Northside: Well Performance Evaluation and "Best Practices" for Completing Liquids Rich Conventional and Unconventional Reservoirs

Speaker Robert Barba
  Bob spent 10 years with Schlumberger as an open hole field engineer, sales engineer, and product development manager. While at Schlumberger he was the US product champion for the FracHite and Quantifrac products that integrated wireline, testing, and pumping inputs to optimize hydraulic fracture treatments. Since then he has ...


 

Bob spent 10 years with Schlumberger as an open hole field engineer, sales engineer, and product development manager. While at Schlumberger he was the US product champion for the FracHite and Quantifrac products that integrated wireline, testing, and pumping inputs to optimize hydraulic fracture treatments. Since then he has spent 20 years consulting to over 200 companies on petrophysics and completion optimization. He served as a SPE Distinguished Lecturer on integrating petrophysics with the hydraulic fracture treatment optimization process. He has focused on the integration of petrophysics with completion designs in a variety of reservoirs in North America, conducting numerous field studies for operators evaluating the "completion efficiency" of over 1500 wells and providing "best practices" recommendations based on the study results (SPE 90483). He has been responsible for the petrophysical analysis of 35 major fields worldwide as part of integrated reservoir characterization studies identifying remaining mobile oil and gas. He has authored 33 technical papers on the integration of petrophysics with completion designs, horizontal wells, and reservoir characterization projects. Bob was a pioneer in the characterization of the Wolfberry with three SPE and two SWPSC papers on optimizing fracture treatments in the Spraberry/Dean/Wolfcamp in the late 1980’s and early 90’s. Bob has a BS from the US Naval Academy and MBA from the University of Florida. He is also a member of the SPE, SPWLA, AAPG, and Petroleum Society of the Canadian CIM.

Full Description
The current “shale gale” phenomena started in the Barnett gas play in 2003 with the introduction of multistage horizontal well fracs. The primary focus of the industry for the next 8 years was development of shale gas plays and shale gas frac optimization was the subject of numerous conferences and studies. The phenomenal success of shale gas operators has been a two edged sword, though, with respect to natural gas prices. The price of success has been a flood of natural gas into the system that has resulted in a sub-economic price for most of the main shale gas plays. The liquids side of the business, though, has seen a significant surge in activity fueled by oil prices in the $90 per barrel range. While initially operators attempted to employ shale gas completion techniques in the liquids plays, it became apparent early on that the liquids plays were different. Understanding the nature of the differences is critical to optimizing completions in these plays. Small pore throat sizes and low fracture conductivities that were adequate for gas flow are not always effective conduits for liquids flow. This results in liquid prone reservoirs having much tighter “sweet spots” for optimum proppant placement. A methodology is proposed that characterizes these “sweet spots” to evaluate expected stage and well performance. This characterization is integrated with the rock mechanical properties profile to develop “best practices” for completing these liquids rich reservoirs. Case histories will be presented to validate the process.
 
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Organizer Sumitra Mukhopadhyay