Welltec has recently completed the first logging job with the newly developed DC electronics for the Well Tractor.
An operator needed to perform a casing inspection log for scale build-up across the perforations of a high temperature, cased hole, horizontal well, in the Haynesville Shale. They selected Welltec for the job due to our existing, AC e-line capabilities. During job planning it was suggested to try the new HT, DC Well Tractor, to which the client agreed.
Prior to load out a thorough System Integration Test was successfully conducted to test the compatibility with the e-line provider’s equipment and cable.
The toolstring was run in hole with the Well Tractor and logging tool to the kick-off point at about 11,581 ft. (3,530 m), at which point the operator began pumping well fluid at ~1 bpm to help keep the temperature within limits. The Well Tractor was engaged and conveyed the toolstring ~1000 ft. (~300 m) further before activating the ultrasonic tool for the caliper and bond information required around the perforations. A temperature strip in the electronics’ housing recorded the maximum temperature reached in the well, 335°F (160°C).
The Well Tractor and DC electronics handled the high temperatures with no complications, proving its applicability to extreme environments. The operator achieved their objective and acquired data across the perforations to gain a better understanding of the downhole conditions and the scale buildup levels.
To read more about this operation, please see the full case story, or read more on Welltec’s Conveyance Solutions in our brochure.