Measuring and testing – Borehole or drilling – Downhole test
Patent
1989-04-06
1990-03-27
Williams, Hezron E.
Measuring and testing
Borehole or drilling
Downhole test
73660, 5116571, 125 13R, 318490, E21B 4900
Patent
active
049110020
ABSTRACT:
Measuring apparatus for use with a motor driven rotary saw blade is disclosed so that dynamic measurements can be obtained while cutting lengthwise a core sample from a well borehole. The core sample is held, and the motor driven rotary driven saw blade is used to cut along the length of the core sample. Selected transducers are installed, and all the transducers connect to a CPU which also has connections with a clock, memory and recorder. Data is recorded either as a function of time or as a function of the location of the cutting tool along the core sample. Transducers include a current monitor for current operating the motor, a microphone measuring sound levels generated by the saw blade cutting through the core sample, a tension measuring device which provides the force which causes the motor to traverse along the length of the core sample, and also X, Y, Z coordinate vibration sensors such as accelerometers. Another measuring device responds to the force applied to the motor causing it to move, and the relative position of the saw blade relative to the disk is also measured.
REFERENCES:
patent: 4372174 (1983-02-01), Cymbalisty et al.
patent: 4527101 (1985-07-01), Zavis et al.
patent: 4537177 (1985-08-01), Steere, Jr. et al.
patent: 4559600 (1985-12-01), Rao
patent: 4744242 (1988-05-01), Anderson et al.
Enderlin Milton B.
Knode Thomas
Vickers Keith
Beard William J.
Halliburton Logging Services Inc.
O'Shea Kevin D.
Williams Hezron E.
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