Selective well treating and gravel packing apparatus

Patent · Tue Jun 25 04:00:00 EDT 1974

OSTI ID:6802459

Abney, D L; Williams, R C; Gilbert, H E

The apparatus and method provides the ability to selectively treat a producing zone in a well and to gravel pack an annulus in the well casing outside a screen type liner pipe. A tubing string extending from the surface of the well bore is connected to a packer by a crossover valve. Flow down the tubing string is directed to an annulus below the packer, then inwardly through the screen type liner, then upward through the crossover into the annulus above the packer and then to the earth's surface. Communication from the crossover to the annulus above the packer may be selectively closed to permit a treating pressure to be exerted down the tubing to force a treating fluid into the producing zone. The treating pressure is isolated from the casing above the packer to protect the casing above the packer. (7 claims)

• Assignee: Dresser Industries, Inc.
• Patent Number(s): US 3818986
• OSTI ID: 6802459
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
DESIGN
EQUIPMENT
PACKINGS
WELL CASINGS
WELLS