Abstract
ABSTRACT The Hugoton Field in southwestern Kansas, western Oklahoma and northwestern Texas is the largest gas field in North America. Gas production is from the shallow (2,100+ feet to 2,900+ feet) heterogeneous, multi-layered Chase gas reservoir. This paper analyzes performance of wells in the Kansas Hugoton field. It compares volumetric and performance data from original and more recent infill wells within this field. These comparisons are shown by field, operator grouping, and infilled unit grouping using official deliverability tests and production history. The results are compared against geologic distributions, by producing layer, across the field. A cumulative comparison of the original versus infill well shut-in pressure difference is shown for the first 318 units infilled since infill drilling began in 1987. Some specific case studies are shown comparing monthly and daily well performance surveillance data. This analysis shows: (1) Some of the pitfalls of estimating initial gas-in-place (IGIP) and recoverable reserves, (2) The need to look at more than one type of analysis in reaching conclusions, and (3) Reasons why infill wells have not developed significant fieldwide incremental reserves.
Published Version
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