Complex Well Bore Evaluation Using Advanced Production Logging Its Technologies And Capabilities: Integrated Brown Field Case Studies, Western Offshore, India Available to Purchase

Production logging traditionally has been used to describe the flow characteristic of a well. Over the years with the advancement of the technology, for the techno economic success, deviated and horizontal wells have been drilled. Application of highly deviated and horizontal wells for field development for primary recovery is now a worldwide practice. Diagnosing production problems in a multiphase environment is herculean task, and complex flow regimes in highly deviated and horizontal wells have made this task even more complicated. At the same time, with advancement in completion system design, it has become imperative to evaluate the effectiveness of the new completion design. Unfortunately traditional production logging techniques have not been successful in these conditions. One of the key issues in diagnosing production problems is detecting and distinguishing hydrocarbons in high water cut wells with water phase flowing as continuous medium at the low side and dispersed hydrocarbon phase at the high side of wellbore. Technologies like the digital entry fluid imaging tool and gas holdup optical sensor tool have proven to provide accurate results. For horizontal and highly deviated wells where recirculation, crossflow, and phase segregation further complicate the flow behavior, complete imaging of the wellbore is needed to characterize the wells. Brownfield wells surveillance has always been a key concern for the oil companies around the world to enhance and optimize oil production. Further, in the brownfield scenario, the complications aggravate and may require real-time decision making and intensive data analysis. Some of the typical brownfield issues are scale buildup due to immense water injection for pressure support, which is required for efficient oil displacement, complex fluid flow regime, recirculation due to insufficient lift, and casing damage resulting in unwanted formation water entry. Key observations after rigorous analysis has resulted in successful multi well operations.