Boe Technology Group Co., Ltd.

Hefei Xinsheng Optoelectronics Technology Co., Ltd.

Petrochina Company Limited

North China Electric Power University

China Mobile Group Design Institute Co., Ltd.

Guangdong Tongyu Communication Inc.

Yong Ding

Zhe Li

Peng Gao

Chen Wang

Feng Gao

Cheng Liu

Wei Gao

Wentao Zhu

Zhengyuan Zhang

Xianwen Li

Lei Shen

Qingqiao Jia

Jiwei He

Faxin Qu

Yajuan Wang

Xiaorui Liu

Yun Ling

Xu Ma

Zhanguo Ma

Xuepeng Liu

Molang Cai

Yangming Hu

Qianyun Zhao

Qiaorong Han

Changjing Zhou

Xinxing Ma

Jiping Mao

Liang Ye

Hua Shi

Xingzheng Li

Yanming Zhang

Huaqiang Shi

Mingfang He

Baochun Chen

Hongying Li

Ruifen Hao

Yonghong Gu

Guohui Su

Man Bi

Yuanbo Cheng

Yuanxiang Xiao

Shaowei Zhou

Xiaoyong Wen

Shusheng Li

Xuan'ang Lai

Songyuan Dai

The present invention discloses a method for lowering an oil pipe in a gas well without well-killing, a soluble bridge plug and a material preparation method thereof, wherein, the method comprises the steps of: lowering a bridge plug in a wellbore such that the bridge plug blocks the wellbore at a predetermined location in the wellbore; injecting water in the wellbore after the pressure in the wellbore has been relieved so as to replace gases in the wellbore; and lowering an oil pipe in the wellbore to the location of the bridge plug. The method for lowering an oil pipe in a gas well without well-killing, the soluble bridge plug and the material preparation method thereof provided in the present invention successfully solve the problem of high cost for lowering an oil pipe under pressure after a fracturing fluid has been injected into the casing.

Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof

The present disclosure provides a method for preparing a perovskite quantum dot film by one-step crystallization, and belongs to the field of perovskite quantum dot material technology. The present disclosure uses adamantanemethylamine and hydrohalic acid as ligands, first mixes a cesium halide, a lead halide, and the ligands with a solvent to obtain a precursor solution, then deposits the precursor solution on a substrate, and then heats the substrate to obtain the CsPbXperovskite quantum dot film. The present disclosure uses adamantanemethylamine and hydrohalic acid as the ligands, which can quickly coat the perovskite, complex with the CsPbXperovskite, and directly form the perovskite quantum dot via a strong steric effect. Further, the present disclosure is simple and inexpensive, can directly obtain a high-quality perovskite quantum dot film with a thickness of more than 500 nm by one-step crystallization.

Method for preparing CsPbX3 perovskite quantum dot film by one-step crystallization

A jig for inspecting a display module, the display module including a display module body and a lug, the jig including a bottom plate and a cover plate, the cover plate operatively covering the bottom plate; the bottom plate being provided with a first flat portion and the cover plate being provided with a second flat portion, wherein the bottom plate is provided with a first concave portion surrounded by the first flat portion, and/or the cover plate provided with a second concave portion surrounded by the second flat portion, the first concave portion and/or the second concave portion form(s) a receiving area for the display module body, and the first flat portion and the second flat portion are configured to clamp the lug.

Jig for inspecting display module

Disclosed are a monitoring method and system and an integrated monitoring device for an antenna oscillator of a base station, which are used to monitor whether an anomaly occurs in the antenna oscillator of the base station. The monitoring method for an antenna oscillator of a base station in the present invention comprises: performing wave detection and analog-to-digital conversion on an obtained transmission signal of the antenna oscillator of the base station, to acquire a digital signal of a direct-current signal of the transmission signal; determining the amplitude of changes of the digital signal in a set time length, and when the amplitude of the changes is greater than a preset amplitude change threshold, determining that an anomaly occurs in the antenna oscillator; otherwise, determining that the antenna element is normal.

Monitoring method and system and integrated monitoring device for antenna oscillator of base station

Growing community of inventors

Beijing, China

Yong Ding