Optimizing Injection Wells through Innovative Completion

Abstract This paper covers the first global application of Influx Control Device (ICD) in an injector well for carbonate formation. This inventive completion coupled with a wellbore simulation will optimize the injection profile into heterogeneous formation zones hence enabling reservoir management strategy to be achieved. Carbonate formations are typically known for their heterogeneity and complex pore system which have an impact on the fluid movement pathway. Conventional injection wells face the challenge of achieving even distribution of the injected water along the wellbore. Heel to toe effect, significant permeability contrast and existence of thief fractures is among the factors that complicate the effort to achieve a good reservoir management. Inflow control devices have a long history of application in production wells both in sand stone and carbonate formations. It has proven to be very effective in achieving a balanced inflow profile along the horizontal section, delaying water and gas production breakthrough. The Influx Control Device is equally able to function in an injection well and with the usage of wellbore simulation, is able to cater for the complexities of the carbonate formations. The installation was carried out in a horizontal water injector well in a major oil field, offshore Abu Dhabi. This paper presents the design of the completion, its installation and the initial water injection results based on production logs. The positive result from the installation has shown the applicability of such completion technology and offers solutions in our effort to optimize reservoir performance particularly in carbonate formations.