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 |
| 7290611 | Methods and systems for cementing wells that lack surface casing Methods and systems for cementing casing in well bores drilled in subterranean formations, and more particularly, methods and systems for cementing casing in a well bore without surface casing or a well head are provided. A method provided herein may comprise sealin... | 11/06/2007 |
| 7231968 | Well cap systems A system for capping the upper opening of a well having an accommodation for a remotely-located control device. More specifically, a well cap system for a water-well having a pipe casing that permits one or more well control apparatus to be located within the well c... | 06/19/2007 |
| 7225871 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore A system for cementing a casing in an open wellbore having no surface casing, wherein an annulus is defined between the casing and the wellbore, the system having: an annular plug around the casing at the mouth of the wellbore; a cement composition pump fluidly conn... | 06/05/2007 |
| 7204304 | Removable surface pack-off device for reverse cementing applications A removable surface pack-off device adapted for use in reverse cementing applications is provided. The device includes a housing adapted to be mounted between the ends of an inner casing and an outer casing at or near the surface of a well and at least one fluid pas... | 04/17/2007 |
| 6920925 | Wellhead isolation tool A wellhead isolation tool and a wellhead assembly incorporating such a tool are provided. The wellhead assembly has an annular assembly coupled to a well. The annular assembly may include a casing head coupled to the well and a tubing head mounted over the casing he... | 07/26/2005 |
| 6044904 | Wellhead assembly A wellhead assembly provides a connection between a protruding wellhead pipe of a landfill and piping that leads to treatment, disposal, or recovery equipment, or the like. The wellhead assembly includes a first substantially hollow cylindrical member tha... | 04/04/2000 |
| 5664626 | Mechanical plug device A mechanical plug device for an environmental monitoring well is disclosed for sealing the exposed top end of a well casing in order to prevent pollutants from entering the monitoring well. The plug is lockable to prevent unauthorized access to the monito... | 09/09/1997 |
| 5641017 | Locking assembly for monitor wells An internal lock assembly securely locks a monitor well lid and cover to protect and safeguard the monitor well so as to enhance the monitor well's accuracy and environmental compliance. The user friendly lock assembly has a special latch which engages a ... | 06/24/1997 |
| 5553979 | Pull cap for attachment to a probe rod A pull cap is positioned about the exposed end of a probe rod and engages a pulling device to remove the probe rod from the ground. The pull cap has a first body section with a first concave surface disposed adjacent one end of the first section and for e... | 09/10/1996 |
| 5441108 | Fluid spill catching, containing, collection and recovery system for wellheads A system for catching, containing and collecting fluids spilled from or adjacent to a wellhead and for recovering the fluids by automatically transporting the spilled fluids to the wellhead production flowline includes a deflector for attachment to the we... | 08/15/1995 |
| 5394939 | Well head stuffing box leak detector and container A well head stuffing box leak detector and container is installable about the stuffing box of an oil well pump installation and provides for containment of any fluid leakage from worn packing or seals within the stuffing box. The device is relatively inex... | 03/07/1995 |
| 5184608 | Well pipe top cap A well pipe top enclosing pipe cap is provided that has two pivotally interconnected half cylindrical concave pipe end enclosing halves pivotal from an open state to a closed state. The half cylindrical concave halves made of iron, or steel, have half cir... | 02/09/1993 |
| 5170846 | System and apparatus for controlling a well A system utilizing an apparatus for controlling a gushing well comprises a vehicle having articulated components such as a boom and an arm with a carriage assembly at the end of the articulated arm. The system is adapted to transport and position the appa... | 12/15/1992 |
| 5150751 | Stuffing box leak containment apparatus Apparatus for containing and collecting leaks from the stuffing box of a fluid producing wellhead comprising collection means carried by the wellhead below the stuffing box and encircling the wellhead and at least two separate upstanding hollow shapes of ... | 09/29/1992 |
| 5111879 | Sanitary locking lip split well seal A well seal and split packer for a well seal. The well seal includes a split packer having interconnecting lips to allow the packer to be slipped around one or more installed drop pipes while providing an essentially leakproof seal after installation with... | 05/12/1992 |
| 4848458 | Lockable well cap A lockable well cap for capping the upper end of a well casing. A base member, which has an upwardly and inwardly interior surface with tapered upwardly directed serrations formed thereon, frictionally engages a portion of the well casing. The outside sur... | 07/18/1989 |
| 4665976 | Fluid deflection shield assembly A fluid deflection shield assembly for use with an oil well pump having a polished rod reciprocating within a stuffing box and providing a fluid-tight seal entirely around the stuffing box and the polished rod whereby the fluid deflection shield assembly ... | 05/19/1987 |
| 4291767 | Method for stabilizing and hanging surface casing Surface casing stabilizer and hanger means includes a downwardly tapered and inwardly inclined annular outer surface and a concentric, contoured inner annular surface. The surface casing hanger and stabilizer engages and supports surface casing in a condu... | 09/29/1981 |
| 4253638 | Blowout preventer A blowout preventer having a body and bonnets hinged thereto with throw latches for securing the bonnets to the body, wedges between the body and the hinges for adjusting the tilt of the bonnet and the position of the hinge side of the bonnets when closed... | 03/03/1981 |
