During the CO 2 flooding process in fractured low-permeability oil reservoirs, the injected
CO 2 is prone to channeling along fractures due to severe reservoir heterogeneity, resulting …

One of the most prevalent, expensive, and time-consuming problems during drilling
operations is the loss of circulation. Uncontrolled lost circulation of drilling fluids may lead to …

The existence of high conductivity features such as fractures, karst zones, and void space
conduits can severely restrict the sweep efficiency of waterflooding or polymer flooding …

Polymer flooding is a common oil recovery technology. However, the polymer solution is
difficult to be injected into low permeability reservoirs due to its high viscosity, making the …

In the processes of oil and gas drilling, gas easily invades wellbores and adversely
influences the safety in high-pressure gas reservoir drilling activities. In this study, a polymer …

Polymer gels have been widely used in improving oil recovery and decreasing excessive
water production in heterogeneous reservoirs after the long-term water flooding process …

Conformance control treatment of oil reservoirs is one of the techniques that can bring
improvements in both sweep efficiency and reduction of excessive co-production of oily …

In-situ crosslinking gel known for its cost-effectiveness, has been employed for decades to
plug high-permeability features in subsurface environments. However, some commonly …

Abstract Poly (acrylamide)(PAM) has excellent thickening ability as a conventional flooding
agent. However, PAM confronts the problems of high injection pressure and high shear loss …

Preformed particle gel (PPG) treatment is a cost-effective technology for controlling
excessive water production. However, PPG exhibits limited plugging efficiency when dealing …