Mathias Carlsen

Multiphase RTA in Tight Unconventionals

Two common goals of Rate Transient Analysis (RTA) are the quantification of early time well performance using the Linear Flow Parameter (LFP), as well as the contacted pore volume being drained (e.g. OOIP and OGIP). These two parameters are essential for understanding the effects of completions, geology, and depletion which then advises different strategies for optimizing the economics of future development.

This course outlines limitations in traditional RTA analysis, and goes through three new technologies that has been introduced the past few years to help enhance our understanding of tight unconventionals, namely (1) Numerical RTA (2) multiphase flowing material balance (FMB) and (3) Fractional RTA.

1.01 Introduction (9 min.)
1.02 PVT for the first time? (5 min.)
1.03 Reservoir Fluid Classification (12 min.)
1.04 PVT Models – EOS Models (13 min.)
1.05 Black Oil PVT (15 min.)
1.06 In-place Volumes (8 min.)
1.07 Reservoir Fluid Classification – Revisited (5 min.)

2.01 Bottomhole Pressures (7 min.)
2.02 Well Performance 101 (8 min.)

3.01 Multiphase Flowing Material Balance – Theory (12 min.)
3.02 Multiphase Flowing Material Balance – Practice (11 min.)

4.01 RTA (11 min.)
4.02 Analytical RTA (15 min.)
4.03 Numerical RTA (4 min.)
4.04 Numerical RTA – Key Concepts & Theory (22 min.)
4.05 RTA – Analytical vs. Numerical LFPs (5 min.)

5.01 Numerical Model – Reservoir Simulation & Forecasting (15 min.)
5.02 Eagle Ford Workflow Example (12 min.)
5.03 Workflow in Practice (21 min.)
5.04 Sensitivities (3 min.)

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