Method of removing solid paraffin-containing deposits from oil well surfaces and compositions therefor

Patent · Tue Sep 19 04:00:00 EDT 1967

OSTI ID:6160406

Willard, Sr, J W

Solid paraffin-containing deposits on surfaces in oil wells are removed by introducing a treating composition containing lecithin into the interior of the well and into intimate contact with the deposit, introducing an aqueous solution of alkali into the well, and thereafter flushing the well with water. In another variant, the well is treated with a composition which preferably contains a water soluble alkali metal silicate, a miscelle-forming rosin acid soap, a partially saponified triglyceride vegetable oil, a triglyceride vegetable oil, alkali, a hydrocarbon solvent, a cyclic alcohol, lecithin and an alkaline earth metal silicate. The invention is concerned not only with the cleaning of the metallic surfaces within the wells, but also with the cleaning of the adjacent producing formations and the flowlines from the well to the storage tanks. (9 claims)

• Assignee: J.B. Oil Treatment Co. Inc.
• Patent Number(s): US 3342264
• OSTI ID: 6160406
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALCOHOLS
ALKALI METALS
ALKALINE EARTH METALS
ALKANES
CLEANING
ELEMENTS
ENERGY SOURCES
ESTERS
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROXY COMPOUNDS
LECITHINS
LIPIDS
METALS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PARAFFIN
PETROLEUM
PHOSPHOLIPIDS
REMOVAL
SILICATES
SILICON COMPOUNDS
SOLVENTS
STIMULATION
WAXES
WELL STIMULATION
WELLS