AGR was engaged to manage a mature onshore oil field in Spain. The field was originally developed with 50 wells but 80% had subsequently been abandoned due to low pressure and high water cuts. AGR studied the field production history and well logs to identify potential ‘missed-pay’ zones, based on which a work-over and perforation campaign was proposed.
- The reservoir is characterised by poorly connected fluvial sands
- Some pressure maintenance pilots had been attempted but were not well documented
- No coherent reservoir model existed.
Significant missed-pay targets were identified by our Reservoir Management team. The subsequent work-over and perforation campaign led to a doubling of oil production. The production increase has been maintained and a second round of work-over and perforations is planned following the successful first phase. A managed pressure maintenance pilot has also been initiated.