Operational efficiency saves $7.3 maillion on eight-well sidetrack program in Gulf of Mexico

Chevron USA Production Co., operator for the Main Pass 299 and 144 fields offshore Loui siana, planned and drilled an eight-well sidetrack program, including a horizontal completion in record time and saving $7.3 million over similar historical offsets.Based on a benchmarking effort, the drilling team made changes to the bottomhole assembly and adjustable kick-off tool settings. The team also chose steerable ream-while-drilling (SRWD) systems with roller cone bits and used synthetic mud systems.The eccentric SRWD technology allowed the operator successfully to drill the oversize boreholes required and reach directional targets in record time, eliminating costly underreamer runs. The overs...

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