-
公开(公告)号：US11946350B2
公开(公告)日：2024-04-02
申请号：US17925599
申请日：2021-05-25
发明人： Jing Bai , Jichuan Zhang , Dengyun Lu , Lei Li , Chongjun Huang , Lichun Jia , Chong Liao , Liexiang Han , Dejun Zhang , Gui Tang
CPC分类号： E21B43/126 , E21B34/066 , E21B47/18
摘要： A method for remotely shutting down a downhole unit of a rotary steering system from ground includes steps of: a: calculating a pressure difference P1 between a front end and a rear end of the drill water hole; b: calculating an extension loss ΔP; c: calculating a pressure P2 at the riser after turning on the downlink device; d: calculating an opening area S1 of the throttle valve of the downlink device; and e: adjusting the throttle valve to a calculated opening degree; automatically targeting the function block that needs to be cut off according to a flow change detected downhole, and shutting down the downhole unit. The method can realize self-protection and continuous operation of the entire rotary steering system, reduce frequency of inspection that needs to pull back the drill when the rotary steering system is abnormal, improve drilling efficiency, and reduce costs.
-
公开(公告)号：US20230193729A1
公开(公告)日：2023-06-22
申请号：US17925599
申请日：2021-05-25
发明人： Jing Bai , Jichuan Zhang , Dengyun L Lu , Lei Li , Chongjun Huang , Lichun Jia , Chong Liao , Liexiang Han , Dejun Zhang , Gui Tang
CPC分类号： E21B43/126 , E21B34/066 , E21B47/18
摘要： A method for remotely shutting down a downhole unit of a rotary steering system from ground includes steps of: a: calculating a pressure difference P1 between a front end and a rear end of the drill water hole; b: calculating an extension loss ΔP; c: calculating a pressure P2 at the riser after turning on the downlink device; d: calculating an opening area S1 of the throttle valve of the downlink device; and e: adjusting the throttle valve to a calculated opening degree; automatically targeting the function block that needs to be cut off according to a flow change detected downhole, and shutting down the downhole unit. The method can realize self-protection and continuous operation of the entire rotary steering system, reduce frequency of inspection that needs to pull back the drill when the rotary steering system is abnormal, improve drilling efficiency, and reduce costs.
-
公开(公告)号：US20230193714A1
公开(公告)日：2023-06-22
申请号：US17925605
申请日：2021-05-25
发明人： Jichuan Zhang , Dengyun Lu , Jing Bai , Yi Xie , Lei Li , Kexu Chen , Chongjun Huang , Lichun Jia , Dejun Zhang , Zhilin Li , Bin Mao
CPC分类号： E21B31/03 , E21B7/04 , E21B34/14 , E21B41/0078
摘要： A jet flow adjustment method for rotary steerable downhole release relates to a technical field of downhole drilling equipment for oil wells, which includes steps of: defining a diversion ratio p of a jet nozzle (2) by a ground control system according to a cleaning requirement of a cuttings bed; and sending the diversion ratio p of the jet nozzle (2) to a control unit of a downhole rotary steerable system; and determining an opening area s of the jet nozzle (2) by the control unit of the downhole rotary steerable system according to the diversion ratio p of the jet nozzle (2) and an equivalent channel area S of a drilling tool, wherein a calculation formula is: s=p*S/(1−p); controlling an adjustable bypass valve (3) by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle (2), so as to control an overlapping area between sector holes (9) of a rotor end (7) and a stator end (8), thereby opening the jet nozzle (2) for release. The present invention has simple control and strong release ability, which can effectively solve the jamming problem of the rotary steerable downhole tool.
-
公开(公告)号：US20230204814A1
公开(公告)日：2023-06-29
申请号：US17927749
申请日：2021-05-25
发明人： Dengyun Lu , Jing Bai , Lei Li , Jichuan Zhang , Chongjun Huang , Chong Liao , Junbin Chen , Bin Zhang , Zhigang Dong , Xinjian Wang
IPC分类号： G01V5/12
CPC分类号： G01V5/12
摘要： A gamma fusion computing method based on gamma probe parameters is provided, which relates to the technical field of oil drilling equipment while drilling, including: acquiring measurement values of two gamma probes in one continuous rotation period, and utilizing a mean value and a variance of the measurement values in the one rotation period as an evaluation reference value of each gamma probe; determining whether the gamma probes are abnormal, if the two gamma probes are both normal, utilizing the weight values to perform weight fusion on the measured values measured by two gamma probes, and if there is a gamma probe that is abnormal, then multiplying the average of the measured values of the normal gamma probe in the rotation period by 2 as a gamma output value for output. The gamma fusion computing method is capable of accurately determine the abnormal conditions of the gamma probes and effectively resolve the abnormal output. If there is no abnormal gamma probe, the outputted gamma value is also more accurate, which may do well in providing the engineering and technical personnel with correct identification.
-
公开(公告)号：US11982146B2
公开(公告)日：2024-05-14
申请号：US17925605
申请日：2021-05-25
发明人： Jichuan Zhang , Dengyun Lu , Jing Bai , Yi Xie , Lei Li , Kexu Chen , Chongjun Huang , Lichun Jia , Dejun Zhang , Zhilin Li , Bin Mao
CPC分类号： E21B31/03 , E21B7/04 , E21B21/103 , E21B34/14 , E21B37/00 , E21B41/0078
摘要： A jet flow adjustment method for rotary steerable downhole release includes steps of: defining a diversion ratio p of a jet nozzle by a ground control system; and sending the diversion ratio p of the jet nozzle to a control unit of a downhole rotary steerable system; and determining an opening areas of the jet nozzle by the control unit according to the diversion ratio p of the jet nozzle and an equivalent channel area S of a drilling tool; controlling an adjustable bypass valve by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle, so as to control an overlapping area between sector holes of a rotor end and a stator end, thereby opening the jet nozzle for release. The present invention has simple control and strong release ability.
-
6.发明公开公开(公告)号：US20230223789A1
公开(公告)日：2023-07-13
申请号：US17928268
申请日：2021-05-25
发明人： Jing Bai , Lei LI , Dengyun Lu , Jichuan Zhang , Yi Xie , Weicheng Li , Lichun Jia , Chongjun Huang , Liming Fan
IPC分类号： H02J50/12
摘要： A system for dynamically adjusting coupling coefficients of a non-contact transmission magnetic mechanism, wherein a power supply end is connected to a non-contact transmission electric energy conversion module and a magnetic field regulation electric conversion module respectively by means of an input power consumption measurement unit, the non-contact transmission electric energy conversion module is connected to a transmitting coil by means of a tuning wave-blocking circuit, a receiving coil is provided corresponding to the transmitting coil, the receiving coil is provided on the wave-blocking circuit, the wave-blocking circuit is connected to a load end by means of a rectifying and voltage stabilizing circuit and an output power consumption measurement module, signal loading and extraction modules having a controller and a signal modulation and demodulation module are connected in parallel to two ends of the transmitting coil and the receiving coil
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.02 秒)
