Recorders – Combined with external recorder operating means – Well logging
Patent
1978-09-22
1980-06-17
Hayes, Monroe H.
Recorders
Combined with external recorder operating means
Well logging
73151, 346 33R, G01D 900
Patent
active
042086655
ABSTRACT:
A dynamometer for monitoring the tension in a pair of spaced, elongated members. A pen, actuated by a sensor means, measures the tension in the pair of spaced, elongated members, and places indicia upon a continuously moving chart. The indicia is related to the magnitude of the measured tension and is in the form of spaced-apart, individual curves or plots. Hence the pen contacts the chart for a first time interval; and thereafter, the pen is lifted from the chart for a second time interval so as to cyclically place the indicia upon the chart at successive intervals of time. More specifically, the dynamometer measures the tension in a rod string. The rod string is reciprocated by a pumpjack unit located above the ground and drives a downhole pump. The dynamometer therefore cyclically measures the pumping characteristics of the well at successive, predetermined intervals of time and provides a permanent record which can be stored and subsequently consulted in order to determine the characteristics of the entire pumping unit over a projected interval of time.
REFERENCES:
patent: 2107151 (1938-02-01), Higginson
patent: 3512164 (1970-05-01), Bynum
patent: 4043191 (1977-08-01), Mills
Bates Marcus L.
Hayes Monroe H.
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