Reservoir Performance Forecasting in Term of Recoverable and Production Life Time in Y Field

Florentino Soares; Octavio António Pinto da Silva

Florentino Soares Shool of Petroleum Studies, Department of Petroleum Engineering, Dili Institute of Technology, Dili, Timor-Leste
Octavio António Pinto da Silva Shool of Petroleum Studies, Department of Petroleum Engineering, Dili Institute of Technology, Dili, Timor-Leste

Keywords: Recovery factor, Production life time , ESP’pump constraint method, IPR, water problem

Abstract

Recovery factor is more essential tasks for reservoir engineering to determine the withdrawal rate carried out from the geological subsurface in order to maximize the recoverable as much as possible, because the aims of any oil and gas company is to gain a profit (Onuka & Okoro, 2019). The recovery factor in Y field acquired 1.5% by Natural Flowing, its quite lower recoverable due to pressure depleted in undersaturated conditions. Therefore, the wells equiped Electrical Submersible Pump to improving the oil rate hence to maximize the recoverable. In this study, predicted the reservoir performance to acquire more understanding on production behavior in Y field in term of maximize the recovery factor and determine the production life time in the future. This work presented the the recovery factor are obtained from the tank as big 8.14% by using the pumping system which working at normal speed (60 hz). However, the pressure are declining to 3156.25 psia along with the wells produced at 520.71 stb/d in 2050, the production will be continually yielding because no intersection between the production rate and the limitations rate which 247.45 stb/d (Fig 6), in term of technically evaluation. There is ESP’pump constraint method using to find out the production limitations wich demostrated by Kermiz and Brown statement that production in pumping system should not produced lower than 40% of Absolotu Open Flow Potential in order to prevent the pump thrust. This approach is applicable to demostrate the production limitations using lifting system which means not seem in ecomical limit.

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