Parameter telemetering from the bottom of a deep borehole

Patent · Tue Nov 29 04:00:00 EST 1988

OSTI ID:6484149

Farque, C A

This patent describes an apparatus for pumping a liquid from a borehole in the earth, including at least a string of tubing from the surface to a selected depth in the borehole, electric motor means and pump means supported at the bottom end of the tubing, three phase alternating current electrical power supply means at the surface, and a multiple conductor cable, the cable connected to the power supply means at the surface end, and to the motor means at the bottom end of the cable; apparatus for use in combination with the multiple conductor cable to measure, in the borehole, at least one well parameter indicative of a condition contiguous to the motor and pump means and transmitting to the surface a signal representative of the at least one well parameter, comprising: (a) means at the surface for generating an intermediate frequency signal independent of the three phase alternating current electrical power supply means; (b) electrical coupling means at the surface for connecting the intermediate frequency signal to a circuit comprised of one conductor in the multiple conductor cable and a ground conductor means which is independent of the alternating current electrical power supply means; (c) downhole instrument package means positioned in the borehole and connected to the circuit.

• Assignee: Oil Dynamics, Inc., Tulsa, OK
• Patent Number(s): US 4788545
• OSTI ID: 6484149
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALTERNATING CURRENT
CABLES
COMMUNICATIONS
CONDUCTOR DEVICES
CURRENTS
DATA ACQUISITION SYSTEMS
DATA TRANSMISSION
DATA TRANSMISSION SYSTEMS
DRILL PIPES
DRILLING EQUIPMENT
ELECTRIC CABLES
ELECTRIC CURRENTS
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
EXPLORATION
EXPLORATORY WELLS
FIELD PRODUCTION EQUIPMENT
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MOTORS
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PIPES
PUMPS
RESERVOIR ROCK
RESOURCES
TELEMETRY
WELL LOGGING
WELL LOGGING EQUIPMENT
WELL RECOVERY EQUIPMENT
WELLS