China Petroleum Chemical Corporation

Sinopec Southwest Oil & Gas Company

China Petroleum & Chemical Corporation Southwest Oil & Gas Company

Zhenwei Gan

Zhimin Hou

Shunqu Hu

Bin Qi

Tao Liu

Jun Chen

Chen Chen

Shan Ren

Wei Zhao

Zhi Xie

Lei Wang

Yongmao Lin

Yijun Zhou

Jihao Wu

Qiusheng Huang

Guangquan Li

Wei Lei

Jiang Qian

Dan Hu

Jingyu Cui

Wenjiang Teng

Wenfeng Pang

Jian Pan

Qiang Wang

A new sliding sleeve relates to the technical field of oil and gas well completion and reservoir stimulation, comprising an upper connector, a lower connector, an outer housing, an inner sleeve and a shear pin. The upper connector and the lower connector are respectively connected to two ends of the outer housing, and the inner sleeve is locked in the outer housing via the shear pin, wherein a flow guiding hole is provided in the outer housing, and the inner sleeve can open or close the flow guiding hole, wherein at least two grooves for engaging with at least two corresponding tooth-shaped elements on a sliding sleeve opening tool are disposed along an axial direction in the inner sleeve, and wherein an erosion-resistant ring is embedded in the groove, and an inner diameter of the erosion-resistant ring is larger than or equal to an inner diameter of the inner sleeve.

Sliding sleeve

A sliding sleeve opening tool includes an engaging element, a ball seat and a guiding head connected in sequence, as disclosed herein. The engaging element includes at least two elastic pawls uniformly disposed in a circumferential direction and at least one engaging part disposed on an external circumferential surface of an elastic pawl, and the engaging element is further provided with a first fluid channel which runs through the engaging element. The ball seat is provided with a second fluid channel which runs through the ball seat, and within the second fluid channel a taper hole section for bearing a sealing ball is disposed, the second fluid channel being in communication with the first fluid channel. The guiding head is provided with a third fluid channel which runs through the guiding head, and the third fluid channel is in communication with the second fluid channel. The sliding sleeve opening tool has at least one of the pushing function, the fishing function, the pushing assistance function, the mud scraping function and the sealing function.

Tool for opening sliding sleeve

A device for perforating, packing, and fracturing and a tubing string comprising the device are disclosed, wherein the device comprises an upper connector, a nozzle sleeve, a mandrel, a packer, a lower connector, a first inner sleeve provided inside the upper connector, and a second inner sleeve provided inside the nozzle sleeve, further wherein the upper connector is provided with a fracturing hole, and a nozzle is provided at the nozzle sleeve.

Device for jet packing and fracturing and tubular column comprising same

A tool for perforating, packing and fracturing and a tubing string comprising the tool are disclosed. The tool comprises an upper connector, a connection sleeve, a mandrel, a packer, a lower connector, and an inner sleeve. The upper connector is provided with communication holes, and a nozzle is provided at each communication hole. The inner sleeve is provided on an inner wall of the upper connector to block the nozzle. Under an action of a fracturing fluid, the inner sleeve moves downwards to expose the nozzle, and the packer is packed. Then, perforating is performed through the nozzle. After perforating is finished, the nozzle is configured to be lost at a communication hole, and then fracturing is performed. When the tool is used, operation cost can be reduced, and reservoir stimulation effect can be improved.

Tool for jet packing and fracturing and tubular column comprising same

A sleeve fracturing assembly includes a composite sleeve and an opening tool. The composite sleeve and the opening tool can automatically engage with each other via teeth-shaped members arranged thereon so as to open the composite sleeve. A sleeve fracturing device includes a plurality of composite sleeves and opening tools, wherein each composite sleeve and opening tool can achieve unique engagement. A method of using the sleeve fracturing device is also described.

Sleeve fracturing assembly, device using the same and method for using the same

A sleeve fracturing assembly includes a composite sleeve and an opening tool. The composite sleeve and the opening tool can automatically engage with each other via teeth-shaped members arranged thereon so as to open the composite sleeve. A sleeve fracturing device includes a plurality of composite sleeves and opening tools, wherein each composite sleeve and opening tool can achieve unique engagement. A method of using the sleeve fracturing device is also provided.

Growing community of inventors

Chengdu, China

Zhenwei Gan