2004
DOI: 10.1115/1.1781672
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Evaluation of a Statistical Method for Assessing Infill Production Potential in Mature, Low-Permeability Gas Reservoirs

Abstract: Background. Identifying the locations and amounts of unproduced gas in mature reservoirs is often a challenging problem, due to several factors. Complete integrated reservoir studies to determine drilling locations and potential of new wells are often too time-consuming and costly for many fields. In this work, we evaluate the accuracy of a statistical moving-window method (MWM) that has been used in low-permeability (“tight”) gas formations to assess infill and recompletion potential. The primary advantages o… Show more

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Cited by 8 publications
(10 citation statements)
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“…Guan et al (17)(18)(19) have systematically evaluated the accuracy of the moving window technique and they concluded that this technique can accurately predict infill well performance for a group of infill candidates, often to within 10%. However, predicted infill potential for individual wells can be off by more than +/-50%.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Guan et al (17)(18)(19) have systematically evaluated the accuracy of the moving window technique and they concluded that this technique can accurately predict infill well performance for a group of infill candidates, often to within 10%. However, predicted infill potential for individual wells can be off by more than +/-50%.…”
Section: Discussionmentioning
confidence: 99%
“…In an effort to explain why the fast method does not accurately predict infill well performance for certain individual wells, Guan et al (17)(18)(19) closely examined the wells for which the technique overestimated or underestimated performance by more than 50% in a test data set and they found that the primary reason for inaccurate predictions is unsampled high local variability in permeability. For example, the fast method will underestimate the performance of an infill well offsetting a low-permeability well if there is a high permeability located nearby that is not sampled by a well.…”
Section: Discussionmentioning
confidence: 99%
“…So, According to Eqs. (5) and (8), we should get a straight line by plotting cumulative production versus a certain function of time.…”
Section: Methods Procedures and Examplementioning
confidence: 99%
“…Based on Eqs. (5) and (8), we should plot cumulative production versus f'^ for bilinear flow and i"^ for linear flow. In majority of cases, we observe that linear flow works the best.…”
Section: Methods Procedures and Examplementioning
confidence: 99%
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