APPLICATION OF DECLINE CURVE ANALYSIS IN PREDICTING THE LIFE SPAN OF A WELL IN NIGER DELTA RESERVOIR

Decline curve analysis is aimed at predicting well production behaviour at different points in time based on the well past production history. There are three types of decline curve analysis, which are extensively discussed in this paper. This paper focused on determining or extrapolating future production rate of a well using Tega – 3A well as a case study. The well was put on stream in 1970 and produced on J4.0 and J5.0 in 1970. J5.0 was produced to depletion in 1980. It was squeezed off and  the well was re-entered in that same year and re-completed on J3.6 and J4.0. The data for this paper were accumulated from J3.6, it had an initial production rate of 1000bbl/day. Its production rate when the data used for this paper was collected was 100bbl/day in the year 2001. J3.6 has since been squeezed off in 2007. This paper will show how decline curve analysis will predict exactly the life span of J3.6, for 27 years that is from 1980 to 2007