China Petroleum & Chemical Corporation

State Grid Corporation of China

Fushun Research Institute of Petroleum and Petrochemicals, Sinopec Corp.

Dalian Research Institute of Petroleum and Petrochemicals, Sinopec Corp.

State Grid Digital Technology Holding Co., Ltd.

State Grid Blockchain Technology (beijing) Co., Ltd.

Jiangxi Power Exchange Center Co., Ltd.

Beijing Power Exchange Center Co., Ltd.

Liaoning Power Exchange Center Co., Ltd.

East Inner Mongolia Power Exchange Center Company Ltd.

Chao Yang

Quanjie Liu

Zequn Yin

Dong Wang

Nan Zhang

Liang Zhao

Zhe Zhang

Kai Xie

Xian Wei Zhang

Da Li

Tong Xing

Jiaxing Xuan

Lihua Zhao

Guomin Li

Fan Jia

Zhizhi Zhang

Desheng Bai

Hejian Wang

Zhan Su

Yonghui Liu

Kun Fan

Qingchun Li

Shengnan Zhang

Shijie Ji

Xiaolei Sun

Chen Wang

Jiao Lu

Wen Xie

Gang Chen

Jingli Feng

Shengzhi Lu

Hexiao Liang

Tian Sun

Xin Li

Haiqing Jia

The present disclosure provides a blockchain-based green power certification method, apparatus, and system, to pre-process obtained basic data to obtain proof-of-existence data, certify the proof-of-existence data from a production side and a consumption side by using a certification chain and a token chain respectively, and obtain a green power attribute certificate and a green power consumption label if the certification is passed; generate a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT), which realizes non-interchangeability, indivisibility, and other characteristics of the certificate and the identifier; and supervise and verify a certification process by using a chain of custody, and generate a corresponding unique blockchain identifier for the certification chain, the token chain, and the chain of custody separately through multi-chain interaction, so as to realize data interaction between blockchains.

Blockchain-based green power certification method, apparatus, and system

A preparation method of the starch-containing microsphere includes the steps of first reacting starch with a low concentration of epichlorohydrin, and then reacting the resultant product with a surfactant, followed by final crosslinking to give microspheres. The starch-containing microspheres thus prepared are polydisperse starch-containing microspheres with a uniform particle size distribution, with the particle size being in a range of 0.1-500 μm.

Starch-containing microsphere and preparation method and use thereof

Disclosed are an associated copolymer, a method for preparation of a polymer and a polymer prepared with the method, a use of the associated copolymer and/or the polymer in drilling fluids, and a drilling fluid containing the associated copolymer and/or the polymer. The associated copolymer comprises acrylamide structural units, zwitter-ionic structural units, and cationic polyamine structural units at a specific proportion, and the cationic polyamine structural units have specific kinematic viscosity and cationic degree; thus, when the associated copolymer is used as a viscosity improver for drilling fluids, the obtained drilling fluid not only has favorable apparent viscosity after it is aged at a high temperature, but also has high dynamic shear force, and is resistant to high temperature up to 200&#xb0; C. or above, resistant to NaCl up to saturated concentration, and resistant to CaClup to 20 wt % concentration.

Associated copolymer and preparation method thereof, and drilling fluid

Growing community of inventors

Liaoning, China

Chao Yang