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SWLGS Luncheon Topics

Updated January 20, 2004

Lily Boom Prospect, Ramos Field: It's Good to Have a d Plan B
LGS Continued Education
Progressive Seismic Data Mining For Reservoir Characteristics
Seismic Interpretation of Sonic Logs
Rejuvenation Using Unique Frequency Enhancement Technology
Turning Rays and Anisotropy in Prestack Time Migration
Prestack Depth Imaging in the Eastern GOM
Imaging of a Salt Face and Truncating Updip Sands...
3D Seismic Recognition Of The Jurassic Smackover Reservoir
Imaging Through Gas Clouds
The Role of Visualization in Resource Expl. & Dev.
AVO Analysis in the Middle Miocene, Central GOM
Liuhua 11-1 Field, South China Sea
Turtle Bayou - Development History
Geologic Overview of NE Miss. Fan & Delta
DeepWater AUV Experiences
Workstation Visualization Techniques
Improved AVO Crossplot Evaluation
Baldpate Field (GB 260)
4th Wave Imaging
The Seismic Well Log
Subsalt Exploration in the Deepwater Foldbelts, GOM
Seismic Attributes Past, Present, and Future

March 11, 2003
11:30 am
Lafayette Petroleum Club

Seismic Interpretation of Sonic Logs
Jonathan Bork

Abstract Summary: 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 and was not the primary lead idea (Plan A), but one of several secondary pre 3-D lead ideas (Plan B). A non-exclusive 3-D survey (Plan B2) was acquired over the entire lead area, providing adequate seismic coverage to define the Lily Boom Prospect.

Lily Boom Prospect was tested in 1999 by the TMRX No. 1 Thibodaux well, which logged 238' of pay in Lower Miocene Operc sands. Through January 1, 2003, gross cumulative production was 42 BCF and 1.8 MMBL from six producing wells, with an EUR 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, imaging the original play concept (fault closures on north dip caused by the giant Turtle Bayou Field structure to the south, the lead ideas, and the upthrown Ramos Field. The 3-D seismic indicated no strike closure on the original lead ideas, but showed a large untested area updip to wells that had been relatively minor Operc producers downthrown to the Ramos fault.

Lily Boom's full potential had remained unrecognized because the primary downthrown closure is ~2 miles ESE of the upthrown Ramos Field closure. Because of inadequate seismic and subsurface control, previous mapping simply projected the upthrown structural axis across the Ramos fault. As a result, the scope and location of the downthrown structure had gone unrecognized.

Biographical Sketch: Jonathan Bork received his BS and MS degrees in geology from Michigan State University in 1965 and 1967 respectively and his Ph.D. degree in Geophysics from Colorado School of Mines in 1973. He has worked in exploration offices in New Orleans, Houston and London for Amoco but spent more than 20 years at Amoco's Tulsa Research Center as a Research Supervisor in Interpretation, Field Acquisition, Modeling, AVO and Inversion. Since 1998 he has worked for Apache Corporation in Houston, doing rock property and seismic modeling and AVO interpretation.