Decline Curve Analysis for Sudanese Oilfield

Abstract

Oil and gas is the key word for industrial revolutionary occur worldwide, as in past and present the necessity of close monitoring for the oil and gas supply production. Decline curve analysis (DCA) is a graphical representation used for analyzing declining production rates and predicting the future production performance of oil and gas wells. The production rates declines as a function of time; reservoir pressure drawdown, the change of the produced fluids volumes, are usually the cause. Fitting a line through the performance history and assuming this same trend will continue in future forms the basis of Decline curve analysis concept. In this research block (17) of South Al-Najma oil field which located in western Sudan, it’s with a total current productivity of (3, 6 8 0 bbl./day), the data collected from the area has been used as an applicable for decline curve analysis study The study conducts a decline curve analysis procedure, which have a variety of supporting tools, the most common type of these tools are oilfield manager (OFMSoftware) and Micro-Soft Excel sheet (MS-Excel). A comparison study between Micro-soft Excel sheet and OFM-Software results has been done. A Comparison study the result show identical feature from the two procedures.