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Vol. 59 No. 2

February 2007

Well Testing

4D-Pressure Pilot Determines Well Spacing in Tight Gas

Obtaining accurate formation pressures in microdarcy rock is a formidable challenge. However, these pressures provide the best data to identify unique reserves. They help to determine the drainage areas as well as appropriate well spacing for tight gas reservoirs. A 4D-pressure pilot was designed and installed to measure pressure drop at two observation wells equipped with pressure gauges. The pressure gauges enable pressure monitoring along the wellbore (in space) and over time, hence the name 4D-pressure pilot.

View a synopsis of SPE 102745 published in JPT

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 102745, "4D-Pressure Pilot To Steer Well Spacing in Tight Gas," by E. Quint, M. Singh, SPE, P. Huckabee, SPE, D. Brown, C.B. Brake, J. Bickley, and B. Johnston, SPE, Shell E&P Americas, prepared for the 2006 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24-27 September.

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