ABSTRACT

The Lily Boom Prospect was one of the largest discoveries in South Louisiana in the 1990's. The prospect was defined by 3-D seismic. It was not the primary lead idea (Plan A), but was one of several secondary prospect ideas (Plan B). A non-exclusive 3-D survey was acquired over the prospect area, providing adequate seismic coverage to identify Plan B.

Lily Boom was tested in 1999 by the TMRX No. 1 Thibodaux, which logged 238' of pay in Lower Miocene Operculinoides sands. Through January 1, 2003, gross production was 42 BCF and 1.8 MMBL from six producing wells, with an estimated ultimate recovery of 130 BCF and 8.2 MMBL. The traps are a primary three-way closure and ancillary fault wedge closures, downthrown to the Ramos field fault.

TMRX underwrote the center 60 square miles of a 101 square mile non-exclusive 3-D survey to evaluate the original play concept; fault closures on north dip caused by the giant Turtle Bayou Field structure to the south. The 3-D seismic indicated no strike closure on the original lead ideas, but downthrown to the Ramos fault. The primary downthrown closure is approximately two miles east-southeast showed a large untested area updip to wells that had been relatively minor Operculinoides producers from the upthrown Ramos Field closure. Because of the projection of the upthrown structural axis across the Ramos fault, and because of inadequate seismic and subsurface control, the scope and location of the downthrown structure had gone unrecognized.

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