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Using colloidal silica as a zonal isolation material and fast path blocker in geological formations

Patent ·
OSTI ID:1632467
A system for blocking fast flow paths in geological formations includes preparing a solution of colloidal silica having a nonviscous phase and a solid gel phase. The solution of colloidal silica is injected into the geological formations while the solution of colloidal silica is in the nonviscous phase. The solution of colloidal silica is directed into the fast flow paths and reaches the solid gel phase in the fast flow paths thereby blocking flow of fluid in the fast paths.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
10,538,990
Application Number:
15/875,183
OSTI ID:
1632467
Country of Publication:
United States
Language:
English

References (1)

Biofilm enhanced geologic sequestration of supercritical CO2 journal January 2009