Compositions and methods for treating subterranean...

E - Fixed Constructions – 21 – B

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E21B 43/25 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2557459

The present invention relates to gelled fluids and methods for using liquefied petroleum gas in subterranean operations. More particularly, the present invention relates to servicing fluids that comprise gelled liquefied petroleum gas or servicing fluids that comprise a conventional gelled hydrocarbon fluid with liquefied petroleum gas and methods of using such servicing fluids in subterranean formations. One embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing a gelled LPG fluid comprising liquefied petroleurn gas and a gelling agent; and placing the gelled LPG fluid into the subterranean formation. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing a combined LPG servicing fluid comprising liquefied petroleum gas and a conventional hydrocarbon servicing fluid; and placing the combined LPG servicing fluid into the subterranean formation.

Cette invention se rapporte à des fluides gélifiés et à des procédés d'utilisation de gaz de pétrole liquéfié dans des opérations souterraines. Cette invention concerne plus particulièrement des fluides d'entretien qui comprennent du gaz de pétrole liquéfié gélifié ou des fluides d'entretien qui comprennent un hydrocarbure fluide gélifié conventionnel avec du gaz de pétrole liquéfié, ainsi que des procédés d'utilisation de ces fluides d'entretien dans des formations souterraines. Un mode de réalisation de cette invention concerne un procédé de traitement d'une formation souterraine consistant à former un fluide de GPL gélifié comprenant du gaz de pétrole liquéfié et un agent gélifiant; et à placer ce fluide GPL gélifié dans la formation souterraine. Un autre mode de réalisation de cette invention concerne un procédé de traitement d'une formation souterraine consistant à former un fluide d'entretien GPL combiné comprenant du gaz de pétrole liquéfié et un hydrocarbure fluide d'entretien conventionnel; et à placer le fluide d'entretien GPL combiné dans la formation souterraine.

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