ONGC drilling high angle offshore wells through shale

India's Oil & Natural Gas Corp. Ltd. used a different approach to improve extended reach drilling through shales at its offshore Mumbai (Bombay) High oilfield.In a field on the south side of the Mumbai High area, two long well sections, 1,008 m (3,307 ft) and 1,429 m (4,685 ft), were drilled through shale in 35.5 and 43.5 hr, respectively. The ONGC project team (subsurface group of Mumbai High Asset and Drilling Services) was able to drill the section fast and case it affordably, saving drilling time and producing quality wellbores.Improving drilling performance required an initial investment and effort to bring together the necessary technologies, equipment, and expertise. Using stre...

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