Abstract

Oil production from North Kuwait carbonate reservoirs are challenging because of factors, such as high permeability streaks, poor microscopic sweep efficiency, and low mobility ratios, all of which can dramatically impair production rates and oil recoveries. Despite tremendous efforts related to waterflood research, oil recovery in carbonates typically remains low. New technology and approaches are required to increase and sustain oil production to access and drain immense amounts of remaining oil-in-place.

This paper presents the results of collaborative work procedures applied to a selective number of wells to increase production performance in the Sabriyah Mauddud field pilot under the Kuwait Integrated Digital Field (KwIDF) project umbrella. KwIDF is part of a comprehensive strategy undertaken by an operator to enhance overall oil production by the application of digital oilfield (DOF) concepts, which involves (1) well instrumentation to provide enhanced real-time data availability, (2) upgraded power and communications infrastructure to support field instrumentation and control real-time data, (3), creating collaborative decision centers to enhance asset team processes across physically separate locations, and (4) providing a platform to increase effectiveness through automating work processes and to shorten observation-to-action cycle time.

The Sabriyah KwIDF pilot involves 44 producer and five injector wells producing about 7% of total Sabriyah field production. The main objective of this effort was to maximize and sustain oil rates and reduce well decline while honoring safe well operating envelope constraints. As a result of this effort, production gains have been certified in 10 wells of the pilot area to date. This success has been achieved by carefully analyzing past performance and adjusting well settings to real- time production conditions using the operator's digital infrastructure.

This paper describes how this optimization methodology provides improvements to short-term production rates while honoring safe well operating envelope and presents case histories illustrating the benefits from the automated workflows and collaborative decision approach. The average sustained oil gain was 395 BOPD, or 37%. The total sustained oil gain reached 3,949 BOPD (34%), with a cumulative production gain of 756 thousand barrels for the evaluation period.

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