--> ABSTRACT: AVO Application in the Geragai Deep and Betara Complex Jabung Block, South Sumatera, Indonesia, by Santoso Budihardjo and Farid Saifuddin; #90913(2000).
[First Hit]

Datapages, Inc.Print this page

ABSTRACT: Previous HitAVONext Hit application in the Geragai Deep and Betara Complex Jabung Block, South Sumatera, Indonesia

Budihardjo, Santoso, and Farid Saifuddin , Santa Fe Energy Resources Jabung Ltd, Jakarta, Indonesia

Amplitude versus Offset analysis has played an important role in the 100% drilling success rate for delineation wells at North Geragai Field and the subsequent exploration and development success at Makmur in the Geragai Deep area. In this area, a strong positive Previous HitAVONext Hit response correlates well with the presence of hydrocarbons (gas and its associated high GOR oil leg) in reservoir sands. While successfully applied in the Geragai Deep, we have been unable to fully utilize Previous HitAVONext Hit in the Betara Complex area (Northeast Betara, North Betara, and Gemah fields).

Our studies suggest that there seems to be a threshold of thickness for gas-filled reservoir sands to generate a recognizable Previous HitAVONext Hit anomaly (e.g., positive P*G attribute) to distinguish it from thinner gas or non-gas sand reservoirs. In an ideal case (no noise), synthetic modeling of well logs suggests that we should be able to detect positive an Previous HitAVONext Hit response for an individual gas sand as Previous HitthinNext Hit as 15 ft. However, due to the presence of noise in the currently available seismic data, this threshold is estimated to be in the order of 25 ft. Therefore, the presence of an Previous HitAVONext Hit anomaly is indicative of presence of relatively thick (25 ft or greater) gas-charged reservoir. Also, based on these results, absence of an Previous HitAVONext Hit anomaly does not necessarily imply absence of hydrocarbons.

AAPG Search and Discovery Article #90913©2000 AAPG International Conference and Exhibition, Bali, Indonesia