René O. Thomsen1,
(1) Texas A&M University, College Station, TX
Abstract: The Role of Well Pix in Correlating Well Logs and Constructing a 3D Sequence Stratigraphic Framework of the South Marsh Island Area, Gulf of Mexico
Construction of a 3D sequence stratigraphic framework model adds valuable information to the evaluation of the quality of potential hydrocarbon bearing reservoirs. Analysis of rock facies distribution, facies relationships, interpretation of stratal geometry, as well as the analysis of petrophysical parameters, such as porosity and permeability, is routinely done using a variety of well log interpretation methods. In producing fields, wells frequently cover the entire area of interest; and with an increasing number of wells and well logs it becomes increasingly cumbersome to perform these tasks without using analytical, computational, and visualization software. In this work we use WellPix, a correlation tool utilizing variable area coloring, to demonstrate how such a visual aid helps to enhance the graphic representation of stacking patterns. The software is applied to the South Marsh Island, Gulf of Mexico area; and specific recognizable patterns are discussed in relation to depositional facies, sea-level fluctuations, and systems tracts through the integration of seismic and biostratigraphic data. The result is a coherent 3D sequence stratigraphic framework model with a visual overlay displaying the distribution of reservoir facies and related sealing formations.
AAPG Search and Discovery Article #90914©2000 AAPG Annual Convention, New Orleans, Louisiana