Field development with three dimensional seismic methods in the Gulf of Thailand ? A case history

Abstract

The Gulf of Thailand is a Tertiary basin and is of tectonic origin. The section of interest is Miocene and possibly Oligocene in age, and although the principal interest is limited to the upper 12800 meters of section (about 2 seconds in reflection time), there is perhaps as much as 24000 meters (3 seconds) of Tertiary and Mesozoic section overlying a strong reflector which in places tops the basbment and in other places may represent the top of the Paleozoic. The Miocene section of interest for hydrocarbon exploration, in all the wells drilled up to the present time, consists primarily of a shale section interbedded with relatively thin sand beds. The sand beds appear to be lenticular, and the development of the sand buildups are probably controlled by faulting and local structural highs.