Wyoming Petroleum Section


  • Distinguished Lecturer - Amit Singh, Chevron

    Friday, October 15, 2021, 12:00 PM - 01:00 PM MT
    Hydraulic Fracture Design Evolution: Recent Advances in Proppant Transport Understanding Amit Singh, Chevron Abstract:  Effective and economic proppant placement in hydraulically created fractures has been one of key objectives of hydraulic fracture stimulation. Many different proppants, fracture fluids, and proppant placement methodologies have been historically used to achieve desired proppant conductivity and conductive surface area in reservoir. The understanding of the proppant transport mechanism has played a key role in this design evolution to achieve the goal of increased productivity at low cost. The traditional proppant transport laboratory study with standard slot flow test captured basic flow characteristics and shaped historical hydraulic fracture design practices. The standard slot flow test with parallel plates represented only a simplified planar fracture with homogeneous constant width and confined height, and thus, was incapable of capturing proppant transport phenomena impacted by realistic fracture features. With hydraulic fracture design evolution and increased activity specially in unconventional resources (UCR), it is critical to consider proppant transport behavior in realistic fracture features including lateral and vertical tortuosity, variable width, leak-off, fluid dynamics replicating upward fracture growth, etc.   This presentation will share the recent advances in understanding of proppant transport from advanced laboratory and field studies; and how these novel learnings and important design considerations should be applied to optimize a "reservoir-centric hydraulic fracture design". It will also highlight opportunity and need to optimize both proppant and fracture fluid properties along with injection sequence for effective and economic proppant placement thereby achieving well stimulation goals.   Biography:  Amit Singh is a Senior Advisor for Well Stimulation technologies at Chevron with more than 20 years’ experience. He champions development and implementation of new technology and strategy for completion optimization. He has diverse experience of research and development as well as field operation as technology leader in hydraulic fracturing. He holds a BTech degree in Petroleum Engineering from Indian Institute of Technology (ISM Dhanbad). He has published over 25 technical papers and been speaker at multiple international conferences and workshops. He is a Committee Member for SPE HFTC and URTeC, and Associate Editor of SPE’s Production and Operations Journal. Note: this talk is co-hosted by the Wyoming Geological Association (WGA); additional information and registration can be found by clicking the "More information" link below.  Registration will open in October. Please RSVP by Tuesday, October 12 th to WGA at wygeology@gmail.com .

    Contact Information

    Casper, WY, United States

  • Distinguished Lecturer - Dave Cramer, ConocoPhillips Company

    Friday, December 3, 2021, 12:00 PM - 01:00 PM MT
    Integrating Multiple Diagnostic Methods to Determine Limited Entry Treatment Effectiveness Dave Cramer, ConocoPhillips Company Abstract: This presentation covers the essential elements of limited entry treatment design and reviews a case study of plug-and-perf horizontal well treatments in an unconventional shale play. In the case study, various diagnostic methods were used to better understand and quantify the factors determining limited entry effectiveness. Three diagnostic methods were implemented: 1.) injection step-down tests and pressure analysis of the fracturing treatments, 2.) video-based perforation imaging and 3.) distributed acoustic sensing (DAS). In-situ stress variation and perforation erosion were determined to have significant impacts on treatment allocation among perforation clusters. Other undesirable effects such as heel-side flow preference were also observed. Camera images confirmed proppant-induced erosion at the scale of individual perforations. Measurements from the digital images provided comparison points for predictive software using surface pressure measurements. DAS results provided cluster level proppant distribution values. Correlations were also observed between treatment allocation values from DAS data and values derived from perforation friction calculated from Bernoulli’s equation using the image-based entry hole diameter data. The results of the case study indicated that a staggered perforation design using more gradual changes among clusters would lead to a more balanced treatment. This scenario was evaluated along with a job design featuring high excess perforation friction and an equal number of perforations in each cluster. Fracture-simulation runs indicated that both tactics are likely to improve slurry allocation. The key take-away from this lecture is that limited entry treatments can result in effective stimulation along the entire wellbore when the best practices disclosed in the presentation are followed. Note: this talk is co-hosted by the Wyoming Geological Association (WGA); additional information and registration can be found by clicking the "More information" link below.  Registration will open in October. Please RSVP by Tuesday, October 12 th to WGA at wygeology@gmail.com . Biography:  Dave Cramer is a Senior Engineering Fellow on the ConocoPhillips Global Completions Engineering staff in Houston, TX. He specializes in hydraulic fracturing applications.  Dave has published 65 technical papers and holds 2 U.S. patents.  He is a registered Professional Engineer in Colorado.  Industry recognitions include the Henry Mattson Technical Achievement Award, Denver SPE chapter (1993), SPE International Completions Optimization and Technologies Award (2011), SPE International Distinguished Membership Award (2019) and SPE International Cedric K. Ferguson Certificate (2020).  Dave was a SPE Distinguished Lecturer from 2003-2004 and the SPE International Region Director for the U.S. and Canada Rocky Mountain region from 2004-2007.

    Contact Information

    Casper, WY, United States