This paper describes the extensive integrated engineering collaboration and optimization process to allowthe operator to push the drilling and completion envelope to drill complex ultra extended reach drilling(ERD) wells in a mature field. The Wandoo field is located within WA-14L in the Carnarvon Basin, offshoreWestern Australia and is wholly owned and operated by Vermilion Oil & Gas Australia Pty Ltd (VOGA).Due to the shallow reservoir depth, extreme ERD profile and the high tortuosity requirement for the wells,significant challenges were identified during the planning stages of the campaign. To optimize well placement, update geological information and reduce collision risk with nearbyproducing wells, the Reservoir Mapping While Drilling (RMWD) service was run in real-time. The primaryobjective of the service was to place the well in the optimum position within the reservoir, this included(1) provide early detection of moved oil water contact (MOWC) while approaching well crossings withminimum separation factor to reduce collision risk and geological uncertainties; (2) to steer azimuthallyto optimize the placement of the well with respect to the field bounding fault and reduce the drilling riskassociated with the intersection of the fau and (3) to distinguish between the A3 Upper (A3U), A3 Lower(A3L), and B sands to optimize well placement. These challenges were successfully overcome with extensive planning, integrated engineering designs,application of new state-of-the-art technology, good quality real-time data interpretation and a strongexecution support from both rig site and town. As the result of good collaborative teamwork in planning and execution, the two highly technicallychallenging wells were drilled and completed successfully and brought online for production. A number ofdrilling performance highlights captured during the execution phase were identified as having significantlycontributed to the successful completion of the project.
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