About This Item
Share This Item
Abstract
|
Chapter from: SG
42: Applications of 3-D Seismic Data to Exploration and Production
Edited by:
Paul Weimer and Thomas L. David Authors:
Kathleen O. Horkowitz and David R. Davis
Published 1996 as
part of Studies in Geology 42
Copyright © 1996 The American Association of Petroleum
Geologists. All Rights Reserved.
|
 |
|---|
*Editorial Note: Page numbers in this digital version
(HTML and PDF) do not correspond to those of the hardcopy.
Otherwise, the two are the same.
|
|---|
|
CHAPTER
4
Chapter 4: Seismic
Delineation of Thin Sandstone Reservoirs in a Shale-Rich Sequence Using
 Instantaneous Frequency and Reflection Amplitude Attributes from 3-D Data,
Texas Gulf Coast Kathleen O. Horkowitz* and David R.
Davis** |
|
Horkowitz, K.
O., and D. R. Davis, Seismic delineation of thin sandstone reservoirs in
a shale-rich sequence using instantaneous frequency and reflection amplitude
attributes from 3-D data, Texas Gulf Coast, in P. Weimer and T. L. Davis,
eds., AAPG Studies in Geology No. 42 and SEG Geophysical Developments Series
No. 5, AAPG/SEG, Tulsa, p. 35-44. |
|---|
|
|---|
|
|---|
|
ABSTRACT
A combination of seismic
trace attributes including instantaneous frequency and reflection amplitude
was successfully used to seismically delineate gas-prone reservoir facies
consisting of thin, discontinuous sandstone reservoirs in a shale-rich
stratigraphic sequence. This type of reservoir section poses special problems
for seismic interpretation due to a high degree of lateral and vertical
variation in the ratio of net sandstone to gross interval thickness. Individual
sandstone reservoirs are also below the limit of seismic bed resolution,
further complicating the evaluation.
Instantaneous frequency maps
were used directly to map the areal distribution of reservoir-prone intervals.
The addition of calibrated average amplitude maps provided the ability
to discriminate between homogenous shale-rich sections and relatively homogenous
sandstone-rich sections characterized by amalgamated siltstones and sandstones.
The lithofacies prediction model developed using this integrated geological,
petrophysical, and seismic interpretation technique was confirmed by the
results of two new wells which penetrated the target interval described
in this study. Instantaneous frequency maps with overlays of amplitude
and time structure contours successfully identified stratigraphic intervals
favorable for gas accumulation and trapping.
|
|---|
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
| Watermarked PDF Document: $14 |
Watermarked Document – A Watermarked Document is branded with the name of the original licensed customer to discourage unauthorized users from sharing the document outside the user's organization. The PDF is no longer restricted to one machine, but can be circulated to others in the same company or department. A Watermarked Document also can be printed for hard copy distribution internally but is not authorized for outside distribution nor posting on the internet. Users will not be able to cut-and-paste text or images from one document to another.
|
| Open PDF Document: $24 |
Open Document – An Open Document is a fully functional PDF that can be circulated (a digital copy or hard-copy printed documents) outside the purchasing organization. Purchase of an Open Document does NOT constitute license for republication in any form, nor does it allow web posting without prior written permission from AAPG/Datapages ([email protected]).
|
GIS Map Publishing Program
