Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7380589 | Subsea coiled tubing injector with pressure compensation A pressure compensated tubing injector for injecting coiled tubing into a subsea wellhead or flowline. A traction device including grippers carried on respective opposing chain loops provides gripping engagement with the coiled tubing to longitudinally move the coil... | 06/03/2008 |
| 6857634 | BOP assembly with metal inserts A blowout preventer assembly 10 includes opposed rams 12, 14, each including a rubber or elastomer sealing assembly 16, 18, with a plurality of inserts 20 forming an array 22 of metal inserts within each sealing assembly. Each inse... | 02/22/2005 |
| 6719042 | Shear ram assembly The shear ram assembly 10 for shearing an oil well tubular T includes a first ram 16 axially moveable along the first axis 66 for moving an upper blade 17, and an opposing second ram 18 axially moveable along the second ram axis | 04/13/2004 |
| 6527062 | Well drilling method and system Methods and systems are provided for drilling a well bore 60 through a subterranean formation using a drilling rig 25 and a drill string 50, whereby the bottom hole pressure while circulating drilling fluid ("ECD") may be substantially maintained when cir... | 03/04/2003 |
| 6374925 | Well drilling method and system Methods and systems are provided for drilling a well bore 60 through a subterranean formation using a drilling rig 25 and a drill string 50, whereby the bottom hole pressure while circulating drilling fluid ("ECD") may be substantially maintained when cir... | 04/23/2002 |
| 6244560 | Blowout preventer ram actuating mechanism A ram actuating mechanism 20 for a blowout preventer 10, the ram actuating mechanism 20 including a hydraulic booster for enhancing the ram closing force. The ram actuating mechanism 20 may be compatible for use with primary pistons 25 which include inter... | 06/12/2001 |
| 6192680 | Subsea hydraulic control system A subsea hydraulic control system 10 supplies hydraulic fluid to operate subsea equipment SE, which in exemplary application may be a blowout preventer having an opening port and a closing port. A hydraulic control system includes a fluid storage vessel 1... | 02/27/2001 |
| 5975484 | Door connectors A blowout preventer (10) is provided for use in a hydrocarbon recovery operation to prevent a well blowout. The BOP body (20) has a central passageway (22),therein for receiving an oilfield tubular T. First and second radially opposing doors (16) and (18)... | 11/02/1999 |
| 5897094 | BOP with improved door connectors A blowout preventer 10 is provided for use in a hydrocarbon recovery operation to prevent a well blowout. The BOP body 20 has a central passageway 22 therein for receiving an oilfield tubular T. First and second radially opposing doors 16 and 18 are provi... | 04/27/1999 |
| 5778918 | Pilot valve with improved cage A two-position pilot-operated SPM valve includes an improved cage for controlling fluid flow to a ram of a subsea blowout preventer. SPM valve 10 includes a piston 48 axially movable with respect to a valve body 12, a spool 38 for moving within the valve ... | 07/14/1998 |
| 5735502 | BOP with partially equalized ram shafts A hydraulically controlled ram assembly 12 for an oilwell blowout preventer 10 effects the opening and closing of a ram block 30 interconnected with a piston 34. The piston 34 is movable within the ram housing 22 in response to a hydraulic pressure to sea... | 04/07/1998 |
| 5662171 | Rotating blowout preventer and method The rotatable blowout preventer 10 includes a stationary outer housing 12 and a rotatable inner housing 38 having a curved surface 42 thereon defining a portion of a sphere. An annular packer assembly 46 includes spherical packer elements for sliding enga... | 09/02/1997 |
| 5588491 | Rotating blowout preventer and method The rotatable blowout preventer 10 comprises a stationary outer housing 12 and a rotatable inner housing 38 having a curved surface 42 thereon defining a portion of a sphere. An annular packer assembly 46 includes spherical packer elements for sliding eng... | 12/31/1996 |
| 5575452 | Blowout preventer with ram wedge locks A hydraulically controlled ram actuating mechanism 10 for a blowout preventer controls the opening and closing of a ram block 12 interconnected with a ram 14 movable within a ram housing 26 along ram axis 16. The ram piston 24 and a locking piston 62 are ... | 11/19/1996 |
| 5505426 | Hydraulically controlled blowout preventer A hydraulically controlled blowout preventer 10 and method are disclosed for simultaneously moving two sealing assemblies 24, 27 to seal around an oilfield tubular 15 within the bore 14 of BOP 10. A single manual operator 20 may be rotated to simultaneous... | 04/09/1996 |
| 5400857 | Oilfield tubular shear ram and method for blowout prevention A ram assembly for positioning within a through bore of a blowout preventer body includes first and second opposing ram pistons each powering a respective knife blade. Each knife blade may have a pair of angled shear edges on opposite sides of the respect... | 03/28/1995 |
