What are the different types of polyacrylamide polymer gels?

Based on their compositions and application conditions, polyacrylamide polymer gels can be classified into three types: in-situ monomer-based gel, in-situ polymer-based gels, and preformed particle gels. Initially, in-situ mono- mer gels which are mainly composed of acrylamide were developed for water shutoff.

What is a polyacrylamide gel system?

The gel system consist a cross-linked, sulfonate-containing polyacrylamide microparticle with both labile and stable cross-linkers . An inverse emulsion polymerization process ensures a narrow particle size range.

Can polyacrylamide gels be used in harsh environments?

Organically cross-linked PAM-related system To apply gel systems in harsh environments such as those with high temperatures, high salinity, and high pH, Chang et al. synthesized a polyacrylamide gels based on the cross-linking reaction between phenolic compounds (e.g., phenol and resorcinol) and formaldehyde.

What is a gel polymer system?

One of the most useful materials in chemical treatment with simple and costless preparation is a system of gel polymers, which comprise of water, a crosslinker, a water-soluble polymer, and some other additives, altogether called a gelling solution. When a polymer reacts with a crosslinker, a gel polymer system is formed.

What is the HPAM/Cr(III) acetate gel system?

The HPAM/Cr (III) acetate gel system is a total upgrade package over inorganic Cr (III) compounds and Cr (VI) chemical complexes. It is insensitive to pH from about 2 to 12.5 and also has some degree of resistance to chemical interferences, such as ions in the formation fluids, H 2 S, and CO 2 .

What is the re-view of polymer gel development process?

The primary purpose of the re- view is to review polymer gel development process and their applications, from which the investigators interested in gel treatments can develop better gels to meet the current needs of mature oilfields. 1. Current polymer gel techonology 1.1.