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Bonded Seal with Elastomer Retention Device

IP.com Disclosure Number: IPCOM000243476D
Publication Date: 2015-Sep-24
Document File: 1 page(s) / 14K

Publishing Venue

The IP.com Prior Art Database

Abstract

Bonded Seals are used to seal tubing strings or work strings to Packer bores. An elastomer is bonded to the OD of a metal Insert and provides a bi-directional static or dynamic seal with the Packer bore. An O-Ring on the ID of the Insert provides a static seal with the component that is attached to the tubing/workstring. Pressure/temperature rating of a Bonded Seal can be limited by the manner in which the elastomer is attached to the Insert and by the shear strength of the bonding agent between the elastomer and the Insert. If the elastomer is mechanically restrained by the Insert, a larger load would be required to dislodge it. Similarly, if more surface area is provided between the elastomer and the metal Insert, a larger load would be required to shear the bonding agent. The proposed concept uses either one or a combination of these methods to improve the retention between the Elastomer and the Insert and thereby increase the pressure rating of the Bonded Seal. In this instance, the part is made by 3-d printing (additve manufacturing), so sprues may be needed to properly fix the part during the build process. The sprues would be removed by a secondary lathe operation prior to the bonding process. The bonded part, has considerably more bonding agent surface area. This would not only provide additional surface area but would also require the rubber to tear in order to be removed from the "cleats". Vent holes are provided to allow free movement of air, bonding agent, and elastomer during the bonding process. The "fins" have holes through their webs so that the rubber would again have to tear to be removed. Any of these concepts should improve the retention of the elastomer to the Insert so that a larger load is required to separate them. Bonded Seals are typically discarded after a single use; so, additive manufacturing as a construction method could help reduce the cost of improving the retention of the elastomer to the Insert

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58959

Bonded Seal with Elastomer Retention Device

The metal Insert of a Bonded Seal contains retention devices to either provide additional bonding agent surface area; or, to mechanically restrain the elastomer. Both strategies should increase the load that the Bonded Seal can withstand

Bonded Seals are used to seal tubing strings or work strings to Packer bores. An elastomer is bonded to the OD of a metal Insert and provides a bi-directional static or dynamic seal with the Packer bore. An O-Ring on the ID of the Insert provides a static seal with the component that is attached to the tubing/workstring. Pressure/temperature rating of a Bonded Seal can be limited by the manner in which the elastomer is attached to the Insert and by the shear strength of the bonding agent between the elastomer and the Insert. If the elastomer is mechanically restrained by the Insert, a larger load would be required to dislodge it. Similarly, if more surface area is provided between the elastomer and the metal Insert, a larger load would be required to shear the bonding agent. The proposed concept uses either one or a combination of these methods to improve the retention between the Elastomer and the Insert and thereby increase the pressure rating of the Bonded Seal. In this instance, the part is made by 3-d printing (additve manufacturing), so sprues may be needed to properly fix the part during the build process. The sprues would be removed by a secondary lathe operation prior to the bonding...