Methods for stimulating oil or gas production

Details Methods for stimulating oil or gas production Methods for stimulating oil or gas production

E - Fixed Constructions

21

B

E21B 43/267 (2006.01) C09K 8/528 (2006.01) C09K 8/86 (2006.01) E21B 37/06 (2006.01)

Patent

CA 2685607

A method for treating a portion of a subterranean formation or a proppant pack is provided. In general, the method comprises the steps of: (A) forming or providing a treatment fluid comprising: (i) water; (ii) a chelating agent capable of forming a heterocyclic ring that contains a metal ion attached to at least two nonmetal ions; and (iii) a viscosity-increasing agent; and (B) introducing the treatment fluid into the wellbore under sufficient pressure to force the treatment fluid into the matrix of the formation or the proppant pack.

L'invention porte sur un procédé pour traiter une partie d'une formation souterraine ou un remblai de soutènement. En général, le procédé consiste à (A) former ou se procurer un fluide de traitement comprenant : (i) de l'eau ; (ii) un agent chélatant pouvant former un noyau hétérocyclique qui contient un ion métallique fixé à au moins deux ions non-métalliques ; et (iii) un agent augmentant la viscosité. Et (B) à introduire le fluide de traitement dans le puits de forage sous une pression suffisante pour forcer le fluide de traitement dans la matrice de la formation ou du remblai de soutènement.

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