Gravel packing method and apparatus
Patent
·
OSTI ID:5144058
A method and apparatus are described for forming a gravel pack around a liner after setting a packer, closing the annulus at the upper end of the liner. A clean liquid is circulated down the tubing and through a crossover connection into the annulus surrounding the liner, displacing liquid containing solids suspended therein upward through a wash pipe while preventing flow through slots in the liner. After cleaning the annulus surrounding the liner of liquid having finely divided solids suspended therein, the gravel packing tool is moved and a clean liquid carrying suspended gravel is circulated through the cross-over connection into the annulus surrounding the slotted liner. The clean carrying liquid is either displaced into the formation in which the gravel pack is formed or flows through the screen and passes upward through the wash pipe and annulus above the packer to the wellhead. A gravel packing tool is described which permits control of flow during the gravel packing operation by movement of the tool without requiring resetting of the packer. (4 claims)
- Assignee:
- Gulf Research and Development Co
- Patent Number(s):
- US 3850246
- OSTI ID:
- 5144058
- Country of Publication:
- United States
- Language:
- English
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