Patent Inventor: L. Murray Dallas
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Hybrid wellhead system and method of use
Inventor: Dallas, et al. | Patent Number: 8118090
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Multi-lock adapters for independent screwed wellheads and methods of using same
Inventor: McGuire, et al. | Patent Number: 8100185
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Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same
Inventor: McGuire, et al. | Patent Number: 8100175
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Multi-lock adapters for independent screwed wellheads and methods of using same
Inventor: McGuire, et al. | Patent Number: 7984758
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Slip spool assembly and method of using same
Inventor: McGuire, et al. | Patent Number: 7967086
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Gate valve with replaceable inserts and method of refurbishing same
Inventor: McGuire, et al. | Patent Number: 7950410
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High-pressure plug valve
Inventor: McGuire, et al. | Patent Number: 7946558
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Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same
Inventor: McGuire, et al. | Patent Number: 7934546
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High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same
Inventor: Dallas, et al. | Patent Number: 7922216
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Hybrid wellhead system and method of use
Inventor: Dallas, et al. | Patent Number: 7905293
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Method of subsurface lubrication to facilitate well completion, re-completion and workover
Inventor: Dallas | Patent Number: 7896087
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System and method for low-pressure well completion
Inventor: McGuire, et al. | Patent Number: 7886833
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Subsurface lubricator and method of use
Inventor: Dallas | Patent Number: 7874371
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Configurable wellhead system with permanent fracturing spool and method of use
Inventor: Dallas | Patent Number: 7857062
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Slip spool assembly and method of using same
Inventor: McGuire, et al. | Patent Number: 7743856
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Hybrid wellhead system and method of use
Inventor: Dallas, et al. | Patent Number: 7721808
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Multi-lock adapters for independent screwed wellheads and methods of using same
Inventor: McGuire, et al. | Patent Number: 7708079
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Method of refurbishing a high-pressure plug valve
Inventor: McGuire, et al. | Patent Number: 7703205
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High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same
Inventor: Dallas, et al. | Patent Number: 7654585
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Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use
Inventor: McGuire, et al. | Patent Number: 7650936
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Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same
Inventor: McGuire, et al. | Patent Number: 7628201
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Wellhead and control stack pressure test plug tool
Inventor: Dallas, et al. | Patent Number: 7604050
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Subsurface lubricator and method of use
Inventor: Dallas | Patent Number: 7584798
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Method of subsurface lubrication to facilitate well completion, re-completion and workover
Inventor: Dallas | Patent Number: 7584797
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Configurable wellhead system with permanent fracturing spool and method of use
Inventor: Dallas | Patent Number: 7578351
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Subsurface lubricator and method of use
Inventor: Dallas | Patent Number: 7520334
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Wellhead and control stack pressure test plug tool
Inventor: Dallas, et al. | Patent Number: 7516786
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Gate valve with replaceable inserts and method of refurbishing same
Inventor: McGuire, et al. | Patent Number: 7506660
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High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same
Inventor: Dallas, et al. | Patent Number: 7484776
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Hybrid wellhead system and method of use
Inventor: Dallas, et al. | Patent Number: 7481269
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Gate valve with replaceable inserts
Inventor: McGuire, et al. | Patent Number: 7481239
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Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use
Inventor: McGuire, et al. | Patent Number: 7475721
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Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well
Inventor: Dallas | Patent Number: 7438126
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Multi-lock adapters for independent screwed wellheads and methods of using same
Inventor: McGuire, et al. | Patent Number: 7428931
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Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
Inventor: Dallas, et al. | Patent Number: 7422070
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Hybrid wellhead system and method of use
Inventor: McGuire, et al. | Patent Number: 7395867
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Slip spool assembly and method of using same
Inventor: McGuire, et al. | Patent Number: 7392864
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Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use
Inventor: McGuire, et al. | Patent Number: 7350562
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System and method for low-pressure well completion
Inventor: McGuire, et al. | Patent Number: 7296631
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Blast joint swivel for wellhead isolation tool and method of using same
Inventor: McGuire, et al. | Patent Number: 7278490
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Cup tool, cup tool cup and method of using the cup tool
Inventor: McGuire, et al. | Patent Number: 7278477
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Multi-lock adapters for independent screwed wellheads and methods of using same
Inventor: McGuire, et al. | Patent Number: 7267180
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Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
Inventor: Dallas, et al. | Patent Number: 7237615
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Fracturing head with replaceable inserts for improved wear resistance and method of refurbishing same
Inventor: McGuire, et al. | Patent Number: 7213641
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Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well
Inventor: Dallas | Patent Number: 7210525
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Wellhead and control stack pressure test plug tool
Inventor: Dallas, et al. | Patent Number: 7207384
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High-pressure plug valve
Inventor: McGuire, et al. | Patent Number: 7204474
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Casing-engaging well tree isolation tool and method of use
Inventor: Dallas, et al. | Patent Number: 7168495
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Hybrid wellhead system and method of use
Inventor: McGuire, et al. | Patent Number: 7159663
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Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use
Inventor: McGuire, et al. | Patent Number: 7159652
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Metal ring gasket for a threaded union
Inventor: Dallas | Patent Number: 7125055
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Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
Inventor: Dallas, et al. | Patent Number: 7066269
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Well stimulation tool and method for inserting a backpressure plug through a mandrel of the tool
Inventor: Dallas | Patent Number: 7055632
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Adapters for double-locking casing mandrel and method of using same
Inventor: McGuire, et al. | Patent Number: 7040410
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Multi-lock adapters for independent screwed wellheads and methods of using same
Inventor: McGuire, et al. | Patent Number: 7032677
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Slip spool and method of using same
Inventor: Dallas | Patent Number: 6948565
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Backpressure adapter pin and methods of use
Inventor: Dallas | Patent Number: 6938696
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Cup tool for high pressure mandrel
Inventor: Dallas | Patent Number: 6918441
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Backpressure adaptor pin and methods of use
Inventor: Dallas | Patent Number: 6918439
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Reciprocating lubricator
Inventor: Dallas | Patent Number: 6827147
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Wall stimulation tool and method of using same
Inventor: Dallas | Patent Number: 6817423
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Blowout preventer protector and method of using same
Inventor: Dallas | Patent Number: 6817421
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Well stimulation tool and method of using same
Inventor: Dallas | Patent Number: 6769489
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Spool for pressure containment used in rigless well completion, re-completion, servicing or workover
Inventor: Dallas | Patent Number: 6712147
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Slip spool and method of using same
Inventor: Dallas | Patent Number: 6695064
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Method and apparatus for inserting a tubing hanger into a live well
Inventor: Dallas | Patent Number: 6595297
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Dual string coil tubing injector assembly
Inventor: Dallas | Patent Number: 6516891
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Seal assembly for dual string coil tubing injection and method of use
Inventor: Dallas | Patent Number: 6510900
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Method and apparatus for perforating and stimulating oil wells
Inventor: Dallas | Patent Number: 6491098
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Blowout preventer protector and method of using same
Inventor: Dallas | Patent Number: 6364024
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Blowout preventer protector and setting tool
Inventor: Dallas | Patent Number: 6289993
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High pressure fluid seal for sealing against a bit guide in a wellhead and method of using
Inventor: Dallas | Patent Number: 6247537
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Method and apparatus for well workover or servicing
Inventor: Dallas | Patent Number: 6234253
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Wellhead isolation tool and method of using same
Inventor: Dallas | Patent Number: 6220363
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Lockdown mechanism for well tools requiring fixed-point packoff
Inventor: Dallas | Patent Number: 6179053
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Method and apparatus for dual string well tree isolation
Inventor: Dallas | Patent Number: 6145596
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Apparatus for increasing the flow of production stimulation fluids through a wellhead
Inventor: Dallas | Patent Number: 5927403
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Blowout preventer protector for use during high pressure oil/gas well stimulation
Inventor: Dallas | Patent Number: 5819851
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Blowout preventer protector and method of using same during oil and gas well stimulation
Inventor: Dallas | Patent Number: 5785121
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Apparatus and method for completing and recompleting wells for production
Inventor: Dallas | Patent Number: 5615739
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Apparatus and method for completing/recompleting production wells
Inventor: Dallas | Patent Number: 5540282
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Wellhead isolation tool and method of use
Inventor: Dallas, et al. | Patent Number: 5332044
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Wellhead isolation tool and setting and method of using same
Inventor: Garner, et al. | Patent Number: 4867243