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Class Information
Number: 166/77.3
Name: Wells > Above ground apparatus > Moving tubing or cable into an existing well > Coiled tubing > Chain injector
Description: Moved coiled tubing wherein the tubing is pushed by a series of links or rings.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431097 |
Apparatus and method for injecting tubing into a well |
Oct. 7, 2008 |
| 7401656 |
Mobile drilling rig with dual carriers |
Jul. 22, 2008 |
| 7383890 |
Universal rig with vertical stand for tubulars |
Jun. 10, 2008 |
| 7380589 |
Subsea coiled tubing injector with pressure compensation |
Jun. 3, 2008 |
| 7331384 |
Stabberless pipe handling system |
Feb. 19, 2008 |
| 7318482 |
Balanced continuous well string injection unit |
Jan. 15, 2008 |
| 7191840 |
Casing running and drilling system |
Mar. 20, 2007 |
| 7185708 |
Coiled tubing/top drive rig and method |
Mar. 6, 2007 |
| 7182140 |
Coiled tubing/top drive rig and method |
Feb. 27, 2007 |
| 7150330 |
Hydraulic circuit and method for operating a gripping device |
Dec. 19, 2006 |
| 7124815 |
Tubing injector for variable diameter tubing |
Oct. 24, 2006 |
| 7090026 |
Apparatus and method for injecting tubing in a well bore |
Aug. 15, 2006 |
| 7051814 |
Subsea coiled tubing injector with pressure compensated roller assembly |
May. 30, 2006 |
| 7032676 |
Well string injection system and method |
Apr. 25, 2006 |
| 7032499 |
Hydraulic circuit and method for operating a sealing device |
Apr. 25, 2006 |
| 6968894 |
Coiled tubing injector apparatus |
Nov. 29, 2005 |
| 6910530 |
Coiled tubing injector apparatus |
Jun. 28, 2005 |
| 6892810 |
Gripper block for coiled tubing injector with variable tubing size capability |
May. 17, 2005 |
| 6892809 |
Coiled tubing injector apparatus |
May. 17, 2005 |
| 6880629 |
Well string injection system with gripper pads |
Apr. 19, 2005 |
| 6843321 |
Intervention device for a subsea well, and method and cable for use with the device |
Jan. 18, 2005 |
| 6763890 |
Modular coiled tubing system for drilling and production platforms |
Jul. 20, 2004 |
| 6758289 |
Method and apparatus for hydrocarbon subterranean recovery |
Jul. 6, 2004 |
| 6719043 |
Coiled tubing injector apparatus |
Apr. 13, 2004 |
| 6691775 |
System for accessing oil wells with compliant guide and coiled tubing |
Feb. 17, 2004 |
| 6663523 |
Auxiliary chain for drawing assembly in drawing machines |
Dec. 16, 2003 |
| 6609566 |
Gripper block assembly for coiled tubing injector head |
Aug. 26, 2003 |
| 6516891 |
Dual string coil tubing injector assembly |
Feb. 11, 2003 |
| 6510900 |
Seal assembly for dual string coil tubing injection and method of use |
Jan. 28, 2003 |
| 6502641 |
Coiled tubing drilling rig |
Jan. 7, 2003 |
| 6425441 |
Gripper block for manipulating coil tubing in a well |
Jul. 30, 2002 |
| 6412560 |
Tubular injector with snubbing jack and oscillator |
Jul. 2, 2002 |
| 6408955 |
Hybrid sectional and coiled tubing drilling rig |
Jun. 25, 2002 |
| 6386290 |
System for accessing oil wells with compliant guide and coiled tubing |
May. 14, 2002 |
| 6347664 |
Coiled tubing injector head |
Feb. 19, 2002 |
| 6332501 |
Linear coiled tubing injector |
Dec. 25, 2001 |
| 6276454 |
Tubing injection systems for oilfield operations |
Aug. 21, 2001 |
| 6230955 |
Multiple contour coiled tubing gripper block |
May. 15, 2001 |
| 6216780 |
Coiled tubing injector with improved traction |
Apr. 17, 2001 |
| 6209634 |
Coiled tubing injector apparatus |
Apr. 3, 2001 |
| 6189609 |
Gripper block for manipulating coil tubing in a well |
Feb. 20, 2001 |
| 6173769 |
Universal carrier for grippers in a coiled tubing injector |
Jan. 16, 2001 |
| 6116345 |
Tubing injection systems for oilfield operations |
Sep. 12, 2000 |
| 6059029 |
Coiled tubing injector |
May. 9, 2000 |
| 6032744 |
Universal pipe and tubing injection apparatus and method |
Mar. 7, 2000 |
| 5975207 |
Method and apparatus for handling drill pipe in a deviated well |
Nov. 2, 1999 |
| 5975203 |
Apparatus and method utilizing a coiled tubing injector for removing or inserting jointed pipe sections |
Nov. 2, 1999 |
| 5918671 |
Skate roller bearing for coiled tubing |
Jul. 6, 1999 |
| 5890534 |
Variable injector |
Apr. 6, 1999 |
| 5875850 |
Universal pipe and tubing injection apparatus and method |
Mar. 2, 1999 |
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