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Reservoir evaluation and geologic modeling for the Clinton Eastern tight gas formation. Phase I, final report

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In an effort to better understand the geologic and engineering factors that explain the production performance of the tight Clinton Sandstone of Eastern Ohio, Log cumulative gas production vs. the log of producing time curves, logs and completion data were evaluated for a number of Clinton sandstone wells in the Tuscarawas, eastern Coshocton and eastern Holmes County area of east central Ohio. The wells were divided into low slope (0.6), Radial, groups, based on plots of log cumulative production vs. log time. The distributions of expected recoveries from these two groups of wells were compared using the Chi Square and Pearson's P-M correlations, and were found to be significantly different. The linear wells had a median expected ultimate recovery of less than 20 MMCF while the radial group had a median of more than 50 MMCF. Both the radial and linear distributions were polymodal, and were divided into low, transitional and high production segments. A reasonable hypothesis is that the high productivity wells were producing from reservoirs in which the permeability was augmented by fracturing. The logging suite generally used for the Clinton wells evaluation was not adequate to use as a basis for predicting well performance with any high degree of certainty. However, the calculated production from the low slope wells exhibited a reasonable correlation with the actual cumulative production at the breakpoint on the log cumulative production vs. log time curves (this breakpoint indicates that the reservoir boundary has been encountered). 11 references, 21 figures, 4 tables.

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Last Updated September 29, 2016, 16:05 (LMT)
Created September 29, 2016, 16:05 (LMT)
Citation Knutson, C.F. ---- Roy Long, Reservoir evaluation and geologic modeling for the Clinton Eastern tight gas formation. Phase I, final report, 2016-09-29, https://edx.netl.doe.gov/dataset/reservoir-evaluation-and-geologic-modeling-for-the-clinton-eastern-tight-gas-formation-phase-i-fi
Netl Product yes
Poc Email Roy.long@netl.doe.gov
Point Of Contact Roy Long
Program Or Project KMD
Publication Date 1984-9-1