... Abstract This paper surveys the role of re-crosslinkable preformed particle gels (RPPG) in addressing conformance challenges within mature oilfields. Despite widespread preformed particle gel (PPG) application in 15,000+ wells, their limitations in sealing fractures and conduits prevalent...

... Abstract This paper summarizes the work conducted for the project "Development of Swelling-Rate-Controllable Particle Gels to Enhance CO 2 Flooding Sweep Efficiency and Storage Efficiency", a three-year project funded by the US Department of Energy. The overall objective of this project...

... Abstract As an effective conformance control method, gel treatments have been applied widely in mature oilfields to reduce excess water production by preferentially plugging the water thief zones after long-term water flooding. Performed particle gels (PPGs) are becoming more and more popular...

... Abstract Transparent fracture models were constructed to visually track swollen preformed particle gel (PPG) propagation through open fractures and water flow through PPG placed in fractures. It was observed that PPG propagated like a piston along a fracture during PPG injection and a gel pack...

... Abstract The paper describes preformed particle gel (PPG) treatments for in-depth fluid diversion in four injection wells located in the north of Lamadian, Daqing oilfield, China. Lamadian is sandstone oilfield with thick net zones. The selected four injectors have 46 connected producers...

... Abstract Preformed particle gel (PG) has been successfully synthesized and applied to control excess water production in some mature water-flooded oilfields in China. Investigations show that PG is strength- and size-controlled, environment-friendly, stable over long periods of time, and very...

... Abstract Injecting preformed particle gel (PG) as a fluid-diverting agent to reduce water production is an attractive new procedure designed to minimize some of the risks inherent in gel treatments based on in-situ gelling. The objectives of this paper are: (1) understand how to control PG...