The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1999
Filed:
Feb. 25, 1998
Bryan K Payne, Lafayette, LA (US);
L Michael McKee, Alvin, TX (US);
Michael L Smith, Missouri City, TX (US);
Schlumberger Technology Corporation, Houston, TX (US);
Abstract
Apparatus and method for pulling or inserting jointed pipe sections (18) having upset ends (20) within a well utilizing a coiled tubing injector (26). The coiled tubing injector (26) has a pair of opposed endless chains (50, 52) including gripper blocks (58) for gripping the pipe sections (18). An axial gap (G) is provided in chains (50, 52) between adjacent gripper blocks (58) to receive the upset ends (20). To align accurately upset ends (20) with gap (G), a sensing mechanism (100, FIGS. 11 and 12) is provided to sense the location of upset end (20) and a sensing mechanism (110, 112, FIGS. 13 and 14) is provided to sense the location of gap (G). An operator in response to signals from the sensors accurately aligns upset ends (20) with gap (G).