| Tejas Research and Engineering, LP Patent applications |
| Patent application number | Title | Published |
|---|
| 20110198096 | Unlimited Downhole Fracture Zone System - Apparatus and method are provided for diverting treatment fluids in wells. Sliding sleeves or valves are sequentially opened by dropping balls that may be of uniform size. Opening of one valve moves a collet into position such that the same size ball can be used to open a second valve. Any selected number of valves can be opened with the same size balls. Systems using the valves are also disclosed, along with methods for operating. | 08-18-2011 |
| 20110180271 | Integrated Completion String and Method for Making and Using - An integrated apparatus for use in hydrocarbon-producing wells is provided. A device for controlling inflow from a subterranean formation (ICD), a filtration medium for fine particle exclusion and a sealing element (packer) are disposed along a single cylindrical mandrel, preferably an oilfield tubular. The apparatus may be used in a completion method to enhance production rates and increase the total recovery from a subterranean hydrocarbon-producing formation. | 07-28-2011 |
| 20100327196 | Purging Mechanism for a Hemi-Wedge Valve - The present invention is directed to a technique of purging unwanted particles from the interior of a valve body. Inlet and outlet ports are formed in the valve housing to allow for circulation of the fluid within the valve body. The flow path of the fluid is isolated from the main fluid flow path when the valve is in the open or closed position. Additionally the pressure of the fluid is at a level higher than that of the main fluid flow. | 12-30-2010 |
| 20100208408 | Light-Activated Switch and Circuit for Select-Fire Perforating Guns - Apparatus and method are provided for selectively firing apparatus in a well when the apparatus is fired by an electrical voltage and produces light upon firing. A photoresistor or other device changes in an electrical property when the light from firing of a section of the apparatus impinges on the photoresistor or other electronic device. The change in electrical property shifts the state of a relay such that the following section of the device can be fired with a voltage of the opposite polarity to that used in firing the preceding section. A test and resetting apparatus for the select-fire apparatus is also provided. | 08-19-2010 |
| 20100051847 | Method and Apparatus for Severing Conduits - Apparatus is provided for cutting a conduit passing through a valve as the valve is closed. The apparatus may be used in subsea well operations or as a safety valve in any well. A spherical outside surface on a cutter element seats in the apparatus. The cutter element cuts a conduit passing through the apparatus in one location and leaves free the severed pieces of the conduit. An actuator to rotate the cutter element may be driven by energy stored in springs or by hydraulic pressure. | 03-04-2010 |
