GG APPROACH TO EVALUATE SHALLOW GAS OCCURENCE IN BLOWOUT WELL AND SURROUNDING AREA, CASE STUDIES: TALANGJIMAR FIELD, SOUTH SUMATERA BASIN

摘要

The Talangjimar Field is known as a mature oilfield and has been producing hydrocarbons for the Royal Dutch Company since its discovery in 1937. Geologically, it is located on the South Sumatra Basin and is part of the Limau – Pendopo NW–SE anticlinal system. The Talangjimar Field is identified as shallow gas and as a drilling hazard and potential reservoir. Bubble gas from many areas are exposed to the surface due to a minor fault on the seismic imaging. A blowout accident on TLJ-240 (development well) probably indicated the 30 Mmscf of shallow gas kicked when drilling operations took place in March 2013. The concern of this well is based on previous wells (TLJ-157, TLJ-237 TLJ-154, and TLJ-243) that have been drilled around TLJ-240.