These slides present an in-depth examination of advanced techniques in reservoir engineering, exploring the practical application of these techniques through detailed case studies, specifically focusing on deepwater environments. The presentation highlights the integration of data analysis, modeling, and technological innovations in understanding and optimizing reservoir performance. Emphasis is placed on the challenges and solutions unique to deepwater reservoirs, underscoring the importance of precise data interpretation and decision-making in complex geological settings. Further topics include time-lapse auto-PTA, sand failure pressure from mobility-thickness decay, and formation evaluation (“sanding potential”). Case studies culminate, demonstrating:

• A $130 million spend on a well intervention was avoided by more accurately assessing the source of a sudden increase in water production.
• Assessment of a well for a stimulation candidate based on a high skin or bad BHP conversion determination.
• Analysis of a gas condensate well in offshore Australia with changing yield, where condensate yield was re-calibrated during shut-ins and oil rates were adjusted accordingly, BHP was calculated accurately at the mid-completion depth, and new transients were recognized, and a PTA report generated for each test.