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公开(公告)号：US10408014B1
公开(公告)日：2019-09-10
申请号：US16246860
申请日：2019-01-14
发明人： Baojiang Sun , Xueqing Teng , Yaoming Zhang , Zhiyuan Wang , Hongtao Liu , Jianbo Zhang , Youqiang Liao
IPC分类号： E21B33/138 , E21B47/06
摘要： The well killing device comprises: a first path; a flow regulating device; a pressure detector and a controlling device. The controlling device may control the discharge amount of the killing fluid in different killing stages according to the gas-fluid two-phase flow theory, the pressure of the killing fluid at the wellhead, and the rising speed of the drilling column.
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公开(公告)号：US20240093579A1
公开(公告)日：2024-03-21
申请号：US18341816
申请日：2023-06-27
申请人： CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) , SHANDONG PENGBO SAFETY AND ENVIRONMENTAL PROTECTION SERVICE CO., LTD.
发明人： Jianbo Zhang , Zhiyuan Wang , Yuting Wang , Baojiang Sun , Jie Zhong , Jihao Pei , Nan Ma , Xueqi Liu , Junjie Hu
CPC分类号： E21B41/0099 , E21B7/046 , E21B33/138 , E21B43/24 , E21B43/26 , E21B43/305 , E21B49/00
摘要： A high-efficiency yield-increasing exploitation method for natural gas hydrates includes steps of drilling of natural gas hydrate reservoirs along horizontal wells, seepage increasing by fracturing for fracture forming and stability improvement by grouting in the natural gas hydrate reservoirs, and yield improvement by combined exploitation of depressurization of the horizontal wells and heat injection; according to the present invention, drilling time is shortened by rapid drilling along the horizontal wells, the permeability of the reservoirs can be effectively improved by fracturing for fracture forming, the stability of the reservoirs can be improved by injecting by the combined exploitation method of depressurization of the horizontal wells and heat injection.
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公开(公告)号：US12000245B2
公开(公告)日：2024-06-04
申请号：US18341813
申请日：2023-06-27
发明人： Jianbo Zhang , Zhiyuan Wang , Xiaohui Sun , Baojiang Sun , Hui Liu , Shikun Tong , Qingwen Kong , Peng Liu
CPC分类号： E21B41/0099
摘要： An apparatus for preventing and controlling secondary generation of hydrates in a wellbore during depressurization exploitation of offshore natural gas hydrates includes a gas recovery pipe column, a water recovery pipe column, a gas-liquid mixed transportation pipe section, a data collecting and processing unit, and a reaction control apparatus; according to characteristics of different exploitation pipe columns, three injection pipelines and three monitoring points are arranged to predict dynamic changes in a secondary generation risk of the hydrates throughout the wellbore; measures for preventing and controlling the secondary generation of the hydrates are taken at different pipe column positions by the integrated utilization of inhibitor injection, heating for pipe columns, the additional arrangement of electric submersible pumps, and other methods.
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公开(公告)号：US10337267B1
公开(公告)日：2019-07-02
申请号：US16122656
申请日：2018-09-05
发明人： Zhiyuan Wang , Shaowei Pan , Baojiang Sun , Jianbo Zhang , Jing Yu
摘要： The invention relates to the field of stratum drilling, and in particular to a control method and a control device for drilling operations. The control method comprises: detecting whether an overflow occurs in a well; controlling the wellhead back pressure based on a preset bottom hole pressure when no overflow occurs in the well, in order to keep the bottom hole pressure stable; and performing a shut-in operation and controlling the wellhead back pressure based on the increase in fluid discharge returned from an annulus of the well when an overflow occurs in the well, so as to keep the bottom hole pressure stable and prevent the gas in the stratum from continuing to invade into the drilling fluid during the process that the overflow drilling fluid is discharged from the bottom of the well. The control method and control device make it possible to prevent drastic fluctuation of the wellhead back pressure caused by the expansion of the invaded gases during the discharge thereof during the drilling operation, thereby realizing the stable control of the wellhead back pressure.
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公开(公告)号：US11952869B1
公开(公告)日：2024-04-09
申请号：US18341816
申请日：2023-06-27
申请人： CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) , SHANDONG PENGBO SAFETY AND ENVIRONMENTAL PROTECTION SERVICE CO., LTD.
发明人： Jianbo Zhang , Zhiyuan Wang , Yuting Wang , Baojiang Sun , Jie Zhong , Jihao Pei , Nan Ma , Xueqi Liu , Junjie Hu
CPC分类号： E21B41/0099 , E21B7/046 , E21B33/138 , E21B43/24 , E21B43/26 , E21B43/305 , E21B49/00
摘要： A high-efficiency yield-increasing exploitation method for natural gas hydrates includes steps of drilling of natural gas hydrate reservoirs along horizontal wells, seepage increasing by fracturing for fracture forming and stability improvement by grouting in the natural gas hydrate reservoirs, and yield improvement by combined exploitation of depressurization of the horizontal wells and heat injection; according to the present invention, drilling time is shortened by rapid drilling along the horizontal wells, the permeability of the reservoirs can be effectively improved by fracturing for fracture forming, the stability of the reservoirs can be improved by injecting foam cement slurry into the reservoirs, and the yield of the natural gas hydrates can be improved by the combined exploitation method of depressurization of the horizontal wells and heat injection.
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公开(公告)号：US20240084675A1
公开(公告)日：2024-03-14
申请号：US18341813
申请日：2023-06-27
发明人： Jianbo Zhang , Zhiyuan Wang , Xiaohui Sun , Baojiang Sun , Hui Liu , Shikun Tong , Qingwen Kong , Peng Liu
IPC分类号： E21B41/00
CPC分类号： E21B41/0099
摘要： An apparatus for preventing and controlling secondary generation of hydrates in a wellbore during depressurization exploitation of offshore natural gas hydrates includes a gas recovery pipe column, a water recovery pipe column, a gas-liquid mixed transportation pipe section, a data collecting and processing unit, and a reaction control apparatus; according to characteristics of different exploitation pipe columns, three injection pipelines and three monitoring points are arranged to predict dynamic changes in a secondary generation risk of the hydrates throughout the wellbore; measures for preventing and controlling the secondary generation of the hydrates are taken at different pipe column positions by the integrated utilization of inhibitor injection, heating for pipe columns, the additional arrangement of electric submersible pumps, and other methods.
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公开(公告)号：US11002126B2
公开(公告)日：2021-05-11
申请号：US17110354
申请日：2020-12-03
发明人： Zhiyuan Wang , Jianbo Zhang , Baojiang Sun , Wenqiang Lou , Xiaohui Sun , Zheng Liu , Shikun Tong
IPC分类号： E21B44/06 , E21B41/00 , E21B47/008 , E21B47/07 , E21B47/08 , E21B47/047
摘要： An active control method and system for wellbore pressure in open-cycle drilling in marine natural gas hydrates. The system comprises a drilling system, a drilling fluid injection system, and a data processing system for conducting the drilling operation.
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公开(公告)号：US20170089850A1
公开(公告)日：2017-03-30
申请号：US15270594
申请日：2016-09-20
发明人： Jintang Wang , Baojiang Sun , Yun Liu , Zhiyuan Wang , Hao Li , Jianbo Zhang
IPC分类号： G01N25/00
CPC分类号： G01N25/00 , E21B21/062 , E21B43/2405 , E21B43/267
摘要： The present invention relates to a device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities. The device for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities comprises a supercritical carbon dioxide fracturing fluid throttling coefficient measurement system and a supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus; the supercritical carbon dioxide fracturing fluid throttling coefficient measurement system determines throttling coefficient of a high temperature and high pressure supercritical carbon dioxide fracturing fluid, and the supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus determines viscosity of the high temperature and high pressure supercritical carbon dioxide fracturing fluid.
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9.发明授权Device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities 有权在不同粘度下测量超临界二氧化碳压裂液节流系数的装置和方法公开(公告)号：US09594038B1
公开(公告)日：2017-03-14
申请号：US15270594
申请日：2016-09-20
发明人： Jintang Wang , Baojiang Sun , Yun Liu , Zhiyuan Wang , Hao Li , Jianbo Zhang
CPC分类号： G01N25/00 , E21B21/062 , E21B43/2405 , E21B43/267
摘要： The present invention relates to a device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities. The device for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities comprises a supercritical carbon dioxide fracturing fluid throttling coefficient measurement system and a supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus; the supercritical carbon dioxide fracturing fluid throttling coefficient measurement system determines throttling coefficient of a high temperature and high pressure supercritical carbon dioxide fracturing fluid, and the supercritical carbon dioxide fracturing fluid viscosity adjustment apparatus determines viscosity of the high temperature and high pressure supercritical carbon dioxide fracturing fluid.
摘要翻译： 本发明涉及一种在不同粘度下测量超临界二氧化碳压裂液节流系数的装置和方法。 用于测量超临界二氧化碳压裂液在不同粘度下的节流装置的装置包括超临界二氧化碳压裂液节流系数和超临界二氧化碳压裂液粘度调节装置; 超临界二氧化碳压裂液节流系数测定系统确定高温高压超临界二氧化碳压裂液的节流系数，超临界二氧化碳压裂液粘度调节装置测定高温高压超临界二氧化碳压裂液的粘度 。
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