Downhole tool with replaceable tool sleeve sections

Patent · Tue Oct 29 04:00:00 EST 1985

OSTI ID:5945140

Case, W A

A downhole tool for insertion in a drill stem includes elongated cylindrical half sleeve tool sections adapted to be non-rotatably supported on an elongated cylindrical body. The tool sections are mountable on and removable from the body without disconnecting either end of the tool from a drill stem. The half sleeve tool sections are provided with tapered axially extending flanges on their opposite ends which fit in corresponding tapered recesses formed on the tool body and the tool sections are retained on the body by a locknut threadedly engaged with the body and engageable with an axially movable retaining collar. The tool sections may be drivably engaged with axial keys formed on the body or the tool sections may be formed with flat surfaces on the sleeve inner sides cooperable with complementary flat surfaces formed on a reduced diameter portion of the body around which the tool sections are mounted.

• Assignee: IFI; EDB-86-085031
• Patent Number(s): US 4549613
• OSTI ID: 5945140
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BOREHOLES
CAVITIES
CONFIGURATION
CYLINDRICAL CONFIGURATION
DESIGN
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
EXPANSION
MECHANICAL STRUCTURES
OPERATION
PERFORMANCE
PIPES
ROTARY DRILLING
ROTARY DRILLS
SLEEVES
SUPPORTS
WELL DRILLING