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公开(公告)号:US10889742B1
公开(公告)日:2021-01-12
申请号:US16887869
申请日:2020-05-29
发明人: Guancheng Jiang , Yinbo He , Lili Yang , Kai Wang , Tengfei Dong , Xiaohu Quan , Kaixiao Cui , He Shi
摘要: The present disclosure relates to the technical field of water-based drilling fluid, in particular to a modified polyhistidine suitable for being used as a supramolecular shale inhibitor, a method of preparing the same, and its application in water-based drilling fluids. The modified polyhistidine has a histidine polymerization main chain comprising a structural unit, which is represented by Formula (1) and attached with a modifying group, and the histidine polymerization main chain has a histidine polymerization degree of 6-9. The modified polyhistidine provided by the present disclosure is a degradable biological material and has the advantage of environmental friendliness; when the modified polyhistidine is used as a shale inhibitor, it can take advantage of its supermolecular property to effectively inhibit the hydration expansion of montmorillonite which is the most important expansion mineral in shale, and exhibits excellent inhibition effect and desirable temperature resistance.
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公开(公告)号:US11286411B2
公开(公告)日:2022-03-29
申请号:US17036007
申请日:2020-09-29
发明人: Xiaohu Quan , Haiping Feng , Yihu Wang , Jianmin Chen , Yu Cao , Weizhi You , Junling Zhao , Jing Yang , Ang Li , Wei Quan
IPC分类号: C09K8/04
摘要: A synergist for a water-base drilling fluid and a preparation method therefor, a water-base drilling fluid and an application thereof, and belongs to the field of drilling fluid technologies. The synergist is prepared from raw materials comprising the following parts by weight: 15˜25 parts of sodium styrene sulfonate, 8˜15 parts of allyl trimethyl ammonium chloride, 2˜8 parts of didodecyldimethylammonium bromide, 1˜5 parts of n-octyl triethoxysilane, 1˜5 parts of propyltriethoxysilane, 1˜5 parts of disodium lauryl sulfosuccinate, 10˜20 parts of nano silica, 8˜15 parts of paraffin, and the like.
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公开(公告)号:US11326450B2
公开(公告)日:2022-05-10
申请号:US17345904
申请日:2021-06-11
发明人: Guancheng Jiang , Xiongjun Wu , Lili Yang , Yinbo He , Tengfei Dong , Xiaohu Quan , Chunyao Peng , Xuwu Luo , Bin Tan , Jun Cai , Xing Liang , Zhiliang You , Yong Wang , Bin Li , Yongbin Guo , Shen Guan
IPC分类号: G06N3/08 , G01V99/00 , E21B49/08 , E21B49/00 , E21B47/003 , G06N3/04 , G06Q10/04 , G06Q50/02 , G01V1/28 , G06Q10/06 , E21B43/00 , G06F7/60 , E21B43/16 , E21B41/00
摘要: The embodiments of the invention provide an intelligent prediction method and apparatus for reservoir sensitivity, belonging to the technical field of reservoir sensitivity prediction. The method includes: acquiring a reservoir sensitivity influence factor item related to a reservoir sensitivity result to be predicted and numerical values of corresponding reservoir sensitivity influence factors; determining a corresponding type of database according to the reservoir sensitivity influence factor item; determining whether numerical values of reservoir sensitivity influence factors corresponding to core parameters in the numerical values of the reservoir sensitivity influence factors include a first upper boundary value or a first lower boundary value; and using, according to whether the first upper boundary value or the first lower boundary value is included, different intelligent sensitivity prediction models to calculate the reservoir sensitivity result to be predicted.
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公开(公告)号:US11453812B2
公开(公告)日:2022-09-27
申请号:US17317406
申请日:2021-05-11
发明人: Guancheng Jiang , Yinbo He , Lili Yang , Tengfei Dong , Xiaohu Quan , Kai Wang , Chunyao Peng , Xuwu Luo , Bin Tan , Jun Cai , Xing Liang , Zhiliang You , Yong Wang
摘要: The invention relates to the field of drilling fluid, in particular to a saturated salt water drilling fluid of salt response type intelligent polymer and preparation method thereof. The drilling fluid contains two or more of the following components stored in admixture or separately: bentonite, NaOH, KCl, calcium carbonate, barite, NaCl, supramolecular fluid loss additive, supramolecular shear-enhancing agent, plugging agent, coating agent and water. The drilling fluid provided by the invention has the characteristics of salt response and self-assembly, can keep rheological properties such as rapid recovery of the sheared structure, low extreme high shear rate viscosity, good shear dilution property and the like in a high-salt environment, has good fluid loss reduction performance, reservoir protection performance and debris dispersion inhibition performance, and has good temperature resistance and pollution resistance performance.
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公开(公告)号:US10442973B1
公开(公告)日:2019-10-15
申请号:US16392395
申请日:2019-04-23
发明人: Guancheng Jiang , Xiaoxiao Ni , Lili Yang , Yinbo He , Xiaohu Quan , Zhong Li , Xiaoyong Wang , Yongbin Guo , Fabin Xu , Zhengqiang Deng , Xi Wang , Deli Gao , Kai Wang , Xuwu Luo , Chunyao Peng
摘要: The invention relates to the field of petroleum drilling fluids, and discloses a super-amphiphobic strongly self-cleaning high-performance water-based drilling fluid comprising polymeric super-amphiphobic agent and a drilling method. The polymeric super-amphiphobic agent comprises structural units A derived from acrylamide, structural units B derived from methyl methacrylate, structural units C derived from butyl acrylate, structural units D derived from a compound represented by the following formula (1), structural units E derived from a silane coupler, and nano-titania; wherein the nano-titania is bonded to the polymeric super-amphiphobic agent via the structural unit E, and the silane coupler is a silane coupler having double bonds; R is a C3-C8 perfluoroalkyl group. A water-based drilling fluid additive prepared from the polymeric super-amphiphobic agent in the present invention has excellent wettability, inhibition, lubrication, reservoir protection, and rheology and fluid loss properties.
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