US 12,480,365 B2
State self-adaptive turbine type pulse generator and downhole drilling tool
Jiachang Wang, Beijing (CN); Guangjun Ma, Beijing (CN); Haiping Zhang, Beijing (CN); Yanbin Zang, Beijing (CN); Lingchao Xuan, Beijing (CN); Dongqing Zhang, Beijing (CN); Jianhua Liu, Beijing (CN); Renlong Zhang, Beijing (CN); and Lishuang Wang, Beijing (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and SINOPEC PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD., Beijing (CN)
Appl. No. 18/724,512
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and SINOPEC PETROLEUM ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD., Beijing (CN)
PCT Filed Sep. 22, 2022, PCT No. PCT/CN2022/120521
§ 371(c)(1), (2) Date Jun. 26, 2024,
PCT Pub. No. WO2023/124294, PCT Pub. Date Jul. 6, 2023.
Claims priority of application No. 202111615130.2 (CN), filed on Dec. 27, 2021.
Prior Publication US 2025/0092740 A1, Mar. 20, 2025
Int. Cl. E21B 7/24 (2006.01); E21B 4/02 (2006.01); E21B 6/06 (2006.01)
CPC E21B 7/24 (2013.01) [E21B 4/02 (2013.01); E21B 6/06 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A turbine type pulse generator for downhole drilling tool, comprising:
a pulse generating device that comprises a turbine housing, a turbine shaft concentrically arranged inside the turbine housing, a turbine mechanism arranged around the turbine shaft, and a valve disc mechanism provided at a lower end of the turbine shaft, the turbine mechanism being configured to drive the turbine shaft to rotate relative to the turbine housing under an impact of drilling fluid so that a flow area of the valve disc mechanism is changed periodically to generate pressure pulses; and
an automatic control mechanism configured to control a state of the pulse generating device,
wherein the automatic control mechanism is configured to keep the turbine shaft static relative to the turbine housing in a circumferential direction during composite drilling so that the pulse generating device is in a non-working state, and to drive the turbine shaft to rotate relative to the turbine housing under an impact of the turbine mechanism during sliding drilling so that the pulse generating device is in a working state.