E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/138 (2006.01) C09K 8/508 (2006.01)
Patent
CA 2615475
Methods of isolating particular zones within a subterranean formation utilizing self-degrading cement compositions are provided. An example of a method of the present invention is a method that includes: providing a self- degrading cement composition that includes a degradable material, an acid source, a base source, and a water source; placing the self-degrading cement composition in a zone within a subterranean formation; and allowing the self- degrading cement composition to set to form a solid mass that is capable of isolating the zone from a well bore penetrating the zone or from another zone.
L'invention concerne des procédés d'isolation de zones spécifiques dans une formation souterraine utilisant des compositions de ciment autodégradable. Un exemple du procédé selon la présente invention comporte les étapes suivantes : se procurer une composition de ciment autodégradable comprenant un matériau dégradable, une source d'acide, une source de base, et une source d'eau ; placer la composition de ciment autodégradable dans une zone d'une formation souterraine ; laisser prendre la composition de ciment autodégradable de manière à former une masse solide capable d'isoler ladite zone d'un puit traversant cette zone, ou d'une autre zone.
Santra Ashok K.
Savery Mark R.
Todd Bradley L.
Halliburton Energy Services Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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