External axis parallel alignment system

Patent · Tue May 31 04:00:00 EDT 1988

OSTI ID:7134103

Perryman, J P

An apparatus for vertically aligning a second conduit with a substantially vertically disposed first conduit wherein at least a portion of the first conduit is disposed within a borehole such that a lower end of the second conduit can be connected to an upper end of the first conduit at a work floor of a rig is described comprising: signal generating means for producing a signal representative of a vertical plumb line reference when the second conduit is substantially vertically disposed; first support means for supporting the signal generating means; first connector means for connecting the first support means to the second conduit; target means for receiving the signal representative of the vertical plumb line reference from the signal generating means and for indicating the vertical alignment of the second conduit with the first conduit when the lower end of the second conduit is substantially abutted with the upper end of the first conduit; second support means for supporting the target means, and second connector means for connecting the second support means to one of the first and second conduits.

• Assignee: NOV; NOV-88-023525; EDB-88-153266
• Patent Number(s): US 4747454
• OSTI ID: 7134103
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ALIGNMENT
DATA TRANSMISSION SYSTEMS
DRILL PIPES
DRILLING EQUIPMENT
DRILLING RIGS
DUCTS
EQUIPMENT
INSTALLATION
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PIPES
POSITIONING
SUPPORTS
TOOLS
WELLS