US 11,905,829 B2
Integrated logging instrument for coring and sampling
Tao Lu, Hebei (CN); Yongren Feng, Hebei (CN); Changgui Xu, Hebei (CN); Zhibin Tian, Hebei (CN); Xiaofei Qin, Hebei (CN); Minggao Zhou, Hebei (CN); Xiaodong Chu, Hebei (CN); Tiemin Liu, Hebei (CN); Yongzeng Xue, Hebei (CN); Zanqing Wei, Hebei (CN); and Lin Huang, Hebei (CN)
Assigned to China Oilfield Services Limited, Tianjin (CN); and China National Offshore Oil Corporation, Beijing (CN)
Appl. No. 17/420,108
Filed by China Oilfield Services Limited, Tianjin (CN); and China National Offshore Oil Corporation, Beijing (CN)
PCT Filed May 14, 2020, PCT No. PCT/CN2020/090267
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2021/135036, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 202010005687.3 (CN), filed on Jan. 3, 2020.
Prior Publication US 2022/0316290 A1, Oct. 6, 2022
Int. Cl. E21B 49/06 (2006.01); E21B 49/10 (2006.01); G01V 11/00 (2006.01)
CPC E21B 49/06 (2013.01) [E21B 49/10 (2013.01); G01V 11/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated logging instrument for coring and sampling, comprising a downhole main body and a ground system, wherein the downhole main body is connected with the ground system through a long cable, the downhole main body comprises a coring and sampling mechanism, a power mechanism and an energy storage mechanism, the coring and sampling mechanism comprises a coring assembly for drilling a core and a pushing and setting assembly for downhole fixation; the power mechanism is arranged at an upper end of the coring and sampling mechanism and includes a motor, a piston structure and a pump body, the piston structure and the pump body are respectively arranged at two output ends of the motor, the piston structure is configured to provide suction power for the pushing and setting assembly to extract formation fluid, the pump body is configured to provide hydraulic power for radial extension and retraction of a coring bit, a probe and a pushing arm of the coring and sampling mechanism; the energy storage mechanism is arranged at a lower end of the coring and sampling mechanism, the energy storage mechanism is configured to store pressure energy of the power mechanism, and is able to serve as a temporary power source, the energy storage mechanism is configured to provide temporary power for the downhole main body to ensure safety of the downhole main body.