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 …

For the past decades, long-term water flooding processes have led to water channeling in
mature reservoirs, which is a severe problem in oilfields. The development of better plugging …

Gel syneresis is a common problem in gel treatment for oil recovery applications. In this
study, a stable gel was prepared in a soft brine by using a water-soluble phenolic resin as a …

Preformed particle gel (PPG) treatment is now one of the most effective remediation
techniques for conformance controlling and selective plugging of high-water flow conduits in …

Polymer gels are frequently applied for conformance improvement in fractured reservoirs,
where fluid channeling through fractures limits the success of waterflooding. Placement of …

Polymer gel is often used to reduce flow through highly conductive fracture networks,
frequently present in naturally fractured carbonate reservoirs. When in place, polymer gel …

Excessive water production increases operational costs and causes environmental issues.
The water source can be from either aquifer encroachment or breakthrough during …

The double-network prepared with an in-situ monomer gel and a fast-crosslinked Cr (III) gel
is introduced to develop a thixotropic and high-strength gel (THSG), which is found to have …

Polymer solutions are used in chemical EOR processes to achieve incremental oil
recoveries through obtaining favorable mobility ratios. In the process, the in-situ viscosity is a …

This study investigates the effects of different parameters on the in-situ gelation of a
polyacrylamide/chromium (VI)/thiourea solution using numerical modeling. The effects of …