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AAPG Bulletin, Vol. 90 (2006), Program Abstracts (Digital)

7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006

ABSTRACT: Profiling Complex Flow in Deviated Wells- A North Sea Case Study

Parijat Mukerji1 and Pierre Baux2
1 Previous HitProductionNext Hit Domain Champion, Schlumberger, 20 Queens Den, Aberdeen, Ab15 8BW, United Kingdom, phone: 44 1224 7717346128, [email protected]
2 Geosciences, Total E&P UK PLC, Crawpeel Road, Altens, Aberdeen, United Kingdom

The keys to proactive Previous HitproductionNext Hit and reservoir management are Previous HitproductionNext Hit logs that profile fluid entries and diagnose problems in producing wells. Designing optimal Previous HitproductionNext Hit strategies and remedial operations requires high -confidence diagnosis. Previous HitProductionNext Hit Previous HitloggingNext Hit in deviated wells producing mixtures of various phases is challenging because of complex flow regimes. This is further complicated by fluid recirculation in the wellbore, causing the heavier phase to fall back towards the bottom of the wellbore, resulting in negative velocity on the low side. In this paper we present a field example that uses a new compact, integrated Previous HitproductionNext Hit-Previous HitloggingNext Hit tool that incorporates the latest technological advances and best practices to address complex Previous HitproductionNext Hit-Previous HitloggingNext Hit requirements. We also present the Previous HitloggingNext Hit results in similar wells during the same campaign that were logged with a conventional Previous HitproductionNext Hit services platform tool. We are able to demonstrate the added value in terms of comprehensive flow diagnosis. A Previous HitproductionNext Hit Previous HitloggingNext Hit operation using the new tool, which specializes in horizontal and deviated well Previous HitloggingNext Hit, was planned to obtain key inputs for the reservoir model and investigate reasons for low well productivity. The well was producing from multiple horizons, and it was critical to obtain an accurate flow profile and infer the extent of depleted layers in the field. Previous HitProductionNext Hit logs from the new tool resulted in accurate flow diagnosis and led to better understanding of complex flow mechanisms across multiple producing zones. Future steps after this Previous HitloggingTop operation include re-perforation and hydraulic fracturing of selected intervals. The tool provides a recording of holdup and velocity profiles along the vertical diameter of the borehole cross-section. The direct measurement of the velocity and fluid holdup profile enhances the capability of the analyst to determine the downhole phase.

 

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