Diverting technique to stage fracturing treatments in horizontal wellbores
This patent describes a method for fracturing a formation containing a horizontal wellbore. It comprises perforating a horizontal wellbore at a desired first interval at a distance farthest from an angle of deviation from vertical of the wellbore thereby causing the wellbore to be in fluid communication with the formation; fracturing hydraulically the formation at the first interval; injecting a solidifiable gel containing a gel breaker into the wellbore witch enters the first interval; displacing with a wiper plug the solidifiable gel so as to force the solidifiable gel into the first interval and contain the gel in the wellbore in an area adjacent to the perforations; allowing the solidifiable gel to remain in the formation and in the wellbore for a time sufficient to form a solid gel in the first interval and a solid gel plug in the wellbore which precludes fluid entry into the wellbore adjacent the first interval; while the solid gel plug remains in the wellbore, perforating another section of the wellbore so as to cause fluid communication between a second interval of the formation and the wellbore; and fracturing hydraulically the formation through perforations so as to cause a second interval to be in fluid communication with the wellbore.
- Assignee:
- Mobil Oil Corp., New York, NY (USA)
- Patent Number(s):
- US 4951751; A
- Application Number:
- PPN: US s 7-379757
- OSTI ID:
- 6405552
- Country of Publication:
- United States
- Language:
- English
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