Industry-reference reservoir simulator for black oil, compositional, thermal, and streamline reservoir simulation.
An independent operator holding leases in the oil window of the prolific South Texas Eagle Ford shale play found that it would soon need to make a critical economic decision about the fate of its assets. The operator needed questions answered about the key production drivers, oil in place, effective drainage area of a typical horizontal well with multistage fracture completions, and oil recovery expectations over a 10-year period.
Not only were decision makers on a short timeline, they also faced major technical constraints; existing well data for petrophysical analysis were limited—both in number and quality—and no cores were available. Despite the current practice of drilling horizontal laterals with multistage completions, the operator's well and production data came only from vertical wells with singlestage completions.
Because the operator lacked the experience and modeling tools to conduct a full evaluation, its management approached Schlumberger to develop a reliable quicklook petrotechnical evaluation of its assets—despite limited time and data. In collaboration with the operator, Schlumberger petrotechnical specialists with experience in the Eagle Ford area performed a rapid petrophysical analysis of digital log data from 21 vertical wells. Using the Petrel E&P software platform, the team built a 3D static reservoir model and populated it with petrophysical properties to calculate original oil in place (OOIP).
Schlumberger completed the entire asset evaluation in less than 1 month, answering the operator's primary questions.
The results of petrophysical analysis and reservoir modeling indicated the Eagle Ford acreage under consideration contained significant volumes of oil in place. The report provided a reliable estimate of oil per acre. Petrotechnical specialists found that the two highest-ranking production drivers in the study area were natural fractures and hydrocarbon pore volume. They were able to forecast low, median, and high oil and gas cumulative production estimates for up to 30 years.
Through collaboration, Schlumberger delivered a working model of the asset, which provided the operator's management team with information to estimate the play's long-term value and make better-informed economic decisions. As a result, they developed a firm plan to move the asset forward and meet strategic objectives.
Challenge: Obtain a thorough quicklook evaluation of potential oil recovery from Eagle Ford shale assets to support strategic economic decisions.
Solution: Deploy Schlumberger specialists to conduct a rapid, in-depth assessment and then collaborate with operator’s experts.
Results: Completed project in less than a month; identified production drivers, oil in place, and potential long-term recovery; enabled operator to develop firm plans for asset.