Rod coupling for oil well sucker rods and the like
Patent
·
OSTI ID:5434081
A coupling is described for joining solid reciprocating sucker rods to form a rod string in a well pump or the like comprising a unitary metal sleeve having an axial threaded bore and an irregular outer surface, and a homogeneous and non-fibrous coating on the sleeve over the outer surface providing an externally substantially cylindrical coupling, the coating comprising a flexible and abrasive resistant thermoplastic hydrourethane polymer formed on the irregular outer surface of the sleeve while in the molten state.
- Assignee:
- NOV; EDB-86-156197; NOV-85-018906
- Patent Number(s):
- US 4602807
- OSTI ID:
- 5434081
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CORROSION RESISTANCE
DEPOSITION
DRILL PIPES
DRILLING EQUIPMENT
ELEMENTS
EQUIPMENT
FABRICATION
FLEXIBILITY
JOINING
JOINTS
MATERIALS
MECHANICAL PROPERTIES
METALS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PIPES
PLASTICS
POLYMERS
PUMPS
ROD PUMPS
SLEEVES
SURFACE COATING
SURFACES
SYNTHETIC MATERIALS
TENSILE PROPERTIES
THERMOPLASTICS
THREADED JOINTS
URETHANE
WELLS
020300* -- Petroleum-- Drilling & Production
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CORROSION RESISTANCE
DEPOSITION
DRILL PIPES
DRILLING EQUIPMENT
ELEMENTS
EQUIPMENT
FABRICATION
FLEXIBILITY
JOINING
JOINTS
MATERIALS
MECHANICAL PROPERTIES
METALS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PIPES
PLASTICS
POLYMERS
PUMPS
ROD PUMPS
SLEEVES
SURFACE COATING
SURFACES
SYNTHETIC MATERIALS
TENSILE PROPERTIES
THERMOPLASTICS
THREADED JOINTS
URETHANE
WELLS