Superposition Method Used forTreating Oilfield Interference inIranian Water-Drive Reservoir

摘要

With the increasing difficulty of discovering newIranian oil reserves, attention is necessarily focused onthe efficient development and production of existingreservoirs. One of Iranian fields (field "A") with about 28kms length and 4 kms width was explored in 1963 withdrilling well No.1. The Asmari reservoir consists of amixture of high permeability sands and carbonate sectionin elongated anticlinal structure. It confirmed the oilpotential for the Asmari reservoir. However, in field "A"before any reservoir oil production occurred in 1974, thereservoir pressure was observed to drop. Thisphenomenon has been investigated to determine if Asmaricommunication exists between “B” and “A” oil fields. In1973, field “B” Asmari oil production reached a peak ofaround 1.1 MMBPD, and the apparent field “A” Asmarireservoir pressure drop was circa 100 psi .A practical analytical method has been used in thispaper which provides the practicing reservoir engineerwith a handly method for analyzing oilfield interferenceproblems. Attempt has been made to apply this method onthese actual fields. It is concluded that aquifer of field"A" has strong communication with field "B".