China National Offshore Oil Corporation

China National Offshore Oil Corporation Research Institute

Huawei Technologies Co., Limited

State Grid Corporation of China

Jing-jin Electric Technologies Co., Ltd.

State Grid Smart Grid Research Institute Co., Ltd.

General Prospecting Institute of China National Administration of Coal Geology

Zhe Jiang

Wenhui Xie

Bin Xie

Wei Zhang

Jing Liu

Jin Zhang

Junrong Wang

Ping Yu

Jianwen Li

Yunpeng Li

Xiao Zhang

Yong Huang

Jinzhong Li

Hang Wang

Licheng Lu

Jianhui Zhou

Shan Liu

Yongwu Wang

Yan Ding

Shaowu Wang

Zehong Liu

Xianshan Guo

Sitong Song

Hengyi Zeng

Shengli Song

Junyi Hou

Degao Zhang

Yonghan Liu

Yinglin Fan

Song Du

Qiaohui Che

Provided is a drilling method for a storage well for liquid-gas two-phase combined geological storage, including the following steps: drilling down from a ground to the bottom of a potable aquifer, and installing a first section wellbore; dividing a second section wellbore into multiple segments of second section sub-wellbores, arranging multiple first bases on an inner wall in advance, forming an vent hole in a sidewall of the second section sub-wellbore corresponding to a gas storage layer, and closing a bottom surface of the second section sub-wellbore at the bottom, with a drill-through hole at the center; drilling down to the bottom of the gas storage layer, and installing the second section wellbore; dividing a third section wellbore into multiple segments of third section sub-wellbores, and arranging multiple second bases on an outer wall in advance.

Drilling method for storage well for liquid-gas two-phase combined geological storage

A high-voltage bushing includes a conductive rod and an air cooling device. The conductive rod has an air channel therein, and the air channel includes an air inlet and an air outlet. The air cooling device includes at least one fan, and the fan is configured to output air flow, so as to blow the air flow into the air channel through the air inlet.

High-voltage bushing and high-voltage power transmission system

The present disclosure discloses a vehicle two-power-source dual driving assembly, wherein, the vehicle two-power-source dual driving assembly comprises two sets of driving units that are symmetrically arranged, the two sets of driving units connect to a same set of vehicle axle half shafts, each of the sets of driving units is provided with a power source and an automatic transmission, and each of the automatic transmissions connects to one of the vehicle axle half shafts. The automatic transmission is provided therein with an input shaft, an intermediate shaft and an output shaft that are parallel, the input shaft, the intermediate shaft and the output shaft are provided thereon with multistage gears with different transmission ratios, the power source connects to the input shaft, and the output shaft connects to a left half shaft or a right half shaft of the vehicle axle half shaft. The present disclosure can realize transmission of two speed ratios, with flexible transmission modes, which shortens the axial size of the driving assembly, which cannot only satisfy the acceleration capability and climbing ability of the vehicle but also satisfy the demand on high vehicle speed.

Vehicle two-power-source dual driving assembly

This application provides a tunnel binding based communication method and a network device. The method includes: transmitting, by a first network device, a service packet to a second network device using a first binding tunnel including a first tunnel and a second tunnel; and when the first tunnel is faulty or transmission quality of the first tunnel does not meet a preset condition, transmitting, by the first network device, a service packet to the second network device using a second binding tunnel including a backup tunnel of the first tunnel and the second tunnel. Therefore, if a tunnel in an original binding tunnel is faulty, a tunnel binding based high-bandwidth service continues to be provided using another binding tunnel constituted by a backup tunnel of the faulty tunnel and a fault-free tunnel. Compared with the prior art, this application can improve high-bandwidth communication reliability and user satisfaction.

Tunnel binding based communication method and network device

The present disclosure relates to a grouting and welding combined connection joint and an offshore installation method thereof, characterized in that: it comprises a set of grouting systems disposed inside of the annular space formed by an inner shell of the central pore canal of a column with large cross section and an outer wall of a column with small cross section, as well as a group of brackets welded on a top deck of a column with small cross section and an inner shell of the central pore canal of the column with large cross section. The grouting and welding combined connection joint provided by the present disclosure has advantages of being able to adapt to the connection of different dimensions of columns, and having simple offshore installation, highly reliable structural safety and low cost.

Grouting and welding combined connection joint applied to a deepwater floating type platform and an offshore installation method thereof

An integrative deep draft floating production platform with unconditional stability and an offshore installation method thereof are disclosed. The platform comprises an ring ballast tank at the bottom, some columns with small cross sections, an ring buoyancy tank at the middle part, some columns with large cross sections, and an upper drilling equipment and oil gas processing module. The ballast tank adopts a permanently fixed ballast, and the tank is internally filled with weights to ensure that the center of buoyancy of the platform is higher than the center of gravity. The drilling equipment and oil gas processing module is installed in the construction site, and the platform is transported to the installation site by a dry tow or wet tow as a whole and then is installed. The platform can be applied to deepwater oil and gas exploitation under harsh marine environment.

Integrative deep draft floating production platform with unconditional stability and offshore installation method thereof

Growing community of inventors

Beijing, China

Zhe Jiang