Association Need Help? 850-547-0102 - Ronnie 19 MAY 2024 WorldWide Drilling Resource® One Major HDD Crossing Done, Two More Ahead Adapted from Information by NRL Numaligarh Refinery Limited (NRL) is executing the mega project of laying its Paradip Numaligarh Crude Oil Pipeline (PNCPL), a cross-country pipeline of over a thousand miles, from Paradip Port in Odisha to Numaligarh, along with expansion of its refinery, as part of the Numaligarh Refinery Expansion Project (NREP). The prestigious NREP is the single largest investment in Northeast India as part of the government of India's Hydrocarbon Vision 2030. The pipeline passes through five states traversing numerous crossings, including all major rivers of East India - namely Ganga, Jia Bharali, Subansiri, and Brahmaputra - utilizing horizontal directional drilling (HDD) with each intersection. Subansiri River, which connects Lakhimpur in the north and Majuli in the south, was one of the challenging HDD sites due to its complex, over two-mile-long profile length for a 26-inch-diameter pipe. The remote site made it more challenging due to the inaccessibility of the area which remains flooded most of the year, leaving a working window of 4 to 5 months during November to March. The contractor had to construct a temporary bridge over Lohit River for movement of the heavy equipment and project accessories. Two giant rigs were positioned on both sides of the river and were used for drilling, reaming, and pulling activities. Once pulling of the pipe started, it and continued nonstop for around 60 hours until the entire pipe string was pulled through, marking the successful completion of one of the largest HDD projects globally for a 26-inch pipe size. With completion of this HDD, NRL is now focusing on accomplishing another two large HDD projects this year in Ganga and Brahmaputra River, to conclude all major HDD crossings of the PNCPL. Plans are to complete construction and commissioning of the PNCPL by mid-2025. DIR
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