Steam quality and flow rate measurement
This patent describes a method for determining both the quality and quantity of steam containing both vapor and liquid being injected into a hydrocarbon bearing formation in a thermal recovery process. It comprises positioning a bladed rotating member attached to a motor-generator combination downhole adjacent the hydrocarbon formation; measuring the voltage generated by the rotation of the rotating member; positioning a network of bristles across the borehole to contact the wall of the borehole and intercept substantially all of the liquid flowing along the borehole wall; measuring the total drag force due to liquid and vapor flow as the bristles are lowered into the borehole; measuring the total drag force due to liquid and vapor flow as the bristles are withdrawn from the borehole; determining the vapor flow by comparing the measured voltage with predetermined voltage versus vapor flow rate for the rotating member motor/generator combination; and determining the quantity of liquid flowing along the wall of the borehole by utilizing the measured drag forces and predetermined drag force versus vapor flow rate and liquid flow rate measurements.
- Assignee:
- Shell Oil Co., Houston, TX (United States)
- Patent Number(s):
- US 5094103; A
- Application Number:
- PPN: US 7-516589
- OSTI ID:
- 5357739
- Resource Relation:
- Patent File Date: 30 Apr 1990
- Country of Publication:
- United States
- Language:
- English
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