An understanding of the reservoir is essential for its optimal development. Reservoirs that contain heterogeneous carbonates and shaly sands pose formation evaluation challenges for conventional measurements.

To provide a more complete, real-time evaluation of these complex reservoirs, Schlumberger engineers have developed logging-while-drilling (LWD) technology with enhanced measurement capabilities. Measurement acquisition while-drilling minimizes rig time and facilitates real-time decisions related to reserves, completions, and wellbore trajectory changes to optimize reservoir access and production. 

By providing lithology-independent porosity, pore-size distribution, continuous permeability, and direct hydrocarbon detection, the proVISION Plus magnetic resonance-while-drilling service makes real-time producibility assessments possible in complex reservoirs. The service complements other real-time LWD data, such as the suite of measurements from the NeoScope sourceless formation evaluation-while-drilling service, to provide advanced petrophysical evaluation.

An industry article in the Journal of Petroleum Technology “Magnetic Resonance-While-Drilling System Improves Understanding of Complex Reservoirs” highlights the design enhancements that have enabled the service to be successful in a wide range of drilling conditions and provide lithology-independent porosity, pore-size distribution, continuous permeability, and direct hydrocarbon detection. Case studies from West Africa and South America illustrate the service’s global reach and demonstrate how it complements other real-time LWD data to deliver sophisticated formation evaluation including identification of bypassed pay zones and accurate producibility determination.

Read the full article here.

Learn more about other innovative technologies in the Schlumberger library of industry articles.