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Rotating stinger valve for j-slot connector
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Drill pipe string conveyed retrievable plug system
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Mechanical casing annulus packer
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Casing cutter tool and method for operating the casing cutter
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Casing cutter tool and method for operating the casing cutter - pressure actuated piston sleeve actuating ball valve
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Toolstring assembly with spear tool, perforation tool, cutter tool and wash tool for releasing and removing a stuck casing
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Improved wear bushing install and retrieve system for a petroleum well, and Method therefor.
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Improved tandem releasable bridge plug system and method for setting such tandem releasable plugs
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Autonomous plug tool
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A drill pipe string borne well test tool
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Tandem releasable bridge plug system and a method for setting tandem releasable bridge plugs
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A controlled borehole wall collapsing method for sealing a ductile rock formation in a borehole
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Method for perforating, shattering annulus cement, washing annulus, and cementing the annulus, and a tool therefor
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Method for perforating, shattering annulus cement, washing annulus, and pulling casing, and a tool therefor
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Wellbore cleaning tool and method for assembling the cleaning tool
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Drill pipe string conveyed pressure integrity test tool and method for testing the pressure integrity of a casing
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Cementing method allowing initial liner top pressure integrity confirmation
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Conductor float valve
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A method of plugging along a section of double cased well
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A casing annulus cement foundation system and a method for forming a flange collar constituting a cement foundation
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