Abstract:
The petroleum engineers are concerned to find a solution for maximizing production rates and deceasing costs through optimum design of artificial lift particularly electrical submersible pump (ESP) techniques. In this time, we approach to raise the productivity by decreasing the pressure at the bottom of the well by using one of the artificial lift methods. The selection of the most suitable type of artificial lift required is influenced by several factors, such as producing characteristic (water cut, gas–liquid ratio, liquid production rate, inflow performance), fluid properties (viscosity, formation volume factor), hole characteristic (depth, size of tubular, completion type, deviation), surface facilities, location, available power sources, operation problem, service availability and relative economics. This study has been conducted on two well are namely Well L-075-65 at Sarir oilfield in Sirte Basin of Arabian Gulf Oil Company (AGOCO) and N-55 at Nafora oilfield in Oasis area in the south. The main goal of the study is to achieve production optimization of electrical submersible pump by using software program of Visual Basic (VB). Desired conclusion will be reached after determining the optimum pump stages and horsepower requirement for a possible production rate by the hand calculations that compared with software results. The study will let us to suggest optimum submersible pump running conditions for the wells to continue production in a more economical and enhanced oil production approach. The obtained results revealed that the software program can be used successfully in ESP design, this is due to the similarity between its results and the calculation ones, as well as the actual results in the oilfield.
