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11.发明公开公开(公告)号：US20240336828A1
公开(公告)日：2024-10-10
申请号：US18575671
申请日：2022-12-02
Applicant: CHINA NATIONAL PETROLEUM CORPORATION , CNPC Engineering Technology R&D Company Limited , Beijing Huamei Inc. CNPC
Inventor： Jianzhou JIN , Lili CHEN , Yuchao GUO , Hua ZHANG , Fuchen LIU , Yong MA , Yao WANG , Xiaobing ZHANG , Jiaying ZHANG , Zishuai LIU , Haizhi ZHANG , Pu XU , Youzhi ZHENG , Yongjin YU , Congfeng QU , Fengzhong QI , Yong LI , Ming XU , Guifu WANG , Shuoqiong LIU , Chi ZHANG , Bin LYU , Chongfeng ZHOU , Zhiwei DING , Shunping ZHANG , Jiwei JIANG , Qin HAN , Yusi FENG , Chenyang ZHOU , Yiliu SUN , Songbing YAN
IPC: C09K8/487 , C04B14/06 , C04B18/12 , C04B20/00 , C04B22/08 , C04B24/00 , C04B24/22 , C04B24/26 , C04B24/30 , C04B24/32 , C04B24/38 , C04B24/42 , C04B40/00 , C04B103/20 , C04B103/46 , C04B103/50
CPC classification number: C09K8/487 , C04B14/06 , C04B18/12 , C04B20/0008 , C04B22/08 , C04B24/003 , C04B24/22 , C04B24/2623 , C04B24/2652 , C04B24/30 , C04B24/32 , C04B24/38 , C04B24/42 , C04B40/0046 , C04B2103/20 , C04B2103/46 , C04B2103/50 , C04B2201/20 , C04B2201/30 , C09K2208/10
Abstract: The present disclosure provides an ultra-high temperature resistant cement slurry system for cementing and the preparation method and use thereof. The cement slurry system comprises cement, an ultra-high temperature strength stabilizer, an ultra-high temperature reinforcing material, a density regulator, an ultra-high temperature suspension stabilizer, a dispersant, a fluid loss additive, a retarder, a defoaming agent and water, wherein the ultra-high temperature suspension stabilizer comprises an ether-based starch, an aluminosilicate and a polyalcohol polymer. The method for preparing the cement slurry system includes dry mixing and wet mixing raw materials homogeneously, respectively, and then homogeneously mixing the dry mix and wet mix to obtain the cement slurry system. The present disclosure further provides use of the cement slurry system for cementing in deep wells and ultra-deep wells at high and ultra-high temperatures. The ultra-high temperature resistant cement slurry system for cementing provided by the present disclosure has a strong temperature resistance, a wide applicable range, and an excellent settlement stability. It can prevent the decline of strength of cement stone at high temperature, ensure the cementing and sealing effect and improve the cementing quality.
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12.发明公开公开(公告)号：US20230278927A1
公开(公告)日：2023-09-07
申请号：US18315088
申请日：2023-05-10
Inventor： Hua Zhang , Jianzhou Jin , Yongjin Yu , Congfeng Qu , Fengzhong Qi , Ming Xu , Shuoqiong Liu , Zhaohui Wang , Yuchao Guo , Jiliang Liu , Bin Lyu , Zhiwei Ding , Chi Zhang , Zishuai Liu , Hongfei Ji , Xiujian Xia , Yong Li , Chongfeng Zhou , Xiaobing Zhang
Abstract: A high-strength Portland cement slurry for ultra-high-temperature cementing, a preparation method therefor and an application thereof. In parts by weight, the composition of the cement slurry comprises: 100 parts of Portland cement, 4-6 parts of a high temperature anti-cracking material, 80-105 parts of a high-temperature reinforcing material, 70-78 parts of water, 0.5-1.5 parts of a dispersant, 1-3 parts of a fluid loss reducer, 0.5-2.5 parts of a retarder and 0.2-0.5 parts of a defoamer; the high-temperature reinforcing material is a combination of acid-washed quartz sand, metakaolin and aluminum sulfate, a combination of acid-washed quartz sand, metakaolin, feldspar and sodium sulfate, or a combination of acid-washed quartz sand, metakaolin, feldspar and calcium nitrite. The cement slurry has good settling stability, rapid strength development in low temperatures, high compressive strength of cement stone at a high temperature of 600° C., and stable development of long-term high-temperature compressive strength.
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公开(公告)号：US11293254B2
公开(公告)日：2022-04-05
申请号：US16908898
申请日：2020-06-23
Inventor： Quanli Zhang , Binggui Xu , Depei Shi , Hongwei Yin , Huijuan Guo , Guodong Zhan , Wanjun Li , Jianhua Guo , Tao Jia , Fei Han , Jianli Wang , Yingjie Zhu , Mingjie Lv , Yi Yang , Yongliang Yu , Zhitong Liu , Fuxiang Hou , Zhijian Hu
IPC: E21B33/12 , E21B33/1295
Abstract: Disclosed are an expansion tool assembly, comprising: an expandable tubular; a guide shoe partially inserted into and connected to the lower end of the expandable tubular; a sealing sleeve arranged in the expandable tubular and connected to the upper end of the guide shoe; an expansion assembly comprising an expansion cone and expansion seat disposed inside the expandable tubular, wherein the lower end of the expansion seat is connected with hooks, which can be rested on the upper end of the sealing sleeve; an upper joint that is connected to the upper end of the expansion seat and can be connected to a drill string. A force transfer path can be established via connection between the expansion seat and sealing sleeve, so that expandable tubular weight is borne on the drill string. Unintentional expansion of the expandable tubular, caused by interaction between expandable tubular and expansion cone, can be avoided.
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14.发明公开公开(公告)号：US20240288348A1
公开(公告)日：2024-08-29
申请号：US18572483
申请日：2022-10-26
Inventor： Jiyun SHEN , Hongfei JI , Xueli GUO , Jianzhou JIN , Yongjin YU , Congfeng QU , Fengzhong QI , Zhao HUANG , Xiujian XIA , Huiting LIU , Yongqin CHENG , Pengyang JIA , Zhengyang ZHAO
CPC classification number: G01N3/068 , G01N3/08 , G01N33/383 , G01N2203/0019 , G01N2203/0075 , G01N2203/0098 , G01N2203/0218 , G01N2203/0647 , G01N2203/0682
Abstract: A set cement mechanical property parameter measurement method and apparatus based on image recognition technology. The method includes: acquiring a first image of a set cement specimen; extracting at least one feature point in the first image; acquiring a second image of the set cement specimen, the second image being an image of the set cement specimen subjected to a compressive load during a compressive test; determining a deformation gradient of the feature point by positions of the same feature point in the first image and the second image; determining a strain tensor by the deformation gradient; and determining a Young's modulus parameter and a Poisson's ratio parameter by the strain tensor. The method can reduce the measurement period of the Young's modulus and Poisson's ratio of the set cement specimens, simplify the corresponding operation process, and reduce the corresponding measurement error.
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公开(公告)号：US20240228858A1
公开(公告)日：2024-07-11
申请号：US18571041
申请日：2022-06-30
Inventor： Jianzhou JIN , Yuchao GUO , Hong YUE , Yucheng ZHENG , Hua ZHANG , Lili CHEN , Shuoqiong LIU , Wei LI , Yong MA , Feng ZHOU , Chengquan LI , Yao WANG , Yongjin YU , Congfeng QU , Fengzhong QI , Yong LI , Youzhi ZHENG , Jianhua GUO , Ming XU , Zhaohui WANG , Chi ZHANG , Zishuai LIU , Xiaobing ZHANG , Hongfei JI , Shunping ZHANG , Rui ZHENG
IPC: C09K8/467 , C04B40/00 , C04B103/50
CPC classification number: C09K8/467 , C04B40/0039 , C04B2103/50 , C04B2201/20 , C04B2201/50
Abstract: The present disclosure relates to the technical field of oil and gas field exploitation, in particular to an early strength material suitable for a cement slurry system, a cement slurry composition, a cement slurry system, a preparation method therefor and the use thereof. The early strength material contains an aluminum salt, a sodium salt, crystal whiskers, an inorganic mineral and dispersing agent I, wherein the weight ratio of the aluminum salt, the sodium salt, the crystal whiskers, the inorganic mineral and dispersing agent I is (1-3):(1-3):(1-4):(1-8):1. The early strength material provided by the present invention has both high-temperature retarding performance and low-temperature early strength performance; meanwhile, while satisfying well cementing, the cement slurry system prepared from the cement slurry composition containing the early strength material can prolong thickening time of cement slurry under a high-temperature condition, can prevent ultra-retarding of top cement slurry under a low-temperature condition and has increased early strength.
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Patent Agency Ranking
公开(公告)号：US11787990B2
公开(公告)日：2023-10-17
申请号：US18148939
申请日：2022-12-30
Applicant: China University of Petroleum (Beijing) , CNPC Chuanqing Drilling Engineering Company Limited , CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Inventor： Guancheng Jiang , Jinsheng Sun , Yinbo He , Xin Zhang , Chunyao Peng , Tengfei Dong , Bin Tan , Tie Geng , Lili Yang , Xiaohu Luo , Xuwu Luo , Xing Liang , Changwei Chen , Xiaobo Liu , Rongchao Cheng , Jiansheng Luo , Jianguo Zhang , Yong Wang , Daqi Fu , Qifa Ran , Li Zhao , Kaixiao Cui , Xiaoxiao Ni
CPC classification number: C09K8/24 , C09K8/16 , C09K8/206 , C09K2208/10 , C09K2208/12 , C09K2208/34
Abstract: The present invention relates to the field of petroleum industry phase oilfield chemistry, and specifically relates to a bionic and dual-phobic drilling fluid. The drilling fluid contains a bionic wall-fixing agent, a bionic lubricant, a super dual-phobic agent, a scrap-carrying agent and a bionic shale inhibitor. The present invention uses the theory of bionics and the theory of a downhole rock surface being double phobic as a basis. By means of using the bionic wall-fixing agent, the bionic lubricant, the super dual-phobic agent, the scrap-carrying agent and the bionic shale inhibitor, which have special properties of imitating animals and plants in nature, and using a series of bionic treatment agents, a set of bionic and dual-phobic drilling fluid systems, which corresponds to an unconventional, complex oil and gas well, is formed.
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公开(公告)号：US11060009B2
公开(公告)日：2021-07-13
申请号：US16196456
申请日：2018-11-20
Applicant: CNPC Engineering Technology R&D Company Limited , China University of Petroleum (East China)
Inventor： Yuping Yang , Jingping Liu , Ying Wang , Long Li , Yan Zhang , Yushuang Liu , Pingliang Fang , Weiwei Hao , Wei Zhang
IPC: C09K8/24 , C08F220/58 , E21B21/00 , E21B21/06
Abstract: A filtrate reducer for temperature-resistant calcium-resistant water-based drilling fluid used in oil and gas reservoir protection, a drilling fluid, and uses of the filtrate reducer and the drilling fluid are described. The filtrate reducer contains structural units represented by formulas (1), (2), and (3) herein. The water-based drilling fluid contains the filtrate reducer, and exhibits good inhibitive, rheological, filtrate reducing, and reservoir protection performance when it is applied in the drilling process in a high-temperature high-calcium deep salt-gypsum formation.
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公开(公告)号：US20250067134A1
公开(公告)日：2025-02-27
申请号：US18725557
申请日：2022-12-08
Inventor： Guodong JI , Changchang CHEN , Qiang WU , Hongchun HUANG , Li LIU , Jing YU , Meng CUI , Jiawei ZHANG , Wenxin BI , Cuiping ZHOU
IPC: E21B21/08
Abstract: The present disclosure discloses a horizontal well cuttings bed processing method and device. The method includes: based on drilling engineering information of a horizontal well, predicting a distribution pattern of a cuttings bed throughout a drilling process, determining a cuttings bed height risk level in each well section, and outputting a cuttings bed removal solution associated with the well section. According to the present disclosure, processing accuracy and processing efficiency of the cuttings bed in a horizontal well can be improved, and accumulation of the cuttings bed in the horizontal well can be effectively resolved.
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公开(公告)号：US20240360354A1
公开(公告)日：2024-10-31
申请号：US18759979
申请日：2024-06-30
Inventor： Lili YAN , Jianhua WANG , Jiaqi ZHANG , Fengbao LIU , Rongchao CHENG , Haijun YANG , Xiaobo CUI , Xiaoxiao NI , Rentong LIU , Shan GAO
Abstract: Provided by the present disclosure are a nanoemulsion and method for its preparation, and a high-temperature-resistant, high-density, oil-based well completion fluid and the application thereof. The nanoemulsion comprises a lipophilic alkenyl monomer, a hydrophilic alkenyl monomer, an emulsifier, a cross-linking agent, and water. The high-temperature-resistant, high-density, oil-based completion fluid comprises a base oil, a main emulsifier, an auxiliary emulsifier, an aqueous solution of salt, organic soil, an alkalinity regulator, a filtrate loss reducer, a stabilizer, and a weighting material. The stabilizer comprises the described nanoemulsion.
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公开(公告)号：US20240247586A1
公开(公告)日：2024-07-25
申请号：US18566144
申请日：2022-12-06
Inventor： Jiajin Wang , Weimin Mao , Weiping Ai , Yifeng Fan , Xiurong Dou , Hengtian Jia , Peng Wang , Zhigang Wei , Lei Wang , Xianwei Guo
CPC classification number: E21B47/20 , E21B4/04 , E21B44/005
Abstract: The present disclosure discloses a mud pressure wave signal modulation apparatus and method, which relate to the technical field of petroleum drilling engineering. The apparatus includes: a motor (5), a valve plate (3), a main control circuit (23), a motor drive control circuit, and a downhole communication circuit; the valve plate (3) is driven by the motor (5) to be rotated around an axial direction perpendicular to a flow direction of drilling fluid; the motor (5) and the valve plate (3) are disposed in a drilling fluid channel (2), and the drilling fluid channel (2), the motor (5), the valve plate (3), the main control circuit (23), the motor drive control circuit and the downhole communication circuit are disposed in a drill collar.
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