1. Well Test Analysis in Horizontal Wells
Group: BTP-3

2. What it provides
• Initial reservoir pressure (pi)
• Permeability thickness (kh)
• Skin (S)
Menu
• Wellbore perforated length (Hw)
• Distance of horizontal wellbore to
bottom of formation (Zw)
• Permeability and effective
permeability

3. Well Testing in Horizontal Wells
Where horizontal drilling is useful:
• Natural vertical fractures
• Thin layered reservoir
• Old reservoirs that no longer have
adequate drive mechanisms
• Producing reservoirs with extremely high
dip angles
• Exploration and development of
inaccessible locations
• Areas where environmental concerns
minimize number of surface locations

4. Problems in Horizontal Well
Testing
• Three dimensional flow geometry -
Interpretation
• Zonal variation of vertical
permeability

5. Types of Pressure
Transient Tests
• Build-up Tests
• Drawdown Test
• Interference Test
• Pulse Test
• DST

6. The general flow patterns that are
encountered in horizontal well testing:
Flow Patterns
Radial Linear
Early Radial Early Linear
Late Radial Late Linear

7. Our Project
• We are investigating about
permeability and skin factor.
• Problems that are encountered in
determining parameters and way
to overcome that.

8. Build Up Test

9. Build Up Test

10. Build Up Test

11. Build Up Test

12. Drawdown Test

13. Drawdown Test

14. Drawdown Test

15. Drawdown Test

16. Interference Test

17. Methodology
Methodology to be opted for B.Tech
project well testing analysis in
horizontal well
• Literature survey includes
– Research papers
– Book collection
– Chapter distribution for report writing

18. Methodology
• Collection of various horizontal well
data from companies:-
– different well test data
• For the history match and future
forecasting
– Well logs Work over history
– Production history
– Injection history

19. Methodology
• Comparison of company’s calculated
permeability and skin factor with
our calculation done by using
– PanSystem
– FEKETE (decline curve analysis)
• Performance prediction and history
matching by using CMG software.

20. Thank you…
Prepared by:
 Shalini Singh 08BT01030
 Anurag Kumar Singh 08BT01038
 Harsh Chaudhari 08BT01044
 Sohil Shah 08BT01045
 Priya Verma 08BT01090