October Field, discovered in the northern part of the Gulf of Suez (GOS) in May 1977, is one of the greatest Egyptian oil fields. The cumulative oil production prior commencing water flooding was about 31.5% of 2.12 billion barrels of orginal oil in place. In order to maintain the reservoir pressure, a waterflooding project started 1995 in Nukhul formation as a pilot project, then in 1996 the water flood started in the main reservoir of this field-Nubia, and Nezzazat formations. Due to the facts that water flooding plant was installed onshore at July area to support July field by water injection with limited net of pipelines and the continuous growth of water volumes needed to be injected into October field, the water injection reates suffered from shortage, which intern all the time introduces new challenges for the operation division to come over. The present study analyzes the origin of problems and the handing og them either by surface means or subsurface interference. Some innovative techniques were taken place in Octoberfield such as pilot water flood project, water supply wells, vertical water transfer well and changes in the pattern of surface pipelines concerning the passing through fluids. Later on, was encountered a need to support another reservoir of October field-Nezzazat, which is characterized by low susceptibility. This new challenge is also discussed in this paper.

The overall evaluation of October field water flood development is quite positive having ever growing success in confronting the challenges that especially encountered in case of offshore production. Total target recovery after water flooding is expected to reach 54.5%.

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