eprintid: 7074
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/70/74
datestamp: 2023-11-09 16:18:52
lastmod: 2023-11-09 16:18:52
status_changed: 2023-11-09 16:08:24
type: article
metadata_visibility: show
creators_name: Ahmed Satti, I.
creators_name: Wan Yusoff, W.I.
creators_name: Ghosh, D.
title: Overpressure in the Malay Basin and prediction methods
ispublished: pub
keywords: overpressure; prediction; prestack migration; seismic velocity, Malay Basin; Pacific Ocean; South China Sea
note: cited By 8
abstract: Predrill overpressure prediction is important for well planning and migration modeling for prospect evaluation. The Eaton (Journal of Petroleum Technology, 24, 1972, 929) and Bowers (SPE Drilling & Completion, 10, 1995, 89) methods are used worldwide for postdrill overpressure prediction using sonic log and predrill overpressure prediction using seismic interval velocity. In this research, these two methods were used for overpressure prediction using 3D anisotropic prestack depth-migrated seismic interval velocity in a field of the Malay Basin. In the shallow overpressured zone, where the mechanism of overpressure is undercompaction, the onset of overpressure was predicted reasonably well using the Eaton and Bowers methods with their standard parameters (i.e., Eaton exponent 3 and Bowers loading curve) for seismic velocity. However, in the deep overpressured zone, where fluid expansion is the cause of overpressure generation, these methods underpredicted the high overpressure. In the deep overpressured zone, the overpressures were better predicted by applying a correction to the Eaton method. On the other hand, the Bowers unloading parameters for the fluid expansion mechanisms did not show any significant effect on overpressure prediction. Hence, in the study area, the Bowers method is not effective for 3D overpressure prediction using seismic velocity, whereas the Eaton method is more robust and can be used for 3D overpressure prediction from seismic velocity. © 2015 John Wiley & Sons Ltd.
date: 2016
publisher: Blackwell Publishing Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938703034&doi=10.1111%2fgfl.12149&partnerID=40&md5=d0e805994eeae328a42cb119850baae7
id_number: 10.1111/gfl.12149
full_text_status: none
publication: Geofluids
volume: 16
number: 2
pagerange: 301-313
refereed: TRUE
issn: 14688115
citation:   Ahmed Satti, I. and Wan Yusoff, W.I. and Ghosh, D.  (2016) Overpressure in the Malay Basin and prediction methods.  Geofluids, 16 (2).  pp. 301-313.  ISSN 14688115