Method of treating oil and gas wells

Details Method of treating oil and gas wells Method of treating oil and gas wells

E - Fixed Constructions

21

B

E21B 43/26 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2562461

An improved process for optimizing the stimulation of an entire target formation of an oil or gas well during fluid treatment is obtained by dividing the target formation (110) into intermediate zones (120, 130, 140) and initiating stimulation in each intermediate zone (120, 130, 140). Once stimulation is initiated in each intermediate zone (120, 130, 140), ball sealers are used to block the casing perforations (150, 160, 170) at the intermediate zone (120, 130, 140) and divert fluids to another intermediate zone (120, 130, 140). After stimulation has been initiated in all intermediate zones (120, 130, 140), the ball sealers are removed from the perforations (150, 160, 170) and treatment of the entire target formation (110) is conducted.

L'invention concerne une procédé perfectionné pour optimiser la stimulation d'une formation cible complète d'un puits de pétrole ou d'un puits de gaz, lors d'une traitement fluidique. Ce procédé est obtenu par la division de la formation cible (110) en zones intermédiaires (120, 130, 140), et par le lancement d'une stimulation dans chaque zone intermédiaire (120, 130, 140). Une fois la stimulation lancée dans chaque zone intermédiaire (120, 130, 140), des balles d'obturation sont utilisées pour bloquer les perforations de cavité (150, 160, 170) de la zone intermédiaire (120, 130, 140) et pour dévier les fluides vers une autre zone intermédiaire (120, 130, 140). Après le début de la stimulation dans toutes les zones intermédiaires (120, 130, 140), les balles d'obturation sont retirées des perforations (150, 160, 170) et le traitement de la formation cible complète (110) s'effectue.

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