Sichuan University

Shenzhen University

Ru Zhang

Heping Xie

Zetian Zhang

Zhilong Zhang

Ling Chen

Mingzhong Gao

Li Ren

Zhiqiang He

Jun Guo

Cong Li

Yiqiang Lu

Weiqiang Ling

Yihang Li

Kun Xiao

Chendi Lou

Jianfeng Liu

Wei Huang

Jianan Li

Lingzhi Xie

Heng Gao

Yufei Wang

Feng Gao

Yang Yang

Yang Ju

Fubao Zhou

Yingke Liu

Yanan Gao

Anlin Zhang

Lanbin Zhang

Qijun Hao

A rolling and sliding adaptive device for guiding and fixing a drill pipe includes a mounting platform, where the mounting platform is provided with a through hole for the drill pipe to pass through. Multiple rolling and sliding support mechanisms are arranged around the through hole. The rolling and sliding support mechanisms each include a support seat. The support seat is provided with a contact element telescopic and swingable on the support seat. A telescopic drive mechanism is provided between the contact element and the support seat. The contact elements on the multiple rolling and sliding support mechanisms form a funnel-shaped structure with a large upper part and a small lower part around the through hole. The rolling and sliding adaptive device is used on a deep in-situ high-fidelity coring calibration platform for accurate positioning of an assembly process of a multi-section drill pipe bin.

Rolling and sliding adaptive device for guiding and fixing drill pipe

An assembly method for a deep in-situ high-fidelity coring calibration platform includes the following steps: S: fixing a core bin assembly subsystem on a preset ground foundation and fixing a simulator of a core bin on a mounting base plate of the core bin assembly subsystem; S: driving a cylinder and driving the mounting base plate to move to a preset position; S: driving a servo motor and controlling two clips to move close to each other; S: fixing a drill pipe bin assembly subsystem on the ground foundation; S: assembling multiple sections of a drill pipe bin in turn; aligning and connecting a bottom of the drill pipe bin to the simulator, and aligning and communicating the top of the drill pipe bin with the lower part of an adaptive drill pipe guide structure; and S: driving the adaptive drill pipe guide structure to perform accurate positioning.

Assembly method for deep in-situ high-fidelity coring calibration platform

A real-time temperature-pressure detection and rapid processing system for a calibration platform, comprises an inner return pipe, and a water supply pipe is provided therein with an inner water supply pipe. An outer wall of the inner water supply pipe is connected with an inner wall of the water supply pipe through multiple springs. An outer wall of the inner return pipe is connected with an inner wall of a return pipe through multiple springs. The return pipe and the water supply pipe are made of a thermosetting polymer material. The multiple springs, the inner water supply pipe, and the inner return pipe are covered with a heat conducting material. The system further includes a temperature-pressure detection assembly. The assembly includes multiple infrared sensors arranged at two sides of the return pipe and the water supply pipe, a booster pump, a heater, and infrared sensors connected with a control unit.

Real-time temperature-pressure detection and rapid processing system for calibration platform

A bottom cylinder for a high-temperature and high-pressure environment simulator of a high-fidelity corer is provided. The bottom cylinder includes a cylinder barrel. The bottom of the cylinder barrel is provided with a cylinder base. The piston is provided inside the cylinder barrel and divides an inner cavity of the cylinder barrel into a rodless cavity and a rod cavity. The piston is provided with a piston rod. The outer wall of the cylinder barrel is provided with an oil inlet hole communicated with the rodless cavity, an oil outlet hole communicated with the rod cavity, and a reserved hole. The lower end surface of the piston is provided with a first buffer ring, and the upper surface of the cylinder base is provided with a second buffer ring mated with the first buffer ring. The bottom cylinder is applied to the simulator for oil and gas resource exploitation.

Bottom cylinder for high-temperature and high-pressure environment simulator

A high-temperature and high-pressure simulator for a deep in-situ environment is provided. The simulator includes a high-fidelity sample chamber, where a lower end of the high-fidelity sample chamber is provided with a bottom cylinder. A lower end of the bottom cylinder is provided on a base. A piston rod of the bottom cylinder extends into the high-fidelity sample chamber, and an upper end of the piston rod is provided with a rock sample seat. An upper end of the high-fidelity sample chamber is provided with a rock sample cap. The top of the high-fidelity sample chamber is sealed by an end cap of the high-fidelity sample chamber. An upper end of the end cap of the high-fidelity sample chamber is provided with a multi-section coring drill chamber. The uppermost section of the coring drill chamber is connected to a lift cylinder.

High-temperature and high-pressure simulator for deep in-situ environment

A drilling fluid channel structure of a core drilling rig includes a fluid channel activation module, a pressure relief module, a flow diverging and blocking module, a driving fluid channel and a cooling fluid channel. The fluid channel activation module, the pressure relief module and the flow diverging and blocking module are connected sequentially from the rear to the front. The driving fluid channel and the cooling fluid channel are connected at the rear side thereof to the flow diverging and blocking module. The driving fluid channel includes a driving section located between a stator and a rotor of a driving motor. The driving fluid channel is provided with a driving fluid outlet at the front side of the driving section. The cooling fluid channel passes through a layer disposed between an integrity-preserving compartment and an outer barrel.

Drilling fluid channel structure of core drilling rig

A drilling control mechanism of a core drilling rig has a tooth drill and a core drilling rig. The core drilling rig is inside the tooth drill and engages with the drill in a sliding manner. A locking recess is formed at an inner wall of the tooth drill. A locking latch recess is formed at an outer wall of the core drilling rig and has a locking latch therein. The locking latch has a spring. When the locking recess is directly opposite the locking latch recess, the spring extends and the locking latch partially enters the locking recess. The core drilling rig has a central rod, a fluid channel activation module, an outer barrel, and outer barrel unlocking module and a flow diverging module. The central rod passes through the inner cavities of the fluid channel activation module, the outer barrel unlocking module and the flow diverging module.

Drilling control mechanism of core drilling rig

A control mechanism of a core drilling rig includes a central rod () and an outer barrel (). The central rod () passes through, from the rear to the front, the inner cavities of a fluid channel activation module, an outer barrel unlocking module, a flow diverging module, and a coring barrel connecting module. The coring barrel connecting module comprises a core tube connecting pipe (), a core ring bearing (), a bearing inner ring (), a ball A () and a ball B (). The core tube connecting pipe () is connected at the front side thereof to the coring barrel (). The bearing inner ring () is inside the core tube connecting pipe (). The core ring bearing () is connected to an inner wall of the outer barrel ().

Control mechanism of core drilling rig

A coring drill tool driving structure has a driving motor (), an outer cylinder () and a coring drill tool (). The driving motor comprises an outer rotor () and an inner stator (), the inner wall of the outer rotor and the outer wall of the inner stator are provided with ribs () mutually matched, the outer rotor and inner stator are in clearance fit, the clearance between the outer rotor and the inner stator is a driving liquid flow path (), the outer rotor length is smaller than the inner stator length, the outer rotor is located between front and rear ends of the inner stator, the outer rotor is connected to the outer cylinder, a front end of the outer cylinder is connected to the coring drill tool, and a rear end of the inner stator is connected to a coupling ().

Coring drill tool driving structure

A device for constructing an underground reservoir by dissolving limestone using carbon dioxide. The device includes a COstorage tank; an absorption tower; a decompression valve; a gas-liquid separator; a crystallizer; a vacuum pump; a buffer tank; a first booster pump; a second booster pump; and a third booster pump. The decompression valve is connected to a limestone layer, and is connected to the gas-liquid separator. The absorption tower is connected between the gas-liquid separator and the limestone layer.

Apparatus for making underground reservoir

A method for building an underground storehouse by dissolving limestone with carbon dioxide, the method comprising the following steps: a.) drilling two wells extending from the ground surface () to a limestone layer (), building a channel () allowing the two wells to communicate, and installing casing pipes () respectively in the two wells; b.) introducing COgas having at least 1 MPa of pressure into a COabsorbing solution having the same pressure to form a COsolution, flowing the COsolution into underground via the casing pipe () to react with the limestone to form a calcium bicarbonate solution, forming a cavern in the meanwhile, and discharging the calcium bicarbonate solution via the other casing pipe (); c.) decompressing the discharged calcium bicarbonate solution to decompose the calcium bicarbonate contained in the solution into CO, water and calcium carbonate, and recycling the separated COabsorption solution and the CO; repeating steps b.) and c.) until a cavern meeting design requirements is formed, and discharging the solution from the cavern to form the underground storehouse (). Also disclosed is a device for building an underground storehouse by dissolving limestone with carbon dioxide, the device comprising a COstorage tank (), an absorption tower (), a crystallizer (), a pressure relief valve (), a gas-liquid separator (), a vacuum pump (), a buffer () and booster pumps ().

Method and device for building underground storehouse by dissolving limestone with carbon dioxide

A pneumatic fracturing method for exploiting shale gas, the method including: 1) applying a compressed gas for a first period of time at a first pressure to a shale formation; 2) applying the compressed gas for a second period of time at a second pressure to the shale formation; and 3) repeating steps 1) and 2) to produce fissures in the shale formation. A temperature of the compressed gas is at least 80&#xb0; C. A maximum pressure of the compressed gas is at least 25 megapascal, and a minimum pressure of the compressed gas is between &#xbc; and &#x2153; of the maximum pressure.

Growing community of inventors

Chengdu, China

Ru Zhang