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| Number | Title | Issue Date |
| 7392852 | Zonal isolation using elastic memory foam A method and apparatus for forming an elastic memory foam into an expansion element with an outer diameter larger than a borehole, heating the expansion element to its transition temperature and compressing it to a smaller run-in diameter, cooling the compressed exp... | 07/01/2008 |
| 7252142 | Annular isolators for expandable tubulars in wellbores The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the... | 08/07/2007 |
| 7243732 | Zonal isolation using elastic memory foam A method and apparatus for forming an elastic memory foam into an expansion element with an outer diameter larger than a borehole, heating the expansion element to its transition temperature and compressing it to a smaller run-in diameter, cooling the compressed exp... | 07/17/2007 |
| 7216706 | Annular isolators for tubulars in wellbores The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming mate... | 05/15/2007 |
| 7059415 | Wellbore system with annular seal member A wellbore system having a borehole extending into an earth formation, a tubular element extending into the borehole whereby a cylindrical wall surrounds the tubular element in a manner that an annular space is formed between the tubular element and the cylindrical ... | 06/13/2006 |
| 6935432 | Method and apparatus for forming an annular barrier in a wellbore In accordance with the present invention, an apparatus and method are provided which utilize an expandable media assembly to create an annular barrier in a subterranean well. The apparatus comprises a tubing assembly for placement in the wellbore, the tubing assembl... | 08/30/2005 |
| 6892820 | Modular retrievable packer A packer that is usable with a subterranean well includes an assembly to circumscribe one out of multiple tubular arrays that are inserted through the packer. The packer also includes a member that is separable from the assembly to configure the assembly for connect... | 05/17/2005 |
| 6840328 | Anti-extrusion apparatus and method An apparatus, system, and method useful for discouraging the extrusion of at least one deformable member of a device into a space adjacent to the deformable member when the device is disposed within a borehole and the deformable member extends from the device to the... | 01/11/2005 |
| 6808024 | Downhole seal assembly and method for use of same A seal assembly (60) for controlling the flow of fluids in an annulus (68) between a continuous tubular (62) and a cased wellbore (64) is disclosed. The seal assembly (60) includes anchor slips (72) and a seal element (78... | 10/26/2004 |
| 6659178 | Apparatus and method for sealing well bores and bore holes A method and apparatus for sealing well bores is disclosed. The apparatus comprises plates which initially have a width smaller than the diameter of the well bore to be sealed or plugged. The plates are fabricated from a mineral substance which has the pr... | 12/09/2003 |
| 6581682 | Expandable borehole packer The borehole packer is for sealing the annular space around a pipe in a borehole. The packer is pre-manufactured, in-factory. To give the packer the rigidity it needs for handling and transport, the packer is built around an inner sleeve of rigid (metal) ... | 06/24/2003 |
| 6352120 | Packer insert for sealing on multiple items in the wellbore A multiple item sealing packing insert for use with oil field service products in a wellbore has a first member comprising a composite material having an elastomer and a structural support material and a second member comprising a composite material havin... | 03/05/2002 |
| 6182755 | Bellow seal and anchor An annular seal is made of a collapsible bellows. The bellows can function as an anchor or a seal and is easily set into position using relative component movement. The bellows folds can be slanted and their outer sealing edges can have different profiles... | 02/06/2001 |
| 5810085 | Drill hole plugging method utilizing sodium bentonite nodules A method of plugging holes, in particular the plugging of drill holes in the earth. The method utilizes a tubular capsule filled with coarse ground sodium bentonite. The capsule, when inserted into the hole, sinks through any mud or slurry material within... | 09/22/1998 |
| 5657822 | Drill hole plugging method utilizing layered sodium bentonite and liquid retaining particles A method of plugging holes, in particular the plugging of drill holes in the earth. The method utilizes a tubular capsule filled with coarse ground sodium bentonite. The capsule, when inserted into the hole, sinks through any mud or slurry material within... | 08/19/1997 |
| 4942923 | Apparatus for isolating a testing zone in a bore hole screen casing An apparatus for isolating a testing zone in a bore hole screen casing includes a lower plug member sealingly positionable at a desired longitudinal point within the casing and an upper plug that is independent of the lower plug is also sealingly position... | 07/24/1990 |
| 4936386 | Method for sealing well casings in the earth A method for sealing boreholes in the earth and particularly around well casings extending into boreholes in the earth comprises the placement of a plurality of discrete, liquid-absorbing annular sealing elements or disks formed of relatively dry, solid, ... | 06/26/1990 |
| 4919989 | Article for sealing well castings in the earth An article for sealing boreholes in the earth and particularly around well casings extending into boreholes in the earth comprises the placement of a plurality of discrete, liquid-absorbing annular sealing elements or disks formed of relatively dry, solid... | 04/24/1990 |
| 4605067 | Method and apparatus for completing well A well drilled with air or gas as a circulating medium traversing pay zones with greater than normal pressures or pressures such that hydrocarbons would permeate drilling fluids and cement is drilled and completed while permitting a continuous flow of hyd... | 08/12/1986 |
| 4508172 | Tar sand production using thermal stimulation Method and apparatus for recovering hydrocarbons from a subterranean formation in which a well completion, including a well liner, lies in a generally horizontal disposition within the hydrocarbon producing layer. The liner encloses conduit means for deli... | 04/02/1985 |
| 3952799 | Apparatus for borehole drilling Apparatus is disclosed for borehole drilling which provides a pressure-tight seal between the drill pipe and the borehole or casing. The apparatus uses resilient elements between the borehole and the body portion of the drilling head. The resilient elemen... | 04/27/1976 |
