Abstract: A seal for sealing between a first component and a second component includes a first metallic element comprising a plurality of sealing profiles and defining a groove therein and a second metallic element comprising a plurality of sealing profiles and a protrusion mated with the groove of the first metallic element. The seal further includes a retaining member engaged with the second metallic element and capable of being engaged with one of the first component and the second component for retaining the first and second metallic elements in a position, wherein some of the plurality of sealing profiles are capable of sealing against the first component and some of the plurality of sealing profiles are capable of sealing against the second component.

Abstract: A sealing assembly for protecting a downhole connection is disclosed. The sealing assembly includes independently energized metal—metal seals and a housing that prevents the energization of individual seals from affecting other seals.

Abstract: A seal stack includes one or more first seals that are adapted to seal in at least a first range of temperatures. The seal stack also includes a second seal that is adjacent to at least one of the first seals. The second seal is adapted to seal in at least a lower range of temperatures than the first range of temperatures.

Abstract: The present invention generally provides a seal assembly, or seal array, having a seal body and one or more non-extrusion end rings to prevent or minimize extrusion of the seal body between either the packer assembly and the casing or between the packer assembly and the gauge ring used to energize the seal assembly. More particularly, the end ring of the present invention has discrete deformable portions, which may be integrally encapsulated within a resilient cover or which may be provided as separate end ring members. The discrete deformable portions may further be provided with a deformable hinge portion formed therebetween.

Abstract: A seal assembly having a first seal with a first mating surface and a recess in the first mating surface, and a second seal having a second mating surface and a recess in the second mating surface. The first mating surface of the first seal is adjacent to the second mating surface of the second seal and a first thermal expansion restricter is received simultaneously into the recesses of the first and second mating surfaces of the first and second seals, respectively.

Abstract: A seal assembly formed of a T-seal, a pair of back-up rings abutting each side of the T-seal, and a bearing abutting the side of each of the back-up rings. The T-seal is formed of a elastomer material, the back-up ring is formed of a PTFE (polytetraflouroethylene polymer) material, and the bearings are formed of a carbon reinforced PEEK (polyetheretherketone) material.

Abstract: A diverter body having an upper portion, a central portion and a lower portion is secured to the upper end of a riser and lands in a housing. The central portion has lateral flow openings that axially align with a lateral flowline outlet in the housing. A pair of identical gallery seals locate above and below the lateral flowline outlet. The upper gallery seal is located between the upper portion, the central portion and the housing. The upper gallery seal has upper and lower metal rings and a central elastomer sandwiched therebetween. An outer diameter of the elastomer seals against the housing bore. The rings are symmetric and are mated to the elastomer along interfaces which are S-shaped in cross-section to form shoulders. The shoulders face radially inward. An annular cavity and a pair of flexible annular lips are formed along the inner diameter portion of the elastomer. A passage extends through the diverter bodies and communicates with the cavity.

Abstract: A composite packer or bridge plug includes substantially all nonmetallic components. The design allows the setting tool metallic components to be retrieved after the bridge plug is set. The slips contain flats with mating flats on the cones which extend to one end of the cones and guides for the slips to facilitate proper slip movement into engagement with the wellbore. A lock ring rides on the nonmetallic mandrel and secures the set, using a buttress-type thread to engage into the mandrel body. Alternative designs are revealed for backup to the sealing elements to prevent extrusion. In one design, split rings are axially compressed so that they grow in radial dimension to act as extrusion barriers. In another design, tapered scored rings are rotationally locked against each other and are axially compressed so that they bend into contact with the wellbore to act as extrusion barriers. Axial travel to obtain an extrusion barrier is minimized.

Abstract: A sealing element for a packer or bridge plug or other downhole tool is illustrated which employs the use of back-up rings above and/or below a resilient seal. The various sleeves which are moved with respect to each other to compress the sealing element are made so that they are physically connected to the back-up rings. As a result, upon run-in, inadvertent compression of the seal is prevented and upon release, a physical separation occurs between the back-up ring and the sealing element, which allows the sealing element to expand and relax. Subsequent upward movement of the packer or bridge plug easily deflects the back-up ring since the sealing element is no longer in a compressed state directly underneath it. The packer then can easily be removed.