公开(公告)号：US20250136860A1

公开(公告)日：2025-05-01

申请号：US19009926

申请日：2025-01-04

Applicant: Southwest Petroleum University

Inventor： Dezhi Zeng ,  Chengxiu Yu ,  Hanwen Zhang ,  Xi Wang ,  Jiancheng Luo ,  Chunyan Zheng ,  Ruikang Ke ,  Huan Xiao ,  Gang Tian

IPC: C09K8/80

Abstract: The disclosure belongs to the technical field of well completion engineering in oil and gas engineering, and particularly relates to a high-flow-conductivity proppant and its preparation method. The high-flow-conductivity proppant includes dumbbell-shaped framework granules and an oil-soluble film coating layer coated on the surfaces of the framework granules; the oil-soluble film coating layer melts when meeting oil at the temperature of 30-120° C. The high-flow-conductivity proppant prepared by the method has low bulk density, and the problems that the traditional proppant cannot be transported to the far end of a crack, has poor flow conductivity and the like can be effectively solved.

公开(公告)号：US12196042B1

公开(公告)日：2025-01-14

申请号：US18402298

申请日：2024-01-02

Applicant: Southwest Petroleum University

Inventor： Tiejun Lin ,  Chengsong Yang ,  Hao Yu ,  Jianhua Guo ,  Jiachang Nie ,  Chengxiu Yu ,  Yuheng Tuo ,  Hao Han ,  Xin Zeng ,  Zelin Zhu ,  Ruiqi Shen ,  Wenle Yu ,  Zeqian Ren

IPC: E21B10/56 ,  E21B10/567

Abstract: Provided is a novel wear-resistant and collision-resistant polycrystalline diamond compact (PDC) drill bit with rostriform teeth and a plurality of blades, including an upper joint and a drill matrix. The PDC drill bit with rostriform teeth and a plurality of blades breaks rocks jointly by the primary teeth by way of penetration-splitting and the secondary teeth by way of shearing, so that the torque needed to break the rocks is greatly reduced. The design of the plurality of blades balances force distribution between rocks and blades at a shaft bottom, so that the abrasion loss of the teeth within a unit time is reduced. The present invention solves the technical problems in the prior art that cutting positions are abraded, and the teeth are fed slowly and are unreasonably distributed.