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The Matzen field is one of the largest producing onshore oil fields in Europe. The field consists of multiple stacked reservoirs. The total field Oil Originally in Place (OOIP) is about 190 million m3. During the last years, a comprehensive effort was undertaken to improve recovery from this field. Integrated studies were performed for the main horizons and the surface facilities. Within the long production history of the field, more and more reservoirs were found. This resulted in construction of different gathering stations in various areas of the field. Also, the flowline system was constantly modified to be able to produce the different horizons. The studies of the main horizons revealed that a substantial potential for improved recovery exists in this field. This potential was identified and risked by using assisted history matching. A number of infill drilling locations were found. In addition, potential for acceleration of production was seen. To maximise the value of the Matzen Field, the approach was taken to completely rebuild the surface facilities. The satellite facilities will be given-up and a new flowline system is currently constructed. The centralised facilities will have a modular setup to enable to increase gross production as needed to accelerate oil production. The new facility setup will reduce operating costs and allow maximising recovery from this field within the next 30 years. The first results of the new development concept showed an increase of oil production of the main horizon by 30 %. Furthermore, as part of the simulation study, technical feasibility of using the gas cap of the main field for peak Underground Gas Storage (UGS) was investigated. |
