Electrical control system for oil well bailer pump

Patent · Tue Apr 22 00:00:00 EST 1986

OSTI ID:5784102

Senghaas, K A; Senghaas, P

This patent describes an electric control system for an oil well bailer pump having an electric motor for actuating a cable for lowering a bailer into an oil well, filling the bailer, raising the bailer, emptying the bailer, and recycling, the improvement in means sensing the fluid level of the oil in the oil well. The system consists of: a sensing circuit connected to the motor for monitoring the voltage generated by the motor as the motor is driven as a generator as the bailer is lowered into well, and means for determining when the bailer contacts the oil in the well by sensing the drop in the generated voltage from the motor. An electrical control system is also described for an oil well bailer pump having a battery driven direct current electric motor for actuating a cable for lowering a bailer into an oil well, filling the bailer, raising the bailer, emptying the bailer, and recycling which consists of: a winch up circuit for actuating the motor to raise the bailer, an up overshoot circuit for opening the bailer for emptying oil therefrom, the overshoot circuit actuated by the end of the winch up circuit, an up hold circuit for directing the draining oil from the bailer and actuated by the end of the overshoot circuit, a free fall winch down circuit for lowering the bailer towards the surface of the oil in the well, the winch down circuit actuated in response to the up hold circuit, electrical charging circuit connected between the motor and the battery for charging the battery from the motor as the bailer is lowered and rotates the motor, a down overshoot circuit for lowering the bailer a predetermined distance below the oil surface in the well for filling the bailer with oil, the down overshoot circuit actuated in response to the electrical charging circuit, and a down hold circuit for allowing time for the bailer to fill, the down hold circuit actuating the winch up circuit.

• Assignee: Southwest Bailer Pump Co., San Antonio, TX
• Patent Number(s): US 4583916
• OSTI ID: 5784102
• Resource Relation: Patent File Date: Filed date 18 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
PUMPS
CONTROL SYSTEMS
CABLES
DIRECT CURRENT
DRAINAGE
ELECTRIC BATTERIES
ELECTRIC MOTORS
ELECTRIC POTENTIAL
ELECTRONIC CIRCUITS
FLOWMETERS
HOISTING
VOLTMETERS
WINCHES
CURRENTS
ELECTRIC CURRENTS
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
EQUIPMENT
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
MEASURING INSTRUMENTS
METERS
MOTORS
WELLS
020300* - Petroleum- Drilling & Production