Real-time digital pulsed neutron logging from LIVE digital slickline services
Schlumberger recommended using LIVE PL digital production logging services to run DPN sigma logging to provide real-time reservoir saturation monitoring without having to switch to a wireline unit. The dual-burst, high-output pulsed neutron generator (PNG) of DPN service is applied with adaptive timing to eliminate the need for environmental correction. The resulting high-quality sigma log supports the determination of water/oil/gas contacts, identification of the gas contact prior to perforating, and time-lapse reservoir monitoring.
All LIVE digital slickline services are performed with standard slickline unit and pressure control equipment. The integral coating of the cable enables two-way digital communication during deployment with accurate depth control. This compatibility enables using the same slickline unit and crew for both intervention and production logging to leverage the operational simplicity, efficiency, and economy while providing the confidence of real-time logging data.
Informed, safer operations that save at least one day per well
Not having to switch from slickline to wireline units—and potentially back to slickline—saved one day or more of operating time per well while enabling better-informed interventions with greater operational safety from simplified pressure control and reduced fishing risk.