Assessing Well Performance in a Prolific Liquids-rich Shale Play—An Eagle Ford Case Study

Comprehensive Outlook into Critical Roles of Pressure, Volume, and Temperature (PVT) and Phase Behavior on the Exploration and Development of Shale Oil

“…Due to the progress of hydrocarbon generation, the products tended to change into smaller molecules with the increase of maturity, which led to the rise of GOR and a marked change in phase behavior. The maturity of high-yield shale in the U.S. ranges from Ro = 1.0% to 1.6%, while the produced oil and gas has a GOR of >200m 3 /m 3 , and the main phases are condensate and volatile oil. , The maturity of shale in petroliferous basins is a wide range; for instance, the maturity of continental shale in China is generally lower than that of high-yield shale in the U.S. (Figure ). Even though the shale maturity in some regions has reached that of high-yield shale in the U.S., there is limited research on phase behavior.…”

Paleoenvironment and source-rock potential of the Cenomanian-Turonian Eagle Ford Formation in the Sabinas basin, northeast Mexico

“…In Texas (southern USA) and northern Mexico, the Eagle Ford Formation is a laminated, calcareous, locally organic-rich unit deposited during the Cenomanian-Turonian time period and constitutes one of the largest hydrocarbon source-rock across the Gulf of Mexico basin (Eguiluz de Antuñano 2001; Edman and Pitman, 2010;Lock et al, 2010;Hildred et al, 2011;Donovan et al, 2012Donovan et al, , 2016Clarke et al, 2016;Fairbanks et al, 2016;Ortega-Lucach et al, 2018;French et al, 2019). Currently, about 23 000 wells in south and west Texas produce more than 5 286 million cubic feet (MMcf) per day of natural gas and about 873 700 barrels of oil per day (Texas Railroad Commission, 2020).…”