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Integration of Wireline Borehole Image and Seismic Data: Structural and Stratigraphic Study of the N-Sand in the Helis East Black Bay Field Extension

Anish Kumar1, Brian Briscoe2, George R. Kear2, Terry D. Keegan3, Paul N. Lawless3, Jonathan W. Malone2, James P. Stoyanoff3, and Elizabeth Zobell4
1 Schlumberger, 1325 S. Dairy Ashford Rd., Houston, Texas 77077
2 Schlumberger, 1515 Poydras St., New Orleans, Louisiana 70112
3 Helis Oil & Gas Company, L.L.C., 228 St. Charles Ave., Ste. 912, New Orleans, Louisiana 70130
4 Department of Geology, Brigham Young University, Provo, Utah 84602

Integration of wireline borehole image and dip data with seismic data always results in a more complete geological understanding of any working area. Borehole image and seismic data were used in a structural and stratigraphic study of the Helis East Black Bay Field Extension (offshore Louisiana) to determine the geological history of the N-Sand.

This paper describes the methodology used in the study. Values of structural dip were obtained from high quality microresistivity images and compared to those determined from seismic two-way travel time values for the N-Sand. Paleocurrent direction and energy of deposition was determined by integrating water based mud microresistivity image interpretation and stratigraphic dips (structure-deleted dips). The depositional history interpretation was accomplished using static and dynamic borehole images and stratigraphic dips. This paper discusses the deposition of the N-Sand, including transgressive and regressive cycles, and compares the results with published sequence stratigraphy of the Miocene.


AAPG Search and Discover Article #90069©2007 GCAGS 57th Annual Convention, Corpus Christi, Texas