Drilling Converts Seam Gas to Liquefied Natural Gas | Schlumberger
Tech Report
Australia, Oceania

In the world’s first project to convert coal seam gas into liquefied natural gas, nine rigs drilled a total of 1,000 wells. Wells producing up to 9,000 bbl/d caused water-related environmental issues. Short operation cycles and frequent rig moves, along with private land drilling, presented challenges. To resolve this, the operator developed a structured, flexible logistics setup and devised HSE campaigns to develop crew competency. Rig-moving was streamlined and equipment resized to establish a lean approach.

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Factory Drilling Converts Coal Seam Gas to Liquified Natural Gas

Integrated well construction efforts maximize profits for customer

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Figure shows the evolution of the drilling and completion times throughout the project. Drilling time dropped from 7 days to an average of 3.2 days. Completion time fell from 6 days to 2 days. A lean approach helped save more than USD 15 million. The process took only 9.2 days from wellbore cleanout trip until pull out of hole (POOH).
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