Process for protecting ends of oil field tubular products
The method of protecting threaded, cut or machined ends of oil field tubular elongated hollow cylindrical articles or the like against rust, pitting, moisture induced corrosion damage and adverse weather condition during outdoor storage thereof preparatory to field use, wherein the elongated tubular cylindrical articles each have machined end surface portions forming threaded coupling ends or the like, is described comprising coating machined end portions of each of the tubular articles with a grease-like protective compound over all of the machined surface portions thereof, enshrouding the grease-coated machine surface portions thereof at each end in a respective shrinkable plastic film bag having a closed end bottom wall portion and side walls joined thereto throughout the perimeter of the bottom wall portion. The side walls extend for a length axially of the tubular articles greater than the axial distance spanned by the machined and coated surfaces and to extend inwardly beyond the machined surfaces onto uncoated adjoining exterior cylindrical surface portions of the tubular article. Heat shrinking the shrinkable plastic film bag at each end of the tubular article in situ forms an air-tight shrink wrap film enclosure enveloping the machined and coated surface portions in substantially conforming relation to the exterior surface configuration of the respective enshrouded end portion of the tubular article and tightly embracing in moisture sealing relation the exterior cylindrical surface portions thereof.
- Assignee:
- Asgard Corp., New Iberia, LA
- Patent Number(s):
- US 4757595
- OSTI ID:
- 6884729
- Resource Relation:
- Patent File Date: Filed date 2 Mar 1987
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonrotating, self-centering anchor assembly for anchoring a bolt in a borehole
Nonrotating, self-centering anchor assembly for anchoring a bolt in a borehole
Related Subjects
36 MATERIALS SCIENCE
DRILL PIPES
PROTECTIVE COATINGS
OIL WELLS
CORROSION PROTECTION
DESIGN
EQUIPMENT PROTECTION DEVICES
FABRICATION
FIELD PRODUCTION EQUIPMENT
LUBRICATION
PIPE JOINTS
PLASTICS
SEALS
SURFACE COATING
THREADED JOINTS
COATINGS
DEPOSITION
DRILLING EQUIPMENT
EQUIPMENT
JOINTS
MATERIALS
PETROCHEMICALS
PETROLEUM PRODUCTS
PIPES
SYNTHETIC MATERIALS
WELLS
020300* - Petroleum- Drilling & Production
360105 - Metals & Alloys- Corrosion & Erosion