Mechanically actuated subsurface injection tool
This patent describes a subterranean well having a casing traversing a production zone, the casing and production zone having vertically spaced perforations, apparatus for chemically treating selected portions of the production zone comprising: a tubing supported valve having a tubular body; a radial port in the tubular body providing communication between the tubing bore and the casing annulus; port closing means slidably and sealably mounted in the valve body for movement between a normal closed position overlapping the radial port and an open position axially spaced from the port; a valve actuating sleeve sealably and rotatably mounted in the upper end of the valve body; means on one end of the valve actuating sleeve for securement to a tubing string; packer means comprising a tubular packer body assembly; a hollow mandrel telescopically inserted in the tubular packer body assembly; a plurality of radially expandable and retractable packing elements mounted in axially spaced relationship on the tubular packer body assembly. Each of the elements comprising means for sealing the annular area between the tubing string and the well bore upon radial expansion thereof; means for expanding and retracting the packer body assembly by axial movement of the tubing string; a radial injection path communicable between the mandrel bore and the exterior of the packer body assembly, the radial injection path being located between two packing elements; and seal means for sealing the mandrel bore below the injection path, whereby the packer means may be set by axial manipulation of the tubing string with the packing elements straddling a selected vertical group of perforations.
- Assignee:
- Baker Oil Tools, Inc., Orange, CA
- Patent Number(s):
- US 4722400
- OSTI ID:
- 5287975
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CEMENTING
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUIDS
JOINTS
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PACKINGS
PERFORATION
SLEEVES
THREADED JOINTS
TOOLS
VALVES
WELL CASINGS
WELL COMPLETION
WELL INJECTION EQUIPMENT
WELLS
WORKING FLUIDS