This paper compares the performance of infill wells drilled in the Kansas Hugoton to the companion original wells - regionally, by operator, and the field as a whole, using official deliverability tests and production history. We present the pitfalls of using official deliverability and wellhead shut-in pressure differences between the infill wells and the companion original wells as indications of additional gas-in-place and suggest more reliable methods of interpreting infill well performance. The results of the first 659 infill wells drilled in the Kansas Hugoton reveal that the infill wells have not found any evidence of additional gas-in-place.

Keywords:
kansas hugoton, wellhead shut-in pressure, reservoir surveillance, infill well, gradient, well performance, permeable layer, fetkovich, inflow performance, production monitoring
Subjects:
Well & Reservoir Surveillance and Monitoring, Formation Evaluation & Management, Asset and Portfolio Management, Drillstem/well testing, Well performance, inflow performance, Field development optimization and planning
Copyright 1990, Society of Petroleum Engineers
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