| GEOTEK ENERGY, LLC Patent applications |
| Patent application number | Title | Published |
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| 20110079380 | SUBSURFACE WELL COMPLETION SYSTEM HAVING A HEAT EXCHANGER - A subsurface well completion system is provided. The well completion system includes a subsurface heat exchanger section that includes an outer shell and an inner shell having an upper threaded portion, an open inside diameter, one or more inlet boxes and one or more outlet boxes. An upper annular ring extends between the inner shell and the outer shell and has one or more openings. A lower annular ring extends between the inner shell and the outer shell. The lower annular ring is spaced apart from the upper annular ring and has one or more openings. One or more tubes are sealably connected at a first end and a second end to the one or more openings in the upper annular ring and the one or more openings in the lower annular ring, respectively, and extend between the upper and lower annular rings in an annular space between the inner shell and the outer shell. | 04-07-2011 |
| 20110024102 | COMPLETION SYSTEM FOR SUBSURFACE EQUIPMENT - A concentric tubing well completion method and a subsurface annular flow crossover system are provided. The well completion method creates at least three separate, pressure isolated annular flow channels in a wellbore. The subsurface crossover provides for switching fluid flow between the annular flow channels within the completed well. The crossover system can be used in conjunction with other subsurface equipment to more efficiently manage fluid flows in the completed well. For example, fluid from any subsurface reservoir or separate reservoirs can be delivered to the surface. In addition, flow paths can be provided for a fluid circulation loop from the surface, a subsurface fluid lifted to the surface or a fluid moved to a different depth in the well for reinjection. The subsurface crossover also provides a method to shift the fluids from one annular fluid channel to another. The subsurface annular flow crossover system also allows the installation of a device at any intermediate depth in the well while allowing fluid flow past the device thus eliminating the disruption or blocking of the flow for the purposes of heat and produced fluid extraction. For example, the crossover can be used to maintain separation between a working fluid and produced fluids in a subsurface heat exchanger used in a geothermal well or a subsurface turbomachinery such as a subsurface pump. | 02-03-2011 |
