公开(公告)号：US12110449B1

公开(公告)日：2024-10-08

申请号：US18391726

申请日：2023-12-21

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Jintang Wang ,  Bo Liao ,  Xiaohui Sun ,  Jiaqi Xu ,  Yingrui Bai ,  Jian Li ,  Xianbin Huang ,  Jiafeng Jin ,  Meichun Li ,  Shenglong Shi ,  Kaihe Lv ,  Jingping Liu ,  Jinsheng Sun

IPC: C09K8/42

CPC classification number: C09K8/426

Abstract: Disclosed is a bio-enzyme degradable temporary plugging material and a preparation method and application thereof in the technical field of natural gas hydrate drilling and production; the preparation method of the bio-enzyme degradable temporary plugging material includes the following steps: mixing the ceramsite with an aqueous solution of 3-aminopropyl trimethoxysilane before a stirring reaction and drying to obtain modified ceramsite; and fully dispersing the modified ceramsite, ethyl cellulose, and epoxy resin in dichloromethane to obtain an oil phase; adding the oil phase into a gelatin aqueous solution and mixing uniformly; after a stirring reaction, evaporating an organic solvent, filtering, washing, and drying, to obtain the bio-enzyme degradable temporary plugging material.

公开(公告)号：US11578250B1

公开(公告)日：2023-02-14

申请号：US17749822

申请日：2022-05-20

Applicant: China University of Petroleum (East China)

Inventor： Jingping Liu ,  Jinsheng Sun ,  Kaihe Lv ,  Jintang Wang ,  Jiafeng Jin ,  Yingrui Bai ,  Xianbin Huang ,  Jian Li ,  Shenglong Shi

IPC: E21B43/26 ,  C09K8/467 ,  C09K109/00

Abstract: The present disclosure to a cementitious plugging wall solidifier for water-based drilling fluid and a preparation method thereof and a water-based drilling fluid.

公开(公告)号：US12043742B2

公开(公告)日：2024-07-23

申请号：US17822764

申请日：2022-08-26

Applicant: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)

Inventor： Yingrui Bai ,  Jinsheng Sun ,  Kaihe Lv ,  Guancheng Jiang ,  Rongchao Cheng ,  Weian Huang ,  Jintang Wang ,  Jingping Liu ,  Xianbin Huang ,  Jiafeng Jin ,  Jian Li ,  Shenglong Shi

IPC: C08L93/04

CPC classification number: C08L93/04 ,  C08L2205/03

Abstract: An oil-soluble thermosensitive resin lost circulation material for protecting a reservoir includes the following raw materials in parts by weight: 40-60 parts of resin matrix, 15-40 parts of modified asphalt, 5-12 parts of viscosity modifier, 2-5 parts of cross-linking agent, 6-15 parts of softening point modifier, and 1-3 parts of dispersant; it further provides a method for preparing the resin lost circulation material; the resin lost circulation material can melt and adhere in different temperature ranges, rapid plugging is realized, and the plugging time is long; the oil-soluble thermosensitive resin lost circulation material can be dissolved by oil flow during oil well production, so that the reservoir permeability is recovered, so as to achieve the purpose of protecting the hydrocarbon reservoir.

公开(公告)号：US11970655B2

公开(公告)日：2024-04-30

申请号：US17966516

申请日：2022-10-14

Applicant: China University of Petroleum (East China)

Inventor： Jingping Liu ,  Jinsheng Sun ,  Kaihe Lv ,  Meichun Li ,  Jintang Wang ,  Jiafeng Jin ,  Yingrui Bai ,  Xianbin Huang ,  Jian Li ,  Shenglong Shi

IPC: C09K8/24 ,  C09K8/42 ,  E21B21/00

CPC classification number: C09K8/24 ,  C09K8/426 ,  E21B21/003 ,  C09K2208/10

Abstract: A high temperature and high salinity-resistant complementarily rigid-flexible plugging agent, a method for preparing the same, and a water-based drilling fluid and a use thereof.