TuffTRAC iX Tractor Conveys Pulsar Spectroscopy Service over 9,500 m to Log Deviated 3½-in Tubing, Malaysia

Logging a slim cased well

An operator offshore Malaysia needed to log a cased well in search of additional producible zones. However, the deep, slim well at a 79° deviation presented many logging and conveyance challenges, with its 3½-in completion incorporating five gas lift mandrels.

Conveying 1⅞-in logging tool with rugged 2⅛-in TuffTRAC iX tractor

Schlumberger proposed deploying Pulsar multifunction spectroscopy service to obtain complete cased hole formation evaluation from a single run of one tool.

To riglessly convey Pulsar service, the new 2⅛-in TuffTRAC iX tractor was the ideal choice. The tractor’s four drive sections are independently operated to achieve incomparable agility. Real-time monitoring of wheel contact is integrated into the tractor’s active traction control. This unprecedented maneuverability enabled the slim TuffTRAC iX tractor to effortlessly negotiate each gas lift mandrel in the deviated well by sequentially closing the drives as they passed that restriction. Having to close only one drive section at a time maximized available power when navigating through the restriction.

Gaining incremental production through logging insight

The TuffTRAC iX tractor performed flawlessly, tractoring 9,519 m continuously over the 5 days of the nonstop logging operation. No HSE or service quality incidents occurred during the deployment.

From the comprehensive logs returned by Pulsar service, the operator was able to identify and capture incremental production.