In February 2015, a 2 1/8” WellLIT was mobilized to the southern part of Saudi Arabia with the objective to access the highly deviated, slim hole motherbore and laterals. The WellLIT was run in hole, successfully deploying the PLT into the lateral to a depth of 8,230 ft (2,509 m) for data acquisition. Then it was pulled back out to the mainbore where CT pushed the toolstring as deep as possible in the motherbore, which was logged from 8,487 ft (2,587 m).
Shortly after, another well in the same field with a similar profile was logged. The lateral was accessed and logged from 7,690 ft (2,344 m) before logging the motherbore.
During both operations the WellLIT delivered just what it was designed to do. It provided Saudi Aramco an opportunity to evaluate each lateral, gaining more insight and information about the reservoir and lateral section. Subsequently this would enable them to enhance well or reservoir production if they so choose.
The ability to re-enter laterals effectively and on-demand with coiled tubing provides tremendous increases in efficiency. The WellLIT makes accessing laterals possible and provides Saudi Aramco improved data from production logging jobs, leading to enhanced productivity. Running on e-line allows operators almost anywhere in the world to mobilize quickly with smaller sets of equipment and fewer personnel.
Following on these two wells, a further four wells have been successfully logged in Saudi Arabia utilizing this novel technology.