Chinese Academy of Sciences

Yanzhi Hu

Bo Zheng

Shouding Li

Guanfang Li

Tianqiao Mao

Xiao Dong Li

Zhaobin Zhang

Jianming He

Xiao Li

Tao Xu

Xiukuo Sun

A low-to-medium maturity shale oil extraction system based on curtailed power heating includes a transmission line with an input terminal electrically connected to curtailed power from a wind and PV power generation base and an output terminal electrically connected to an input terminal of a surface control platform, where downhole electric heaters are located inside a heating well; the heating well penetrates through an upper sealing layer and is located in a reservoir; downhole temperature and pressure monitoring controllers are provided in the heating well; the downhole temperature and pressure monitoring controller is electrically connected to the downhole electric heater; and a production well penetrates through the upper sealing layer and is located at a side of the heating well adjacent to the ground in the reservoir. The system avoids resource waste caused by power curtailment, enhances energy utilization efficiency, and improves the mobility and recoverability of shale oil.

Low-to-medium maturity shale oil extraction system based on curtailed power heating

A multifunctional and visual rock triaxial testing system is provided. The multifunctional and visual rock triaxial testing system includes an axial loading system, a high-energy accelerator computerized tomography (CT) scanning system, a turntable system, a triaxial pressure cell, a fluid fracturing pump, a temperature pump, a confining pressure loading pump, a power oil source, and an integrated control console, where the turntable system is configured to drive the high-energy accelerator CT scanning system to rotate, so as to scan an internal structure of a rock sample; and the triaxial pressure cell and the fluid fracturing pump are configured to conduct compression and fracturing tests on the rock sample, respectively.

Multifunctional and visual rock triaxial testing system

A rock true-triaxial testing system based on computerized tomography (CT) scanning aims to solve problems in the prior art, that is, the rigidity of the frame in the testing system is insufficient; high-pressure lines, wires, and signal lines are entangled when rotating; and the reaction frame and loading actuators obstruct the ray. The rock true-triaxial testing system includes a true-triaxial loading system and a high-energy accelerator-based CT scanning system, where the high-energy accelerator-based CT scanning system is located inside the true-triaxial loading system, and the high-energy accelerator-based CT scanning system is configured to image an internal structure of a cubic rock sample and continuously apply a stress to the cubic rock sample through a plurality of piston extension rods in the true-triaxial loading system. The rock true-triaxial testing system reduces radiation attenuation, and ensures imaging quality and a stable and smooth loading process.

Rock true-triaxial testing system based on computerized tomography (CT) scanning

A multi-stage perforation and shock wave combined device and method for initial fracture enhancement are provided. The multi-stage perforation and shock wave combined device for initial fracture enhancement includes a perforating gun and a shock wave excitation nipple, where the perforating gun is configured to fire perforating bullets into a formation to form initial fractures; the shock wave excitation nipple is connected to the perforating gun, and includes an energetic rod capable of exploding after excitation and a feeding assembly; the feeding assembly includes a pushing head, a reciprocating spring, and a feeding spring; and the reciprocating spring is configured to push the pushing head, so as to push a spare energetic rod into a target position.

Multi-stage perforation and shock wave combined device and method for initial fracture enhancement

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Beijing, China

Yanzhi Hu