Method for sealing leaks in production packers

Patent · Fri May 07 04:00:00 EDT 1965

OSTI ID:6283240

Peters, B A; Whitaker, W W; Holland, W E

A method is given for sealing leaks in the tubing strings and production packers in oil and gas wells. The method involves surface injection into the tubing string of a rubber ball or similar piston-like member and a sealant fluid containing graded plastic particles having a specific gravity less than that of water. A second piston-like member and a later-injected fluid are used to force the sealant fluid through the tubing into the space beneath the production packer. The second piston- like member and excess fluid are subsequently removed from the tubing string. This provides a simple and inexpensive way of establishing a reliable seal on the high pressure side of a production packer, permits the concomitant sealing of any leaks in the tubing string, and does not preclude the subsequent removal of both the tubing and packer if desired. (8 claims)

• Assignee: Esso Production Research Co.
• Patent Number(s): US 3381748
• OSTI ID: 6283240
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ENERGY SOURCES
FOSSIL FUELS
FUELS
LEAKS
MAINTENANCE
MATERIALS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
RESINS
SEALING MATERIALS
SEALS
SYNTHETIC MATERIALS
TUBES
WELLS