At GRI study demonstrated that higher conductivity fractures produced 18 BCF more gas than sand fractures (225 MMCF per well). The study further demonstrated that a fracture treatment “optimized” for the median formation permeability resulted in a significant loss of potential revenue when higher permeability streaks were unexpectedly contacted.
This paper describes a four-step methodology developed to quantify the benefits of advanced hydraulic fracturing techniques. Three case studies illustrate application of this methodology in a variety of study sizes to quantify the benefits of fracture treatment optimization, fracture treatment quality control, and on-site fracture treatment diagnostics and real-time analysis. These benefits result from increased production, completion/stimulation cost savings, or some combination of both. Benefit-To-Cost ratios are 3:1 to 5:1, and the largest study indicates the technology benefits may be derived from as few as 10% to 20% of the technology application wells. Technology benefits are sometimes location dependent: a specific technology may be significantly beneficial in one area but not cost effective in another area of the same field. This paper outlines the documentation of $19 million in benefits on 105 AST wells.
Author(s): G.W. Voneiff, C.W. Hopkins, S.A. Holditch & Associates, Inc.; D.G. Hill, Gas Research Institute
Paper Number: SPE 37934