Nimr Polymer Project: the Results of Multi-Well Trial in the Medium-Heavy Oil Reservoir with Strong Bottom Aquifer

• DOI: 10.2118/200238-ms
• Publication Date: 2022-03-21T00:06:52Z
• Authors: Rifaat Mjeni; Mohammed Gharbi; Sakeena Lawati; Sara-Jane Dickson; Abdul Rahman Ismaili; Mohammed Hashmi; Ibrahim Amri; Khalid Belushi; Rouhi Farajzadeh; Gerard Glasbergen; Volodimir Karpan; Adi Anand; Sander De Kruijf; Bart Lomans; Diego Wever
• Keywords: Injection well; Oil in place; Produced water

Abstract Efficient production of heavy oil from the reservoirs with strong bottom aquifer has proven to be a challenge. While providing enough energy produce field under primary depletion, in combination unfavorable oil/water mobility contrast leads rapid development water coning thereby limiting recovery. Drilling long horizontal producing wells upper part column maximizes distance and allows relatively high rates. This slows down cone increases Even further optimization production, recovery factor remains low consequently application Enhanced Oil Recovery (EOR) techniques is required increase Сrude Nimr-E medium-heavy viscosity 250-700cP reservoir conditions. The been developed mostly short inter-well distance. Due pressure maintained at initial level despite depletion. To polymer flooding was selected expectation by 5-10%. A trial conducted understand influence injection on address major uncertainties identified as key enablers for full-field project. pilot surveillance program, surface facilities subsurface configurations were specifically designed meet these objectives. paper presents data Nimr focuses performance results principal operational challenges. resulted incremental that assessed using simulations. significant clear watercut reversal due observed reached approximately 7% place. Injectivity issues encountered mitigated chemicals solve issues. prove success way commercial development.