PBE: Azeem Chohan, Tom Bradley and NMR

Azeem Cohan and co-author Tom Bradley presented at the 2026 SPWLA symposium. The experts from Baker Hughes presented a case study focused on characterizing chalk reservoirs in the Netherlands using NMR technology and core analysis. The researchers demonstrated how 2D NMR effectively distinguishes native hydrocarbons from mud filtrate, a task often complicated by fluid flushing during drilling. By integrating laboratory core data, the team established specific T2 cutoffs that deviate from standard industry values to better reflect the unique properties of chalk formations. Their methodology involved comparing wells drilled with both oil-based and water-based muds to validate the accuracy of their saturation and porosity measurements. Ultimately, the study highlights that combining multiple data sources allows for high-confidence reservoir evaluation even when drilling conditions vary. This comprehensive approach ensures that residual oil and formation properties are accurately identified despite significant invasion by drilling fluids. LinkedIn Contact Page: https://www.linkedin.com/in/azeem-cho...