Temporarily plugging a subterranean reservoir with a self-foaming aqueous solution
Patent
·
OSTI ID:6385256
Portions of a subterranean reservoir are temporarily plugged by injecting an aqueous liquid solution which contains nitrogen gasgenerating reactants, a foaming surfactant and a pH controlling system arranged so that the solution remains relatively unreactive within the well but forms a relatively immobile foam within the pores or other openings within the reservoir formation.
- Assignee:
- Shell Oil Co
- Patent Number(s):
- US 4232741
- OSTI ID:
- 6385256
- Country of Publication:
- United States
- Language:
- English
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