Analytical Simulation for the Improvement of Oil Well Productivity Using Artificial Gas Lifting Techniques (Published)
A well simulation analysis was done using integrated production modeling (IPM) software (PROSPER) to determine the productivity of two wells. The simulation includes the well properties and a detailed description of the reservoir and vertical lift performance of the wells under investigation. The process was segmented into two phases. Phase -1 comprises of simulating a well using Pressure, Volume, Temperature (PVT) data, Inflow Performance Relationship (IPR) data, and surface production data. While phase-2 includes conducting Well analyses based on the different operating conditions prevalent in the field. Each constituent of the producing Well for the study was evaluated using a well-analytical approach. The bias in this procedure is to identify potential challenges in the production mechanisms causing flow restriction which adversely limit the well from achieving its maximum producing potential flow proportion. Three operational conditions were selected for the reservoir simulation, which include; varying the tubing size, varying gas injection rate, and reduction of the tubing head pressure. The simulation and analysis of the wells (22T and 19L) indicate Well Productivity as a function of Tubing-head pressure, while the reduction in the Tubing-head pressure causes an increase in production rates. However, the variation of the tubing sizes did not show a significant increase in Wells 22T and 19L. This is potentially due to the well’s high reservoir pressure, which required no artificial lift application at this instant but certainly in the future.At the conclusion of the analysis done on the two selected producers Wells under investigation, the results show that a gas artificial lift will certainly enhance well Productivity in the selected field.
Keywords: Productivity, Simulation, artificial gas lift, gas injection rate, oil and gas production, oml 42, water-cut