Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7290603 | Downhole plug Downhole plug, especially designed for closing an annular conduit in an oil or gas well, under high pressure and temperature. It has two radially expandable ring elements 13, 15, which are arranged on a carrying cylindrical element 32, between two mutu... | 11/06/2007 |
| 7178600 | Apparatus and methods for utilizing a downhole deployment valve Methods and apparatus for utilizing a downhole deployment valve (DDV) to isolate a pressure in a portion of a bore are disclosed. Any combination of fail safe features may be used with or incorporated into the DDV such as redundant valve members, an upward opening f... | 02/20/2007 |
| 7048066 | Downhole sealing tools and method of use A downhole tool apparatus for insertion into and sealing engagement with a wellbore. The downhole tool includes upper and lower casing engaging members and an intervening sealing member. In one aspect the intervening sealing member may be a deformable material. In a... | 05/23/2006 |
| 7004684 | Method for construction of piers in soil and a pier construction Apparatus and an associated method for forming a pier in a soil matrix includes a hollow tube with a restricted expansion section connected to and adjacent a soil penetrating bottom head element which is configured to facilitate discharge of pier forming material su... | 02/28/2006 |
| 6994170 | Expandable sand control screen assembly having fluid flow control capabilities and method for use of same A sand control screen assembly (60) comprises a base pipe (62) having at least one opening (64) that allows fluid flow therethrough and a filter medium (66) positioned about the exterior of the base pipe (62) that allows fluid flow... | 02/07/2006 |
| 6631763 | Method and system for testing a borehole by the use of a movable plug A method and a system for testing a borehole in an underground formation by the use of so-called closed chamber testing. When carrying out the method, a test or production pipe (5) is carried down the borehole, where the test pipe can be closed at its upp... | 10/14/2003 |
| 6431275 | Inflation control device Inflation control arrangement including a non-oriented continuous strand material bound between concentric layers of elastomeric material in an inflatable tool. Where the continuous strand material is located, inflation will be delayed.... | 08/13/2002 |
| 6152224 | Downhole apparatus Apparatus for use in setting packers and other fluid actuated devices includes a tubular body (222), a valve (228) for controlling the flow of well fluid through a port (234) in the body (222) and a valve actuator (224) mounted on the body (222) and movab... | 11/28/2000 |
| 6056061 | Apparatus for completing a subterranean well and associated methods Apparatus for completing a subterranean well and associated methods provide economical and efficient well completions. In one described embodiment, a well completion apparatus includes a packer which is settable by application of a compressive axial force... | 05/02/2000 |
| 5873414 | Bypass valve for downhole motor A bypass valve, particularly useful for allowing a tubing string to fill or drain during tripping in and tripping out, is disclosed. The bypass valve can be used in conjunction with a downhole motor operated through a tubing string. The bypass valve featu... | 02/23/1999 |
| 5653289 | Adjustable jackup drilling system hanger A casing tensioning system applies tension to a string of casing between a subsea wellhead and a surface wellhead. The tensioning system has an outer hanger with a load ring and a ratchet ring that engage a mandrel. The mandrel is connected into the strin... | 08/05/1997 |
| 5309993 | Chevron seal for a well tool A sealing apparatus is provided for sealing between concentric relatively moveable tubular members. The sealing apparatus is comprised of a plurality of retainer seal rings, made of a high temperature thermoplastic, and between each retainer seal ring is ... | 05/10/1994 |
