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Duhon, US
Bryan Lee Duhon, Church Point, LA US
| Patent application number | Description | Published |
|---|---|---|
| 20100212881 | Dual Mini Well Surface Control System - A well surface control system for use with various types of work strings such as, but not limited to, drill strings, coiled tubing, snubbing pipe, electric line, production tubing, and wireline. The system includes a main housing with a main bore extending from one end to the other. The main housing is equipped with a side port which communicates with the main bore between the two ends. The main housing is also equipped with two valves for controlling fluid and/or gas flows through the main bore and for severing a component of a work string running through the main bore. The first valve is positioned between the side port and one end of the main housing and the second valve is positioned between the side port and the other end of the main housing. Attached to each end of the main housing is a saver sub, with means for temporarily locking the saver subs to the main housing to prevent circular and longitudinal movement of the saver subs in relation to the main housing. | 08-26-2010 |
David J. Duhon, Kingwood, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090238735 | System and Method for Extending the Range of Hydrocarbon Feeds in Gas Crackers - In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of the at least one transfer line exchanger to quench the process effluent comprising olefins, separating in a separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to the water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for cracking a liquid hydrocarbon feedstock that yield tar is also provided. | 09-24-2009 |
| 20090280042 | Controlling Tar By Quenching Cracked Effluent From A Liquid Fed Gas Cracker - In a system for thermal cracking gaseous feedstocks, the system including a gas cracker for producing an effluent comprising olefins, at least one transfer line exchanger for the recovery of process energy from the effluent and a water quench tower system, a process for extending the range of system feedstocks to include liquid feedstocks that yield tar is provided. The process includes the steps of injecting a first quench fluid downstream of a primary transfer line exchanger to quench the process effluent comprising olefins, separating in a first separation vessel a cracked product and a first byproduct stream comprising tar from the quenched effluent, directing the separated cracked product to a water quench tower system and quenching the separated cracked product with a second quench fluid to produce a cracked gas effluent for recovery and a second byproduct stream comprising tar. An apparatus for carrying out such process is also provided. | 11-12-2009 |
Donavin Duhon, League City, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20100192663 | METHOD FOR TESTING ABRASION RESISTANCE OF A TEST SPECIMEN - A method for testing abrasion resistance of a test specimen made of refractory material, wherein the method includes using an insulated furnace with a first chamber having a refractory lining, a second chamber disposed within the first chamber, a tube for flowing pressurized air into the second chamber, a conduit for flowing heated air from a burner operating on a fuel to the second chamber, for mixing with the pressurized air, and an air gun for mixing an abrading material into the pressurized air prior to introduction to the test specimen. | 08-05-2010 |
| 20100192664 | TEST DEVICE FOR REFRACTORY MATERIAL - A system for testing abrasion resistance of a test specimen made of refractory material, wherein the system includes an insulated furnace with a first chamber having a refractory lining, a second chamber disposed within the first chamber, a tube for flowing pressurized air into the second chamber, a conduit for flowing heated air from a burner operating on a fuel to the second chamber, for mixing with the pressurized air, and an air gun for mixing an abrading material into the pressurized air prior to introduction to the test specimen. | 08-05-2010 |
Edward W. Duhon, Setauket, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20080202911 | Fail safe membrane switches - Membrane switches have at least one trace with two leads, such that its integrity can be tested during deployment of the switch. | 08-28-2008 |
Keefe J. Duhon, New Iberia, LA US
| Patent application number | Description | Published |
|---|---|---|
| 20090061746 | Burr Removing Apparatus and Method - Devices and methods for removing burrs from the outer radial surface of generally cylindrical components during rotation. A manual deburring tool is provided having a gripping handle portion and a “working end” head portion. The head portion preferably includes a curved working plate and gripping means for retaining an abrasive sheet thereupon. The outer radial surface of the rotating workpiece is deburred as a user manually grips the handle portion and applies the curved abrasive surface to the workpiece. | 03-05-2009 |
Mark C. Duhon, Sugar Land, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090090263 | HEAT INSULATING CONTAINER FOR A DETONATOR - An apparatus for use in a wellbore comprises a heat insulating container having an inner space and having a structure defining a hollow containing a vacuum. The apparatus further comprises a reflective layer arranged on a surface of the heat insulating container to reflect heat for reducing radiated heat originated in the wellbore from reaching the inner space. Also, a signal-activated detonator is provided in the inner space of the heat insulating container. | 04-09-2009 |