DFIT

The Unconventional Well Test

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DFIT – The Unconventional Well Test course will review the theory of fracture-injection/falloff testing, the design of DFITs, and interpretation of DFIT data using both straight-line and type-curve methods. Design and interpretation methods will be illustrated with North American field examples, including horizontal and vertical well DFITs in unconventional reservoirs. Additionally, field case studies will be included to show how DFIT interpretations can be used in production data analysis of wells producing from unconventional reservoirs.

Content duration: (15:33:52)

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    Chapter 1 - Introduction to DFIT Analysis 2:42:44

    1.01 Intro to DFITs (13:01)  Sample Lesson

    1.02 Revisiting Hydraulic Fracturing (16:28)

    1.03 Revisiting Hydraulic Fracturing Continued (13:22)

    1.04 Revisiting Hydraulic Fracturing - Propagation (07:18)

    1.05 DFIT Hydraulic Fracture Fundamentals - Fracture Pressure (20:42)

    1.06 DFIT Hydraulic Fracture Fundamentals - Fracture Closure (27:33)

    1.07 DFIT Hydraulic Fracture Fundamentals - Storage and Compliance (13:49)

    1.08 DFIT Hydraulic Fracture Fundamentals - Horizontal Well Leak-off Types (11:00)

    1.09 DFIT Hydraulic Fracture Fundamentals - Fracture Closure - MWX Site (21:19)

    1.10 DFIT Hydraulic Fracture Fundamentals - Fracture Closure - Lab Data (18:12)

    Chapter 2 - Before-Closure Analysis and The G-Function 2:30:46

    2.01 The G-Function Introduction (27:17)

    2.02 The G-Function Applied (19:26)

    2.03 Observed Leak-Off Types (19:26)

    2.04 Before-Closure Analysis - G-Function (23:55)

    2.05 Short-Flow Transient Analysis - ISIP (13:28)

    2.06 Before-Closure Analysis - Permeability (10:39)

    2.07 Before-Closure Analysis - Permeability Continued (13:55)

    2.08 Before-Closure Analysis - Permeability Continued Further (12:16)

    2.09 Chapter 2 Key Learnings (10:24)

    Chapter 3 - After-Closure and Short Flow Transient Analysis 1:20:14

    3.01 After-Closure and Short Flow Transient Analysis - Outline (16:38)

    3.02 Digression ()

    3.03 Mini-Frac or DFIT Flow Regimes (14:32)

    3.04 Radial Flow Examples (15:48)

    3.05 Linear Flow Example (18:34)

    3.06 DFIT Example (14:42)

    Chapter 4 - Short-Flow Transient Analysis 1:40:47

    4.01 What We Need, What We Know and Confidence (15:01)

    4.02 Slug Solution (13:33)

    4.03 DFIT as a Short-Flow Transient Test (15:19)

    4.04 DFIT as a Short-Flow Transient Test - Conventional Examples (20:12)

    4.05 DFIT as a Short-Flow Transient Test - Unconventional Examples (22:40)

    4.06 DFIT as a Short-Flow Transient Test - Return to Example 3 (14:02)

    Chapter 5 - DFIT Design and Analysis 2:21:44

    5.01 What We Need and Know and Our Confidence (20:58)

    5.02 General Design Guidelines (13:35)

    5.03 Area or Volume of Investigation (13:52)

    5.04 Representative Elementary Volume (11:41)

    5.05 Volume Rate and Time (14:37)

    5.06 Design (23:34)

    5.07 Short-Flow Transient Analysis (23:36)

    5.08 Short-Flow Transient Analysis Example 2 (19:51)

    Chapter 6 - Using DFIT Measurements 1:36:41

    6.01 Introduction (19:47)

    6.02 Constrained Rate Transient Analysis (15:22)

    6.03 Constrained RTA - Interference (16:01)

    6.04 Constrained RTA - MFHW Oil Well Example (15:55)

    6.05 Constrained RTA - MFHW Gas Well Example (19:37)

    6.06 Constrained RTA - MFHW Gas Well Production (09:59)

    Chapter 7 - Advanced Topics 59:17

    7.01 NFIT RFIT RNFIT - Definition (18:35)

    7.02 NFIT Examples (13:46)

    7.03 More Examples (26:56)

    Chapter 8 - Advanced Topics - New Technology 2:21:39

    8.01 En Echelon Fracture Swarms (13:10)

    8.02 En Echelon Fracture Swarms - Transient Solutions (16:22)

    8.03 Evaluating Technical Papers - Hyperbole (20:14)

    8.04 McClure, Bammidi, Cipolla et al - Examples (19:12)

    8.05 McClure, Bammidi, Cipolla et al - Continued (12:39)

    8.06 The Swiss Paper (27:10)

    8.07 Fracture Closure is a Process (11:39)

    8.08 Key Learnings (21:13)