Quotables
"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 7540339 | Sleeved hose assembly and method for jet drilling of lateral wells A sleeved hose assembly for lateral jet drilling through an ultra-short radius curve. The sleeved hose assembly includes a wire-wound high-pressure hose inserted inside a reinforcing sleeve. In general, wire-wound high-pressure hoses exhibit transverse moduli that a... | 06/02/2009 |
| 7524160 | Hydrokinetic speed governor A method for governing the speed of a fluid turbine by establishing a circulating flow and a rotational flow with a rotor, and interrupting the rotational flow with an opposing stator. A related braking apparatus includes a housing, a rotatable shaft, a rotor config... | 04/28/2009 |
| 7201238 | Low friction face sealed reaction turbine rotors Rotary jetting tool including a rotor with axially-opposed pressure-balanced mechanical face seals. Vented upper mechanical face seal enables the rotor to be operated with the relativity low starting torque achievable using reaction forces from offset jets energized... | 04/10/2007 |
| 7198456 | Floating head reaction turbine rotor with improved jet quality A rotary jetting tool including a pressure-balanced rotor, which is achieved using a vented volume. Axial movement of the rotor relative to the housing caused by pressure imbalances acting on the rotor selectively uncovers or opens a vent that places the volume in f... | 04/03/2007 |
| 7139219 | Hydraulic impulse generator and frequency sweep mechanism for borehole applications This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring... | 11/21/2006 |
| 6347675 | Coiled tubing drilling with supercritical carbon dioxide A method for increasing the efficiency of drilling operations by using a drilling fluid material that exists as supercritical fluid or a dense gas at temperature and pressure conditions existing at a drill site. The material can be used to reduce mechanic... | 02/19/2002 |
| 6301766 | Method for metal working using high pressure fluid pulses Methods and apparatus employing an ultra high-pressure fluid pulse to perform metal working operations, including joining and cold working. In one application, an ultra high-pressure fluid pulse is directed into a hollow rivet that is seated within an ori... | 10/16/2001 |
| 6237701 | Impulsive suction pulse generator for borehole Suction pressure pulses are generated within a borehole by closing a valve that interrupts the flow of a drilling fluid (e.g., drilling mud) circulating through one or more high velocity flow courses within the borehole. In one embodiment in which the suc... | 05/29/2001 |
