Jointed pipe injector
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United States of America Patent
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Sep 29, 2020
Grant Date -
N/A
app pub date -
Feb 7, 2018
filing date -
Feb 7, 2018
priority date (Note) -
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Abstract
A joined pipe injector for the oil-field industry that is capable of handling strings of jointed pipe. The injector includes gripper block assemblies removably mounted to a pair of looping, sprocket-supported drive chains facing a pipe/tubing passage therebetween. The gripper block assemblies have self-adjusting pipe inserts biased with springs to grip tubing or pipe of constant nominal diameter or pipe having both nominal and secondary diameter including upset joints. An insert guide is provided at the end of the pipe/tubing passage to postpone contact between the pipe inserts and the pipe when the respective gripper block assemblies are moving with curving motion around the sprockets. The injector is designed to operate either independently, or in conjunction with a conventional work-over and/or drill rig.
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