This paper provides an introduction to the topic of water shutoff and conformance
improvement. After indicating the volumes of water produced during oilfield operations, a …

This paper describes a straightforward strategy for diagnosing and solving excess-water-
production problems. The strategy advocates that the easiest problems should be attacked …

This paper provides guidance on when and where relativepermeability-modification/
disproportionate-permeability-reduction (RPM/DPR) water-shutoff (WSO) treatments can be …

A sodium silicate gelling system with an internal activator, urea, was extensively evaluated
in the lab with bulk gelation experiments, compatibility tests, and coreflood testing using …

An idealistic goal of water-shutoff technology is that of identifying materials that can be
injected into any production well (without zone isolation) and that will substantially reduce …

ABSTRACT In the United States, more than 20 billion barrels of water are produced each
year during oilfield operations. There is a tremendous economic incentive to reduce water …

This report describes work performed during the second year of the project,“Conformance
Improvement Using Gels.” The project has two objectives. The first objective is to identify gel …

Many pilot tests and several commercial field projects have been performed over the past
few decades and have shown that surfactant/polymer and alkaline/surfactant/polymer floods …

The influence of reservoir parameters on water shut-off treatment in hydraulic or natural
fractured reservoirs remains unclear. In the present study, effects of fracture width and matrix …

Water production control is a key issue in most mature reservoirs worldwide. Many
techniques have been developed to achieve this purpose. Water Shut-off (WSO) treatments …