TY  - JOUR
EP  - 313
PB  - Blackwell Publishing Ltd
SN  - 14688115
TI  - Overpressure in the Malay Basin and prediction methods
SP  - 301
N1  - cited By 8
AV  - none
VL  - 16
A1  - Ahmed Satti, I.
A1  - Wan Yusoff, W.I.
A1  - Ghosh, D.
JF  - Geofluids
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938703034&doi=10.1111%2fgfl.12149&partnerID=40&md5=d0e805994eeae328a42cb119850baae7
Y1  - 2016///
ID  - scholars7074
KW  - overpressure; prediction; prestack migration; seismic velocity
KW  -  Malay Basin; Pacific Ocean; South China Sea
N2  - 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.
IS  - 2
ER  -