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Vol. 59 No. 9

September 2007

Reservoir Performance and Monitoring

4D Microgravity Surveillance of a Waterflood—Prudhoe Bay, Alaska

A 4D surface-gravity surveillance of a waterflood was implemented at Prudhoe Bay, Alaska. This monitoring technique is essential for surveillance of the gas-cap water-injection (GCWI) project. Drilling numerous surveillance wells to monitor water movement adequately would have been cost-prohibitive. Field surveys showed conclusively that density changes associated with water replacing gas are readily detected by use of high-resolution surface-gravity measurements.

View a Synopsis of SPE 101762 as published in JPT.

This article, written by Technology Editor Dennis Denney, contains highlights of paper SPE 101762, “Results of the World’s First 4D Microgravity Surveillance of a Waterflood—Prudhoe Bay, Alaska,” by J.L. Brady, SPE, BP Exploration Alaska; J.L. Hare, Zonge Engineering; J.F. Ferguson, U. of Texas at Dallas; J.E. Seibert, Seibert & Assocs.; and F.J. Klopping, T. Chen, and T. Niebauer, Micro-g Lacoste, prepared for the 2006 SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24–27 September.

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