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| Number | Title | Issue Date |
| 5509478 | Method of determining the quality of steam for stimulating hydrocarbon production A method has been discovered for determining the quality of steam reading a subterranean formation through a well bore. The steam is passed through a choke which imparts critical flow characteristics. A turbine meter is calibrated at the surface at known ... | 04/23/1996 |
| 5470749 | Method for determining steam quality using a foaming surfactant Steam quality is measured by mixing the steam with a small amount of surfactant to convert the steam to a stable foam, passing the stable foam through a capillary tube to determine foam quality (volume of vapor per volume of vapor and liquid) by measuring... | 11/28/1995 |
| 5138876 | Method and apparatus for measuring steam profiles in steam injection wells A method and apparatus for determining the vapor flow only, or the vapor and liquid flows into various formations surrounding a thermal injection well. The apparatus utilizes a downhole tool having bristles on its outer surface for impeding the flow of fl... | 08/18/1992 |
| 5094103 | Steam quality and flow rate measurement A method and apparatus for measuring both the quality and flow rate of steam injected into a hydrocarbon formation in a thermal recovery process. The method measures both the quantity of water and the flow rate of the steam. Both measurements can be made ... | 03/10/1992 |
| 5044436 | Steam injection profiling with unstable radioactive isotopes A method of determining relative liquid and vapor phase steam profiles in a steam injection well utilizes an unstable radioactive isotope. A dual detector gamma ray logging tool is inserted into the well at a depth below the perforation zone. The unstable... | 09/03/1991 |
| 4547078 | Method and device for measuring steam quality Method and apparatus for obtaining a sample of the liquid component of steam and determining the quality of steam in a vessel or the like, such as steam flowing in a line used for steam injection in an oil well. The steam quality is determined by the know... | 10/15/1985 |
| 4396063 | Process and system for providing multiple streams of wet steam having substantially equal quality for recovering heavy oil A system and method for splitting a stream of wet steam into at least two streams of equal quality for injection into separate wells wherein the steam is utilized as a thermal recovery fluid in an in situ oil recovery process. The method comprises generat... | 08/02/1983 |
