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| Number | Title | Issue Date |
| 8016030 | Apparatus and method for containing oil from a deep water oil well An apparatus and method for containing oil from a deep water (greater than 1,000 meters) oil well is disclosed herein. The apparatus has an anchor section, a plurality of riser sections, an upper section and a flow tube. A pressure within the apparatus is equal to a... | 09/13/2011 |
| 7987903 | Apparatus and method for containing oil from a deep water oil well An apparatus and method for containing oil from a deep water (greater than 1,000 meters) oil well is disclosed herein. The apparatus has an anchor section, a plurality of riser sections, an upper section and a flow tube. A pressure within the apparatus is equal to a... | 08/02/2011 |
| 7806175 | Retrivevable frac mandrel and well control stack to facilitate well completion, re-completion or workover and method of use A retrievable frac mandrel and a well control adapter are used to efficiently accomplish well completion, re-completion or workover. The retrievable frac mandrel is inserted in a tubing head spool of a well to be completed, re-completed or re-worked. The well contro... | 10/05/2010 |
| RE41507 | Air filter for a well An air filter for a well is installed within a well casing of the well. The air filter forming an airtight seal around the well casing of the well, such that all the air that enters and exits the well must pass through the air filter. The air filter preferably inclu... | 08/17/2010 |
| 7726393 | Wellhead isolation tool and wellhead assembly incorporating the same A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end ... | 06/01/2010 |
| 7650936 | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal r... | 01/26/2010 |
| 7571764 | Well cover plate arrangement and method of use A well cover arrangement is shown for covering the exposed opening of a well where the well has a submersible pump supported on a collared well string which is suspended downwardly in the well. The cover arrangement includes both a U-plate with a U-shaped opening th... | 08/11/2009 |
| 7520322 | Wellhead isolation tool and method of fracturing a well A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end ... | 04/21/2009 |
| 7493944 | Wellhead isolation tool and method of fracturing a well A wellhead assembly is provided including a first tubular member, a hanger mounted within the first tubular member and an annular member coupled to the outer surface of the hanger. The assembly also includes a second tubular member mounted to the annular member and ... | 02/24/2009 |
| 7475721 | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal r... | 01/13/2009 |
| 7469742 | Well cap method and apparatus A gas well cap seal assembly adapted to seal the casing bowl of a gas well and to pressurize the annulus region between the inner surface of the well bore and the outer surface of the well casing which is filled with wet cement. The pressurized annulus aids in the p... | 12/30/2008 |
| 7422070 | Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel A casing mandrel for an independent screwed wellhead includes a pin thread adapted for engagement with a box thread of a well stimulation tool lockdown nut for securing the well stimulation tool against the casing mandrel top end. A well stimulation tool and a tubin... | 09/09/2008 |
| 7416020 | Wellhead isolation tool, wellhead assembly incorporating the same, and method of fracturing a well A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end ... | 08/26/2008 |
| 7363969 | Casing vent security device A casing vent security device includes an in-line section in communication with a casing vent, the in-line section having an ambient air passageway for selectively allowing ambient air to pass through the in-line section and into the vent. The device further include... | 04/29/2008 |
| 7347455 | Riser protector A piping riser protector for protectively covering the end portion of a riser assembly that includes a larger diameter central pipe and a plurality of smaller diameter peripheral pipes connected by a flange includes a polymeric body that protectively covers inner an... | 03/25/2008 |
| 7334634 | High pressure adaptor assembly for use on blow out preventors The high pressure adaptor assembly for use in an annular blow out preventers (BOP) or other type BOPs has an upper and lower body with a bore that communicates between the upper and lower body; a top flange connected to the upper body for connection with a pressure ... | 02/26/2008 |
| 7325598 | Vacuum assisted seal engagement for ROV deployed equipment A method and apparatus for attaching a first component which comprises a depending portion to a second component which comprises a bore that is sized and configured to receive the depending portion, wherein the first and second components are exposed to a fluid whic... | 02/05/2008 |
| 7308934 | Fracturing isolation sleeve An apparatus operatively coupled to a well having a production casing positioned therein, the apparatus including a first device having and internal bore, a second device having an internal bore, and a fracture isolation sleeve disposed at least partially within the... | 12/18/2007 |
| 7296631 | System and method for low-pressure well completion A low-pressure wellhead system with tubular heads and mandrels secured independently using threaded unions. A casing mandrel is secured to a wellhead by a first threaded union. Likewise, a tubing head spool is secured to the casing mandrel using a threaded union. A ... | 11/20/2007 |
| 7293618 | Power slip for drillpipe This invention relates to a mechanical apparatus for gripping and manipulating tubular members, such as drill pipe. The apparatus is essentially an automated slip puller, which generally comprises a slip base, a pulling mechanism pivotally attached to the slip base,... | 11/13/2007 |
| 7278490 | Blast joint swivel for wellhead isolation tool and method of using same A blast joint swivel for use in a wellhead isolation tool includes a blast joint hanger mounted to a top of the wellhead isolation tool and a swivel body rotatably received in the blast joint hanger. The swivel body threadedly connects to a blast joint, which in tur... | 10/09/2007 |
| 7255133 | Fluid pressure system including free floating bladder A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o... | 08/14/2007 |
| 7237615 | Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel A casing mandrel for an independent screwed wellhead includes a pin thread adapted for engagement with a box thread of a well stimulation tool lockdown nut for securing the well stimulation tool against the casing mandrel top end. A well stimulation tool and a tubin... | 07/03/2007 |
| 7231983 | Split locking ring for wellhead components The present invention is directed to a split locking ring for wellhead components. In one illustrative embodiment, the device comprises a first internally threaded wellhead component, a second wellhead component, at least a portion of which is positioned within an o... | 06/19/2007 |
| 7231968 | Well cap systems A system for capping the upper opening of a well having an accommodation for a remotely-located control device. More specifically, a well cap system for a water-well having a pipe casing that permits one or more well control apparatus to be located within the well c... | 06/19/2007 |
| 7207384 | Wellhead and control stack pressure test plug tool A test plug tool for use in testing a pressure integrity of a pressure control stack mounted to a wellhead, including a joint between a casing and a casing support in the wellhead. The test plug tool includes a test plug of an appropriate diameter used to pressure t... | 04/24/2007 |
| 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 |
| 7163054 | Breechblock connectors for use with oil field lines and oil field equipment The invention is directed to breechblock connections to and between oil field equipment and oil field lines for use with oil field equipment associated with oil and gas exploration, drilling, and production. The oil field lines and oil field equipment of the inventi... | 01/16/2007 |
| 7159664 | Method of passing insulated wires through a wellhead opening A method of extending an insulated wire through a wellhead opening of a well that includes casing having a top. The method makes use of an annular cap sized to engage and be retained by the top of the casing, the annular cap having smooth top and radially inward sur... | 01/09/2007 |
| 7159663 | Hybrid wellhead system and method of use A hybrid wellhead system is assembled using a plurality of threaded unions, such as spanner nuts or hammer unions, for securing respective tubular heads and a flanged connection for securing a flow control stack to a top of a tubing head spool. The tubing head spool... | 01/09/2007 |
| 7159652 | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal r... | 01/09/2007 |
| 7128143 | Externally activated seal system for wellhead A method and apparatus for a seal assembly for a unitized wellhead system for land or platform applications utilizes a friction grip technology to create maintainable metal-to-metal seals with finely-controlled contact stresses, lock-down casing and tubing hangers, ... | 10/31/2006 |
| 7111554 | Lock assembly for a stamping device A lock apparatus for securing a hand-stamping device to prevent an unauthorized stamping operation includes two locking heads constructed to establish a ridged interconnection with the base frame and the upper actuator frame of the hand-stamping device. The locking ... | 09/26/2006 |
| 7108071 | Automatic tubing filler Methods and apparatus for filling a tubing string as it is lowered into a subterranean hydrocarbon well. In one embodiment, an apparatus to fill a tubular with fluid in a wellbore comprises a housing defining a central bore. An aperture formed in the housing provide... | 09/19/2006 |
| 7093651 | Water pressure system with pressure tank installed within well casing of well A water pressure system includes a pressure tank installed underground within the well casing of a well. The water pressure system includes a submersible pump connected to the inlet of the pressure tank by a drop pipe. The outlet of the pressure tank is connected to... | 08/22/2006 |
| 7066269 | Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel A casing mandrel for an independent screwed wellhead includes a pin thread adapted for engagement with a box thread of a well stimulation tool lockdown nut for securing the well stimulation tool against the casing mandrel top end. A well stimulation tool and a tubin... | 06/27/2006 |
| 7063160 | Non-orienting tubing hanger system with a flow cage In a subsea wellhead assembly, a tubing hanger in communication with the subsea well has a hanger port extending through its side. A diverter surrounds the tubing hanger and diverts well fluid transmitted from the hanger port around a portion of the tubing hanger. T... | 06/20/2006 |
| 7051804 | Subsea protective cap A cap for covering an open upper end of a subsea structure includes a base and a body. The base has a size, after shrinkage, at least slightly larger than the exterior of the open upper end of the subsea structure. The body is connected to the base and projects down... | 05/30/2006 |
| 7025132 | Flow completion apparatus A flow completion apparatus comprises a wellhead housing installed at an upper end of a well bore and a tubing spool connected over the wellhead housing. The tubing spool includes a central bore extending axially therethrough, a production outlet communicating with ... | 04/11/2006 |
| 7013924 | Fluid pressure system including free floating bladder A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o... | 03/21/2006 |
