| Patent Number |
Title Of Patent |
Date Issued |
| 7367403 |
Top feed of control lines to table-elevated spider |
May 6, 2008 |
| A method and apparatus are provided for installing control lines and pipe into a well. The pipe-holding spider that is normally mounted on the rig floor is supported by a table elevated above the rig floor. Supporting the spider on an elevated table provides personnel with access to a |
| 6488323 |
Apparatus for gripping oilfield tubulars without causing damage to such tubulars |
December 3, 2002 |
| An apparatus for gripping tubular members in a single or multi-string arrangement about their outer diameter without causing surface damage or structural deformation to the tubular members, so that they may be axially rotated or secured against axial rotation. A generally cylindrical |
| 5848647 |
Pipe gripping apparatus |
December 15, 1998 |
| A pipe gripping apparatus for angularly adapting to misaligned pipe on one or more pipe strings, said apparatus comprising: a housing having internal, opposing, downwardly curved surfaces therein and forming a longitudinal opening for passing a portion of at least one tubing string t |
| 5842390 |
Dual string backup tong |
December 1, 1998 |
| A backup tong having an inner throat sized to accommodate a second pipe string while a first pipe string is held within the jaws of the tong is disclosed. The inventive backup tong facilitates operations on dual pipe strings by allowing the tong to grip not only the closer of two pipe |
