Downhole packer
Patent 5775429 Issued on July 7, 1998. Estimated Expiration Date: 
February 3, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 3, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInflatable tool Method and device for improving the coefficient of transmission to geological formations of energy created by a well seismic source Inflatable tool with rib expansion support Patent #: 4979570 InventorsApplicationNo. 792404 filed on 02/03/1997US Classes:166/387, With sealing feature (e.g., packer)166/196, Central support has shoulders expanding sealing portion, or telescopes166/206EXPANSIBLE ANCHOR OR CASINGExaminersPrimary: Schoeppel, Roger J.International ClassE21B 033/12AbstractA packer for sealing a space downhole in a well. The packer includes a deformable sheath having a body and first and second ends for defining an interior volume proximate to a tool surface. A material located within the interior volume is deformable, when the sheath second end is moved toward the sheath first end, to move the deformable sheath into the downhole space. The sheath can function as a sealing element or a backup element, and can be applied to different structures and tool configurations downhole in a wellbore. For example, the packer can be applied to plugs, to through tubing mandrals, and to other well tools in open hole or in cased wellbore configurations. The packer resists damage to the seal elements, provides confirmation of the packer setting force, and is less expensive than conventional packer designs. | |
