Method for gravel packing wells
Patent
·
OSTI ID:5665496
This patent describes a method for gravel packing a perforated well which penetrates a formation or reservoir. It comprises placing into a solution a shear-thickening composition in an amount sufficient to form a carrier fluid having a viscosity sufficient to suspend gravel packing sand therein for a time sufficient to pack the well; adding gravel packing sand into the fluid thereby suspending the sand therein; injecting the carrier fluid and sand mixture into the well under conditions sufficient to cause the mixture to shear thicken so as to provide for transportation of the sand to perforations in the well without spreading from the mixture; and directing the mixture into the perforations which diminishes shear forces acting on the mixture thereby causing a reduction in viscosity of the carrier fluid, sand separation from the fluid, improved fluid leak-off into the formation, and uniform gravel packing of the perforations.
- Assignee:
- Mobil Oil Corp., Fairfax, VA (United States)
- Patent Number(s):
- A; US 5076359
- Application Number:
- PPN: US 7-574022
- OSTI ID:
- 5665496
- Country of Publication:
- United States
- Language:
- English
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