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公开(公告)号：US09528041B2
公开(公告)日：2016-12-27
申请号：US14871610
申请日：2015-09-30
发明人： Guancheng Jiang , Yang Xuan , Xianmin Zhang , Xianzhu Wu , Wei Ouyang
IPC分类号： C09K8/12
CPC分类号： C09K8/12 , C09K8/206 , C09K8/508 , C09K8/514 , C09K2208/08 , C09K2208/10 , C09K2208/12
摘要： The present subject matter relates to the drilling fluid field, and discloses a bionic drilling fluid and a method for preparation of the bionic drilling fluid. The bionic drilling fluid comprises a specific bionic wall bracing agent, a bionic shale inhibitor, a filtrate reducer, and an amphiphilic reservoir protectant, wherein, the filtrate reducer comprises microcrystalline cellulose. The bionic drilling fluid provided in the present subject matter can effectively solve the problem of well wall instability, and has great industrial application prospects.
摘要翻译： 本发明涉及钻井液场，并公开了一种仿生钻井液和一种制备仿生钻井液的方法。 仿生钻井液包括特定的仿生壁支撑剂，生物页岩抑制剂，滤液减量剂和两亲储层保护剂，其中滤液减量剂包含微晶纤维素。 本项目提供的仿生钻井液能有效解决井壁不稳定性问题，具有很大的工业应用前景。
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公开(公告)号：US09790417B1
公开(公告)日：2017-10-17
申请号：US15489193
申请日：2017-04-17
发明人： Guancheng Jiang , Yinbo He , Fan Liu , Lili Yang , Xianmin Zhang , Deli Gao , Xianzhu Wu , Guangchang Ma , Gang Qu , Li Zhao , Haifang Sun , Wei Ou'yang , Junbin Chen , Jienian Yan , Liexiang Han , Chunyao Peng
CPC分类号： C09K8/12 , C09K8/035 , C09K2208/10 , C09K2208/12
摘要： The present invention relates to the well drilling field in petrochemical industry, and discloses a high-density water-based drilling fluid suitable for horizontal shale gas wells comprising a nano-plugging agent, a bionic wall bracing agent, a bionic shale inhibitor, a filler, an emulsifier, and an amphiphobic wettability reversal agent, wherein, the nano-plugging agent is modified silicon dioxide nano-particle, and its modifying group includes a modifying copolymer chain; the bionic wall bracing agent is carboxymethyl chitosan with a dopamine-derived group grafted on its main chain; the bionic shale inhibitor is composed of structural units of arginine and structural units of lysine; the filler consists of calcium carbonate of 1,600-2,500 mesh, calcium carbonate of 1,050-1,500 mesh, and calcium carbonate of 500-1,000 mesh at a weight ratio of 1:0.55-6:0.55-6; and the amphiphobic wettability reversal agent is a dual-cation fluorocarbon surfactant. The drilling fluid provided herein is suitable for use in shale gas mining.
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公开(公告)号：US20160333248A1
公开(公告)日：2016-11-17
申请号：US14871610
申请日：2015-09-30
发明人： Guancheng Jiang , Yang Xuan , Xianmin Zhang , Xianzhu Wu , Wei Ouyang
IPC分类号： C09K8/12
CPC分类号： C09K8/12 , C09K8/206 , C09K8/508 , C09K8/514 , C09K2208/08 , C09K2208/10 , C09K2208/12
摘要： The present subject matter relates to the drilling fluid field, and discloses a bionic drilling fluid and a method for preparation of the bionic drilling fluid. The bionic drilling fluid comprises a specific bionic wall bracing agent, a bionic shale inhibitor, a filtrate reducer, and an amphiphilic reservoir protectant, wherein, the filtrate reducer comprises microcrystalline cellulose. The bionic drilling fluid provided in the present subject matter can effectively solve the problem of well wall instability, and has great industrial application prospects.
摘要翻译： 本发明涉及钻井液场，并公开了一种仿生钻井液和一种制备仿生钻井液的方法。 仿生钻井液包括特定的仿生壁支撑剂，生物页岩抑制剂，滤液减量剂和两亲储层保护剂，其中滤液减量剂包含微晶纤维素。 本项目提供的仿生钻井液能有效解决井壁不稳定性问题，具有很大的工业应用前景。
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公开(公告)号：US10253237B1
公开(公告)日：2019-04-09
申请号：US16130694
申请日：2018-09-13
发明人： Guancheng Jiang , Deli Gao , Shuo Zhang , Yong Wang , Xianzhu Wu , Liexiang Han , Xiangzeng Wang , Chunyao Peng , Yinbo He , Fan Liu , Hongguo Zuo , Yongqing Zhang , Lili Yang , Zhong Li , Yanjun Li
摘要： The present invention relates to the well drilling field in the petroleum industry, particularly to film former used for coal-bed gas well drilling and preparation method thereof, drilling fluid and usage thereof. The preparation method of the film former includes: (1) controlling polycaprolactone diol and diisocyanate to have a first polymerization reaction in the presence of a polyurethane catalyst, to obtain a polyurethane prepolymer with two ends blocked by diisocyanate; (2) controlling the product of the first polymerization reaction to have a chain extension reaction with a polyalcohol; (3) controlling the product of the chain extension reaction and one part of hydroxyalkyl acrylate monomer to have an additive reaction, and then introducing the other part of hydroxyalkyl acrylate monomer and a styrene monomer, and emulsifying in water to obtain an emulsion; (4) mixing a radical initiator with the emulsion to have a second polymerization reaction.
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5.发明授权Method for preparation of biomimetic polymer for stabilizing wellbore and drilling fluid 有权制备用于稳定井筒和钻井液的仿生聚合物的方法公开(公告)号：US09410068B2
公开(公告)日：2016-08-09
申请号：US14862795
申请日：2015-09-23
发明人： Guancheng Jiang , Yang Xuan , Xianzhu Wu , Junbin Chen , Wei Ouyang , Taotao Luo
CPC分类号： C09K8/035 , C08B37/003 , C08F8/32 , C08F251/00 , C08L5/08 , C08L51/02 , C08F220/06
摘要： The present invention provides a biomimetic polymer for stabilizing wellbore, a method for preparation of the biomimetic polymer, and a drilling fluid. The polymer contains carboxymethyl chitosan that serves as a backbone and dopamine-derived groups grafted on the backbone. The polymer provided in the present invention can improve the strength of shale in the wellbore, seal the shale pores and reduce the filter loss of drilling fluid, and thereby attains an effect of stabilizing the wellbore in shale formation in drilling process.
摘要翻译： 本发明提供了一种用于稳定井眼的仿生聚合物，该仿生聚合物的制备方法和一种钻井液。 聚合物含有用作骨架的羧甲基壳聚糖和在骨架上接枝的多巴胺衍生基团。 本发明提供的聚合物可以提高井眼中页岩的强度，密封页岩孔隙，减少钻井液的过滤器损失，从而达到在钻井过程中页岩形成中稳定井眼的效果。
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公开(公告)号：US10336931B2
公开(公告)日：2019-07-02
申请号：US15874438
申请日：2018-01-18
发明人： Guancheng Jiang , Deli Gao , Guangchang Ma , Jinsheng Sun , Xi Wang , Xiaolin Pu , Xianzhu Wu , Xiaoxiao Ni , Xianmin Zhang , Le Wang , Yinbo He , Fan Liu , Lili Yang , Tengfei Dong
IPC分类号： C09K8/035 , C09K8/22 , C07C311/05 , C07C311/09 , C09K8/04 , C09K8/60
摘要： The present invention relates to the well drilling field in petrochemical industry, in particular to use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid. The dual-cation fluorocarbon surfactant is a dual-cation fluorocarbon surfactant of which the cation part is represented by the following formula (1). The dual-cation fluorocarbon surfactant of the present invention can serve as wettability reversal agent when it is used for oil-gas drilling to enable rock amphiphobic, and is an amphiphobic wettability reversal agent which can cause rock surface to be non-hydrophilic and non-lipophilic. Using of dual-cation fluorocarbon surfactant, especially when drilling highly hydrous mud shale, can avoid permeation of water and oil into the rock effectively and thereby a capillary phenomenon can be prevented, and an effect of stabilizing the well wall and protecting the reservoir is attained.
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7.发明授权公开(公告)号：US09399692B1
公开(公告)日：2016-07-26
申请号：US14860295
申请日：2015-09-21
发明人： Guancheng Jiang , Yang Xuan , Xi Wang , Ranran Song , Xianzhu Wu , Junbin Chen , Wei Ou Yang , Taotao Luo , Lan Wang
IPC分类号： C08F222/38 , C09K8/035
CPC分类号： C08F222/385 , C08F220/18 , C09K8/035 , C09K8/506 , C08F212/08 , C08F2220/585 , C08F220/34 , C08F220/54 , C08F212/14
摘要： The present subject matter relates to an amphiphilic reservoir protecting agent, including structural units denoted by the following formula (1), (2), (3) and (4). The present subject matter further provides a method for preparation of an amphiphilic reservoir protecting agent. The present subject matter further provides a drilling fluid that contains the amphiphilic reservoir protecting agent. The amphiphilic reservoir protecting agent and drilling fluid obtained in the present subject matter have high reservoir protection property and high shale inhibition property.
摘要翻译： 本发明涉及一种两亲储存器保护剂，包括由下式（1），（2），（3）和（4）表示的结构单元。 本主题进一步提供了制备两亲贮存器保护剂的方法。 本主题还提供了一种包含两亲贮存器保护剂的钻井液。 在本主题中获得的两亲储层保护剂和钻井液具有较高的油藏保护性能和较高的页岩抑制特性。
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公开(公告)号：US10266744B2
公开(公告)日：2019-04-23
申请号：US16130704
申请日：2018-09-13
发明人： Guancheng Jiang , Deli Gao , Shuo Zhang , Yong Wang , Xianzhu Wu , Liexiang Han , Xiangzeng Wang , Chunyao Peng , Yinbo He , Fan Liu , Hongguo Zuo , Yongqing Zhang , Lili Yang , Zhong Li , Yanjun Li
IPC分类号： C09K8/12
摘要： The present invention relates to well drilling field in the petroleum industry, particularly to accelerator used for drilling fluids, water-based drilling fluid and usage thereof. The accelerator contains: sulfonated polyglycerol long-chain fatty acid ester, fatty alcohol polyoxyethylene ether, alcohol ether carboxylate, glycidyl ether, and polyoxyethylene alkylphenol ether; wherein, the weight ratio of the sulfonated polyglycerol long-chain fatty acid ester:the fatty alcohol polyoxyethylene ether:the alcohol ether carboxylate:the glycidyl ether:the polyoxyethylene alkylphenol ether is 100:1-10:0.5-10:1-10:1-10. The accelerator provided in the present invention can lubricate the drill bit and drilling tool, prevent accumulation of drill cuttings, reduce friction, and improve rate of penetrate.
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公开(公告)号：US09834717B1
公开(公告)日：2017-12-05
申请号：US15488927
申请日：2017-04-17
发明人： Guancheng Jiang , Xianmin Zhang , Yinbo He , Deli Gao , Xianzhu Wu , Lili Yang , Guangchang Ma , Gang Qu , Li Zhao , Fan Liu , Haifang Sun , Wei Ou'Yang , Jienian Yan , Junbin Chen , Liexiang Han
CPC分类号： C09K8/12 , C09K8/035 , C09K2208/10 , C09K2208/12
摘要： The present invention relates to the well drilling field in petrochemical industry, and discloses a drilling fluid additive composition comprising a nano-plugging agent, a bionic wall bracing agent, a bionic shale inhibitor, an emulsifier, and an amphiphobic wettability reversal agent, wherein, the nano-plugging agent is modified silicon dioxide nano-particle, and its modifying group includes a modifying copolymer chain; the bionic wall bracing agent is carboxymethyl chitosan with a dopamine-derived group grafted on its main chain; the bionic shale inhibitor is composed of structural units of arginine and structural units of lysine; and the amphiphobic wettability reversal agent is a dual-cation fluorocarbon surfactant. The present invention further provides a pseudo oil-based drilling fluid suitable for horizontal shale gas wells containing the above composition. When the water-based drilling fluid contains the drilling fluid additive composition provided in the present invention, the water-based drilling fluid would have high temperature-resistance, high plugging and high inhibition performance, is environment friendly, especially have high density, and is especially suitable for horizontal shale gas well mining.
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10.发明授权公开(公告)号：US09783726B1
公开(公告)日：2017-10-10
申请号：US15488941
申请日：2017-04-17
发明人： Guancheng Jiang , Yinbo He , Deli Gao , Xianmin Zhang , Xianzhu Wu , Lili Yang , Fan Liu , Guangchang Ma , Gang Qu , Li Zhao , Haifang Sun , Liexiang Han
CPC分类号： C09K8/24 , C09K2208/10 , C09K2208/12
摘要： The present invention relates to the well drilling field in petrochemical industry, and discloses an environment-friendly water-based drilling fluid applicable to horizontal shale gas wells comprising a nano-plugging agent, a bionic wall bracing agent, a bionic shale inhibitor, a filler, an emulsifier, and an amphiphobic wettability reversal agent, wherein, the nano-plugging agent is modified silicon dioxide nano-particle, and its modifying group includes an acrylic copolymer chain; the bionic wall bracing agent is carboxymethyl chitosan with a dopamine-derived group grafted on its main chain; the bionic shale inhibitor is composed of structural units of arginine and structural units of lysine; the filler consists of calcium carbonate of 1,600-2,500 mesh, calcium carbonate of 1,050-1,500 mesh, and calcium carbonate of 500-1,000 mesh at a weight ratio of 1:0.55-6:0.55-6; and the amphiphobic wettability reversal agent is a dual-cation fluorocarbon surfactant. The drilling fluid provided in the present invention has high temperature-resistance, high plugging and high inhibition performance, is environment friendly, especially has high density, and is applicable to shale gas mining.
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