Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1989-11-17
1991-07-30
Smith, Leonard E.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417 41, 417 44, 417 63, 200 84R, F04B 4902, F04B 4904
Patent
active
050355813
ABSTRACT:
A system for monitoring and controlling the level of a fluid in a vessel, particularly applicable to controlling the pump operation at an oil well. The system includes a fluid level sensing unit having a plurality of sensors positioned at selected levels in the well casing outside the tubing string. The sensors operate independently to detect the presence of fluid and emit electrical signals which are received by a data conversion and sending unit immediately above the fluid level sensing unit in the well casing. The data conversion and sending unit converts the signals into discreet digital data bits which can be transmitted sequentially in one conductive wire to a data management and pump control unit at a convenient location nearby, usually at the well site. Thus, there is no need for a wire extending from each sensor. The data bits received by the data management and pump control unit are converted to a visual display in a light emitting diode panel. A pump flip-flop automatically operates the pump operating assembly in responsae to the rise and fall of oil or fluid in the well. The data from the sensors also is fed to a computer which stores the data for later retrieval. The computer also calculates other useful information and generates graphics which assist in the management of the oil recovery process.
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McGuire Damon C.
McGuire Danny G.
McGuire Denver C.
Sudberry Mark E.
Lee Mary M.
Scheuermann David W.
Smith Leonard E.
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