Title:
COMPOSITION FOR USE IN SEALING A POROUS SUBTERRANEAN FORMATION, AND METHODS OF MAKING AND USING
Document Type and Number:
WIPO Patent Application WO2003048526
Kind Code:
A3
Abstract:
A composition for sealing porous subterranean formations comprises a mixture of a water-swellable clay and a water insoluble, water absorbent, water-swellable polymer, wherein the mixture is coated with a material that is resistant to penetration by water. The water penetration resistant material helps the delay the onset of swelling of the clay and polymer until it reaches the formations intended for sealing. Mixing the clay with the water-swellable polymer prior to coating assists in coating of the water-swellable polymer with the water penetration resistant material. The coated mixture can be suspended in an aqueous liquid, and then pumped into a subterranean cavity to seal porous formation therein.
Inventors:
MYERS KENT R
BROWN RICHARD K
KRAUSE STEWART W
PAREKH SHOBHA B
STICHMAN ROBERT W
BROWN RICHARD K
KRAUSE STEWART W
PAREKH SHOBHA B
STICHMAN ROBERT W
Application Number:
PCT/US2002/038478
Publication Date:
February 19, 2004
Filing Date:
December 03, 2002
Export Citation:
Assignee:
WYO BEN INC (US)
International Classes:
C04B40/06; C09K8/44; C09K8/46; C09K8/504; C09K8/508; E21B21/00; (IPC1-7): C09K7/00; B32B15/02; C09K7/02
Foreign References:
| US6105674A | 2000-08-22 | |||
| US4664816A | 1987-05-12 | |||
| US2856354A | 1958-10-14 |
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