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| Number | Title | Issue Date |
| 7360590 | Energized thermoplastic sealing element and method of use A packer element for use in forming a fluid pressure barrier within a wellbore. The packer element uses a thermoplastic component to accomplish the seal against the interior diameter of a surrounding tubular and an energizing component that is preferably formed of e... | 04/22/2008 |
| 7275598 | Uncollapsed expandable wellbore junction An uncollapsed expandable wellbore junction and associated methods. In a described embodiment, a method of creating an expanded pressure vessel in a subterranean well includes the step of expanding the pressure vessel in the well, thereby increasing a dimension of t... | 10/02/2007 |
| 7243733 | Cup tool for a high-pressure mandrel and method of using same A cup tool includes a cup tool tube having a threaded upper end for connection to a high-pressure mandrel. The cup tool has an outer surface over which an elastomeric cup is slidably mounted for movement from an unset position for entry into a wellbore to a set posi... | 07/17/2007 |
| 7096938 | Slip energized by longitudinal shrinkage A slip for an expanding hanger or patch is disclosed. The slip is mounted over the hanger body and has an internal profile that nests within a mating profile on the exterior of the hanger. When a compressive force is applied to the hanger, it shrinks longitudinally ... | 08/29/2006 |
| 7044231 | Expandable packer with anchoring feature An expandable packer or anchor is disclosed. It features a gripping device integral to or mounted in a sleeve over the mandrel. Upon expansion, a sealing element engages an outer tubular and the gripping device, such as wickers on slips, preferably digs into the out... | 05/16/2006 |
| 7011312 | Gland packing and sealing apparatus comprising it To provide a novel gland packing and a sealing apparatus comprising this, wherein the gland packing displays high and stable sealability for a stem and an inner wall surface of a stuffing box even for uses further requesting the movability (rotation and reciprocatin... | 03/14/2006 |
| 6843480 | Seal ring for well completion tools A high pressure ring seal for tube assembly joints provides structural foundation ring having inside and outside circumferential channels between end rims. The channels and rims are separated by a web of integral ring material. This web is perforated by a plurality ... | 01/18/2005 |
| 6443458 | Packer A packer comprises an elastomeric member (2) which, in use, will deform radially when subjected to axial pressure. A plurality of steel fingers (3, 4) are vulcanized onto the elastomeric member (2). One end of each steel finger (3, 4) is accomodated in a ... | 09/03/2002 |
| 6343791 | Split mesh end ring 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 a... | 02/05/2002 |
| 6032958 | Bi-directional pressure-energized metal seal A seal system for sealing between a pair of members is provided wherein a pair of substantially aligned walls on inner faces of the members have internal frustoconical portions. A metal ring includes a pair of lips with external frustoconical portions whi... | 03/07/2000 |
| 5641019 | Swab-resistant subterranean well packer A swab-resistant packer is disclosed which prevents the packing element from expanding outwardly to cause swabbing during tripping of the apparatus in a subterranean well. Preferably, a metallic or other cable or cord is placed immediate and circumferenti... | 06/24/1997 |
| 4265459 | Swab cup reinforcing member support A well swab cup has an annular bushing for supporting a plurality of longitudinally extending reinforcing members within an elastomeric cup like body. The reinforcing members are supported around the periphery of the bushing and extend upward to a mid-por... | 05/05/1981 |
| 4254962 | Swab cup having long and short reinforcing members A well swab cup has an annular bushing for supporting a plurality of longitudinally extending wire reinforcing members within an elastomeric cup like body. The reinforcing members are supported in a base cup around the lower portion of the bushing and ext... | 03/10/1981 |
| 4161319 | Expansion packer The conventional expansion packer includes upper and lower elements joined to a central element with the junctions being perpendicular to the longitudinal axis and with the upper and lower elements being formed of a resilient material such as rubber, havi... | 07/17/1979 |
| 4081185 | Oil well swab cup An oil well swab cup with improved wear characteristics utilizes a single integral reinforcing structure featuring a wear surface forming a substantial portion of the external surface of the cup.... | 03/28/1978 |
