A Water Plugging Agent of High Temperature and Low Permeability Reservoirs

Abstract

A novel water plugging agent with gelatinous polymer cross-linked in high temperature and low permeability reservoirs was studied in our laboratory. The ingredients used to make the water plugging agent were a polymer monomer, a cross-linker, and other compounds. All the components can be mixed in water easily. At normal temperature, the solution of the water plugging agent can be stable for months. The viscosity of the solution is less than 10 mPa s, which is easy to be injected deep into the low permeability reservoir. On-line injection of the single liquid method can be realized in the process of a site application. At high temperature, 120 degrees centigrade or above, the solution can be cross-linked in several hours and produce a high tensile strength gel. When the solution is injected into high-temperature reservoirs, a cross-linking reaction can occur. The cross-linking product can be used as a water plugging agent in the interest interval to control water. Some experiments of the gel were carried out in our laboratory, such as rheological test, spectrometric analysis, electron microscopy scanning, and so on. The displacement experiments of natural cores were carried out too.

Copyright 2017, Shanxi Petroleum Society.

This paper was prepared for presentation at the 2017 International Petroleum and Petrochemical Technology Conference in Beijing, China, 20–22 March, 2017.

This paper was selected for presentation by the IFEDC&IPPTC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC&IPPTC Committee and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC&IPPTC Committee, its members. Papers presented at the Conference are subject to publication review by Professional Committee of Petroleum Engineering of Shaanxi Petroleum Society. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of Shaanxi Petroleum Society is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC&IPPTC. Contact email: paper@ifedc.org or paper@ipptc.org.