Measuring and testing – Borehole or drilling – Downhole test
Patent
1974-07-01
1976-01-27
Myracle, Jerry W.
Measuring and testing
Borehole or drilling
Downhole test
73229, E21B 4710
Patent
active
039344673
ABSTRACT:
In the representative embodiment of the present invention disclosed herein, a well bore flowmeter is provided with a fluid-driven spinner which is uniquely mounted on the closed end of a hollow shaft that is coaxially disposed over a spindle and rotatably journalled thereon by one or more bearings located in the enclosed annular chamber defined between the shaft and the spindle. To protect the bearings, the chamber is filled with a lubricant and the chamber is communicated with the exterior of the flowmeter only by way of a multi-directional passage which effectively serves to block the entry of well bore debris as the flowmeter is operating. As a further protection for the bearings, one or more valve members are also preferably provided for blocking communication with the bearing chamber as the flowmeter is moved into and out of a well bore. These valve members are preferably actuated by the extension and retraction of a centralizer provided for centering the flowmeter as it is operated in a well bore.
REFERENCES:
patent: 2599901 (1952-06-01), Damas
patent: 2607221 (1952-08-01), Babson et al.
patent: 2939626 (1960-06-01), Birman
patent: 3039302 (1962-06-01), Willis
patent: 3630078 (1971-12-01), Bonnet
Archambeau, Jr. Ernest R.
Moore Stewart F.
Myracle Jerry W.
Schlumberger Technology Corporation
Sherman William R.
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