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Hydraulic Fracturing Techbook 2018

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EPmag.com | August 2018 | 57 HYDRAULIC FRACTURING: BIG DATA Enabling informed decisions Systems like FracStream, developed by ReStream Solutions, integrate into hydraulic fracturing oper- ations by analyzing and making real-time recom- mendations regarding the desired chemical and operational performance specifications to the oper- ator's well design. The system analyzes onsite fluid chemistry and pressure pumping equipment data using relevant datapoints to characterize the real-time status of the process fluids and operations. That informa- tion allows real-time recommendations that enable quick adjustments to controls to achieve the tar- geted fluid specifications. "As it pertains to the operator, first and foremost one of the things they want to know is how their reservoir is responding to the completions activity that is happening on the surface," said Billy Roberts, president and CEO of ReStream Solutions. "They want to know what their data trail is and what the life cycle of the fluid chemistry is and what the rheology is as it relates to the equipment operations and through the length of the frack." Roberts said that information allows operators to determine if the service provider is achieving previously determined key performance indicators and whether the established fracture models are holding up to the scrutiny of what the fracture data are indicating. "At the end of the day, what they want is not only better control around the frack and predictability, but the ability to leverage that dataset that comes off the frack to make better decisions in the future," he said. Data acquired through the analysis of fluid chem- istry, rheology, equipment operations, pressure pump- ing units, pressure and flow rates combine to build a comprehensive framework for ReStream's systems. "That [framework] allows us to make those data- sets actionable," Roberts said. "We can collect all of this data and perform some number-crunching and identify potential problems." Specialized well designs Silverback Exploration recently applied C&J Energy Services' LateralScience system in the Permian Basin. The LateralScience application models the efficien- cies of various drilling conditions to normalize mechanical-specific energy (MSE) results across a lat- eral, which results in the development of stage-spe- cific treatment designs. Additionally, the process interprets drilling data to help guide the placement of stages and perforation clusters to mitigate the negative impact of lateral heterogeneity along the wellbore, according to C&J. In 2016 Silverback Exploration held 35,500 acres in Reeves County, Texas, and, according to C&J, the company had already drilled two Upper Wolfcamp A wells that were optimized using sonic data. Each of the wells had oil IP 30 rates of more than 600 bbl/d, and were considered successful wells by the operator. C&J reported in a case study that Silverback Explo- ration learned of the LateralScience process prior to completing its third well. After applying the system, Silverback Exploration's third Upper Wolfcamp A well achieved significantly better oil IP 30 results of more than 900 bbl/d, according to C&J. As a result, The chart features a comparison of four Silverback Exploration wells in the Upper Wolfcamp A zone of normalized total production. Wells designed with the LateralScience system are shown in orange, and those using sonic data are shown in blue. (Data courtesy of C&J Energy Services)

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