초록 ▼

An automatic oil well control and monitoring system is disclosed which controls energization of a motor for an oil well pump jack. A first timer intermittently energizes the pump motor so that fluid flows from the well. A total pumping time clock is energized, as is an oil pumping time clock. If the

An automatic oil well control and monitoring system is disclosed which controls energization of a motor for an oil well pump jack. A first timer intermittently energizes the pump motor so that fluid flows from the well. A total pumping time clock is energized, as is an oil pumping time clock. If the pump begins to pump water, then a probe senses the water rather than oil, and this causes cessation of the oil pumping time clock energization and de-energization of a green indicator lamp. Upon pump-off of the well, a switch sensing fluid flow from the well is opened and the pump motor is de-energized. If no fluid is produced from the well after a time period following initial motor energization, a second timer is actuated to indicate a malfunction condition and a red light is illuminated. Also, the control circuit is continuously energized to maintain a lockout of the pump motor starter. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

대표청구항 ▼

An oil well monitoring device for an oil well having a motor-driven pump controlled by a first control switch, comprising, in combination: a housing adapted to be connected in the fluid flow exit from the pumped well; a fluid flow switch in said housing adapted to be actuated upon fluid flow from sa

An oil well monitoring device for an oil well having a motor-driven pump controlled by a first control switch, comprising, in combination: a housing adapted to be connected in the fluid flow exit from the pumped well; a fluid flow switch in said housing adapted to be actuated upon fluid flow from said well; a resistance probe in said housing to sense the resistance of the pumped fluid relative to the housing wall; and an electrical circuit for said motor; said electrical circuit including first means connected to said fluid flow switch for determining the existence of fluid flow from the well, said first means including hold-in contact means connected across the first control switch to maintain pump actuation despite first control switch opening, a total flow indicator controlled by said first means, second means including said resistance probe for determining the difference between oil flow and water flow and controlling an flow indicator, third means including a time switch to terminate pump motor energization upon an absence of fluid flow from the well despite the closed first control switch, and fourth means to maintain said third means energized despite de-energization of said pump motor.