--> Integration Approach in Field Development Plan to sustain the Production and Identify Opportunities in Brown Field

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Integration Approach in Field Development Plan to sustain the Production and Identify Opportunities in Brown Field


Working in a brown field could be challenging to the subsurface team especially when the field is already in production for 15 years. A strategic field development plan is needed in sustaining and delivering the production demand. This is the avenue for every Reservoir Geoscientist, Petrophysicist, Reservoir Engineer, Production Technologist and Well Intervention Engineer to be together and brainstorming ideas for new opportunities to achieve the business target. In the case of JASPER field, the sandstone reservoir dissected by series of fault blocks are currently facing shortfall by 30-50MMscf/d after 15 years of active production. This is due to several wells were shut-in because of high water production. Although the team have managed to revive few shut in wells through well intervention, the production from these wells were not able to fill up the shortfall. As a result, the shortfall will lead to penalty payment to the company since the production cannot meet the gas nomination. Therefore, to address the current issue, the technical team had conducted Integrated Review of Field Management and Performance (IRFMP) workshop to look for opportunities to sustain the gas demand. Major takeaway from the workshop is to conduct infill drilling of two wells. The project is expected to realize 50Bscf with initial production from each wells to be about 25-30MMscf/d. The locations for the infill drilling was based on the integration work from all disciplines in the subsurface team. Dynamic model was simulated to look for remaining gas in the field. The team had performed intervention job by running Reservoir Saturation Tool (RST) to check on the current water movement behind casing. The newly acquired 2016 Seismic was used for seismic attributes comparison with the vintage 1995 Seismic to image the changes in amplitude of the reservoir layers from both seismic. Qualitative analysis (QI) was done to capture the possibility of finding hydrocarbon in the field. Plus the use of Non-Stationary Differential Resolution (NSDR) to improve the seismic resolution to detect the continuity of thin bed layers. With all these data, the team managed to mature the locations for the infill wells with high confidence level. To summarize, avoiding shortfall and penalty payment requires a strategic field development plan to sustain and deliver the production demand. To identify locations for the infill drilling in a brown field requires integration work from all disciplines to thrive and achieve company’s business target.