公开(公告)号：US10822927B2

公开(公告)日：2020-11-03

申请号：US16601562

申请日：2019-10-14

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Yang Tang ,  Guorong Wang ,  Shouwei Zhou ,  Qingyou Liu ,  Lin Zhong ,  Wang Li ,  Qingping Li ,  Qiang Fu ,  Yufa He ,  Chuan Wang ,  Leizhen Wang

IPC: E21B7/04 ,  E21B7/128 ,  E21B17/18 ,  E21B43/01 ,  E21B43/36 ,  E21B41/00

Abstract: Disclosed is a device for solid-state fluidized mining of natural gas hydrates in a shallow seabed, including: a sea surface support system, a pipeline delivery system, and an undersea drilling system. The sea surface support system includes a hydrate drilling vessel floating on seawater. The pipeline delivery system includes a continuous double-layer oil pipe, a recyclable conduit installed in a sediment cover, an open-hole steering packer installed outside the recyclable conduit. The undersea drilling system includes a hydrate slurry separator, a single screw pump, a hydraulic motor, a jet head and a differential pressure sliding sleeve close to the hydrate drill bit. The present invention has the following beneficial effects. The device achieves a multi-directionally horizontal drilling and production in the hydrate reservoir with a single well head, improving the drilling efficiency and single well production.

公开(公告)号：US20230100604A1

公开(公告)日：2023-03-30

申请号：US17935692

申请日：2022-09-27

Applicant: Southwest Petroleum University

Inventor： Lin Zhong ,  Guorong Wang ,  Qingyou Liu ,  Gang Wei ,  Xia He ,  Linyan Chen ,  Gang Hu ,  Chuan Wang ,  Zheng Zhang ,  Zhichao Li ,  Zixuan Wang ,  Xiaolong Wu

IPC: C10M107/00 ,  E21B17/10 ,  B23K26/352

Abstract: A textured surface of oil and gas equipment includes a first substrate, an antiwear coating, and a second substrate, and further includes a texture, where the texture includes a first texture and/or a second texture; the first substrate and the second substrate are capable of moving relative to each other when operating, the first texture is arranged on a surface of the first substrate that is in contact with the antiwear coating, the second texture is arranged on a surface of the antiwear coating that is in contact with the second substrate. A method for machining the textured surface of oil and gas equipment is provided, which improves various performances of the oil and gas equipment such as antifriction, wear resistance, and corrosion resistance by combining a coating with a texture, so as to prolong the service life of the oil and gas equipment, increase oil and gas production efficiency.