Measuring and testing – Borehole or drilling – Downhole test
Patent
1982-06-21
1984-06-26
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
73149, E21B 4708
Patent
active
044558694
ABSTRACT:
A method for determining the erosion of a borehole or cavity by providing a source of liquid inert gas, preferably nitrogen, placing the inert gas in a storage tank, and suspending the storage tank so that one may determine the actual weight of the nitrogen as it is withdrawn from the tank in liquid state. There is further provided hydraulic means for lifting or lowering the storage tanks suspended from a weight cell as a tank is placed into use or non-use. Further, the liquid nitrogen is pumped from the storage tank with the use of a reciprocating pump, and converted into gaseous nitrogen (in the state of 100.degree. F.,) and is injected into a borehole or the like. The nitrogen gas is then allowed to flow under a certain pressure down the borehole, and due to the properties of nitrogen gas, the nitrogen interfaces at a horizontal plane as it moves down the borehole.
REFERENCES:
patent: 2344771 (1944-03-01), Halliburton
patent: 2384677 (1945-09-01), Hill
patent: 2792708 (1957-05-01), Johnston, Jr. et al.
patent: 2821854 (1958-02-01), Franke
patent: 3446298 (1969-05-01), Cory et al.
Broussard Paul P.
Faul Donald
Granger Donald W.
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