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| Halliburton's Subsurface Control Valve for active hurricane season Halliburton's Subsurface Control Valve III (SSC III) is the only subsurface safety valve in the industry that will allow up to a million pounds of drill string to hang off it, thus providing operators with the safe, efficient, and cost-effective means to secure the rig and evacuate personnel when the threat of a hurricane arises. Securing the rig can involve having to undo days of work because the downhole string weight has to be reduced, which involves tripping drill pipe and wasting precious rig time. In deepwater where rig spread rates can average more than $800,000 per day, the cost to secure a well when pulling the string can quickly reach nearly $1 million (USD). Additionally, the high level of activity driven by the rush to get personnel to safety can create hazards. The SSC III valve allows operators to secure the string downhole with its million-pound hang-off capacity, thereby providing more efficient abandonment of the drilling rig. Also, because the string is left in place, minimal effort is required to get back on line after the storm passes. Operators are able to resume work more efficiently. Halliburton's subsurface control valves successfully controlled more than three-quarters of the wells being drilled in the Gulf of Mexico during the 2005 Katrina and Rita hurricanes. write your comments about the article :: © 2007 Construction News :: home page |