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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7926560 | Solid rubber packer for a rotating control device A seal assembly for use with a rotating control head is provided. The seal assembly includes a rotatable member and a cavity formed between the rotatable member and a tubular radially inwardly disposed from the rotatable member. The cavity having a first surface and... | 04/19/2011 |
| 7779903 | Solid rubber packer for a rotating control device A seal assembly for use with a rotating control head is provided. The seal assembly includes a rotatable member and a cavity formed between the rotatable member and a tubular radially inwardly disposed from the rotatable member. The cavity having a first surface and... | 08/24/2010 |
| 7669650 | Stuffing box for rotating rod A stuffing box for a rotating rod includes a stationary housing and a tubular rotating inner housing. The stationary outer housing has an upper end, a lower end, an exterior surface and an inner surface defining an interior cavity. The inner housing is positioned wi... | 03/02/2010 |
| 7413023 | Wellhead seal unit A wellhead seal unit for sealing a subsea oil and/or gas well at the wellhead. The unit comprises a sleeve, sealingly engaged to the workstring and to which, blow out preventer rams can engage. The unit allows the workstring to be rotated and reciprocated within the... | 08/19/2008 |
| 7380590 | Rotating pressure control head A Rotating Pressure Control Head (RPCH) with a rapid engagement mechanism is disclosed. The RPCH comprises an upper body and a lower body. The rapid engagement mechanism allows the upper body to be quickly disengaged from the lower body and replaced with a new upper... | 06/03/2008 |
| 7354046 | Sealing apparatus having sequentially engageable seals Advantageous seal systems are provided that include a barrier member movable relative to a shaft to allow sequential engagement of resilient seal members, e.g., lip seals, with the shaft. Movement of the barrier member may be effected manually or through introductio... | 04/08/2008 |
| 7343969 | Secondary packing arrangement for reciprocating pump polished rod A secondary packing arrangement is provided for use with a well having a reciprocating pump and polished rod, and in combination with a stuffing box, the stuffing box being modified. Packing seals, a barrier fluid and a pressure transmitter cooperate with modified s... | 03/18/2008 |
| 7175176 | Device for feeding suction air or blowing air in a sheet-processing machine A device for feeding suction air or blowing air to a sheet-retaining device displaceable relative to a machine element in a sheet-processing machine, includes a first air-feeding element connectible in terms of flow to a suction-air or blowing-air source. A second a... | 02/13/2007 |
| 7165610 | Removable seal A removable seal 10 is provided for positioning in a bore 14 around an element which, in use, passes therethrough. The seal comprises: a cylindrical outer sleeve 13 having an axial bore, the sleeve 13 having at least one engagement portio... | 01/23/2007 |
| 7156039 | Keel guide system A technique for guiding a riser in an offshore environment. The technique utilizes a keel guide that permits the passage of connectors or other components therethrough. A bushing is mounted within the keel guide to guide the relative linear motion of the riser assem... | 01/02/2007 |
| 7114385 | Apparatus and method for drawing fluid into a downhole tool An apparatus and method for drawing fluid from a subterranean formation into a downhole tool positioned in a wellbore penetrating the formation is provided. A probe body is extended from the downhole tool for engagement with the wellbore wall. The probe body has at ... | 10/03/2006 |
| 7108058 | Packing assembly for rotary drilling swivels and pumps having rotating shafts A packing assembly for use with a rotary drilling swivel having a cylindrical wash pipe comprising a housing assembly including a packing gland forming a sealing assembly chamber around the wash pipe, the packing gland including an injection port in open communicati... | 09/19/2006 |
| 7080685 | High pressure rotating drilling head assembly with hydraulically removable packer The present invention generally provides a reduced downtime maintenance apparatus and method for replacing and/or repairing a subassembly in sealing equipment for oil field use. The invention allows the removal of rotating portions of a rotary drilling head without ... | 07/25/2006 |
| 7044217 | Stuffing box for progressing cavity pump drive Progressive cavity (PC) pump drive heads require a stuffing box to seal crude oil from leaking onto the ground where the polish rod passes from the crude oil passage in the wellhead to the drive head. Because crude oil typically contains fine sand particles, alignme... | 05/16/2006 |
| 7040394 | Active/passive seal rotating control head The present invention generally relates to an apparatus and method for sealing a tubular string. In one aspect, a drilling system is provided. The drilling system includes a rotating control head for sealing the tubular string while permitting axial movement of the ... | 05/09/2006 |
| 6955225 | Method of and apparatus for securing capillary tubing in a wellhead A body having a bore therethrough for insertion of capillary tubing. A first means slidably coupled into the bore of the body frictionally restrains movement of the tubing by hydraulically engaging the periphery of the tubing with an elastomeric compressible sealing... | 10/18/2005 |
| 6953085 | Well pressure activated pack-off head The present invention discloses a well pressure activated pack off head comprising a hollow body formed for coaxial connection to the wellhead which provides for unobstructed passage of a data transmitting wireline therethrough. Disposed coaxially within the hollow ... | 10/11/2005 |
| 6910531 | Rotating drilling stripper A stripper assembly for sealing around a drill pipe includes an outer housing having a lateral outlet. The outer housing is mounted at an upper end of a well for receiving an upward flow of drilling fluid and diverting the drilling fluid through the lateral outlet. ... | 06/28/2005 |
| 6904982 | Subsea mud pump and control system A sub-sea mud pump system includes a plurality of pump units, and each pumping unit includes a plurality of pumping elements. Each pumping element includes a pressure vessel with a first and a second chamber, a separating member between the first and second chambers... | 06/14/2005 |
| 6896076 | Rotating drilling head gripper A rotating drilling head seals around drill pipe while drilling. The drilling head has an outer housing that mounts to the rig floor. An inner housing is rotatably mounted in the outer housing. An annular bladder is mounted in the inner housing. An annular elastomer... | 05/24/2005 |
| 6880634 | Coiled tubing acoustic telemetry system and method System, apparatus, and method of telemetering downhole sensor information to the surface while operations are performed in an oil or gas well using coiled tubing. Data are transmitted on coiled tubing as digital signals encoded in acoustic signals. In one implementa... | 04/19/2005 |
| 6843313 | Pump drive head with stuffing box A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for the stuffing box. To prevent rotary and vertical motion of the ... | 01/18/2005 |
| 6702012 | High pressure rotating drilling head assembly with hydraulically removable packer The present invention generally provides a reduced downtime maintenance apparatus and method for replacing and/or repairing a subassembly in sealing equipment for oil field use. The invention allows the removal of rotating portions of a rotary drilling he... | 03/09/2004 |
| 6588502 | Well pressure activated pack-off head A well pressure activated pack off head comprising a hollow body formed for coaxial connection to the wellhead which provides for unobstructed passage of a data transmitting wireline therethrough. Disposed coaxially within the hollow body is a pack off ru... | 07/08/2003 |
| 6547002 | High pressure rotating drilling head assembly with hydraulically removable packer The present invention generally provides a reduced downtime maintenance apparatus and method for replacing and/or repairing a subassembly in sealing equipment for oil field use. The invention allows the removal of rotating portions of a rotary drilling he... | 04/15/2003 |
| 6520253 | Rotating drilling head system with static seals A rotatable head assembly wherein there is an outer housing that carries a cartridge assembly that permits rotational movement. The cartridge assembly made up of a cartridge housing and cartridge body that is rotatable within the cartridge housing. Static... | 02/18/2003 |
| 6505691 | Subsea mud pump and control system The invention is a subsea pump that includes pumping elements, each pumping element including a pressure vessel with a first and a second chamber therein and a separating member disposed between the first and second chambers. The first and second chambers... | 01/14/2003 |
| 6439302 | Stripper packer A stripper packer includes a main body having a first end and a second end. A passage extends through the main body from the first end to the second end, thereby facilitating the passage of coiled tubing through the main body when the coiled tubing is bei... | 08/27/2002 |
| 6167959 | Adjustable stuffing boxes for pump rods Stuffing boxes for use with reciprocating or rotating pump rods for downhole pumps include a lower housing adapted to be mounted on a wellhead and provided with internal bores for receiving the pump rod and a packing housing engaged with the lower housing... | 01/02/2001 |
| 6024172 | Blow-out preventer The invention provides a versatile blow-out preventer having a hydraulically activated bladder and a mechanically operated set of rams mounted in a single body, occupying a minimum of vertical space, and being adapted to operate whether or not there is eq... | 02/15/2000 |
| 5848643 | Rotating blowout preventer A rotating blowout preventer is disclosed that provides the rotating spindle assembly with lugs that are moved downwardly through vertical slots in the preventer housing then horizontally into horizontal grooves in the housing to lock the rotating spindle... | 12/15/1998 |
| 5636688 | Self aligning stuffing box for pumpjack units A self aligning stuffing box for a pumpjack unit of the type having a polished rod reciprocatingly extending therethrough and downhole to a pump located at the lower end of a borehole. The stuffing box has a main body that terminates in a tubing adaptor a... | 06/10/1997 |
| 5615736 | Unitary diversionary-tubing hanger and energizable rod seal A simple one piece device, herein referred to as an unitary diversionary-tubing hanger, or UDTH, for attachment to a wellhead that functions as a tubing hanger, a diverter of flow from the vertical to the horizontal or visa versa, and a securing device fo... | 04/01/1997 |
| 5361832 | Annular packer and insert An annular packer (P) with an axial bore (21) includes an elastomer body (23) with inserts (22) partially embedded therein and spaced circumferentially about the axial bore (21). The inserts (22) each support an element (24') embedded in the elastomer bod... | 11/08/1994 |
| 5343944 | Self aligning stuffing box for pumpjack units A self aligning stuffing box for a pumpjack unit of the type having a polished rod reciprocatingly extending therethrough and downhole to a pump located at the lower end of the borehole. The stuffing box is an annular main body having a tubing adaptor at ... | 09/06/1994 |
| 5058903 | Drill rod seal For use with a raise drill or other earth or rock drills. A seal assembly comprises a housing for the sealing engagement with the walls at the top of the shaft, a flexible, generally cylindrical seal for engagement with a drill rod and an inflatable bladd... | 10/22/1991 |
| 5048603 | Lubricator corrosion inhibitor treatment Apparatus for running tools suspended from a wireline into a wellbore under pressure, while simultaneously cleaning and treating the wireline with treatment fluid to inhibit the wireline against corrosion. A lubricator barrel and a cylinder is connected t... | 09/17/1991 |
| 4949785 | Force-limiting/wear compensating annular sealing element for blowout preventers An improved annular sealing element for oil well blowout preventers includes a plurality of curved metal segments spaced apart at regular circumferential angles and imbedded in a resilient matrix forming a generally lenticular-shaped body with a hollow ce... | 08/21/1990 |
| 4828024 | Diverter system and blowout preventer A system is disclosed which may alternatively be used as a diverter or as a blowout preventer for a drilling rig. The system comprises a blowout preventer attached above a spool having a hydraulically driven sleeve/piston. An outlet flow passage in the sp... | 05/09/1989 |
| 4690213 | Pneumatic pipe wiper system Disclosed is a pipe wiper device and system for stripping fluid from the external surface of tubular articles being pulled from the wellhead of a well. The wiper device includes a container having a carriage movably mounted therein. A pair of wiper pad as... | 09/01/1987 |
