Top entry electrical transmission safety assembly for submersible pumping

Patent · Tue Dec 09 04:00:00 EST 1986

OSTI ID:7052345

Reed, L T

This patent describes a well head that removably supports a tubing hanger having upper and lower end surfaces in the interior thereof and from which tubing hanger a tubing string depends downwardly in a bore hole to an electrically operated submersible pump that has an electric power receiving cable extending upwardly therefrom in the bore hole. To terminate in a first end at a position adjacent the lower end surface of the tubing hanger a bonnet removably is mounted on the well head. The well head of a top entry electrical transmission safety assembly of multiple part structure is mounted in first and second aligned vertical bores in the tubing hanger and bonnet for supplying electric power to the electric power receiving cable from the electric power supply cable and that may have the portion thereof that extends through the second bore separated from the balance thereof for inspection and maintenance without removing the tubing hanger from the well head. This is the case only after the electric power supply cable has been disconnected from the source of electric power and the bonnet separated from the well head to prevent the possibility of sparking and arcing between the portions of the electrical transmission safety assembly in a potentially hazardous zone containing hydrocarbon fumes.

• Assignee: Midway Fishing Tool Co., Long Beach, CA
• Patent Number(s): US 4627489
• OSTI ID: 7052345
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
020600* -- Petroleum-- Health & Safety
AEROSOLS
CABLES
COLLOIDS
CONDUCTOR DEVICES
CURRENTS
DISPERSIONS
DRILL PIPES
DRILLING EQUIPMENT
ELECTRIC ARCS
ELECTRIC CABLES
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC SPARKS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELONGATION
EQUIPMENT
HYDROCARBONS
INSPECTION
OIL WELLS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PIPES
POWER TRANSMISSION
PUMPING
SAFETY
SOLS
WELLHEADS
WELLS