Oil well treatment
Patent
·
OSTI ID:5003752
A well treatment method is described to obtain a higher permeability ratio of oil to water in the producing formation, consolidate sand, prevent clay swelling, and control paraffin deposition. These objects are achieved by introduction into the well tubing and surrounding formation chemicals which react in situ to render the formation relatively more permeable to oil than water, consolidate sand formations, modify the surface of clay to prevent swelling when contacted with water, and control paraffin deposition. An amine and an isocyanate are injected to react in situ in the well formation or well tubing to form urea or polyurea. (14 claims)
- Assignee:
- Armour Industrial Chem. Co.
- Patent Number(s):
- US 3533470
- OSTI ID:
- 5003752
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKANES
AMIDES
CARBONIC ACID DERIVATIVES
CONTROL
DEWAXING
HYDROCARBONS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PERMEABILITY
PIPES
RESERVOIR ROCK
SCALE CONTROL
SEPARATION PROCESSES
STABILIZATION
STIMULATION
UREA
WAXES
WELL COMPLETION
WELL STIMULATION
WELLS
WETTABILITY
020300* -- Petroleum-- Drilling & Production
ALKANES
AMIDES
CARBONIC ACID DERIVATIVES
CONTROL
DEWAXING
HYDROCARBONS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PERMEABILITY
PIPES
RESERVOIR ROCK
SCALE CONTROL
SEPARATION PROCESSES
STABILIZATION
STIMULATION
UREA
WAXES
WELL COMPLETION
WELL STIMULATION
WELLS
WETTABILITY