Huawei Technologies Co., Limited

China National Petroleum Corporation

Cnpc USA Corporation

Beijing Huamei Inc.

Cnpc Engineering Technology R&d Company Limited

China Institute of Atomic Energy

Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology

Jianhua Guo

Jiaqing Yu

Chris X Cheng

Yu Wang

Lili Chen

Ming Xu

Wei Liu

Chen Wang

Ping Li

Guodong Zhan

Qiang Li

Xu Wang

Na Zhang

Chi Zhang

Bo Zhou

Wei Li

Yong Ma

Wei Gao

Xiongwen Yang

Chuang Zhang

Tao Jia

Hua Zhang

Yonghong Wang

Ding Ding

Rui Zheng

Wei Yao

Jingyu Lai

Yongjin Yu

Jianzhou Jin

Chi Ma

Youzhi Zheng

Hong Yue

Mingjie Lv

Fengzhong Qi

Shuoqiong Liu

Zishuai Liu

Yuchao Guo

Hongwei Yin

Zhaohui Wang

Congfeng Qu

Huijuan Guo

Ling Guo

Fei Han

Jianli Wang

Binggui Xu

Yongliang Yu

Zhitong Liu

Hongfei Ji

Wanjun Li

Quanli Zhang

Ruixue Li

Shunping Zhang

Fuxiang Hou

Yingjie Zhu

He Yang

Xiaobing Zhang

Chengyang Chen

Zhizhen Xu

Xiaohui Ji

Baoqian Dai

Mushui Shu

Shuo Xiang

Pengyao Zhou

Feng Zhou

Haijiao Li

Youcheng Zheng

Chengquan Li

Yan Dou

Shijun Qiao

Songtao Xiao

Huibo Li

Shangwen Chang

Li Chang

Lisheng Liu

Changshui Wang

Yinggen Ouyang

Guoan Ye

Zhijian Hu

Depei Shi

Sihua Tu

Weisheng Li

Hu Peng

Xihui Hu

The present disclosure relates to the technical field of oil and gas field exploitation, in particular to an early strength material suitable for a cement slurry system, a cement slurry composition, a cement slurry system, a preparation method therefor and the use thereof. The early strength material contains an aluminum salt, a sodium salt, crystal whiskers, an inorganic mineral and dispersing agent I, wherein the weight ratio of the aluminum salt, the sodium salt, the crystal whiskers, the inorganic mineral and dispersing agent I is (1-3):(1-3):(1-4):(1-8):1. The early strength material provided by the present invention has both high-temperature retarding performance and low-temperature early strength performance; meanwhile, while satisfying well cementing, the cement slurry system prepared from the cement slurry composition containing the early strength material can prolong thickening time of cement slurry under a high-temperature condition, can prevent ultra-retarding of top cement slurry under a low-temperature condition and has increased early strength.

Cement slurry system, preparation method therefor and use thereof

Laptop stand

The disclosure relates to the technical field of experimental detection. A portable experimental device for hazardous chemical and an experimental method thereof are provided. The technical scheme of the disclosure integrates hazardous chemicals information and data of a portable meeting-water air release test device data to construct a perfect hazardous chemicals database, and realizes rapid prediction and response to a fire scene through scene data collection, preprocessing and matching. The scene data of the portable device is received and processed, and is compared with the database information, the random forest model is used to train the chemical reaction prediction model, and the real-time detection data is predicted to obtain the second prediction result. and the test experimental results are shared to each mobile terminal in time to realize the rapid transmission and sharing of information.

Portable experimental device for hazardous chemical and experimental method thereof

A drill bit for cutting formation comprises a bit body, a plurality of cutters, a plurality of blades with pockets to accommodate the cutters respectively. Each of the plurality of cutters has an ultra-hard layer, two side facets extending obliquely inward from the substrate to a top surface of the ultra-hard layer, a convex portion between the two side facets. The convex portion comprises a transition surface and the transitional surface is convex as it extends between adjacent the two side facets. The curvature of the transitional surface varies along the cutter axis with the curvature at the cutting edge larger than the curvature of the cutter circumferential surface.

Cutting elements with increased curvature cutting edges

A cutting element comprises a cylindrical substrate, a table bonded to the substrate, a working surface on the top of the table, and a plurality of dimples on the working surface. The table is made of super-abrasive material. The super-abrasive material can be PCD. Surface patterns of the table can reduce contact friction between the rock and the cutting element. Therefore, heat on the table can be reduced and thermal damage to the table is decreased. This results in improved cutting element service life.

Cutting element with reduced friction

Embodiments of the present invention relate to a method for controlling temperature of a terminal, including: receiving, by the terminal, an instruction for triggering execution of a first task; obtaining, by the terminal, a current temperature of the terminal; and controlling, by the terminal, an execution manner of the first task based on the current temperature, to control temperature of the terminal. When the terminal obtains the current temperature of the terminal, the terminal may control, based on the current temperature of the terminal, the first task to be executed in different manners, so as to control temperature of the terminal and ensure that the mobile phone is in a safe state.

Method for controlling temperature of terminal, and terminal

Disclosed are an expansion tool assembly, comprising: an expandable tubular; a guide shoe partially inserted into and connected to the lower end of the expandable tubular; a sealing sleeve arranged in the expandable tubular and connected to the upper end of the guide shoe; an expansion assembly comprising an expansion cone and expansion seat disposed inside the expandable tubular, wherein the lower end of the expansion seat is connected with hooks, which can be rested on the upper end of the sealing sleeve; an upper joint that is connected to the upper end of the expansion seat and can be connected to a drill string. A force transfer path can be established via connection between the expansion seat and sealing sleeve, so that expandable tubular weight is borne on the drill string. Unintentional expansion of the expandable tubular, caused by interaction between expandable tubular and expansion cone, can be avoided.

Expansion tool assembly for expandable tubular

The present invention relates to a spent fuel dry reprocessing method for directly obtaining a zirconium alloy nuclear fuel, comprising: determining components and a ratio of a molten salt composition used for melting a spent fuel according to a requirement of reactor design on a zirconium alloy fuel and contents of actinium series metals in the spent fuel; melting the spent fuel in the above molten salt composition; and selecting an electrode pair for electrodeposition so that zirconium in the molten salt composition and uranium ions in the spent fuel or uranium and other actinium series metal ions are subjected to co-deposition, thereby obtaining the zirconium alloy nuclear fuel meeting a design requirement. The spent fuel dry reprocessing method provided by the invention is suitable for oxide spent fuel and metal spent fuel, and is simple and controllable in process, low in energy consumption, low in cost and easy to industrialize.

Spent fuel dry-process reprocessing method for directly obtaining zirconium alloy nuclear fuel

A message push method and apparatus comprise: receiving a push request sent by a service provider server, where the push request carries pushed message content, a service provider server identifier, and a user identity user identity stored by the service provider server; querying a preconfigured information triplet according to the service provider server identifier and the user identity, and acquiring a client identifier of a client that will receive the pushed message content, where a correspondence among the service provider server identifier, the user identity, and the client identifier is recorded in the information triplet; and pushing the pushed message content to the client according to the client identifier. A message push can be implemented in a case in which a service provider server does not need to acquire a client identifier of a target terminal, thereby preventing private data from being exposed.

Message push method and apparatus

The present invention relates to a traffic distribution method, apparatus, and system. The method includes: receiving a current packet sent by a first entity; acquiring layer 7 application information according to the current packet; if the layer 7 application information is acquired, matching the current packet with a layer 7 traffic distribution policy according to the layer 7 application information; and sending the current packet to a service server after the current packet matches the layer 7 traffic distribution policy. In this way, the present invention implements traffic distribution based on the layer 7 application information, enhances performance of a traffic distribution device, and reduces deployment costs of an operator.

Traffic distribution method, device, and system

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Beijing, China

Jianhua Guo