Sichuan Honghua Petroleum Equipment Co., Ltd.

University of Electronic Science and Technology of China

Meishan Crrc Brake Science & Technology Co., Ltd.

Yu Tian

Aimin Tang

Yan Chen

Chao Lv

Yi Liu

Yang Li

Yunping Chen

Ling Tong

Weihong Han

Bo Liu

Yan Lyu

Hong An

Chen Xiao

Xiaohu Li

Jianhong Shen

Weiyuan Xiao

Wenjun Liu

Kaien Wang

Yu Zhu

Yanfei Shen

Lei Xie

Hongke Xia

Bo Gao

Yuxia Li

Lin Zeng

Zhangjie Ming

Youyuan Cheng

Bo He

Dalang Ge

Hongshan Li

Shuihua Li

Hang Gao

Bali Xiao

Baohua Liu

Daiwei Shan

Jianping Yang

Bin Liu

Bo Ning

Keming Li

Hai Xu

Chong Chen

Zhigang Li

Dongfang Ou

Moukui Li

A fully electric-drive sand-mixing apparatus comprises a foundation; and a suction pump, a suction pump driving electric motor, a suction manifold, a mixing stirrer, a mixing stirrer driving electric motor, a dry-ingredient-adding device, a dry-ingredient-adding device driving electric motor, a liquid-adding device, a liquid-adding device driving electric motor, a sand-conveying device, a sand-conveying device driving electric motor, a discharge pump, a discharge pump driving electric motor, a discharge manifold, a frequency converter placement room and an operation room, which are fixedly connected to the foundation. The suction pump driving electric motor, the mixing stirrer driving electric motor, the dry-ingredient-adding device driving electric motor, the liquid-adding device driving electric motor, the sand-conveying device driving electric motor and the discharge pump driving electric motor are fixedly and electrically connected to the suction pump, the mixing stirrer, the dry-ingredient-adding device, the liquid-adding device, the sand-conveying device and the discharge pump, respectively.

Fully electric-drive sand-mixing apparatus, and automatic control system for fully electric-drive sand-mixing apparatus

A coiled tubing operating system and a coiled tubing operating method are provided, which relate to a technical field of coiled tubing. The coiled tubing operating system includes: an injector assembly for lifting or lowering a coiled tube; a suspending device for suspending the injector assembly; a reel assembly for feeding the coiled tube to the injector assembly, and for rewinding the coiled tube from the injector assembly; and a circuit control system connected to the injector assembly and the reel assembly, for controlling movements of the injector assembly and the reel assembly. The system can ensure the stability of the coiled tubing, the precision of equipment control, and reduction of the environment pollution.

Coiled tubing operating system and coiled tubing operating method

The present disclosure discloses a drilling machine. The drilling machine may include a base, a mast arranged on the base, an iron roughneck, a drill floor mechanical arm, a top drive arranged on the mast, a pipe racker on a finger board, a power finger board, a power catwalk arranged on the ground, and an elevator arranged on the top drive. The drill machine and a corresponding tripping out and tripping in method may be used to vertically transport a stand between a well center and a region of at least one pipe setback efficiently, which may improve the efficiency of tripping out and tripping in, and reduce the risk of accidents in the well. In addition, the present disclosure provides a corresponding method for offline connecting and disconnecting stands during a drilling operation, which may reduce a preparation time during the drilling, improve the drilling efficiency, and reduce the cost of oilfield development.

Drilling machines and methods thereof

Provided are a connection structure and system of an integrated brake device for a rail vehicle. The connection structure of an integrated brake device for a rail vehicle includes a brake valve, a dust collector, an intermediate body, an air cylinder, a support assembly and a connection assembly. The intermediate body is of a plate-type structure, the brake valve and the dust collector are mounted on one side of the intermediate body, the air cylinder is connected to the intermediate body by means of the connection assembly, the air cylinder is mounted on the other side of the intermediate body, and the support assembly is located between the air cylinder and the intermediate body. The connection structure of an integrated brake device for a rail vehicle has a simple and compact structure and saves on space. Brake components are integrated on the intermediate body, and the connections between the brake components and between the whole integrated brake device and an external mounting base are all secure and reliable.

Connection structure and system of integrated brake device for rail vehicle

A method for identifying and extracting a linear object from an image is disclosed. The method comprises: acquiring an original image to be processed, wherein the original image is taken by a camera, received through network transmission or copied from a compact disc or a removable disk; preprocessing the original image to obtain an enhanced image; extracting an edge information image from the enhanced image; then extracting linear features by performing, on the edge information image, a linear feature extracting transform improved with a cluster operator; finally; identifying and extracting the linear object by distinguishing the linear object from other linear features by considering characteristics of the linear object to be identified and extracted. According to the invention, a linear feature extracting transform improved with a cluster operator is constructed from a distribution of edge pixels in the edge information image along a 2-dimensional direction, which makes it possible to extract, rapidly and accurately, weak linear objects such as power lines from images having complicated background and sub-pixels.

Method for identifying and extracting a linear object from an image

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Sichuan, China

Yu Tian