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Horizontal infill well with AICDs improves production in a mature field — a case studyGreen Open Access

Authors: Ilhami Giden, Michael Nirti and Thomas Maier
Journal name: First Break
Issue: Vol 37, No 10, October 2019 pp. 85 - 91
DOI: 10.3997/1365-2397.2019025
Language: English
Info: Article, PDF ( 1.76Mb )

Matzen is a super-mature oilfield operated by OMV Austria E&P GmbH and is located approximately 25 km northeast of Vienna, Austria. It is one of the largest onshore oilfields in Europe and consists of several stacked reservoirs. The 16th Tortonian horizon (16.TH) is the biggest reservoir in this field. The Bockfliess area is the westernmost part and covers approximately 3.7 x 3.6 km. Seventy seven wells are currently active, of which 62 are production and 15 are injection wells (Figure 1). The 16.TH sandstone reservoir is located between -1490 and -1455 m TVDss with excellent permeabilities of up to several Darcies and an average porosity of 27%. Reservoir temperature is 60°C and current reservoir pressure is 120 bar. Oil gravity is 25°API and the oil viscosity is 5cP. The average water cut exceeds 97%, which is a result of 70 years of production.

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