Chinese Academy of Sciences

Google Inc.

Beijing Naura Microelectronics Equipment Co., Ltd.

Yongkang Chunkai Import & Export Co., Ltd

China Petroleum & Chemical Corporation

Research Institute of Petroleum Processing, Sinopec

Bo Zheng

Shouding Li

Guanfang Li

Tianqiao Mao

Xiao Dong Li

Zhaobin Zhang

Jing Wang

Hao Wang

Jianming He

Yanfang Wu

Yanzhi Hu

Chun Long Wang

Xin Wu

Zhenguo Ma

Jing Shi

Pengfei He

Xiaojuan Wang

Zheng Liu

Yu Zheng

Peng Guo

Lei Jin

Xiao Li

Baoning Zong

Peijun Ding

Junyi Mao

Xiaojin Tang

Jiang Qian

Lifeng Hu

Zhenxing Zhu

Guiheng Zhou

Gang Feng

Siyuan Qie

Tao Xu

Wenqiang Zhang

Zhongming Zhou

Zhiyong Pan

Fang Chu

Aru Yan

Dylan Myers

Vincent Zhou

Yongfei Wang

Xiaoping Shi

Yunfeng Lan

Guohua Gao

Jianqi Fei

Hang Bian

Xiukuo Sun

Xiaoyan Ren

Yizhen Zhao

Haifeng Qin

Renjie Chen

Shuai Guo

Jinhao Zhu

Zhehuan Jin

Guangfei Ding

A low-to-medium maturity shale oil extraction system based on curtailed power heating includes a transmission line with an input terminal electrically connected to curtailed power from a wind and PV power generation base and an output terminal electrically connected to an input terminal of a surface control platform, where downhole electric heaters are located inside a heating well; the heating well penetrates through an upper sealing layer and is located in a reservoir; downhole temperature and pressure monitoring controllers are provided in the heating well; the downhole temperature and pressure monitoring controller is electrically connected to the downhole electric heater; and a production well penetrates through the upper sealing layer and is located at a side of the heating well adjacent to the ground in the reservoir. The system avoids resource waste caused by power curtailment, enhances energy utilization efficiency, and improves the mobility and recoverability of shale oil.

Low-to-medium maturity shale oil extraction system based on curtailed power heating

A method for preparing 2-alkylanthracene includes the step of separating 2-alkylanthracene from a reaction product of anthracene alkylation reaction. The anthracene alkylation reaction is a reaction of anthracene and an alkylation reagent under an alkylation condition and in the presence of an alkylation reaction solvent and a catalyst. The reaction product of the anthracene alkylation reaction contains anthracene and the product of a series of alkylanthracenes containing 2-alkylanthracene.

Method for separating 2-alkylanthracenes and use thereof for producing hydrogen peroxide

The present application disclose a device for preparing rock samples with different moisture contents, which comprises a sample container, wherein two ends of the rock sample are respectively connected with a first steam inlet and a first steam outlet of the sample container; the first steam outlet, a pump and a gas-liquid separator are connected in sequence, a gas outlet end of the gas-liquid separator, a steam compressor and the first steam inlet are connected in sequence, and a liquid outlet end of the gas-liquid separator, a steam generator and the steam compressor are connected in sequence. The water vapor in the sample container is pumped into the gas-liquid separator by the pump to separate low-temperature water vapor and condensate, and the low-temperature water vapor and condensate form high-temperature and high-pressure steam again and return to the inside of the sample container. The water in the steam generator always circulates inside the preparation device. The measuring instrument measures the reduction of the water in the steam generator, and subtracts the pre-recorded reduction of the water in the steam generator when the preparation device is idling, so as to obtain the water amount of the rock sample, and then calculate the moisture content of the rock sample.

Device for preparing rock speciments with different moisture contents

A multifunctional and visual rock triaxial testing system is provided. The multifunctional and visual rock triaxial testing system includes an axial loading system, a high-energy accelerator computerized tomography (CT) scanning system, a turntable system, a triaxial pressure cell, a fluid fracturing pump, a temperature pump, a confining pressure loading pump, a power oil source, and an integrated control console, where the turntable system is configured to drive the high-energy accelerator CT scanning system to rotate, so as to scan an internal structure of a rock sample; and the triaxial pressure cell and the fluid fracturing pump are configured to conduct compression and fracturing tests on the rock sample, respectively.

Multifunctional and visual rock triaxial testing system

A rock true-triaxial testing system based on computerized tomography (CT) scanning aims to solve problems in the prior art, that is, the rigidity of the frame in the testing system is insufficient; high-pressure lines, wires, and signal lines are entangled when rotating; and the reaction frame and loading actuators obstruct the ray. The rock true-triaxial testing system includes a true-triaxial loading system and a high-energy accelerator-based CT scanning system, where the high-energy accelerator-based CT scanning system is located inside the true-triaxial loading system, and the high-energy accelerator-based CT scanning system is configured to image an internal structure of a cubic rock sample and continuously apply a stress to the cubic rock sample through a plurality of piston extension rods in the true-triaxial loading system. The rock true-triaxial testing system reduces radiation attenuation, and ensures imaging quality and a stable and smooth loading process.

Rock true-triaxial testing system based on computerized tomography (CT) scanning

An etching method for selectively etching a silicon oxide film on a wafer surface that includes the silicon oxide film and a silicon nitride film includes: a surface layer removal process including: etching the silicon oxide film at a first etching rate and removing a surface modification layer covering on the silicon nitride film; and an etching process including: etching the silicon oxide film at a second etching rate. The first etching rate is smaller than the second etching rate.

Etching method, air-gap dielectric layer, and dynamic random-access memory

A multi-stage perforation and shock wave combined device and method for initial fracture enhancement are provided. The multi-stage perforation and shock wave combined device for initial fracture enhancement includes a perforating gun and a shock wave excitation nipple, where the perforating gun is configured to fire perforating bullets into a formation to form initial fractures; the shock wave excitation nipple is connected to the perforating gun, and includes an energetic rod capable of exploding after excitation and a feeding assembly; the feeding assembly includes a pushing head, a reciprocating spring, and a feeding spring; and the reciprocating spring is configured to push the pushing head, so as to push a spare energetic rod into a target position.

Multi-stage perforation and shock wave combined device and method for initial fracture enhancement

A rock mechanics triaxial testing machine includes an outer pressure chamber and an inner pressure chamber located inside the outer pressure chamber, and a side wall of the inner pressure chamber is provided with a communication hole communicating with the outer pressure chamber; an upper pressure head and a lower pressure head which may be placed inside the inner pressure chamber; an axial pressure driving member, the axial pressure driving member may drive the upper pressure head and lower pressure head to approach each other to squeeze the rock sample; an axial deformation sensor, a radial deformation sensor, a lifting mechanism, the lifting mechanism may drive the inner pressure chamber to rise and fall. In the rock mechanics triaxial testing machine, the inner pressure chamber and the outer pressure chamber are nested indoors and outdoors, and the inner pressure chamber is used to quickly mount rock test samples.

Rock mechanics triaxial testing machine has shaft pressure driving piece and lifting mechanism driving inner pressure chamber to lift

Embodiments of the present disclosure provide a reaction gas supply system and a control method. The reaction gas supply system includes a plurality of precursor containers and a plurality of supply regulator devices. The precursor container is connected to at least one of the reaction chambers. The plurality of precursor containers include at least a pair of precursor containers of an arbitrary combination. A supply regulator device is arranged between each pair of precursor containers. The supply regulator device is configured to connect the corresponding pair of precursor containers. With the reaction gas supply system and the control method of the present disclosure, the reaction gas may be ensured to be supplied stably, the utilization rate of the precursor may be increased, and the production efficiency and the product quality may be increased.

Reaction gas supply system and control method thereof

Water spraying gun

A semiconductor manufacturing process is provided. A trench is formed in a semiconductor structure and an oxide layer is deposited on sidewalls of the trench. A solid-state by-product layer is formed on surfaces of the trench by introducing a first etchant gas to react with a naturally occurred oxide layer at the bottom of the trench and the deposited oxide layer. The solid-state by-product layer has a thickness on the bottom less than a thickness on the sidewalls. A second etchant gas is introduced into the trench to react with the solid-state by-product layer, thereby providing a thinned solid-state by-product layer on the sidewalls to protect the deposited oxide layer. By a heating process, the thinned solid-state by-product layer is removed from the sidewalls of the trench, exposing the deposited oxide layer and a surface portion of the semiconductor structure in the trench.

Semiconductor manufacturing process

A visualization system for simulating excavation of a fluid-structure interaction tunnel includes a fluid-structure interaction tunnel model system, a tunnel model solution supply system, a detection system and an excavation system. The tunnel model solution supply system is configured to inject a nuclide solution to simulate a fluid pressure. The detection system is configured to detect a 3D deformation state of a tunnel surrounding rock and a 3D migration process of the nuclide solution. The excavation system is provided between the detection system and the tunnel model system to simulate tunnel excavation. During the tunnel excavation, a lifting device in the excavation system controls a drilling device to ascend to a set height for operation. During 3D detection, the lifting device controls the drilling device to descend to an initial height to avoid affecting the detection of a detection device.

Visualization system for simulating excavation of fluid-structure interaction tunnel

A visual test system for a secondary generation or decomposition of a hydrate includes a hydrate conveying device, a computerized tomography (CT) imaging device, a temperature control device, a pressure control device and a flow control device. The hydrate conveying device includes an annular pipeline structure composed of a plurality of straight pipeline sections and a plurality of curved pipeline sections. The straight pipeline section is able to rotate around an axis thereof under the drive of a pipeline driving device. The CT imaging device is used to perform a three-dimensional (3D) detection inside the pipeline, and includes a turntable, a ray source and a detector. The ray source is able to rotate under the drive of the turntable driving device. The temperature control device, the pressure control device and the flow control device are used to control a gas-liquid mixture's temperature, pressure and flow rate, respectively.

Visual test system and method for secondary generation or decomposition process of hydrate

A triaxial rock mechanics test system for high-strain-rate cyclic dynamic loading is provided, including: a host loading module, a dynamic cyclic loading module, and a dynamic measurement module. The host loading module includes a loading frame, a triaxial pressure mechanism and an actuator that are provided inside the loading frame. The dynamic cyclic loading module includes a driving mechanism, a fixed mechanism and a mobile mechanism. The dynamic measurement module is configured to acquire axial pressure data, radial deformation data and axial deformation data of the rock sample during a test. In the triaxial rock mechanics test system for high-strain-rate cyclic dynamic loading of the present invention, an energetic rod is driven by an electrical explosion of a metal wire to generate a strong shock wave with controllable peak pressure, duration and waveform.

Triaxial rock mechanics test system for high-strain-rate cyclic dynamic loading

Growing community of inventors

Beijing, China

Bo Zheng