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1.发明授权公开(公告)号：US12146095B2
公开(公告)日：2024-11-19
申请号：US18354616
申请日：2023-07-18
Inventor： Jie Zhang , Rongchao Cheng , Jie Feng , Zhiliang Zhao , Shuangwei Wang , Long Li , Tianyi Zhang
Abstract: Provided in the present invention are a pH-responsive nano-gel plugging material, and a preparation method therefor and the use thereof. The pH-responsive nano-gel plugging material comprises the following raw materials in parts by mass: 50-70 parts of water, 2-3 parts of an emulsifier, 25-35 parts of an acrylic terpolymer, 10-15 parts of a polyalcohol compound, and 10-20 parts of a vinyl pyridine compound. The pH-responsive nano-gel plugging material can be applied to the plugging of Ordovician carbonate rock fractures and micro-karst cave strata, and can automatically identify Ordovician carbonate rock fractures and micro-karst cave leaking layers and realize effective blocking thereof.
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公开(公告)号：US11959375B2
公开(公告)日：2024-04-16
申请号：US17202584
申请日：2021-03-16
Inventor： Guodong Ji , Haige Wang , Meng Cui , Zhao Meng , Qiang Wu , Li Liu , Jiawei Zhang , Changchang Chen , Liu Cui , Jing Yu
IPC: E21B45/00 , E21B10/567 , E21B12/02 , E21B49/00
CPC classification number: E21B45/00 , E21B10/567 , E21B12/02 , E21B49/003 , E21B2200/20
Abstract: A method for evaluating a downhole working condition of a PDC bit includes: performing an indoor test, including performing a drilling test in different full-sized cores by using the PDC bit with different degrees of abrasion and balling under condition of given WOB and rotational speed, to acquire change characteristics of a WOB, a rotational speed, a torque, a ROP and a bit vibration of the PDC bit in different time domains; improving and perfecting an existing prediction model and evaluation method for the downhole working condition through data obtained by the test to obtain the method; reading parameters of the WOB, the rotational speed, the torque and the ROP in real time during drilling; determining the downhole working condition of the PDC bit by using the method in the improving and perfecting.
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公开(公告)号：US11926787B2
公开(公告)日：2024-03-12
申请号：US16854376
申请日：2020-04-21
Inventor： Shuoqiong Liu , Hua Zhang , Jianzhou Jin , Ming Xu , Yongjin Yu , Fengzhong Qi , Congfeng Qu , Hong Yue , Youcheng Zheng , Wei Li , Yong Ma , Youzhi Zheng , Zhao Huang , Jinping Yuan , Zhiwei Ding , Chongfeng Zhou , Chi Zhang , Zishuai Liu , Hongfei Ji , Yuchao Guo , Xiujian Xia , Yong Li , Jiyun Shen , Huiting Liu , Yusi Feng , Bin Lyu
Abstract: A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.
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公开(公告)号：US11686190B2
公开(公告)日：2023-06-27
申请号：US17864224
申请日：2022-07-13
Applicant: China University of Petroleum (Beijing) , CNPC Chuanqing Drilling Engineering Company Limited , CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Inventor： Guancheng Jiang , Yinbo He , Tengfei Dong , Chunyao Peng , Lili Yang , Xiaohu Luo , Xuwu Luo , Xing Liang , Bin Tan , Yong Wang , Daqi Fu , Tie Geng , Qihua Ran , Xiaobo Liu , Rongchao Cheng , Zenglin Wang , Gang Chen , Honghao Zhu , Yizheng Li , Li Zhao , Kaixiao Cui
CPC classification number: E21B47/006 , E21B43/20 , E21B47/06 , G01N11/00 , G01N13/00 , G01N15/0826 , E21B2200/20 , G01N2011/0093 , G01N2013/003
Abstract: A 4D quantitative and intelligent diagnosis method for spatio-temporal evolution of oil-gas reservoir damage types and extent includes: determining a characteristic parameter characterizing reservoir damage by each of a plurality of factors based on a spatio-temporal evolution simulation equation of reservoir damage by each of the plurality of factors; and determining an effective characteristic parameter characterizing the damage extent of the reservoir based on the characteristic parameter characterizing reservoir damage by each of the plurality of factors. The method quantitatively simulate the characteristic parameters of reservoir damage caused by the various factors and a total characteristic parameter of the reservoir damage.
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公开(公告)号：US20230133053A1
公开(公告)日：2023-05-04
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
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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Patent Agency Ranking
公开(公告)号：US20230026538A1
公开(公告)日：2023-01-26
申请号：US17864224
申请日：2022-07-13
Applicant: China University of Petroleum (Beijing) , CNPC Chuanqing Drilling Engineering Company Limited , CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Inventor： Guancheng JIANG , Yinbo HE , Tengfei DONG , Chunyao PENG , Lili YANG , Xiaohu LUO , Xuwu LUO , Xing LIANG , Bin TAN , Yong WANG , Daqi FU , Tie GENG , Qihua RAN , Xiaobo LIU , Rongchao CHENG , Zenglin WANG , Gang CHEN , Honghao ZHU , Yizheng LI , Li ZHAO , Kaixiao CUI
Abstract: The invention relates to the technical field of oilfield exploration, and discloses a 4D quantitative and intelligent diagnosis method and system for spatio-temporal evolution of oil-gas reservoir damage types and extent. The method includes: determining a characteristic parameter characterizing reservoir damage by each of a plurality of factors based on a spatio-temporal evolution simulation equation of reservoir damage by each of the plurality of factors; and determining an effective characteristic parameter characterizing the damage extent of the reservoir based on the characteristic parameter characterizing reservoir damage rby each of the plurality of factors. The invention can quantitatively simulate the characteristic parameters of reservoir damage caused by the various factors and a total characteristic parameter of the reservoir damage. Therefore for a well without reservoir damage, performing quantitative prediction of reservoir damage and spatio-temporal deduction of damage laws is of scientific guidance significance for preventing reservoir damage, and formulating development plans for oil pools and subsequent well stimulation measures, and for a well with reservoir damage, also performing quantitative diagnosis of reservoir damage and spatio-temporal deduction of damage laws achieves optimal design of a declogging measure and improvement or restoration of oil-gas well production and water well injection capacity.
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公开(公告)号：US20210396092A1
公开(公告)日：2021-12-23
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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公开(公告)号：US10858917B2
公开(公告)日：2020-12-08
申请号：US16389188
申请日：2019-04-19
Inventor： Quanli Zhang , Hongwei Yin , Wanjun Li , Huijuan Guo , Guojun Liu , Binggui Xu , Gang Chen , Yingjie Zhu , Gang Wang , Shaohua Zhou , Zhitong Liu , Yongliang Yu , Mingmin He , Tao Jia , Jianli Wang , Mingjie Lv , Fei He
Abstract: The present invention discloses an expandable liner hanger system comprising a central pipe and an expandable pipe, with an expansion cone provided therebetween the central pipe and expandable pipe in a way that the expansion cone is movable along the central pipe, so that the expandable pipe is expanded; wherein, the expansion cone comprises an expansion cone seat move along the central pipe, and an expansion cone sleeve fitted over the expansion cone seat, the connection between the expansion cone seat and the expansion cone sleeve is configured in a way that the expansion cone sleeve can move upward together with the expansion cone seat along the central pipe so that the expandable pipe is expanded, and the central pipe can drive the expansion cone seat to disengage from the expansion cone sleeve.
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公开(公告)号：US10808496B2
公开(公告)日：2020-10-20
申请号：US15864716
申请日：2018-01-08
Applicant: China National Petroleum Corporation , CNPC Engineering Technology R&D Company Limited , Beijing Petroleum Machinery Co.
Inventor： Hongying Zhang , Na Wang , Yanfu Huang , Lin Shi , Ping Yu
IPC: E21B33/13 , E21B37/02 , E21B33/16 , E21B33/134
Abstract: The present disclosure relates to a cementing plug comprising a first plug body (bottom plug), a second plug body (top plug), and a plurality of cleaning portions. The first plug body comprises: a first body provided therein with a chamber opening towards a lower end thereof, and an upper end of the first body being provided with a pressure portion; and an anti-rotation portion provided on an inner wall of the first body, and capable of being connected to slurry entering the chamber to limit a rotation of the first plug body. The second plug body comprises a second body. The plurality of cleaning portions is provided on outer sidewalls of the first body and the second body along a length direction thereof, for scraping off residuals (mud cake) on an inner wall of a casing.
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公开(公告)号：US10450801B2
公开(公告)日：2019-10-22
申请号：US15363699
申请日：2016-11-29
Inventor： Yanping Zhang , Xuehui Li , Qianli Wu , Yongliang Yu , Chuan Cao , Mingjie Lv , Tao Jia , Yi Yang
Abstract: The present disclosure provides a casing windowing method and tool using coiled tubing; the windowing method comprises the steps of: a) preparing a borehole, including drifting a casing, and scraping an inner wall of the casing; b) hanging a positioning assembly in the casing, including seating the positioning assembly at a wellhead of the borehole, and after the positioning assembly is put down to a predetermined position in the casing, hanging a hanger of the positioning assembly at the inner wall of the casing; c) fixing a whipstock at a down-hole of the borehole, including seating the whipstock at the wellhead, and inserting a guiding assembly of the whipstock into the hanger so that an orientation of a window inclined plane of the guiding assembly meets a requirement of window orientation; and d) windowing the casing, including seating a tapered windowing mill at the wellhead, and after the tapered windowing mill is put down to the window inclined plane of the guiding assembly, starting the tapered windowing mill to perform a window sidetracking of the inner wall of the casing. The casing windowing method and tool using coiled tubing of the present disclosure can accurately adjust the orientation of the inclined plane of the whipstock, and the operation is simpler, safer and more reliable.
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