Since 1992, Montrose, a mature waterflood field, has been rejuvenated through a multi-disciplinary full field reevaluation and the innovative, cost effective application of completion technology. Workover opportunities and areas of potentially incomplete recovery, have been identified by the full integration of all field performance, reservoir and geological data. Then workovers incorporating innovative cost effective gaslift/velocity string completions, which addressed the concerns of weak and potentially non gas-tight casing, were carried out to rejuvenate the field.

This multi-disciplinary team approach to the rejuvenation of the Montrose field, has significantly increased field wide production rates, und dramatically reduced production costs per barrel, so allowing economic production in today's low oil price environment and the fulfillment of the fields long term potential.

In addition the study has identified many techniques/lessons that can be readily applied to other similar mature field studies.

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