Production Forecast Using Decline Type Curve (Case Study for Reservoir X, Field Y)

Teodoro Marcos Mota; Margarida  Otávia dos Reis Alves

Teodoro Marcos Mota School of Petroleum Studies, Dili Institute of Technology, Timor-Leste
Margarida Otávia dos Reis Alves School of Petroleum Studies, Dili Institute of Technology, Timor-Leste

Keywords: Decline curve analysis, remaining oil reserve, cumulative production and production lifetime.

Abstract

Decline curve analysis (DCA) is the most common method applied practice in the evaluation of reservoir parameters and to forecast future production of oil and gas, also to estimate ultimate recovery and reserves. Predicting the production rates from a given well is the most considerable interest in the oil and gas industry. The objective of this work presents the use of decline curve analysis to obtain the type of decline, remaining oil reserve and oil productivity in reservoir X field Y. Production data is the only available information which used in DCA, by plotting rate of production versus time for a given well, an extrapolation can be made to provide an estimate of the future rates of production for that well. Result shows the types of decline for these wells are exponential decline curves and the total EUR for reservoir X from well A, well B and well C started producing until July 2016 was 24,835,856.82 with RF 29%. While the total amount of oil reserves that can be taking is 82,316.82 STB for 17 months from January 2015 to July 2016.

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