公开(公告)号：US20200063020A1

公开(公告)日：2020-02-27

申请号：US16071081

申请日：2018-02-09

Applicant: Southwest Petroleum University

Inventor： Jincheng MAO ,  Yang ZHANG ,  Jinzhou ZHAO ,  Xiaojiang YANG ,  Heng ZHANG

IPC: C09K8/68 ,  C09K8/88

Abstract: An ultra-high temperature fracturing fluid, including the following components in mass percentages: 0.4 wt %-0.8 wt % of a polymer thickener, 0.015 wt %-0.02 wt % of a non-metallic crosslinking agent, 0.04 wt %-0.06 wt % of a gel breaker and the rest is water. The polymer thickener is obtained by a polymerization of acrylamide, acrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, rigid monomer and cationic hydrophobic monomer in a weight ratio of 55-70:15-20:15-20:0.5-3:0.1-1.0, the polymerization temperature is 30-40° C. and the polymerization time is 8-10 hours. The fracturing fluid of the present invention can effectively solve the technical problems that traditional fracturing fluids are easily decomposed at high temperatures and affect performance.

公开(公告)号：US20210222057A1

公开(公告)日：2021-07-22

申请号：US17139022

申请日：2020-12-31

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Xiaojiang YANG ,  Difei HAN ,  Jincheng MAO ,  Heng ZHANG ,  Chong LIN ,  Jinhua MAO ,  Jinzhou ZHAO

IPC: C09K8/74 ,  C09K8/60 ,  C09K8/54

Abstract: An emulsifier with high temperature resistance, low viscosity and low corrosiveness, and an emulsified acid system comprising the same. The emulsifier includes a viscoelastic surfactant, which is prepared by a quaterization of fatty acid acyl propyl dimethylamine and a halogenated compound; by a quaterization of a long-chain halogenated hydrocarbon and a tertiary amine compound; or by a reaction of the fatty acid acyl propyl dimethylamine with a linking group synthesized by epichlorohydrin and an alkylamine compound.