Wells – Processes – Providing porous mass of adhered filter material in well
Patent
1989-08-10
1990-05-01
Suchfield, George A.
Wells
Processes
Providing porous mass of adhered filter material in well
166295, 166300, 405264, 523130, E21B 33138, E21B 4304
Patent
active
049210475
ABSTRACT:
A mixture of an epoxy material and two hardeners is placed in a subsurface zone in which it is desired to form an impermeable zone, and the epoxy is thereafter allowed to harden. The epoxy material and hardeners are characterized inthat: (1) each hardener has a different activation temperature; (2) the amount of each hardener in the mixture is less than that required to totally react the epoxy material; (3) the epoxy material has a low viscosity at subsurface conditions of temperature and pressure; (4) the epoxy material is substantially immiscible with any fluids which are present in the subsurface area; and (5) the hardening time of the epoxy material is of short duration at subsurface conditions of temperature and pressure.
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patent: 3759914 (1973-09-01), Simms et al.
patent: 4042031 (1977-08-01), Knapp
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patent: 4074760 (1978-02-01), Copeland et al.
patent: 4465542 (1984-08-01), Furihata
patent: 4665988 (1987-05-01), Murphey et al.
Jurinak Jeff J.
Summers Laine E.
Conoco Inc.
Suchfield George A.
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