About This Item
- Full text of this item is not available.
- Abstract PDFAbstract PDF(no subscription required)
Share This Item
The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
Volume:
Issue:
First Page:
Last Page:
Title:
Author(s):
Abstract:
A fast, new technique has been implemented to encourage effective, realistic appraisals of hydrocarbon prospects at an early stage in the exploration of an area. A FORTRAN program using a modest amount of memory uses wavelet-processed, inverted seismic data control and existing petrophysical information to predict the dollar value of in-place reserves at potential drilling locations.
The data base is composed of the following input: (1) an estimate of the volume of closure of the anomaly, determined from conventional seismic structure mapping; (2) spatial distribution of transit times at the level of interest, which contribute to calculation of effective porosity in a volumetric sense; and (3) well-logging parameters such as water saturation, true resistivity, water resistivity, shale fractions, and other coefficients that characterize the properties of the rock system. Also, an interpreter may superimpose a geologic model by smoothing and interpolating such data appropriately.
Recovery of reliable low-frequency velocity information from inversion is critical. Acoustic and electric data are crossplotted to determine, in a statistical sense, how plausible it is that the rock-fluid system being described is the anticipated target zone.
Fast reservoir calculations in the Western Canada and Williston basins have produced reasonable bids for Crown land sales.
End_of_Article - Last_Page 483------------