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SPE YP - March Lunch & Learn

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Liberty Oilfield Services, LLC.

950 17th Street

##24

Denver, CO 80202

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INTEGRATING ROCK PROPERTIES AND FRACTURE TREATMENT DATA TO OPTIMIZE COMPLETIONS DESIGN
Joel Mazza, Technical Solutions Manager & Carrie Glaser, Petrophysics Manager at FractureID

Abstract

A horizontal well landed in a single formation rarely encounters homogeneous rock from the heel to the toe of the wellbore. When analyzing treatment responses that occur during hydraulic fracturing, a decreasing trend in surface treating pressure in sequential stages is typically attributed to reduced friction within the casing or frac string. However, there are several variances in treating pressure that are not readily explained by examining the surface pressures and pipe friction in isolation. These variances are also apparent when looking at bottom hole injectivity. Combining surface data and geomechanical data quickly reveals the degree of variability in rock properties along a lateral and the impact that variability can have on a completion, leading to a more optimal design. This study relies on the analysis of proprietary high-resolution geomechanical data derived from the processing of accelerations measured at the drillbit and high-frequency fracture treatment data recorded at one-second intervals. The data were standardized to a common format, screened for quality control, normalized, and analyzed using a data management platform. The methodology combines critical mechanical rock properties such as Young's Modulus, and Poisson's ratio with high-frequency fracture treatment data, including treating pressures, rates, and fluid and proppant volumes. Further application of the geomechanical data to derive brittleness allows for construction of a more predictive petromechanical model to optimize completion approaches. This study of six Eagle Ford wells suggests that rock properties are the dominant variables affecting fracture treatment pressure and bottomhole injectivity. This method can be used to predict trouble stages, improve operational efficiencies, and optimize proppant placement.


Bio

Carrie Glaser – Manager, Petrophysics at Fracture ID

Carrie Glaser has over 11 years in oil and gas. She was recruited by ExxonMobil in 2007 from the University of Washington where she received an M.S. in geology. At ExxonMobil she benefited from outstanding mentorship for two years in geology & geophysics and an additional four years in petrophysics. Carrie went to work for Anadarko in Denver in 2013. While her experience at ExxonMobil had been primarily in international exploratory basins and offshore producing fields, her assets at Anadarko were onshore in the U.S. Rocky Mountain region. Carrie remained at Anadarko for four years before leaving to pursue a burgeoning field of study – geomechanics-focused petrophysical evaluation (petromechanics) - with Fracture ID.

Joel Mazza, PE – Technical Solutions Manager at Fracture ID

Over the past 13 years, Joel has worked in various technical engineering and management roles in the oil and gas industry. He started his career at Halliburton as a Production Enhancement engineer and later consulted both in the field and in-house for operators. Joel’s primary expertise is in stimulation design, diagnostics, implementation and modeling but also has experience in reservoir and production engineering. Joel has worked in and around virtually every major unconventional play in the continental US. On the Fracture ID integration team, he provides guided solutions to operators looking to understand how high resolution geomechanical properties affect their completion decisions and effectiveness.

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Liberty Oilfield Services, LLC.

950 17th Street

##24

Denver, CO 80202

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