Plug for use in hot oil treatment of wells having paraffin deposits and method of use thereof

Patent · Tue Apr 07 00:00:00 EDT 1987

OSTI ID:6570602

Spitzer, W R

A plug is described for use in the hot oil process of reducing paraffin deposits inside a production tubing string within a casing in a well bore in the earth comprising; a cylindrical body adapted to be supported on a tubing joint connection of the production tubing string within the casing, the cylindrical body having an outer diameter sufficiently smaller than the drift diameter of the casing in which it is to be installed to provide an annulus space of a size operable to allow passage of hot oil therethrough at a predetermined rate to provide sufficient time of contact between the hot oil and the exterior surface of the tubing string for maximum heat transfer therebetween, and pressure relief means of the hot oil plug for allowing passage of pressurized gases from the annular space below the plug to the annular space above the plug when installed in a well.

• Assignee: NOV; NOV-87-057054; EDB-87-092690
• Patent Number(s): US 4655285
• OSTI ID: 6570602
• Resource Relation: Patent File Date: Filed date 6 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
DEWAXING
OIL WELLS
ANNULAR SPACE
CLOSURES
DRILL BITS
DRILL PIPES
GAS FLOW
HEAT TRANSFER
OILS
PARAFFIN
PRECIPITATION
PRESSURE CONTROL
PRESSURIZING
PUMPING
VALVES
WELL CASINGS
ALKANES
CONFIGURATION
CONTROL
CONTROL EQUIPMENT
DRILLING EQUIPMENT
ENERGY TRANSFER
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
HYDROCARBONS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PIPES
SEPARATION PROCESSES
SPACE
WAXES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing