Patent
Seal system for wellhead isolation tool diffuser
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TLDR
In this paper, a wellhead isolation tool diffuser utilizing elastomeric cup-shaped seals installed on the exterior of the diffuser is inserted into the production tubing at the wellhead.Abstract:
A seal system for a wellhead isolation tool diffuser utilizing elastomeric cup-shaped seals installed on the exterior of the diffuser, which is inserted into the production tubing at the wellhead After insertion of the diffuser, the production tubing is pressurized, and the seals are set against the interior of the production tubing by the pressure in the well, effecting a tight sealread more
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Patent
Seal for long-time exposures in oil and gas well tools
David D. Szarka,Allen E. Harris +1 more
TL;DR: In this paper, a relatively slidable joint was designed for long-time exposure in oil and gas well tools, with a body portion with a pair of annular arms extending from opposite sides of the body.
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Screw-driven wellhead isolation tool
TL;DR: A wellhead isolation tool comprises a threaded drive rod coaxially aligned with a tubular mandrel having a smooth outer surface as mentioned in this paper, which will sealingly engage the tubular element in the well so that treating fluids or other substances such as, chemicals and erosive flows can be displaced there through at high pressures into the well to fracture or otherwise treat the well without damaging the well.
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Metal seal for a tubular connection
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Cup tool, cup tool cup and method of using the cup tool
Bob McGuire,Danny Lee Artherholt +1 more
TL;DR: A cup tool includes a cup tool tube having a threaded upper end for connection to a high-pressure mandrel, an outer surface over which an elastomeric cup is mounted for reciprocal movement from an unset position for entry into a wellbore to a set position in which an annular gap is obstructed to contain fluid pressure below the cup.
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Downhole tool metal-to-metal seal
TL;DR: A metal-to-metal annular seal for use in downhole tools which may include annular elastomeric backup seals is described in this article. But this work assumes that the sealing member is a separate component or an integral part of another member of the downhole tool.
References
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Patent
Well cementing apparatus
TL;DR: In this paper, the authors describe tools and equipment used for well cementing, including tools, equipment, and equipment. But they do not specify the type of tools used for this application.
Patent
Wellhead isolation tool and method of use thereof
TL;DR: In this article, an approach for isolating a production tubing string in an oilwell from the control head whereby pressures higher than the rated pressure of the controller may be applied to the producing formation, utilizes an outer housing with a telescoping inner mandrel and seals therebetween.
Patent
Wellhead isolation tool
TL;DR: In this article, an improved apparatus for isolating a production tubing string in an oil well from the control head whereby pressures higher than the pressure of a control head may be applied through the production tube string to the producing formation is presented.
Patent
Open hole removable packer
TL;DR: In this paper, the authors describe the use of packers adapted for use in oil wells, and more particularly to be secured in the open or uncased portion of an oil well to effect a seal therein and to prevent fluid under pressure from moving past s the same.
Patent
Tree saver packer cup
TL;DR: A packer cup assembly which attaches to the lower end of the mandrel in the tree saver which is itself attached to the "Christmas Tree" of a well head or the like is described in this article.