Seismic amplitude extraction techniques for the recognition of deepwater sediment dispersal patterns in the Western Gulf of Mexico <p> HR: <span class="hr"> 0830h<br></span> AN: <span class="an"> NS51A-03 <a href="../absbook/sm05_NS51A.html">[Abstracts]</a><br></span> TI: <span class="ti"> Seismic amplitude extraction techniques for the recognition of deepwater sediment dispersal patterns in the Western Gulf of Mexico <br></span> AU: <span class="au"> * Perez-Cruz, G <br></span> EM: <span class="em"> gperezc@pep.pemex.com<br></span> AF: <span class="af"> Pemex Exploraci▋ y Producci▋, Paseo Tabasco 1203, Villahermosa, Tab 86050 Mexico <br></span> AB: <span class="ab"> Acquisition of large 3D seismic volumes over the slope and abyssal plane of the Western and Southern Gulf of Mexico is providing deep inside, not only to its subsurface hydrocarbon potential, but also, into its present geomorphology and shallow geology. Detailed analysis of the sea floor morphology, combined with sea floor seismic attribute extraction, provides valuable information to understand present sediment dispersal patterns over the slope and abyssal plain. Geomorphologic features of the Perdido, Mexican Ridges, Deepwater Salina and Campeche Provinces include: large active canyons, scarps, massive sediment slides, sea floor folding and faulting, expulsion craters and sediment dispersal patterns, among other. These features indicate the highly active nature of the present depositional systems of the western and southern deepwater Gulf of Mexico. Based on these analogs and careful seismic amplitude extraction techniques, several sediment dispersal patterns and the concentration of sand prone facies have been proposed for Paleocene, Eocene, and Miocene sequences. Clear identification of a major deepwater fan dominated by individual and amalgamated, meandric channels that characterize the lower slope and abyssal plane of the Eocene, are clearly visible. Large linear trends of sediment transport and accumulation over the Miocene upper slope are also evident. To predict the presence of hydrocarbons related to confined and unconfined facies, AVO analysis and amplitude extraction over near and far offset volumes were obtained. Map of differences between near and far amplitudes combined with AVO allowed us to identify the most attractive areas, as well as, risk and rank the numerous hydrocarbon prospects. Superposition of sediment dispersal patterns and sand prone accumulation areas with structural maps of key horizons allows estimate potential hydrocarbon volumes, and helps to define final wells position and preferred trajectory. <br></span> DE: <span class="de"> 3000 MARINE GEOLOGY AND GEOPHYSICS<br></span> SC: <span class="sc"> Near-Surface Geophysics [NS]<br></span> MN: <span class="mn"> 2005 Joint Assembly<br></span></p></body></html>