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| Number | Title | Issue Date |
| 7997334 | Apparatus and method A method and apparatus for containing fluid in ah area of a wellbore annulus, in which fluid is energized to create a fluid flow which is at least partially obstructed and is directed to form in the annulus a localized area of high pressure to contain fluid in an ar... | 08/16/2011 |
| 7931078 | Stuffing box apparatus A stuffing box apparatus for sealing between a polish rod in a hydrocarbon production well comprises a tubular housing arranged for connection to the well which has a bore therethrough to receive the polish rod. Sealing members are supported in the bore of the housi... | 04/26/2011 |
| 7861771 | Rod pump stuffing box A stuffing box for sealing around a polished rod in a well including a cylindrical connector for receiving the polished rod, a packing member having top and lateral surfaces and wherein the packing member is concentrically disposed around the polished rod, a body co... | 01/04/2011 |
| 7798209 | Seal configuration for top drive swivel apparatus and method For use with a top drive power unit supported for connection with a well string in a well bore to selectively impart longitudinal and/or rotational movement to the well string, a feeder for supplying a pumpable substance such as cement and the like from an external ... | 09/21/2010 |
| 7762319 | Metal annulus seal A wellhead seal assembly forms a metal-to-metal seal between inner and outer wellhead members. A metal seal ring has inner and outer walls separated by a slot. An energizing ring has a C-ring captured on its outer surface. When the energizing ring is moved further i... | 07/27/2010 |
| 7614447 | System, method, and apparatus for energizable metal seals in well heads A bi-directional metal seal is energized and un-energized by a rolling action that takes place between radiused seal lips. The seal forms an assembly with upper and lower energizing rings. The rings have external grooves for engaging hook ends on the inner surfaces ... | 11/10/2009 |
| 7562702 | Drain cap stuffing box As may be used in a positive displacement pump system, a capped stuffing box assembly includes a stuffing box mountable to a discharge tee to prevent pumped fluid from escaping collection via the discharge tee. The stuffing box is capped by a drain cup that may be r... | 07/21/2009 |
| 7533720 | Seal configuration for top drive swivel apparatus and method For use with a top drive power unit supported for connection with a well string in a well bore to selectively impart longitudinal and/or rotational movement to the well string, a feeder for supplying a pumpable substance such as cement and the like from an external ... | 05/19/2009 |
| 7464750 | Rotary fluid-sealing structure using speed-reduction stages The present invention provides for a rotary fluid-sealing structure for a harsh environment which reduces the PV pressure (×velocity) that a sealing system may be exposed through the use of a rotary speed reducing planetary gear system. The system may have multiple... | 12/16/2008 |
| 7438126 | Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well An apparatus for controlling vertical movement of a tubular within a wellhead includes an anchor spool connected atop the wellhead, and a detachable superstructure supporting the tubular. The anchor spool provides connectors for detachably connecting bottom ends of ... | 10/21/2008 |
| 7416021 | Armored stripper rubber A stripper rubber comprising a resilient stripper rubber body, an insert support, and a plurality of stripper rubber inserts. The resilient stripper rubber body has a drillstring bore extending therethrough. The insert support is at least partially within the body. ... | 08/26/2008 |
| 7409988 | Blowout preventer packing element with non-metallic composite inserts A packing element for a blowout preventer includes an annular flexible non-metallic composite body disposed about a longitudinal axis that is adapted to be compressively displaced inwardly towards the axis. A plurality of non-metallic composite inserts are embedded ... | 08/12/2008 |
| 7401645 | Downhole fluid disposal apparatus and methods A seal cartridge and barrel manifold seal are provided for use in a subterranean well and in a method to inject fluid, that is initially produced into the well from a subterranean formation or zone, into another subterranean formation or zone. The seal cartridge has... | 07/22/2008 |
| 7380610 | Stripper rubber insert assembly A high-pressure stripper rubber provides inserts and support members that cooperatively support the profile of the rubber against elastic deformation. The inserts dynamically cooperate to resist elastic deformation of the rubber due to down hole pressure. The stripp... | 06/03/2008 |
| 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 |
| 7343968 | Washpipe seal assembly A coupling seal assembly is described for directing a pressurized abrasive fluid between a non-rotating conduit member and a rotating second conduit member. The seal assembly includes a first ceramic floating seal member secured to the non-rotating conduit member an... | 03/18/2008 |
| 7337851 | Rotating stuffing box with split standpipe A system comprising a top mounted rotating stuffing box is provided for use with downhole pump (e.g., Progressing Cavity Pump) applications. The system also includes a split standpipe configuration that allows the stuffing box to be quickly installed or removed as n... | 03/04/2008 |
| 7325599 | Safety shield for rotary drilling rigs This invention relates to a novel safety shield for rotary drilling rigs. More particularly, the invention pertains to a portable, clam-shell style extendible leg safety shield which can be readily installed on the ground around the drill stem of an operational dril... | 02/05/2008 |
| 7294222 | External pipe cleaner Disclosed is a pipe cleaner apparatus that is attached to a pipe fusion machine. The pipe cleaner removes dirt, snow, mud, and other debris from the outer surface of pipe sections prior to the butt fusion process. The pipe cleaner may be a wiper through which the pi... | 11/13/2007 |
| 7290601 | Braided thermocouple cable bundle A product consisting of a plurality of thermocouple cables braided or wound and covered with protective armour, thereby forming a braided bundle. The product is used in accordance with a method involving a further step of inserting the braided bundle into a well. | 11/06/2007 |
| 7290612 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore The present invention is directed to an apparatus and method for reverse circulation cementing a casing in an open-hole wellbore. The apparatus includes a surface pack-off device, which has a housing defined by an upper section and lower section. A load bearing plat... | 11/06/2007 |
| 7284602 | Self-aligning stuffing box A self-aligning stuffing box having a spherical joint between the upper and lower portions of the housing permits universal movement of the upper portion relative to the lower portion to permit a rod to pass through the bore if the axis of the rod is misaligned rela... | 10/23/2007 |
| 7278494 | Stripper rubber insert assembly A high-pressure stripper rubber provides inserts and support members that cooperatively support the profile of the rubber against elastic deformation. The inserts dynamically cooperate to resist elastic deformation of the rubber due to down hole pressure. The stripp... | 10/09/2007 |
| 7255163 | Convertible rotary seal for progressing cavity pump drivehead A convertible rotary seal has a housing for receiving a polish rod. A mandrel is rotatably mounted in the seal housing and surrounds the polish rod. A wear sleeve surrounding the mandrel engages a primary seal. A secondary seal engages the mandrel and polish rod and... | 08/14/2007 |
| 7240727 | Armored stripper rubber An armored stripper rubber is provided that protects the drillstring bore of the stripper rubber from substrate infiltration, yet pivotally dilates to facilitate the passage of drillstring components through the bore while effectively maintaining a fluid-tight seal.... | 07/10/2007 |
| 7237618 | Stripper rubber insert assembly A high-pressure stripper rubber provides inserts and support members that cooperatively support the profile of the rubber against elastic deformation. The inserts dynamically cooperate to resist elastic deformation of the rubber due to down hole pressure. The stripp... | 07/03/2007 |
| 7210525 | Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well An apparatus for controlling vertical movement of a tubular within a wellhead includes an anchor spool connected atop the wellhead, and a detachable superstructure supporting the tubular. The anchor spool provides connectors for detachably connecting bottom ends of ... | 05/01/2007 |
| 7204304 | Removable surface pack-off device for reverse cementing applications A removable surface pack-off device adapted for use in reverse cementing applications is provided. The device includes a housing adapted to be mounted between the ends of an inner casing and an outer casing at or near the surface of a well and at least one fluid pas... | 04/17/2007 |
| 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 |
| 7134498 | Well drilling and completions system A system for use in down hole operations, the system comprising a wellhead; a BOP ram package connected at one end to the wellhead and having an axial bore extending from the wellhead to the other end; a device above the other end of the BOP ram package for isolatin... | 11/14/2006 |
| 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 |
| 7055593 | Well stuffing box packing Disclosed herein are apparatus and methods for sealing a well stuffing box. ... | 06/06/2006 |
| 7011160 | High torque and high capacity rotatable center core with ram body assemblies An apparatus for use in a drill string is disclosed. The apparatus includes an inner core assembly having a first and second transverse bore, and wherein the inner core assembly has a first end and a second end. The apparatus further includes a first and second pist... | 03/14/2006 |
| 6877565 | Arrangement for the removal of cuttings and gas arising from drilling operations An end piece arrangement is mounted on an end of a pipe sleeve to close off the annular passage between the pipe sleeve and drill stem and to divert an upward flow of sludge, cuttings and gas into a conduit system to transport the flow to a remote location. In one e... | 04/12/2005 |
| 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 |
| 6776232 | Insert rod guide An insert rod guide has an elongated cylindrical member with an externally threaded first or upper end of a first diameter and an internally threaded lower or second end of a larger diameter with an axial bore extending between the ends. Intermediate the ends of the... | 08/17/2004 |
| 6739390 | Articulated seal An articulated seal for use with polished rod and rotary drive head assemblies is described. In particular, an articulated seal assembly or system 10 is described which seals a rotating drive head and polished rod between high pressure internal fluids within ... | 05/25/2004 |
| 6651746 | High torque and high capacity rotatable center core and floatable sealed body assemblies with universals ram applications and method A high torque and high capacity rotatable center core and floatable sealed body apparatus with universal ram applications. The apparatus includes a central core assembly, connected between a swivel on its upper end and the work string below, with the cent... | 11/25/2003 |
| 6648335 | Metal-to-metal seal assembly for oil and gas production apparatus A metal-to-metal seal assembly provides a dynamic seal between a piston and a cylinder. A first seal engages the inner diameter of the piston, while a second seal engages an outer diameter of the piston. The piston is disposed between an inner mandrel and... | 11/18/2003 |
| 6637516 | High torque and high capacity rotatable center core and floatable sealed body assemblies with universal RAM applications and method A high torque and high capacity rotatable center core and floatable sealed body assembly with universal ram applications and method for use in a drill string, including a central core assembly, connected between a swivel on its upper end and the drill str... | 10/28/2003 |
