (1)
| Title |
|---|
| 于培志: "《钻井液实验与指导》", 地质出版社, pages: 101 * |
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