| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166187000 | Expanded by confined fluid from central chamber, pump or plunger | 11 |
| 20080196885 | Shaft Plugging System - A shaft plug ( | 08-21-2008 |
| 20080296014 | INTERVENTIONLESS COMPOSITE PACKER - An element includes a tube, at least in part including a shape memory material; and a swellable material disposed adjacent the tube. | 12-04-2008 |
| 20090078407 | RETRIEVABLE DOWNHOLE PACKER ASSEMBLY - A retrievable packer assembly for use in operations into wellbores, wherein the packer assembly comprises a continuous mandrel with a valve body including seal cups to seal against an inner surface of a casing, and a gap defined between the valve body and the mandrel to permit or prevent circulation of fluid between the interior of the mandrel and a section of the casing above the seal cups in response to the movement of the valve body. | 03-26-2009 |
| 20090084539 | Downhole sealing devices having a shape-memory material and methods of manufacturing and using same - Sealing devices such as packers comprise a shape-memory material having a compressed run-in position or shape and an original expanded position or shape. The shape-memory material may comprise a polyurethane foam material held in the compressed run-in position by an adhesion material that is dissolvable by a fluid. The fluid may be a wellbore fluid already present in the wellbore or a fluid pumped down the wellbore after the sealing device is disposed within the wellbore. The fluid may also be a production fluid from the well. Upon being contacted by the fluid, the adhesion material dissolves and the shape-memory material expands to its original expanded position or shape, thereby sealing and dividing the annulus of the wellbore. | 04-02-2009 |
| 20090178800 | Multi-Layer Water Swelling Packer - A packer for downhole use responds to water containing fluids by swelling from its core. The core is preferably covered with an outer layer that preferably has a lower rate of diffusion and swelling than the core that it surrounds. Because of this arrangement, the packer can be delivered to the desired location before it is set by swelling of the core. The outer layer can also be responsive to water containing fluids by dissolving slowly to allow time to properly position the packer before the core swells to a sealing relationship with the surrounding tubular or the wellbore wall. | 07-16-2009 |
| 20100012314 | METHOD AND DOWNHOLE TOOL ACTUATOR - A downhole tool actuator includes, an inflatable member, a first portion on an uphole end of the inflatable member that is attachable to a first structure of a downhole tool, and a second portion on a downhole end of the inflatable member that is attachable to a second structure of the downhole tool. The actuator configured so that the second structure is movable relative to the first structure in response to movement of the second portion relative to the first portion in response to inflation of the inflatable member. | 01-21-2010 |
| 20100038074 | ANTI-EXTRUSION DEVICE FOR SWELL RUBBER PACKER - A system for use in a wellbore is disclosed. The system may include a tube, a swell packer surrounding a portion of the tube, a first pair of plates coupled to an outer surface of the tube and positioned at a first end of the swell packer, each of the first pair of plates having a plurality of slots extending inwardly from an outer edge of the plate, the regions between slots defining petals, wherein at least one of the slots of one of the first pair of plates overlaps with at least one of the petals of the second of the first pair of plates, and a second pair of plates coupled to the outer surface of the tube and positioned at a second end of the swell packer, each of the second pair of plates having a plurality of slots extending inwardly from an outer edge of the plate, the regions between slots defining petals wherein at least one of the slots of one of the second pair of plates overlaps with at least one of the petals of the second of the second pair of plates. | 02-18-2010 |
| 20130312953 | INFLATABLE BOREHOLE PLUG - An inflatable borehole plug assembly comprising two or more inflatable bags operatively associated with one another, wherein inflation of the inflatable bags results in the formation of the plug. | 11-28-2013 |
| 20140000869 | ISOLATION ASSEMBLY FOR INFLOW CONTROL DEVICE | 01-02-2014 |
| 20140338890 | RETRIEVABLE SWELLABLE PACKER - A well tool can include a swellable material, and a degradable material which supports the swellable material, but which degrades in response to contact with a selected fluid in a well. A packer for use in a subterranean well can include a swellable material, and a degradable material which supports the swellable material. A method of unsetting a packer in a subterranean well can include the steps of, after the packer has been set in the well, exposing a degradable material of the packer to a selected fluid, thereby degrading the degradable material, and a seal element of the packer being unsupported by the degradable material in response to the exposing step. | 11-20-2014 |
| 20150376976 | Pressure Relief-Assisted Packer - A wellbore completion method comprising disposing a pressure relief-assisted packer comprising two packer elements within an axial flow bore of a first tubular string disposed within a wellbore so as to define an annular space between the pressure relief-assisted packer and the first tubular string, and setting the pressure relief-assisted packer such that a portion of the annular space between the two packer elements comes into fluid communication with a pressure relief volume during the setting of the pressure relief-assisted packer. | 12-31-2015 |
