E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/13 (2006.01) E21B 33/14 (2006.01) C04B 28/04 (2006.01)
Patent
CA 2553897
The present invention relates to subterranean cementing operations, and more particularly, to methods of cementing in subterranean formations using cement compositions that autogenously cure voids that may form in such cement compositions. In one embodiment, the present invention provides a method of cementing in a subterranean formation penetrated by a well bore comprising the steps of: placing a cement composition into the well bore, wherein the cement composition comprises a first cementitious component having a first set time and a second cementitious component having a second set time that is delayed relative to the first set time of the first cementitious component; allowing the first cementïtious component to at least partially set; and allowing the second cementitious component to set after a delay period.
L'invention concerne des opérations de cimentage souterrain, et en particulier, des méthodes de cimentage dans des formations souterraines, faisant appel à des compositions de ciment permettant d'effectuer la cure du ciment de manière autogène pour des vides pouvant se former dans de telles compositions de ciment. Dans un mode de réalisation de l'invention, l'invention concerne une méthode de cimentage d'une formation souterraine percée d'un puits de forage. Cette méthode comprend les étapes consistant à: placer une composition de ciment dans le puits de forage, la composition de ciment comprenant un premier composant cimenteux présentant une première durée de prise et un second composant cimenteux présentant une seconde durée de prise qui est retardée par rapport à la première durée de prise du premier composant cimenteux; ceci permet au premier composant cimenteux de prendre au moins partiellement; et ceci permet au second composant cimenteux de prendre après un certain délai.
Roddy Craig W.
Todd Bradley L.
Halliburton Energy Services Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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