Improving Well Completion Efficiency Though the Implementation of Jointed Pipe Injector Technology

Abstract

Currently, jointed pipe completions on live wells are performed by either a workover rig with a rig assist snubbing jack or a stand-alone snubbing jack. These technologies require extensive training and operator input to convey tubing in and out of the wellbore. Conventional snubbing jacks run the risk of losing control of the string when they are transferring load between travelling and stationary slips. The main objective of the Jointed Pipe Injector Technology is to provide a safer alternative by reducing operator input and reducing the risk of losing control of the string while reducing the time it takes to move tubular strings in and out of the wellbore under pressure. Applying a jointed pipe injector into the well completions package where a typical jack would function removes the transfer of load because it maintains constant grip on the tubing, much like a coiled tubing injector. By integrating additional sensors into this package make-up and break-out procedures may be carried out remotely, further reducing operator intervention for remedial operations. Through the recent deployment of a rig-assist jointed pipe injector in the DJ Basin, the oilfield service companies have been able to reduce operator training time from months to weeks. Operator input has been reduced by over 94% compared to a conventional rig assist snubbing unit. Tubulars can be tripped in or out of the well at twice the speed of the conventional rig assist jack. The main injector control has been located remotely, reducing the number of personnel at risk on the work floor by 33%. The deployment of the jointed pipe injector in well completion applications leads to levels of automation, control, and mechanization typically seen in modern drilling packages.