Microhole R&D

Microhole technology involves adapting conventional coiled tubing to ultrasmall-diameter boreholes, in the range of 3-4-in. diameter and smaller than a commercially defined “slimhole.”Los Alamos National Laboratory (LANL) conducted a feasibility study that examined the possibilities of microhole development in terms of existing and needed technologies.Microhole INETL’s Strategic Center for Natural Gas and Oil has awarded development funding for systems to operate in 31⁄2-in. boreholes to 5,000 ft in two rounds. Six companies received $3.74 million in funding in the first solicitation round, announced in 2004 (www.pttc.org/alerts/NETL04.pdf): Baker Hughes Oilfield ...

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