The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2021
Filed:
Oct. 15, 2020
Southwest Petroleum University, Chengdu, CN;
Fayang Jin, Chengdu, CN;
Daijun Du, Chengdu, CN;
Wanfen Pu, Chengdu, CN;
Xiang Li, Chengdu, CN;
Ye Ju, Chengdu, CN;
Kexing Li, Chengdu, CN;
Lin Sun, Chengdu, CN;
Rui Liu, Chengdu, CN;
Shuyu Song, Chengdu, CN;
Mian Wang, Chengdu, CN;
Wei Liao, Chengdu, CN;
Desheng Qian, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Abstract
A particulate profile control agent self-adaptive to a size of formation pore throat and a preparation method thereof include: raw materials and mass fraction for preparing a system including a main agent of 0.04˜0.2%, a nucleating agent of 0.005˜0.01%, a crosslinking agent of 0.002˜0.04%, an additive of 0.005˜0.01% and water. The preparation method includes: adding the main agent in proportion to the water and evenly mixing the mixture of the main agent and the water, and then adding the additive, the crosslinking agent and the nucleating agent in turn so as to form the profile control agent; pumping the profile control agent into the formation to be reacted at a reservoir temperature for a period of time to form colloidal particles on the spot for sealing off a high-permeability layer. The present disclosure is of easy operation and low cost, low initial viscosity and good injectivity.