Circulation reversing tool
A circulation tool is described for changing the path of circulation of drilling fluid at the drill bit without removing the drill bit from the borehole annulus comprising: (a) a substantially hollow cylindrical body having a chamber including a first port disposed intermediate to a first portion having internal splines and a second portion having at least one by-pass passage extending axially from the chamber to a second port and at least one through passage extending from the chamber to the end of the substantially hollow cylindrical body; (b) a telescoping member having a first end and a second end and a section including splines for engaging the internal splines of the substantially hollow cylindrical body; (c) a diverter mounted to the second end of the telescoping member; (d) means for rotatably positioning the diverter with respect to at least one by-pass passage and at least one through passage; and (e) a seal rotatably mounted on the substantially hollow cylindrical body and disposed intermediate the first port and the second port.
- Assignee:
- J and F Oil Tools, Inc., Beaumount, TX
- Patent Number(s):
- US 4657092
- OSTI ID:
- 6503432
- 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
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOREHOLES
CAVITIES
CIRCULATING SYSTEMS
CONTROL EQUIPMENT
CYLINDERS
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
EQUIPMENT
FLOW REGULATORS
FLUIDS
MOTION
NATURAL GAS WELLS
OIL WELLS
POSITIONING
ROTATION
WELL DRILLING
WELLS