Artificial lift

Completion Study Aims To Extend Life of Electrical Submersible Pumps

This paper describes a study aiming to provide input for the well-completion-strategy design and operational parameters for a carbonate reservoir experiencing electrical-submersible-pump failures.

Pie chart of mineralogy composition of the sample taken from the ESP.
Fig. 1—Mineralogy composition of the sample taken from the ESP.

The carbonate reservoir fields in Oman discussed in the complete paper are produced by several horizontal wells from long openhole sections. The wells are completed by barefoot (openhole) completion with electrical submersible pumps (ESPs) located in the wells’ buildup section. The field has experienced significant ESP failures, so a study aimed to provide input for well-completion-strategy design and operational parameters, which could minimize solids production and lower intervention/operating expenditure (OPEX). Based on the study results, recommendations were provided for a drawdown-management strategy, which potentially will benefit from increasing ESP run life and reducing field OPEX.

Field Background

The study reservoir is regionally important and dates from the Cretaceous era. This reservoir is characterized by a complex internal stratigraphic architecture.

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