Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7823636 | Packer A packer includes first and second external seal elements. The first external seal element is adapted to form an annular seal in the well. The second external seal element is adapted to be moved in response to fluid in the well to produce a force to at least partial... | 11/02/2010 |
| 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 |
| 7357177 | Restriction tolerant packer cup The present invention relates to a packer cup 5 having a deformable leading edge 20 which moves away from well bore or casing obstructions as the packer cup 5 is moved into a well bore. The anaxisymmetric deformable leading edge 20 can be... | 04/15/2008 |
| 7350578 | Diverter plugs for use in well bores and associated methods of use Zonal isolation of well bores is often desirable for performing downhole operations such as stimulation operations. In certain embodiments, diverter plugs for achieving zonal isolation in a casing string in a well bore may comprise a mandrel having a first end and a... | 04/01/2008 |
| 7341110 | Slotted slip element for expandable packer A packer device includes a central packer mandrel and a radially surrounding expansion mandrel that can expand radially. At least one slip mandrel carrying wickers surrounds the expansion mandrel and a plurality of axial slots are disposed within the slip mandrel. | 03/11/2008 |
| 7308935 | Rotary pump stabilizer A stabilizer is provided for stabilizing a rotary or progressive cavity pump suspended from production tubing in well casing. The stabilizer is connected between the production tubing and the pump. The stabilizer has a tubular body having a cylindrical wall and a lo... | 12/18/2007 |
| 7201226 | Downhole measurement system and method A system and method measures a pressure or other measurement at a source (e.g. a hydraulic power supply) and in or near a downhole tool and compares the measurements to verify that, for example, the supply is reaching the tool. The system and method also may utilize... | 04/10/2007 |
| 7198110 | Two slip retrievable packer for extreme duty A packer includes one dual, or double acting, slip and a single acting slip positioned on a mandrel on opposite sides of a packing element and a setting cylinder. The single acting slip is designed to resist forces acting on the mandrel in one direction. Setting for... | 04/03/2007 |
| 7156182 | Method and apparatus for one trip tubular expansion A one trip system for expanding a tubular that is solid or perforated or a screen comprises a downhole assembly that features a hydraulic anchor that can be set, released and repositioned to repeat the process. The anchor is small enough to go through the tubular or... | 01/02/2007 |
| 7128154 | Single-direction cementing plug The present invention generally relates to apparatus and methods for completing a well. Particularly, the present invention relates to a single-direction plug for use with cementing applications and with drilling with casing applications. One embodiment comprises a ... | 10/31/2006 |
| 7073583 | Method and apparatus for expanding tubing downhole Aspects of the invention relate to apparatus and methods for remedial and repair operations downhole. Certain embodiments of apparatus include a lightweight expandable member (22) that can be radially expanded to increased its inner and outer diameters using ... | 07/11/2006 |
| 7059405 | Methods of treating subterranean formations using low-molecular-weight fluids The present invention relates to systems and methods useful in subterranean treatment operations. Examples of methods of the present invention include methods for fracturing a portion of a subterranean formation penetrated by a well bore; methods of enhancing produc... | 06/13/2006 |
| 7044231 | Expandable packer with anchoring feature An expandable packer or anchor is disclosed. It features a gripping device integral to or mounted in a sleeve over the mandrel. Upon expansion, a sealing element engages an outer tubular and the gripping device, such as wickers on slips, preferably digs into the out... | 05/16/2006 |
| 6896061 | Multiple zones frac tool A device and a method are provided for the hydraulic fracturing of multiple zones in a well bore. A stinger carries a plurality of packers into a well bore. Each packer is separably connected to each adjacent packer. As each packer is sequentially secured in the wel... | 05/24/2005 |
| 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 |
| 6691788 | Retrievable packer having a positively operated support ring A retrievable packer (50) for establishing a sealing and gripping engagement between a tubing string and a well casing (34) disposed in a wellbore is disclosed. The retrievable packer (50) comprises a collet member (64) that is slidably disposed about a p... | 02/17/2004 |
| 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 |
| 6540019 | Intelligent thru tubing bridge plug with downhole instrumentation A conventional thru tubing bridge plug is rendered in a more effective and useful downhole tool by incorporating a sensor module complete with preferably a plurality of downhole sensors to monitor downhole parameters such as but not limited to temperature... | 04/01/2003 |
| 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 |
| 6378606 | 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... | 04/30/2002 |
| 6131663 | Method and apparatus for positioning and repositioning a plurality of service tools downhole without rotation A method and apparatus is disclosed for downhole remediation. In the preferred embodiment, a bridge plug and service packer can be run into a well on coiled or rigid tubing. The assembly is capable of being set without rotation. The service packer is lock... | 10/17/2000 |
| 5944102 | High temperature high pressure retrievable packer In a retrievable packer adapted for service under high temperature and high pressure operating conditions, improved retention of the packer in the wellbore is achieved by use of an inventive slip and wedge system, wherein the cones on the wedges are space... | 08/31/1999 |
| 5701954 | High temperature, high pressure retrievable packer In a retrievable packer adapted for service under high temperature and high pressure operating conditions, improved retention of the packer in the wellbore is achieved by use of an inventive slip/wedge system, wherein the cones on the wedges are spaced a ... | 12/30/1997 |
| 5129453 | Quick set well packer An improved well packer for removeable installation in a well casing. A mandrel is associated with the packer for latching engagement with the well packer which can be released from the well packer by a simple rotation of the mandrel by no more than one-q... | 07/14/1992 |
| 5117912 | Method of positioning tubing within a horizontal well A method of selectively and variably positioning tubing within the generally horizontal section of a horizontally drilled well. A tubing string having a guide shoe secured to the end thereof is inserted into a portion of the horizontal section of a horizo... | 06/02/1992 |
| 4928762 | Retrievable bridge plug and packer A retrievable bridge plug and packer apparatus. The tool includes a packer settable by right-hand rotation and vertical manipulation of the tool string and a bridge plug also settable by right-hand rotation and vertical manipulation of the tool string. A ... | 05/29/1990 |
| 4913228 | Dual string tension-set, tension-release well packer A dual string well packer which is anchored at a downhole location within the bore of a well casing string by relative longitudinal movement between the primary tubing string and the secondary tubing string. The well packer is set by applying tension via ... | 04/03/1990 |
| 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 |
| 4018272 | Well packer apparatus Disclosed is a retrievable, hydraulically set well packer which is locked in set position without need for tubing rotation and may be released from set position by shearing a retrieving link with either a straight pull on the production tubing or by the a... | 04/19/1977 |
