Statistics – Methodology
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusm.s43a..04t&link_type=abstract
American Geophysical Union, Spring Meeting 2005, abstract #S43A-04
Statistics
Methodology
1800 Hydrology, 5102 Acoustic Properties, 5114 Permeability And Porosity, 7205 Continental Crust (1242), 8105 Continental Margins And Sedimentary Basins
Scientific paper
Today's exploitation of hydrocarbons in the Deepwater Gulf of Mexico requires a subtle, sophisticated class of opportunities for which uncertainties must be quantified to reduce risk. The explorer is often faced with non-amplitude supported hydrocarbon accumulations, limitations of seismic imaging, and uncertainty in stratigraphy and hydrocarbon kitchens, all in an environment of still-maturing technology and rising drilling costs. However, many of the fundamental Exploration processes that drove the industry in the past in the Gulf of Mexico still apply today. Integration of these historically proven processes with each other and with new technologies, supported by a growing body of knowledge, has provided a significant new methodology for wildcat and near-field Exploration. Even in mature fields, additional opportunities are seldom characterized by unambiguous attributes of direct hydrocarbon indicators or amplitude support. Shell's Quantitative Integrated Evaluation process relies upon visualization of integrated volume-based stratigraphic models of rock and fluid properties, and by relating these properties to measured and predicted seismic responses. An attribute referred to as the Differential Generalized Attribute, which summarizes the differences between multiple scenario response predictions and actual measured data, can then be used to distinguish likely scenarios from unlikely scenarios. This methodology allows competing scenarios to be rapidly tested against the data, and is built upon proprietary knowledge of the physical processes and relationships that likely drive vertical and lateral variation in these models. We will demonstrate the methodology by showing a portion of the Mars Basin and describing the integrated capability that is emplaced at the Exploration phase, and matured throughout the Appraisal, Development and Production life cycle of a basin discovery.
Detomo R.
Tichelaar B. W.
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