Abstract After single-gas (SG) injection operations in tight oil reservoirs, a significant amount of is still unrecovered. To increase productivity, several sequencing gas techniques have been utilized. Given the scarcity research on multiple-gas alternating schemes, this study propose an optimized triple-alternating-gas (TAG) for improved recovery. The performance TAG process was demonstrated ...

Shale gas is one of the primary types of unconventional reservoirs to be exploited in search for long-lasting resources. Production from shale gas reservoirs requires horizontal drilling with hydraulic fracturing to achieve the most economic production. However, plenty of parameters (e.g., fracture conductivity, fracture spacing, half-length, matrix permeability, and porosity, etc) have high un...

Water loss in low permeability reservoirs during hydraulic fracturing well completions typically results in a decrease in natural gas production due to capillary trapping near the fractures. Shale gas reservoirs, however, have shown a trend of improved gas production with increased loss of completion fluids to the shale. This nonintuitive relationship between water imbibition and enhanced gas p...