Study of a Profile Control Agent Applied in an Offshore Oilfield

摘要

Polymer gels are used to stop unwanted fluid production from oil and gas wells. One of the most important types of gel is composed of polymer and phenol formaldehyde resin, which is synthesized by phenol and formaldehyde under alkaline conditions. The gelation time is in a wide range of several days to 10 days. Cross-linking occurs in a wide range of pH values and is sensitive to temperature. The phenol formaldehyde resin gel has good rheological behavior and thermal stability. Core flooding experiments show that the mentioned gel has good injectivity and plugging ability, especially selective plugging ability.