Patent ID: 6776238
Filing Date: 2004-08-17
Classification: E21B

Abstract:
A single trip method for fracturing multiple formations traversed by a wellbore comprising the steps of:locating a first screen assembly having a plurality of first valves within the wellbore proximate a first formation; locating a second screen assembly having a plurality of second valves within the wellbore proximate a second formation; operably positioning a service tool proximate the first formation; injecting a first fracture treatment fluid through the service tool into the interior of the first screen assembly; progressively operating the first valves to establish fluid communication from the interior to the exterior of the first screen assembly to progressively fracture the first formation; repositioning the service tool proximate the second formation; injecting a second fracture treatment fluid into the interior of the second screen assembly; and progressively operating the second valves to establish fluid communication from the interior to the exterior of the second screen assembly to progressively fracture the second formation.