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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：US11578251B2
公开(公告)日：2023-02-14
申请号：US17696549
申请日：2022-03-16
发明人： Yinbo He , Guancheng Jiang , Lili Yang , Tengfei Dong , Bin Tan , Rongchao Cheng , He Shi , Jianguo Zhang , Tie Geng , Jiansheng Luo , Dongmin Jia , Kai Wang , Chunlin Xie , Wuquan Li , Xiaoqing Li
IPC分类号： C09K8/508 , C08F212/08 , C08F222/08 , C08L33/26 , C09K8/512
摘要： The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored. When the amphiphilic block polymer provided by the invention is used as the ultralow-permeability agent of the intelligent temporary plugging type water-based drilling fluid, the self-adaptive characteristic is realized; according to the amphiphilic block polymer, temporary plugging layer gaps formed in pore and throats by plugging materials in drilling fluid can be fully filled under the condition that the sizes and the distribution of the pore and throats of reservoirs are not required to be clear, so that the permeability of temporary plugging layer is greatly reduced, ultralow-permeability is realized, and the amphiphilic block polymer is weak in tackifying effect, has gel-improving effect and can improve the rheological property of the drilling fluid.
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公开(公告)号：US20220204833A1
公开(公告)日：2022-06-30
申请号：US17696549
申请日：2022-03-16
发明人： Yinbo He , Guancheng Jiang , Lili Yang , Tengfei Dong , Bin Tan , Rongchao Cheng , He Shi , Jianguo Zhang , Tie Geng , Jiansheng Luo , Dongmin Jia , Kai Wang , Chunlin Xie , Wuquan Li , Xiaoqing Li
IPC分类号： C09K8/508 , C08F212/08 , C08F222/08 , C08L33/26 , C09K8/512
摘要： The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored. When the amphiphilic block polymer provided by the invention is used as the ultralow-permeability agent of the intelligent temporary plugging type water-based drilling fluid, the self-adaptive characteristic is realized; according to the amphiphilic block polymer, temporary plugging layer gaps formed in pore and throats by plugging materials in drilling fluid can be fully filled under the condition that the sizes and the distribution of the pore and throats of reservoirs are not required to be clear, so that the permeability of temporary plugging layer is greatly reduced, ultralow-permeability is realized, and the amphiphilic block polymer is weak in tackifying effect, has gel-improving effect and can improve the rheological property of the drilling fluid.
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4.发明授权Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid 有权钻井液添加剂组合物和超高温超高密度无粘土水包油钻井液公开(公告)号：US09528042B1
公开(公告)日：2016-12-27
申请号：US15136496
申请日：2016-04-22
发明人： Guancheng Jiang , Zhengqiang Deng , Yinbo He , Xianbin Huang , Fan Liu , Yang Xuan , Zepu Cheng , Lili Yang , Chunlei Wang , Shuanglei Peng , Chong Liu , Kai Wang , Xinliang Li , Yawei Shi
IPC分类号： C09K8/36 , C09K8/28 , C09K8/035 , C07C231/02
CPC分类号： C09K8/28 , C07C231/02 , C09K8/035 , C07C233/38
摘要： The present invention relates to the field of petrochemical drilling and discloses a drilling fluid additive composition. The composition contains an emulsifier and a rheological modifier. The emulsifier is one or more of the compounds represented by Formula (1); the rheological modifier is dimer acid-organic amine copolymer, comprising structural units from the dimer acid, structural units from the alkylamine and structural units from the arylamine. The present invention further provides a drilling fluid containing the foregoing composition. When a clay-free oil-in-water drilling fluid contains the drilling fluid additive composition of the present invention containing the emulsifier and rheological modifier, it may have high temperature resistance and high density;
摘要翻译： 本发明涉及石油化学工程钻井领域，并公开了一种钻井液添加剂组合物。 该组合物含有乳化剂和剪切强度改进剂，其中乳化剂是一种或多种如式（1）所示的化合物; 剪切强度改进剂是二聚酸 - 有机胺共聚物，共聚物包含二聚酸结构单元，烷基胺的结构单元和芳族胺的结构单元。 本发明还提供含有组合物的钻井液。 当无粘土油包水钻井液含有含有乳化剂和剪切强度提高剂的钻井液添加剂组合物时，可以实现耐高温和高密度; 公式（1）可以在说明书中找到。
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公开(公告)号：US09745501B1
公开(公告)日：2017-08-29
申请号：US15466032
申请日：2017-03-22
发明人： Guancheng Jiang , Shuanglei Peng , Yinbo He , Zhengqiang Deng , Lili Yang , Fan Liu , Deli Gao , Xinliang Li , Yawei Shi , Kai Wang , Chunlei Wang , Guangchang Ma , Li Zhao , Gang Qu
CPC分类号： C09K8/32 , C08F293/005 , C09K8/035 , C09K2208/34
摘要： The present invention relates to the well drilling field in petroleum industry, in particular to an additive composition suitable for viscosity reduction of oil-based drilling fluids, an oil-based drilling fluid and use thereof. The double-block copolymer mainly consists of a block A and a block B, wherein, the block A is composed of structural units represented by formula (1), the block B is composed of structural units represented by formula (2), and the number-average molecular weight of the block A is 1,500-10,000. The double-block copolymer provided in the present invention can be used as a viscosity reducer in oil-based drilling fluids, especially can be used as a viscosity reducer in high-density clay-free oil-based drilling fluids, and can greatly decrease the apparent viscosity and plastic viscosity of oil-based drilling fluids in high-temperature and high-pressure reservoir while maintaining appropriate shearing force, so as to increase the drilling rate and reduce drilling difficulties.
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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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公开(公告)号：US10308857B1
公开(公告)日：2019-06-04
申请号：US16257870
申请日：2019-01-25
发明人： Guancheng Jiang , Xiaoxiao Ni , Lili Yang , Guangchang Ma , Chunyao Peng , Deli Gao , Xi Wang , Jinsheng Sun , Xiaolin Pu , Kai Wang , Zhengqiang Deng , Yang Bai , Yinbo He , Xinliang Li
摘要： A super-amphiphobic composite material and use of the same as an inhibitor, lubricant, reservoir protectant, and accelerator in water-based drilling fluids. A method for preparing the amphiphobic composite material includes: performing a first mixing of nano-titanium dioxide and nano-silicon dioxide in an alcohol-water mixed solvent under an alkaline condition, to obtain a dispersion of nano-titanium dioxide and nano-silicon dioxide; then introducing a fluorosilicone-containing coupler into the dispersion of nano-titanium dioxide and nano-silicon dioxide and performing a second mixing. The amphiphobic composite material may be applied in water-based drilling fluids. It has an effect of strongly inhibiting hydrated swelling and disintegration, low toxicity and high compatibility; can solve problems such as well wall instability, blockage of drilling tools, and reservoir damage, etc.; and has long-term practical value in complicated wells such as extra-deep wells, horizontal wells and extended reach wells, and in mud-bearing shale formations.
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