Method for formation of subsurface barriers using viscous colloi

Details Method for formation of subsurface barriers using viscous colloi Method for formation of subsurface barriers using viscous colloi

1996-11-07

1998-11-17

Tsay, Frank S.

Wells

Processes

Separate steps of fracturing or attacking formation

405263, E21B 3313

Patent

active

058363904

ABSTRACT:
A method for formation of subsurface barriers using viscous liquids where a viscous liquid solidifies at a controlled rate after injection into soil and forms impermeable isolation of the material enclosed within the subsurface barriers. The viscous liquid is selected from the group consisting of polybutenes, polysilotanes, colloidal silica and modified colloidal silica of which solidification is controlled by gelling, cooling or cross-linking. Solidification timing is controlled by dilution, addition of brines, coating with alumina, stabilization with various agents and by temperature.

REFERENCES:
patent: 3603099 (1971-09-01), Zakiewicz
patent: 3638433 (1972-02-01), Sherard
patent: 3865600 (1975-02-01), Pearson et al.
patent: 4072019 (1978-02-01), Pearson
patent: 4543016 (1985-09-01), Tallard
patent: 5403125 (1995-04-01), Andersen

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