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| Number | Title | Issue Date |
| 7210533 | Disposable downhole tool with segmented compression element and method A disposable downhole tool includes an elongated body and a compression element. The compression element is disposed about the elongated body. The compression element includes at least one preconfigured division at disposal of the disposable downhole tool. ... | 05/01/2007 |
| 6969070 | Split carrier annulus seal assembly for wellhead systems The seal assembly 10 seal between a subsea wellhead housing 12 and a casing hanger 16. A metal seal body 20 includes fingers 32 and 34 and one or more elastomeric seals 38. An upper seal body 64 may include thr... | 11/29/2005 |
| 6948715 | Seal assembly with accumulator ring A seal assembly with an accumulator ring for protecting a seal from explosive decompression is disclosed. The accumulator ring and the seal are contained within a seal gland. The seal is made of a material that is susceptible to damage from explosive decompression. ... | 09/27/2005 |
| 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 |
| 6554287 | Collapsing type seal for expandable tubular connections A seal for a radially expansible conduit connection is disclosed. The seal includes a first sealing surface disposed proximal to an end of a male portion of the connection and a corresponding second sealing surface disposed proximal to an end of a female ... | 04/29/2003 |
| 6484808 | Stripper/packer A stripper/packer includes first and second packing elements, which are interchangeable to alleviate inventory concerns. The upper actuating hydraulic piston is the same diameter as the lower piston, which allows the operator to utilize the same amount of... | 11/26/2002 |
| 6390202 | Setting an annular seal A device is disclosed for setting an annular seal in an annular space formed between a large diameter tubular and a small diameter tubular extending into the large diameter tubular. The device comprises a carrier block suitable to be located at a position... | 05/21/2002 |
| 6305483 | Multi-piece rotary cone drill bit seal Multi-piece seals of this invention include an annular seal body that is formed from an elastomeric energizing material, and that has a static seal surface along one surface and a contacting surface along another surface. A remaining seal portion in the f... | 10/23/2001 |
| 6283477 | Annular chamber seal Internal and external metal-to-metal radially interfering seals are provided for an annular chamber. Typically, an annular chamber is used in tubular goods to be part of the hydraulic control circuitry, such as for operating subsurface equipment such as a... | 09/04/2001 |
| 6260850 | Annular chamber seal Internal and external metal-to-metal radially interfering seals are provided for an annular chamber. Typically, an annular chamber is used in tubular goods to be part of the hydraulic control circuitry, such as for operating subsurface equipment such as a... | 07/17/2001 |
| 6003873 | J-tube seal The present invention relates to a method and device for sealing the entrance of an elongated element (1) into the lower end of an offshore tube (8), --including the steps of arranging a plug-like device (2) on the element, --pulling a predetermined lengt... | 12/21/1999 |
| 5996695 | Method and apparatus for sealing between casing and wellhead connector structure A method and apparatus for installing a metal annular seal (54) between the outer rough surface of a casing member (11) which has had a portion thereof cutaway with a remaining portion projecting upwardly from the upper end of a casing head (12). A slip i... | 12/07/1999 |
| 5881420 | Chimney clamp and seal A tool for clamping against the interior of a chimney flue having a scissors jack mechanism for adjustably clamping into various size chimneys. A seal plate for sliding over the shaft of the clamping device and for tightly sealing against the interior chi... | 03/16/1999 |
| 5835546 | System for seating at least one gasket in a pressure vessel penetration where a column penetrates telescopically A system for seating at least one gasket member used to seal a pressure vessel penetration where a column penetrates therethrough includes a tubular member, a column which penetrates through the tubular member in a telescoping manner and is normally movab... | 11/10/1998 |
| 4981174 | Leakproof stuffing box with external lubrication for polish rod A stuffing box for an oil well pump which utilizes a separate lubricating fluid chamber for the polish rod rather than using the crude oil that is being pumped as the lubricating fluid.... | 01/01/1991 |
| 4825948 | Remotely variable multiple bore ram system and method Method and apparatus for varying from a remote location the bore of shoes within a ram-type blow out preventer to sealingly engage pipe of varying diameters. A plurality of shoe pairs is provided, each pair defining a cylindrical surface having a differen... | 05/02/1989 |
| 4805699 | Method and apparatus for setting, unsetting, and retrieving a packer or bridge plug from a subterranean well Methods and apparatus are provided for retrieving an inflatable packer or bridge plug of a type which may be passed through a small diameter tubing, seal against a relatively large diameter casing by passing fluid to the packer through a remedial tubing t... | 02/21/1989 |
| 4783084 | Head for a rotating blowout preventor A rotating blowout preventor is comprised of a rotating head assembly which is removably received at the upper end of a main housing. The rotating parts of the head assembly are held fastened together by the provision of a unique locking plate arrangement... | 11/08/1988 |
| 4583746 | Method and apparatus for sealing between two concentric members Method and apparatus for establishing a seal across the annulus between two concentric rigid members to seal the annulus against large fluid pressures. A specially formed seal ring, advantageously of low carbon steel in the annealed state, is preliminaril... | 04/22/1986 |
| 4337563 | Method of assembling multiple wall drill pipe Multiple wall drill pipe adapted for use in a drill pipe string comprising an outer pipe member; an inner pipe member disposed within the outer pipe member; and means for releasably connecting the inner pipe member and the outer pipe member in fixed axial... | 07/06/1982 |
| 4290484 | Seal receptacle assembly A seal receptacle assembly is provided for affixation on a well conduit. The seal receptacle assembly can be provided to permit telescopic contraction and expansion of the well conduit in response to heating, cooling, or pressurization of the well conduit... | 09/22/1981 |
| 4215747 | Blowout preventer with tubing aligning apparatus A blowout preventer with an aligning apparatus having a housing with a vertical bore therethrough and a blowout preventer in one portion of the housing with guideways extending outward from the bore, aligning guideways in the housing spaced from and paral... | 08/05/1980 |
| 4113085 | Sealing arrangements for use under water A sealing arrangement between a transit capsule and a sub-sea capsule comprises a member(secured and sealed to the sub-sea capsule)which seals to the transit capsule but can be disengaged from the sub-sea capsule and carried by the transit capsule to the ... | 09/12/1978 |
| 4099571 | Down hold packing gland and method for long stroke pumper A packing gland is positioned down within an oil well hole and is held in place by elastomeric sealing and locking devices which are actuated from above the hole through a torque tube. Rotation of the torque tube in one direction lowers the tube axially r... | 07/11/1978 |
| 4003430 | Apparatus for the replacement of seals in a well ram type blow out preventer This invention relates to the replacement of seals in ram type blow out preventers and is especially useful for replacing such seals where the well head is at a considerable distance from the drill head, for example on the sea bed. The method comprises re... | 01/18/1977 |
