Steam generation apparatus and associated control system and methods for providing desired steam quality
AssigneeSkavis Corporation
InventorsRandall J. Davis, Charles F. Noll, JR.
Life of this patent
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Abstract
The current disclosure relates to steam generation and supply apparati and associated control systems. Particularly, the current disclosure relates to such steam generation supply apparati and associated control systems that are used for enhanced oil recovery. Certain embodiments are provided including methods and associated control systems related to the startup as well as main steam pressure header control or maintenance of a desired steam quality for such steam generation systems during normal operation.
Claims32
An apparatus for supplying at least one of water and steam to a desired destination at a desired steam quality comprising:
- a feedwater system;
- a steam generation system;
- a delivery system that includes a main steam header pipe that runs from the steam generation system to the desired destination for supplying steam or water;
- a plurality of instruments and devices that are in operative association with the feedwater system, steam generating system, or delivery system configured for sensing physical parameters of water or steam;
- and
- a control system having an input device, output device and memory, said control system being in operative association or communication with said instruments and devices wherein said control system is configured for performing the operation of determining the feedwater enthalpy.
A method of predicting or attaining the desired steam quality of at least one of water and steam supplied by an apparatus capable of producing at least one of water and steam of varying quality, the apparatus including a feedwater supply system, a steam generation system and a delivery system, the method comprising the following steps:
- determining the feedwater enthalpy and flow rate;
- setting a desired value for the quality of at least one of water and steam;
- and
- estimating the enthalpy of the desired steam quality of at least one of water and steam.
Dependencies are inferred from the claim text.