This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 200290, “Production Technology Selection for an EOR Redevelopment Project: Lessons Learned From Polymer Pilots,” by Michaela Hoy, SPE, Timur Cimitoglu, and Philipp Knauhs, SPE, OMV, et al. The paper has not been peer reviewed.

OMV operates 26 oil fields in Lower Austria. The majority were developed in the 1950s and ’60s and show an extended period of decline. The challenge of operating brownfields can be tackled by a major chemical-enhanced-oil-recovery field-redevelopment project. The scope of the polymer field rollout is to create and operate efficient horizontal polymer injection patterns in Lower Austria.

Introduction

The operator historically has executed several enhanced oil recovery trials, but during the past 10 years, polymerflooding has grown in importance in its development plans. For testing its efficacy in the Tortonian Horizons (TH) of the Matzen field, single vertical polymer patterns were created.

Because the vertical polymer patterns showed operational success and incremental-oil-production potential, horizontal flooding patterns were considered. In 2017, the first horizontal pilot pattern was drilled and completed.

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