The present article introduces the recent work done in Shoab Ali field governed by Gupco in GOS to study the impact of the production reallocation from different seven reservoirs. It was recognized that some reallocation of production should be required to match the reinterpretation of individual reservoir tops, analysis of the total 44 PLT and TDT logs available in the field. In addition, production reallocation took place in the light of production performance, pressure history, available PVT and core reports. Shoab Ali field production reallocation was a cornerstone for overall production allocation with offset fields; so metering and piping system, connecting it with other fields was also monitored.Shoab Ali field has experienced significantly more faulting than most fields in the Gulf, resulting in a unique structural style. In addition, many stratigraphic units thin to the south, giving rise to uncertainty in stratigraphic correlation. Due to faulting and local uplift associated with initial rifting during early Miocene times, there is significant variation in the distribution and thickness of pre- and earliest Miocene units. This is a function of crosscutting unconformities and fault-controlled deposition. All of these factors combine to provide a challenging problem for the interpretation.

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