Land based dynamic sea motion simulating test drilling rig and method
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United States of America Patent
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Jan 2, 2018
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app pub date -
Oct 26, 2015
filing date -
Oct 24, 2014
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Abstract
A land based dynamic sea motion simulating test drilling rig has a soil bound foundation and a pivot structure secured to said foundation. A motion base is mounted on said pivot structure and pivotable about at least one horizontal pivot axis. A drilling tower is erected on said motion base and is provided with a hoisting device adapted to manipulate a drill string section in a vertical firing line. A drilling tubulars storage vertically stores drilling tubulars and a tubulars racker device moves drilling tubulars between the drilling tubulars storage device and the firing line allowing for assembly and disassembly of a drill string section in the firing line. A motion drive is provided which is adapted to impart cyclic pivoting motion about said at least one horizontal pivot axis to the assembly of the drilling tower, drilling tubulars storage, and tubulars racker device in order to simulate said assembly being subjected to a sea state induced motion.
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