Measuring and testing – Borehole or drilling – Downhole test
Patent
1975-04-14
1976-09-21
Swisher, S. Clement
Measuring and testing
Borehole or drilling
Downhole test
166264, E21B 4700
Patent
active
039811891
ABSTRACT:
Two methods and two steam samplers are disclosed for sampling steam, at any location or depth in a steam injection well for determining the quality of the saturated steam at that location. The samplers each comprise an elongated cylindrical vessel with a tube having openings mounted longitudinally internally of the vessel for forming an annulus between the vessel and the tube for trapping the steam liquid phase and vapor phase, while ejecting the excess liquid phase and steam vapor phase out the bottom of the tube. The tube has a second internally sliding rod for closing the openings and a spring and J-latch with a weight for releasably locking the tubes in closed position at any depth in the well by a sudden downward inertial force for shearing a locking pin and a subsequent upward spring movement to the closed and locked upper position for sealing the steam condensate and vapor in the annulus for recovery at the surface. A method for sampling and a method for forming a sampler, as well as two latch combinations are disclosed.
REFERENCES:
patent: 3103813 (1963-09-01), Bourne et al.
patent: 3249054 (1966-05-01), Hill
Calvin Douglas G.
Howard Curtis E.
Nichols Theron H.
Ries C. G.
Swisher S. Clement
Texaco Inc.
Whaley T. H.
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