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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7360590 | Energized thermoplastic sealing element and method of use A packer element for use in forming a fluid pressure barrier within a wellbore. The packer element uses a thermoplastic component to accomplish the seal against the interior diameter of a surrounding tubular and an energizing component that is preferably formed of e... | 04/22/2008 |
| 7244694 | Viscoelastic fluids containing nanotubes for oilfield uses The present invention relates to viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most particularly as a fracturing fluid. Viscoelastic fluid compositions of the prese... | 07/17/2007 |
| 7152689 | System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing The invention is a system and method used to seal between an open wellbore and a tubing by bringing the wellbore wall inwardly so as to enable sections of earth from the wellbore wall to create the required seal against the tubing. The earth sections that make up th... | 12/26/2006 |
| 6769491 | Anchoring and sealing system for a downhole tool The present invention generally relates to a method and apparatus for sealing an annulus in a wellbore. In one aspect, the apparatus is an anchoring and sealing system for a downhole tool such as a bridge plug, packer, or frac-plug. The sealing system comprises of a... | 08/03/2004 |
| 6481497 | High temperature high pressure retrievable packer with barrel slip A high temperature, high pressure retrievable packer adapted for service under extreme operating conditions when the packer apparatus is held in the wellbore with a mechanical slip and a barrel slip. The barrel slip has a barrel slip body with a plurality... | 11/19/2002 |
| 6213204 | High load, thin slip system A high-load slip system allows better transmission of loads from the slips to the body. The cone comprises longitudinal slots and the body comprises tabs which are disposed in those slots. The load is transferred from the slips to the cone and into the ta... | 04/10/2001 |
| 5678635 | Thru tubing bridge plug and method A bridge plug assembly 10 contracts radially inwardly to pass through tubing string T and then expands radially outwardly in response to axially compressive forces to set within a casing string C. Upper and lower independently moveable slips 52 and 54 of ... | 10/21/1997 |
| 5148866 | Well tool anchoring mechanism with improved slip release A releasable boring mechanism for releasably securing a tool downhole in a well includes upper and lower sets of slip expandable radially outward from retracted positions into extended positions for engagement with the inside wall of a well casing when a ... | 09/22/1992 |
| 5014782 | Venting packer A venting packer tool for insertion into the open end of a pipe under repair and the like, characterized by telescoping body members hydraulically actuated to simultaneously operate an anchor to grip within the pipe and a packer to seal within the pipe, t... | 05/14/1991 |
| 4862961 | Retrievable tension-set packer A retrievable tension-set packer, by itself, and in conjunction with retrievable tension-set bridge plug for use in field testing of oil well casings is disclosed. The retrievable tension-set packer is constructed to be set and sealed above an area of the... | 09/05/1989 |
| 4844154 | Well packer A well packer for sealing an annular space within a well bore around a tubing string including a tubular mandrel, an expandable seal assembly on the mandrel for sealing around the mandrel with a well bore wall, a slip assembly on the mandrel for releasabl... | 07/04/1989 |
| 4836278 | Apparatus for isolating a plurality of vertically spaced perforations in a well conduit A plurality of packing elements are mounted in vertically spaced relationship on a tubing string with the spacing of the elements corresponding generally to the spacing of a plurality of sets of perforations in a well conduit. The lowermost packing unit i... | 06/06/1989 |
| 4796698 | Landing nipple and plug A drilling template for multiple wells has a dummy post on the template associated with each wellhead position and a wellhead connector is transferable between the dummy post and wellhead during completion and workover operations. A subsea wellhead is pro... | 01/10/1989 |
| 4709758 | High temperature packer for well conduits A packer for effecting steam treatment of a production formation of a subterranean well comprises an insulated mandrel which is slidably inserted within the bore of an inner tubular body assembly. An outer operative tubular assembly surrounds the inner as... | 12/01/1987 |
| 4671354 | Well packer A well packer adapted to be set and reset in a well bore without removal of the packer from the well bore including a packer mandrel adapted to be connected with a tubing string, an interlocking segment assembly on the packer mandrel for releasable connec... | 06/09/1987 |
| 4665977 | Tension set seal bore packer A seal bore packer comprising a packer subassembly which can be employed with either wireline or tubing manipulatable packer setting subassemblies is disclosed. Packing elements and slips on a packer subassembly are expanded when relative axial forces are... | 05/19/1987 |
| 4651818 | Metal seal tubing plug A plug is disclosed for sealing off in a tubing having a sealing surface. A housing contains an annular metal seal means and two sets of segmented expanding lockdown rings that react with three solid rings to provide a downward motion. The expanding lockd... | 03/24/1987 |
| 4646829 | Hydraulically set and released bridge plug A bridge plug apparatus includes a mandrel assembly having an operating fluid passageway disposed therein. A releasable coupling assembly has an upper end adapted to be connected to a tubing string and has a lower portion adapted to be releasably connecte... | 03/03/1987 |
| 4610300 | Tubing actuated retrievable packer A packer apparatus for use in a subterranean well comprises an inner mandrel and means for applying tension to the inner mandrel to set radially expandable slips and packing elements. The mandrel can be releasably positioned in a first position to secure ... | 09/09/1986 |
| 4583590 | Slip releasing apparatus The slip releasing apparatus described herein includes a unitary slip member having wall engaging teeth located in diagonally opposite upper and lower ends and carries a pair of releasing pins mounted therein that project inwardly therefrom. The pins are ... | 04/22/1986 |
| 4573537 | Casing packer A well casing packer includes a seal mechanism, mounted on a mandrel. The casing packer comprises a seal element and a wedge member for driving the seal element radially outward against a well casing by applying radial forces to the seal element. This wed... | 03/04/1986 |
| 4548265 | Downhole steam packing A steam or thermal packer for use in subterranean wells having an integral expansion joint is disclosed. The packer has a multi-component, nonresilient, nonenergizing packing element, as well as a multi-component, nonenergizing, nonresilient sealing eleme... | 10/22/1985 |
| 4524825 | Well packer The packer of the present invention includes mandrel means having first ratchet means and lug means disposed thereon, second ratchet means and drag spring means associated with tubular housing means surrounding said mandrel means, said housing means inclu... | 06/25/1985 |
| 4496162 | Well sealing assembly having resilient seal ring with metal end caps A well annulus sealing assembly having a body with a seal ring assembly including a resilient ring with thin metal end caps, and radial energizing means including a body with a first outer surface and an enlarged outer surface with means for moving the se... | 01/29/1985 |
| 4441553 | Anchor for use in a well A packer utilizing a C-slip in which, during release of the packer, the upper expander pulls the C-slip off of the lower expander. If a packer is stuck in the well, the upper expander is keyed to the slip to prevent rotation of the upper expander during m... | 04/10/1984 |
| 4406324 | Bottom lock pipe seal assembly A seal assembly is disclosed including first and second annular members mutually movable longitudinally to effect a first configuration in which the seal assembly is releasably anchored to a cylindrical body circumscribed by the seal assembly, and a secon... | 09/27/1983 |
| 4296806 | High temperature well packer A well packer for use in geothermal wells or stem injection wells. The packer can be anchored to the inner wall of a casing string to resist differential pressure in either direction. The anchoring means includes a single set of slip elements which are hy... | 10/27/1981 |
| 4176715 | High temperature well packer A well packer has a casing engaging slip mechanism and a packing element carried on a tubular body which is released from the slip assembly enabling setting of the slips and packing by an upward pull on a running in string of pipe. The body and the expand... | 12/04/1979 |
| 4083405 | Well drilling method and apparatus therefor The method and apparatus for drilling a well bore and setting a liner therein in which the drill string with a bit and underreamers thereon also includes a liner supported thereon which has a gripping assembly with two sets of gripping elements and a pair... | 04/11/1978 |
