Patents by Inventor Chuanjie Zhu
Chuanjie Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11060384Abstract: In a method, a gyroscope and an endoscopic camera are first used to investigate coal-seam strike trend, coal-seam dip trend, and coal-seam thickness data of a to-be-extracted area. According to gas extraction standard requirements of a to-be-extracted area, boreholes are then designed and constructed, and trajectories of boreholes are tracked to obtain a correspondence relationship between designed borehole parameters and actual borehole trajectory parameters. Next, drilling parameters are adjusted according to the correspondence relationship between the designed borehole parameters and the actual borehole parameters to construct boreholes at predetermined borehole locations. Subsequently, the boreholes are connected to an extraction pipeline, and gas extraction flow rates and gas extraction amounts per meter of the boreholes are observed. Eventually, other boreholes are designed and constructed according to the adjusted borehole construction parameters and extraction data.Type: GrantFiled: December 4, 2017Date of Patent: July 13, 2021Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Chuanjie Zhu, Baiquan Lin, Zishan Gao, Ximiao Lu
-
Publication number: 20210040822Abstract: A method for precisely extracting coal-mine gas is suitable for improving the accuracy of design and construction of coal-mine gas extraction and ensuring the efficiency of borehole extraction. In the method, a gyroscope and an endoscopic camera are first used to investigate coal-seam strike trend, coal-seam dip trend, and coal-seam thickness data of a to-be-extracted area. According to gas extraction standard requirements of a to-be-extracted area, boreholes are then designed and constructed, and trajectories of boreholes are tracked to obtain a correspondence relationship between designed borehole parameters and actual borehole trajectory parameters. Next, drilling parameters are adjusted according to the correspondence relationship between the designed borehole parameters and the actual borehole parameters to construct boreholes at predetermined borehole locations.Type: ApplicationFiled: December 4, 2017Publication date: February 11, 2021Inventors: Chuanjie ZHU, Baiquan LIN, Zishan GAO, Ximiao LU
-
Patent number: 10858913Abstract: A permeability enhancement method for coalbed methane wells by using electric pulse detonation fracturing technology is applicable to exploitation of coalbed methane wells in coal beds with low permeability. Firstly, a positive electrode coalbed methane wellbore and a negative electrode coalbed methane wellbore are constructed from the ground surface to a coal bed. A fixed platform installed with a positive electrode and a high-voltage pulse device are placed, by using a derrick, downwards to a predetermined permeability enhancement portion of the coal bed in the positive electrode coalbed methane wellbore, and another fixed platform installed with a negative electrode is placed, by using a derrick, downwards to a predetermined permeability enhancement portion of the coal bed in the negative electrode coalbed methane wellbore.Type: GrantFiled: December 15, 2016Date of Patent: December 8, 2020Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Bai quan Lin, Fazhi Yan, Xiangliang Zhang, Jia Kong, Ting Liu, Chuanjie Zhu
-
Publication number: 20200240246Abstract: A permeability enhancement method for coalbed methane wells by using electric pulse detonation fracturing technology is applicable to exploitation of coalbed methane wells in coal beds with low permeability. Firstly, a positive electrode coalbed methane wellbore and a negative electrode coalbed methane wellbore are constructed from the ground surface to a coal bed. A fixed platform installed with a positive electrode and a high-voltage pulse device are placed, by using a derrick, downwards to a predetermined permeability enhancement portion of the coal bed in the positive electrode coalbed methane wellbore, and another fixed platform installed with a negative electrode is placed, by using a derrick, downwards to a predetermined permeability enhancement portion of the coal bed in the negative electrode coalbed methane wellbore.Type: ApplicationFiled: December 15, 2016Publication date: July 30, 2020Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Bai quan LIN, Fazhi YAN, Xiangliang ZHANG, Jia KONG, Ting LIU, Chuanjie ZHU
-
Patent number: 10378327Abstract: A gas extraction method in which high energy gas fracturing technology is used to form a fracture network in a thermal injection borehole. Then high-pressure, cyclically temperature-changing steam is injected into the borehole using a spinning oscillating-pulse jet nozzle to form oscillating superheated steam, alternatingly impacting and heating the coal body. The high energy gas forms a fracture network that provides channels for passage of the superheated steam, while oscillating changes in steam temperature and pressure also promote crack propagation and perforation of the coal body; the combined effect of alternation of the two enhances gas desorption and extraction efficiency.Type: GrantFiled: December 22, 2015Date of Patent: August 13, 2019Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Baiquan Lin, Quanle Zou, Ting Liu, Chang Guo, Chuanjie Zhu, Jia Kong, Fazhi Yan, Hao Yao, Yidou Hong
-
Patent number: 10370942Abstract: A method for combining integrated drilling, flushing and slotting with thermal injection to enhance coalbed gas extraction, applicable to managing gas extraction from microporous, low-permeability, high-adsorption coalbed areas. A gas extraction borehole is drilled within a certain distance of a predetermined drilling, flushing and slotting borehole, and, once sealed, is used for gas extraction. An integrated drilling, flushing and slotting drill bit is used to sink the borehole, which is then sealed. Concentration variation in the gas extraction borehole is monitored in real time, and when concentration is below 30%, borehole is opened and high-temperature steam is injected by means of a steam generator, after which the borehole is again closed.Type: GrantFiled: December 21, 2015Date of Patent: August 6, 2019Assignee: China University of Mining and TechnologyInventors: Baiquan Lin, Ting Liu, Quanle Zou, Chang Guo, Chuanjie Zhu, Hao Yao, Fazhi Yan, Jia Kong, Yidu Hong
-
Patent number: 10060238Abstract: A method for combining integrated drilling and slotting with oscillating thermal injection to enhance coalbed gas extraction, applicable to managing gas extraction from microporous, low-permeability, high-adsorption coal seam areas. A number of slots are formed within a thermal injection/extraction borehole by means of integrated drilling and slotting technology; a steam generator, is then used to three high-pressure, cyclically temperature-changing steam into said borehole; the steam passing through a spinning, oscillating-pulse jet nozzle forms an oscillating superheated steam, heating the coal body. The present method overcomes the limitations of simple permeability-increasing techniques, the slotting by means of hydraulic.Type: GrantFiled: December 22, 2015Date of Patent: August 28, 2018Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Baiquan Lin, Chang Guo, Quanle Zou, Ting Liu, Chuanjie Zhu, Jia Kong, Fazhi Yan, Hao Yao, Yidu Hong
-
Publication number: 20180209259Abstract: A gas extraction method in which high energy gas fracturing technology is used to form a fracture network in a thermal injection borehole. Then high-pressure, cyclically temperature-changing steam is injected into the borehole using a spinning oscillating-pulse jet nozzle to form oscillating superheated steam, alternatingly impacting and heating the coal body. The high energy gas forms a fracture network that provides channels for passage of the superheated steam, while oscillating changes in steam temperature and pressure also promote crack propagation and perforation of the coal body; the combined effect of alternation of the two enhances gas desorption and extraction efficiency.Type: ApplicationFiled: December 22, 2015Publication date: July 26, 2018Inventors: Baiquan LIN, Quanle Zou, Ting Liu, Chang Guo, Chuanjie Zhu, Jia Kong, Fazhi Yan, Hao Yao, Yidou Hong
-
Publication number: 20180209255Abstract: A method for combining integrated drilling and slotting with oscillating thermal injection to enhance coalbed gas extraction, applicable to managing gas extraction from microporous, low-permeability, high-adsorption coal seam areas. A number of slots are formed within a thermal injection/extraction borehole by means of integrated drilling and slotting technology; a steam generator, is then used to three high-pressure, cyclically temperature-changing steam into said borehole; the steam passing through a spinning, oscillating-pulse jet nozzle forms an oscillating superheated steam, heating the coal body. The present method overcomes the limitations of simple permeability-increasing techniques, the slotting by means of hydraulic.Type: ApplicationFiled: December 22, 2015Publication date: July 26, 2018Inventors: Baiquan LIN, Chang GUO, Quanle ZOU, Ting LIU, Chuanjie ZHU, Jia KONG, Fazhi YAN, Hao YAO, Yidu HONG
-
Publication number: 20180112505Abstract: A method for permeability improvement for a downhole coal seam by directional fracturing with pulsed detonation waves, which is applicable to gas control in coal seam areas with high gas concentration and low air permeability. The permeability improvement method is as follows: first, drilling a pulsed detonation borehole and pulsed detonation guide boreholes from a coal roadway to a coal seam respectively; then, pushing a positive electrode connected to a positive output side of an explosion-proof high-voltage electrical pulse generator to the bottom of the pulsed detonation borehole and pushing a negative electrode connected to a negative output side of the explosion-proof high-voltage electrical pulse generator to the bottom of the pulsed detonation guide borehole; connecting the pulsed detonation borehole and the pulsed detonation guide boreholes to an extraction pipeline for gas extraction, after electrical pulsed detonation fracturing for the coal seam is carried out.Type: ApplicationFiled: December 28, 2015Publication date: April 26, 2018Inventors: Baiquan LIN, Fazhi YAN, Chuanjie ZHU, Chang GUO, Quanle ZOU, Ting LIU, Yidu HONG, Hao YAO
-
Patent number: 9951597Abstract: A method for permeability improvement for a downhole coal seam by directional fracturing with pulsed detonation waves, which is applicable to gas control in coal seam areas with high gas concentration and low air permeability. The permeability improvement method is as follows: first, drilling a pulsed detonation borehole and pulsed detonation guide boreholes from a coal roadway to a coal seam respectively; then, pushing a positive electrode connected to a positive output side of an explosion-proof high-voltage electrical pulse generator to the bottom of the pulsed detonation borehole and pushing a negative electrode connected to a negative output side of the explosion-proof high-voltage electrical pulse generator to the bottom of the pulsed detonation guide borehole; connecting the pulsed detonation borehole and the pulsed detonation guide boreholes to an extraction pipeline for gas extraction, after electrical pulsed detonation fracturing for the coal seam is carried out.Type: GrantFiled: December 28, 2015Date of Patent: April 24, 2018Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Baiquan Lin, Fazhi Yan, Chuanjie Zhu, Chang Guo, Quanle Zou, Ting Liu, Yidu Hong, Hao Yao
-
Patent number: 9869168Abstract: A method for thermal-displacement-type strengthened extraction in a drill hole, suitable for efficient gas extraction in a coal mine, the method comprising the following steps: arranging an extraction drill hole and a thermal displacement drill hole at intervals in a coal seam; continuously heating coal in the drill hole to form a stable temperature field by using a heat pipe; and significantly reducing gas adsorption potential by utilizing a heat effect, prompting gas desorption, and strengthening gas extraction. The method enlarges a range of effective pressure relief influence of a single hole, increases an extraction efficiency of gas in a coal seam by more than 40%, is safe, reliable and low-cost, and is easy to operate, saving both time and labor.Type: GrantFiled: December 9, 2015Date of Patent: January 16, 2018Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGYInventors: Baiquan Lin, Yidou Hong, Chuanjie Zhu, Hao Yao
-
Publication number: 20170152734Abstract: A method for thermal-displacement-type strengthened extraction in a drill hole, suitable for efficient gas extraction in a coal mine, the method comprising the following steps: arranging an extraction drill hole and a thermal displacement drill hole at intervals in a coal seam; continuously heating, by using a heat pipe (5), coal in the drill hole to form a stable temperature field; and significantly reducing gas adsorption potential by utilizing a heat effect, prompting gas desorption, and strengthening gas extraction. The method enlarges a range of effective pressure relief influence of a single hole, increases an extraction efficiency of gas in a coal seam by more than 40%, is safe, reliable and low-cost, and is easy to operate, and saves both time and labour.Type: ApplicationFiled: December 21, 2015Publication date: June 1, 2017Inventors: Baiquan Lin, Yidu Hong, Chuanjie Zhu, Hao Yao
-
Publication number: 20170145794Abstract: A method for combining integrated drilling, flushing and slotting with thermal injection to enhance coalbed gas extraction, applicable to managing gas extraction from microporous, low-permeability, high-adsorption coalbed areas. A gas extraction borehole is drilled within a certain distance of a predetermined drilling, flushing and slotting borehole, and, once sealed, is used for gas extraction. An integrated drilling, flushing and slotting drill bit is used to sink the borehole, which is then sealed. Concentration variation in the gas extraction borehole is monitored in real time, and when concentration is below 30%, borehole is opened and high-temperature steam is injected by means of a steam generator, after which the borehole is again closed.Type: ApplicationFiled: December 21, 2015Publication date: May 25, 2017Inventors: Baiquan Lin, Ting Liu, Quanle Zou, Chang Guo, Chuanjie Zhu, Hao Yao, Fazhi Yan, Jia Kong, Yidu Hong