Shallow Pays in Sirikit Main Oilfield, Phitsanulok Basin, Onshore Thailand: Their Habitat and Identification on 3D Seismic Data

Shallow hydrocarbon pays were occasionally encountered above Main Seal, the top seal for Lan Krabu K reservoirs, uppermost<br>main reservoir in the Sirikit Main Field. Shallow hydrocarbon is trapped in the Lower Yom and PTO Formations<br>sandstone reservoirs which in the past were rarely considered to be drilling target in the field. Some accumulations were<br>discovered unintentionally while drilling into the deeper Lan Krabu reservoirs. In the recent years, more effort is directed to<br>the shallow pays as they often give considerable production contribution.