公开(公告)号：US20240360733A1

公开(公告)日：2024-10-31

申请号：US18508923

申请日：2023-11-14

Applicant: Chengdu University of Technology

Inventor： Jianguo ZHAO ,  Qingyou LIU ,  Haiyan ZHU ,  Min WAN ,  Guorong WANG ,  Xuecheng DONG ,  Xu LUO ,  Yingju PEI ,  Xingming WANG

IPC: E21B23/00 ,  E21B47/06 ,  E21B47/09 ,  E21B47/13

CPC classification number: E21B23/001 ,  E21B47/06 ,  E21B47/09 ,  E21B47/13

Abstract: A downhole traction system includes a driving system and a downhole wheeled tractor. The driving system is connected with the downhole wheeled tractor; the downhole wheeled tractor comprises a tractor body, a power unit and a plurality of traction units; the plurality of traction units are arranged along the extension direction of the tractor body; each of the traction units comprises a driving arm, a supporting arm, a supporting wheel, a driving assembly and a supporting assembly; the driving arm and the supporting arm are movably connected with the tractor body; and the supporting wheel is connected with the driving arm and the supporting arm. When the supporting assembly drives the supporting arm to extend along the radial direction of the tractor body under the hydraulic drive action of the hydraulic power unit, the supporting wheel can be abutted against the well wall.

公开(公告)号：US20240310861A1

公开(公告)日：2024-09-19

申请号：US18418172

申请日：2024-01-19

Applicant: Chengdu University of Technology

Inventor： Jianguo ZHAO ,  Penghui LIANG ,  Qingyou LIU ,  Guorong WANG ,  Haotian ZHENG ,  Hanxiu PENG ,  Min WAN ,  Gang HU ,  Xu LUO ,  Yingju PEI ,  Xingming WANG ,  Xianwei DAI ,  Xuanhe TANG ,  Lei TAO

IPC: G05D7/06 ,  G05B13/04

CPC classification number: G05D7/0623 ,  G05B13/041 ,  G05D7/0635

Abstract: A method, an apparatus and a system for automatically adjusting an opening degree of a fluid control valve, relating to the technical field of oil and gas exploration and development. The method includes: establishing a fluid control valve having an orifice structure in oil and gas production; using a numerical simulation method to obtain the influence law of minimum opening degree adjustment step on oil and gas production; obtaining relevant production test data of the oil and gas well, and calculating the total oil and gas production and the oil and gas production of each production layer based on the production test data of the oil and gas well; dividing the production layer segments into high, middle and low-production layers according to the production ratio of each production layer segment; respectively calculating the average productions of the high, middle and low-production layers.