China University of Petroleum

Beijing Bytedance Network Technology Co., Ltd.

Zhongwei Huang

Gensheng Li

Huaizhong Shi

Jilei Niu

Mao Sheng

Yiqun Zhang

Shouceng Tian

Xianzhi Song

Jingbin Li

Lei Wang

Xing Yao

Yu Shi

Ya Qiong Liu

Jun Dai

Chaoyang Shang

Lu Ji

Haizhu Wang

Ran Ji

Wenhao He

Jiasheng Fu

Junyu Du

Chao Xiong

Zhenliang Chen

Zongjie Mu

Xinkang Fu

Zhen Cheng

An experimental apparatus for rock-breaking through vibration impact, including a confining pressure loading assembly, a drill bit, a drill rod, a drilling fluid circulation assembly, a rotary impact assembly and an axial impact assembly. The confining pressure loading assembly is configured to apply pressures to a core sample located in a core cavity in three directions perpendicular to each other. The drill bit is capable of inserting into the core cavity to drill the core sample. The drilling fluid circulation assembly includes a drilling fluid inlet, a drilling fluid outlet and a mud pump connected therebetween. The rotary impact assembly includes a hydraulic rotary motor and a hydraulic swing motor connected to the drill rod, respectively. The axial impact assembly includes a first hydraulic cylinder, and a servo linear actuator connected to the first hydraulic cylinder and the drill rod.

Experimental apparatus for rock-breaking through vibration impact

According to embodiments of the present disclosure, a method, apparatus, device and storage medium for managing traffic data of a client application is provided. The method described herein comprises: detecting a transmission of user data of a target user from the client application to a server; analyzing the traffic data of the transmission at different layers of the transmission based on types of the traffic data; and in accordance with a determination that the analysis indicates that the traffic data satisfies a data exchange constraint corresponding to the target user, transmitting the traffic data to a server in compliance with the data exchange constraint. In this way, by analyzing the traffic data at different layers of the transmission and restricting traffic data that does not satisfy the data exchange constraint, it is possible to effectively prevent user data from being transmitted to unauthorized servers via various types of traffic data.

Method, apparatus and system for managing traffic data of client application

A plugging and wall reinforcing device and a method of using thereof. The nesting plugging and wall reinforcing device comprises an external slotted metal pipe and an internal nested blasting tool, wherein the slotted metal pipe has spiral slits or straight slits cut on a pipe wall thereof; the nested blasting tool is a mandrel having a surface provided with a plurality of explosive grooves in which explosives are placed; the slotted metal pipe is disposed around the mandrel, with a movable fit therebetween. The present invention can effectively improve the plugging success rate.

Energy-gathered bundle type nesting plugging and wall reinforcing device and application thereof in karst cave plugging

An auxiliary feeding device for a flexible pipe of a radial horizontal well, comprising an oil pipe, a steering gear connected to the oil pipe at a lower opening, and two impellers. Each of the impellers comprises an impeller shaft, a barrel body and at least three blades fixed outside the barrel body and provided at a top thereof with a notch, where the two impeller shafts are parallel to each other. The two impellers are parallel and are synchronously rotated, and the notches on two sides of the inlet are in one-to-one correspondence relation to form a holding passage that can clamp the flexible pipe.

Auxiliary feeding device for flexible pipe of radial horizontal well

The present disclosure provides a hydrothermal geothermal development method of multilateral well closed circulation, comprises the steps of: dividing a geothermal reservoir into single layers according to geothermal reservoir geological conditions, wherein an upper single layer with a lower water temperature and a higher permeability is taken as a recharge layer, and a lower single layer with a higher water temperature is taken as a production layer; tripping a production casing, and injecting cement for well cementation; performing casing lateral windowing in a vertical hole corresponding to the recharge layer, and drilling several branch radial horizontal holes into the recharge layer; performing casing lateral windowing in the vertical hole corresponding to the production layer, and drilling several branch radial horizontal holes into the production layer; tripping a guiding pipe into the production casing of the vertical hole, with a depth thereof reaching a well section between the recharge layer and the production layer; tripping a packer at a guiding shoe to isolate the guiding pipe and an annulus of the casing from each other, so as to prevent geothermal fluid of the recharge layer and the production layer from being communicated with each other in the vertical hole.

Hydrothermal geothermal development method of multilateral well closed circulation

An impulse-type underground supercharged jet drilling method and device. The impulse-type underground supercharged jet drilling method uses up and down vibrations of a drill string or weight on bit variation during the drilling process, so that an upper joint connected to the drill string drives a housing and a supercharging cylinder block to move up and down relative to a supercharging piston, while the supercharging piston, a high pressure line, and a drive shaft disposed outside the high pressure line make a reciprocally retractable movement relative to the housing. As a result, some working fluid entering the supercharging cylinder block is intermittently supercharged, and discharged from a high pressure fluid passage disposed in the supercharging piston and the high pressure line. The device effectively imparts an underground supercharging to parts of the drilling fluid, thus improving the rock breaking efficiency and the drilling speed.

Impulse-type underground supercharged jet drilling method and device

Growing community of inventors

Beijing, China

Zhongwei Huang