Southwest Petroleum University

Source Photonics (chengdu) Company Limited

Huawei Technologies Co., Limited

China Petroleum & Chemical Corporation

Sinopec Southwest Oil & Gas Company

Maishi Electronic (shanghai) Ltd.

China Railway No. 2 Engineering Group Co. Ltd.

Xinyun Engineering Company of China Railway No. 2 Engineering Group, Co., Ltd.

Sichuan Yuandashuyang Phamaceutical Co., Ltd

Jun Chen

Jinzhou Zhao

Yuanzhong Xu

Yongquan Hu

Chaoneng Zhao

Kui Wu

Xiaohui Tang

Jin Zhao

Zhimin Hou

Zhenwei Gan

Wei Zhao

Lan Ren

Shunqu Hu

Bin Qi

Zhi Xie

Guorong Wang

Wei Lei

Yang Tang

Jialin Tian

Jianping Zhao

Tao Liu

Weimin Chen

James Wang

Jinzhong Wang

Chen Chen

Chao Li

Xinsheng Peng

Yanniu Ren

Ping Chen

Yijun Zhou

Mei Yu

Chengcheng Luo

Yonghui Liu

Jinglei Mao

Wenfeng Pang

Mingbo Wang

Li Gu

Chenglin Wang

Ning Wu

Shiwen Yang

Ran Lin

Wei Zhang

Chenghao Fu

Jianxin Luo

Chuanwei Pan

Wang Yu

Feng Hui

Yanshan Gou

Pengju Song

Guohui Lin

Zhi Zhu

Dejie Chen

Shuguang Ran

Mengqiang Chen

Dexi Jiang

Shilong Li

Jianjun Chen

Jian Pan

Yuefeng Sun

Wudi Zhang

Yusen Ye

Da Li

Junkai Zhu

Haoxian Tang

Fengjing Sun

Jiannan Chen

Changqing Ye

Shouhong Ji

A backflow gas heating and throttling device, and a surface throttling system, where the surface throttling system includes a Christmas tree, a backflow gas heating and throttling device, and a gas collection pipeline connected in sequence. A pipeline between the Christmas tree and the backflow gas heating and throttling device and the gas collection pipeline are both provided with a valve, a thermometer, and a pressure gauge, and the gas collection pipeline is further provided with a flow meter. The backflow gas heating and throttling device includes a gas inlet pipe, a heat pipe, a guide cone, an outer throttle pipe, an annular cover, a tapered pipe, a gas outlet pipe, a throttle plate I, a throttle plate II, and a heating rib, thereby increasing the natural gas temperature before throttling and further heating the natural gas during throttling to prevent hydrate generation from causing blockage.

Backflow gas heating and throttling device, and surface throttling system

An intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines, including a frame, a speed control mechanism, a braking mechanism, an anchoring mechanism, and a sealing mechanism; the speed control mechanism is composed of a motor, rotor, etc; the braking mechanism is composed of a braking rubber cylinder and a first extrusion ring; the anchoring mechanism is composed of a rubber conical cylinder, slips, etc; and the sealing mechanism is composed of a sealing rubber cylinder and a second extrusion ring. The second extrusion ring is driven by a hydraulic rod to press the sealing rubber cylinder, causing it to expand and block the pipe wall to achieve sealing. The intelligent maintenance and repair robot inside the pipeline has the characteristics of good speed control response, wide speed range, strong ability to pass bends, stable braking process, and high sealing reliability.

Intelligent maintenance and repair robot for small diameter and small flow oil and gas pipelines and method thereof

An experimental method for determining flow patterns in vertical wellbore of gas wells at high-pressure conditions, which falls within the technical field of deliquification for gas reservoirs. The method comprises: collecting target block parameters; Developing physical simulation experiment to measure the liquid holdup of vertical wellbore; Constructing similarity dimension number to characterize gas density and change with liquid holdup to represent flow similarity of different gas velocities at different pressures; Utilizing equal liquid holdup to represent flow similarity, fitting similarity dimension coefficient, normalizing flow under different pressure conditions to same similarity dimension number, realizing coincidence of change cure of liquid holdup of normal pressure and medium pressure with similarity dimension number.

Experimental method for determining flow patterns in vertical wellbore of gas wells at high-pressure conditions

A construction method for the upright lifting of a large-tonnage box girder to a bridge, and an erection method for the large-tonnage box girder. The construction method comprises: constructing a lifting station () at reserved bridge piers (); disposing a girder lifting base (), lifter traveling rails (), and a mounting lifter () in the lifting station (); directly erecting a box girder () by the lifter () in a way that the lifter () travels to a position above the base () and erects the box girder (). The erection method further comprises: lifting by the lifter () a single set of transport and erection apparatuses or two sets of transport and erection apparatuses to a bridge, a girder transport vehicle () cooperating with a bridge erecting machine () to repeatedly complete the erection of the box girder (); hoisting by the lifter () the transport and erection apparatus off the bridge; lifting by the lifter () the box girder () within the scope of the reserved bridge pier () to the erected box girder (); and constructing the reserved bridge piers (); completing by the lifter () the erection of the box girder () within the scope of the reserved bridge piers (). The construction and erection methods for the box girder occupy a small space and have high efficiency.

Construction method for upright lifting of large-tonnage box girder to bridge, and erection method for large-tonnage box girder

A sliding sleeve opening tool includes an engaging element, a ball seat and a guiding head connected in sequence, as disclosed herein. The engaging element includes at least two elastic pawls uniformly disposed in a circumferential direction and at least one engaging part disposed on an external circumferential surface of an elastic pawl, and the engaging element is further provided with a first fluid channel which runs through the engaging element. The ball seat is provided with a second fluid channel which runs through the ball seat, and within the second fluid channel a taper hole section for bearing a sealing ball is disposed, the second fluid channel being in communication with the first fluid channel. The guiding head is provided with a third fluid channel which runs through the guiding head, and the third fluid channel is in communication with the second fluid channel. The sliding sleeve opening tool has at least one of the pushing function, the fishing function, the pushing assistance function, the mud scraping function and the sealing function.

Tool for opening sliding sleeve

A device for perforating, packing, and fracturing and a tubing string comprising the device are disclosed, wherein the device comprises an upper connector, a nozzle sleeve, a mandrel, a packer, a lower connector, a first inner sleeve provided inside the upper connector, and a second inner sleeve provided inside the nozzle sleeve, further wherein the upper connector is provided with a fracturing hole, and a nozzle is provided at the nozzle sleeve.

Device for jet packing and fracturing and tubular column comprising same

The invention discloses a method for simulating the discontinuity of the hydraulic fracture wall in fractured reservoirs, comprising the following steps: establish a physical model of the natural fracture; establish a hydraulic fracture propagation calculation equation; establish a natural fracture failure model, calculate the natural fracture aperture, and then calculate the natural fracture permeability, and finally convert the natural fracture permeability into the permeability of the porous medium; couple the hydraulic fracture propagation calculation equation with the permeability of the porous medium through the fracture propagation criterion and the fluid loss to obtain a pore elastic model of the coupled natural fracture considering the influence of the natural fracture; work out the stress and displacement distribution of the hydraulic fracture wall with the pore elastic model of the coupled natural fracture, and analyze the offset and discontinuity of the hydraulic fracture wall according to the displacement.

Method for simulating the discontinuity of the hydraulic fracture wall in fractured reservoirs

The invention discloses a testing device and method for simulating the flowback in the shut-in period of fractured wells, comprising a fracturing fluid tank, a flowback fracturing fluid tank, a hydraulic fracturing pump, a flowback fluid collection beaker, and a shut-in flowback testing system; the shut-in flowback testing system is composed of a box body and an acoustic wave testing device, a temperature control device, a fracturing string and a square rock block arranged in the box body; a stress loading plate and a hydraulic block are successively arranged between the four surfaces of the square rock block and the inner walls of the box body; the acoustic wave testing device consists of an acoustic wave transmitting probe and an acoustic wave receiving probe; the four outer surfaces of the box body are provided with hydraulic tanks.

Testing device and method for simulating the flowback in the shut-in period of fractured wells

The invention discloses a method for predicting the optimal shut-in duration by coupling fluid flow and geological stress, comprising the following steps: determine basic parameters; obtain the fracture length, fracture width and reservoir stress distribution based on the basic parameters; calculate the oil saturation, pore pressure, and permeability and porosity after coupling change in different shut-in durations on the basis of the principle of fluid-solid coupling; take the oil saturation, pore pressure, and permeability and porosity obtained in Step 3 as initial parameters and calculate the production corresponding to different shut-in time on the basis of the productivity model; finally select the optimal shut-in time based on the principle of fastest cost recovery. The present invention can accurately predict the optimal shut-in duration after fracturing to improve the oil and gas recovery ratio in tight oil and gas reservoirs with difficulty in development and low recovery.

Method for predicting the optimal shut-in duration by coupling fluid flow and geological stress

The present disclosure discloses an experimental apparatus and method for simulating transport of a sand-carrying fluid in a fracturing fracture. The apparatus may include a spiral proppant transport device, a stirred tank, a screw pump, a liquid transport pump, a pressure gauge, a proppant transport and distribution system, a cyclone desander, a waste liquid recycle container, a proppant recycle container, and a fracturing fluid tank. The spiral proppant transport device may be communicated with the stirred tank. The waste liquid recycle container and the fracturing fluid tank may be communicated with the stirred tank via the liquid transport pump. A bottom end of the stirred tank may be communicated with the proppant transport and distribution system through the screw pump. It is possible to simulate the sand-carrying fluid paved under a closure pressure by setting a computer to precisely control a transparent cuboid fracture member including hydraulic tanks.

Experimental apparatus and method for simulating transport of sand-carrying fluid in fracturing fractures

The present invention discloses a dual-polarized antenna that includes a ground plate, a feeding part, and a radiant plate. The feeding part includes a first feeding part and a second feeding part. The first feeding part includes a first dielectric plate, a first feeding layer, and a first transmission line. The second feeding part includes a second dielectric plate, a second feeding layer, and a second transmission line. The first dielectric plate and the second dielectric plate are placed perpendicularly to each other and are perpendicularly installed on the ground plate, and the first transmission line and the second transmission line are separated from each other.

Dual-polarized antenna and antenna array

The present invention relates to a multi-functional drilling experiment platform, which consists of a gantry, a hydraulic cylinder, a power swivel and a platform base. The gantry mainly realizes the control of the drill string during the drilling-in process. In order to simulate the vertical well, the inclined well, and the horizontal well, the drilling machine needs to rotate between 0&#xb0; and 90&#xb0;. The rotation of the gantry is realized by the extension and contraction of the hydraulic cylinder. The platform base is used to set up the gantry and the hydraulic cylinder, bearing the pulling, pressing and twisting loads of drilling experiments. Also, the platform base can move along the track to achieve different types of experiments. The multi-functional drilling experiment platform of the present invention realizes the load simulation experiment of the drilling machine at different angles using the gantry and the hydraulic cylinder.

Multi-functional drilling experiment platform

The present invention discloses a method for terminal inactivation of pathogenic microorganisms, comprising the following steps of: a. vacuum freeze-drying a bio-product packaged in a container, feeding in a gas and sealing to obtain the end product and, b. performing inactivation by dry-heating. The method provided by the present invention can effectively inactivate non-lipid enveloped viruses, with excellent inactivation effects and short inactivation time particularly to parvoviruses, and thus overcome the deficiencies of the conventional terminal dry-heating inactivation methods.

Method for terminal inactivation of pathogenic microorganisms

The present invention discloses a multi-beam antenna system, comprising: a one-dimensional multi-beam forming module connected to a radio frequency port, configured to convert a radio frequency signal transmitted by the radio frequency port into M radio frequency signals having different phases; a two-dimensional multi-beam forming module, which includes M first power division units, and a phase shifter is disposed on P output tributaries of each first power division unit; and M&#xd7;N radiating elements, where the M&#xd7;N radiating elements form a matrix having N rows and M columns, M columns of radiating elements are respectively connected to the M first power division units, N radiating elements in each column of radiating elements are respectively connected to N output tributaries of one first power division unit, and M&#xd7;P radiating elements connected to output tributaries disposed with a phase shifter form a matrix having P rows and M columns.

Multi-beam antenna system and phase adjustment method for multi-beam antenna system, and dual-polarized antenna system

An integrated lens with integrated functional optical surfaces for use in optical communication is disclosed. The integrated lens includes first and second cavities and a fiber adapter. The device also includes integrated first and second lenses. The first cavity houses one or more optical transmitting and/or receiving devices. The second cavity has a first optical surface and an optional second optical surface. The fiber adapter has the second lens. The integrated lens enables a small size, a light weight, high coupling and a high transmission efficiency, and can be produced by injection molding using a single mold. The integrated lens is applicable to optical signal coupling, fiber connections, optical modules, and optical or optoelectronic communication.

Integrated lens with multiple optical structures and vent hole

Growing community of inventors

Chengdu, China

Jun Chen