Method of inhibiting gravel pack and formation sandstone dissolution during steam injection

Patent · Tue Apr 06 04:00:00 EST 1982

OSTI ID:5238534

Swan, P G

A method is claimed of inhibiting dissolution of the gravel pack and/or erosion of the formation standstone in a well bore subject to water or steam injection. The method includes the addition of a material to the surface of the gravel or formation which is capable of adhering to such surfaces and forming a tenacious water-repellent film. The film is monomolecular and hydrophobic. The active ingredient in the chemical treatment is commercial soybean lecithin. The material is added to the surfaces by injecting a liquid solution of the chemical down the annulus of the well during steaming and/or physically precoating the gravel pack by soaking it in a liquid solution of the chemical.

• Assignee: Sigma Chemical Co
• Patent Number(s): US 4323124
• OSTI ID: 5238534
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BOREHOLES
CAVITIES
COATINGS
DISSOLUTION
ENHANCED RECOVERY
ESTERS
FILMS
FLUID INJECTION
LECITHINS
LIPIDS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHOLIPIDS
RECOVERY
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STEAM INJECTION
STIMULATION
THERMAL RECOVERY
WATERFLOODING
WELL CASINGS
WELL STIMULATION
WELLS