Author: Halil Emre Celep
Publisher:
Published: 2012
Total Pages:
ISBN-13:
DOWNLOAD EBOOK →Abstract: the objective of this study is to investigate the deep bright spots observed in the Vermilion area, northern Gulf of Mexico, and assess whether they represent gas sand reservoirs. The study was carried out by Gassmann fluid substitution, seismic amplitude interpretation, and Reuss bound examinations of five study areas in the region. The Davy Jones gas discovery of the McMoRan Company at about 8700 m in South Marsh Island Block 230 (close to the Vermilion area) provided both the motivation and initial reservoir parameters for this study. Tertiary Wilcox sands are the primary reservoir targets of the study. The reservoir conditions of Davy Jones were simulated by coding Gassmann's equations and Batzle's relations in Matlab to study fluid effects and bright spot signatures. Based on reservoir response, the study areas were compared by fluid substitution analysis and seismic amplitude interpretation. Examination included reservoir response for brine and gas saturated velocities, reflection coefficients, and elastic parameters. Furthermore, Reuss bound studies of the areas were originated from brine-and gas-saturated P-wave moduli bounds of Davy Jones, and they increased the confidence of the reservoir response associated with each study area. Adjusted pore pressures, formation temperatures, and stiffness parameters were found to play a key role in characterizations of the areas. The study showed that three of the study areas (N1, N2, and N3) have probable gas bright spot responses, whereas two regions (N4 and N5) show amplitude anomalies inconsistent with gas bright spots.
Author: Nigel A. Anstey
Publisher: Springer Science & Business Media
Published: 2013-11-11
Total Pages: 641
ISBN-13: 9401539243
DOWNLOAD EBOOK →In this course we shall assume that all participants are familiar with the essentials of seismic prospecting. Thus A the rudiments of the field work -- spreads, sources, arrays B and digital recording -- are assumed known. So also are the C rudiments of processing -- such processes as gain recovery, D filtering, deconvolution, velocity analysis, and display. E Just as important, we shall assume that all participants F have some feeling for the realities of seismic work -- in the l(B) field, under real conditions. Elementary signal theory and the basic techniques of interpretation are also assumed known. However, for certainty, the following pre-course notes include sections reviewing basic signal theory, geophysical aspects of interpretation, and geological aspects of interpretation. These reviews are not intended to be comprehensive. Their function is solely to cover, with the minimum possible discussion, the essential features which will be assumed to be known in the course. None of the course time will be spent on the material of these pre-course notes. Participants are advised that they will not derive full benefit from the course if this background is not known. Most course participants will be already familiar with this material, and will need to do little more than read it through. If, before the course, any participant requires further discussion of signal theory in the same non-rigorous style, he will find it in other writings of the present author, particularly: "Wiggles", Journal of the CSEG, December 1965, pp.l3-43.
Author: Alan Judd
Publisher: Cambridge University Press
Published: 2009-06-18
Total Pages: 387
ISBN-13: 1139461605
DOWNLOAD EBOOK →Seabed fluid flow involves the flow of gases and liquids through the seabed. This book describes the features and processes of seabed fluid flow and demonstrates its importance to human activities and natural environments. It is targeted at research scientists and professionals in the marine environment.