2. Exploring Tight Gas Reservoirs
Using the Intelligent Well
Completion Technology

3. Topics Covered
• Tight Gas
• Exploring the Tight gas Economically
• Exploring Tight Gas Using the IWC
• Intelligent Well Technology
• Case Study

5. What is Tight Gas?

6. What is Tight Gas?

7. What is Tight Gas?
Unconventional

8. What is Tight Gas?
Unconventional

9. What is Tight Gas?
Unconventional
rock and sand surrounding the deposit

10. What is Tight Gas?
Unconventional
rock and sand surrounding the deposit
• Because this gas is so much more difficult to extract
than natural gas from other sources, hydraulic
fracturing and directional drilling is necessary to
produce the well.

11. Tight Gas Characteristics

12. Tight Gas Characteristics

13. Tight Gas Characteristics
• Low Permeability (<0.1md)
• Frac Job or Horizontal Well required
• Large pressure gradients across reservoir
• High transient decline rates
• Often Commingled Production
• Often Layered and complex

14. Introduction to the IWC technology
• An intelligent well completion is a system capable of
collecting, transmitting and analysing completion,
production, and reservoir data, and taking action to
better control well and production processes.

15. Exploring Tight Gas Reservoirs
making it economical with IWC
• Remotely-operated hydraulic “frac” valves now can
provide selective control of high-rate stimulation of
multiple intervals in horizontal wells, and can improve
operation time through the elimination of coil tubing
trips. “Frac” valves may be cemented in place and can
also be used after fracturing for simple selective
production test and clean-up operations, with the
ability to manipulate the valves later to shut off water
or gas encroachment.

16. Did you know?
• Coil tubing drilling rigs on a day rate, cost $12,000/
day + $2,000/well (coil charge & mud)

17. Typical IWC components in
exploration of Tight Gas reservoirs
• Interval Control Valve - sFrac™ Valve is a
remotely operated downhole hydraulic valve
that offers a cost-effective multi-stage fracturing
capability to operators working in areas with
tight gas or difficult-to-produce reserves.

18. Typical IWC components in
exploration of Tight Gas reservoirs
• Swelling Packer Technology
eliminates problems in difficult
zonal isolation in Tight-Gas
Reservoir completion so the
modification of the near-bore
concentrations and a low spurt
loss (as designed). consequently
the relative permeability is
solved by leaving very low leak-
off mud with a low spurt loss (as
designed).

19. Typical IWC components in
exploration of Tight Gas reservoirs
• Permanent Monitoring
Systems - Chemical injection
systems provide operators
with precise well-bore
chemistry management that
is designed to optimize flow
assurance, reduce expensive
intervention costs, and
ultimately optimize
production.

20. CASE STUDY: Changbei Field

21. CASE STUDY: Changbei Field
Microseismic hydraulic-fracture monitoring can give the
operator an idea of which stages were fractured and
isolated successfully and can identify areas that are
unstimulated and may need to be exploited by other infill
wells.The knowledge gained from analyzing a horizontal well
completed in a given field can aid in the risk identification,
risk mitigation, and overall design of future horizontal
completions in that field.

22. CASE STUDY: Changbei Field

23. CASE STUDY: Changbei Field

24. CASE STUDY: Changbei Field

25. Conclusion

26. Thank-you for your patience.

27. • SPE Paper References
• Afaleg, N.I.,Pham, T.R., Al-Otaibi, U.F., Amos, S.W., and Sarda, S.: “Design and Deployment of Maximum Reservoir
Contact Wells with Smart Completion in Development of a Carbonate Reservoir”, paper SPE 93138, presented a
the SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, 4-5 April 2005
• Brent Miller and John Paneitz, Whiting Petroleum Corporation, and Sean Yakely and Kent Evans, Baker Hughes,
Unlocking Tight Oil: Selective Multistage Fracturing in the Bakken Shale, SPE 116105, SPE Annual Technical
Conference and Exhibition, Denver, Colorado, USA, 21-24 September 2008
• Cheng,Y. 2010. Impact of Water Dynamics in Fractures on the Performance of Hydraulically Fractured Wells in G
Shale Reservoirs. Paper SPE 127863 presented at the SPE International Symposium and Exhibiton on Formation
Damage Control, Lafayette, Louisiana, USA, 10-12 February 2010.
• Fan, L., Luo, F., Lindsay, G.J., Thompson, J.W. and Robinson, J.R. 2011. The Bottom-Line of Horizontal Well Productio
Decline in the Barnett Shale. Paper SPE 141263 presented at the SPE Production and Operations Symposium,
Oklahoma City, Oklahoma, USA, 27- 29 March 2011
• Robert Pucket and Maurilio Salano / Baker Oil Tools; Michael Krejci / QuantX Wellbore Instrumentation, IWS wit
Hydraulic Adjustable Chokes and Permanent Monitoring Improves Conventional ESP Completion for an Operato
in Ecuador, SPE - 88506, SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth, Australia

28. • WEB - Sites Referred
• Baker Hughes Web Site (Products & Services)
Copyright © 2012 Baker Hughes. All Rights Reserved
• Schlumberger Oil Glossary © 2012 Schlumberger
Limited. All Rights Reserved
• Halliburton Web Site (Products & Services)
Copyright © 2012 Halliburton. All Rights Reserved
• RIGZONE Web Site (How it Works?) Copyright ©
2012 RIGZONE. All Rights Reserved
• onepetro.org (Online Library) Powered by the SPE
• drillingcontractor.org (Online Magazine)

29. Abhinav Singh Bisht
Petroleum Engineering (III yr.)

30. Well Completion
• Completion is the process of making a well
ready for production (or injection)
• Preparing the bottom of the hole to the
required specifications, running in the
production tubing and its associated down
hole tools as well as perforating and
stimulating as required.

31. Exploring Tight Gas Reservoirs
making it economical
Hydraulic Fracturing: It
is a process of
artificially stimulating
the reservoir by
creating a network of
fractures. This is done
by pumping a highly
pressurized (5000psi)
fluids into the well-
bore.

32. Why not vertical drilling?
• Horizontal Drilling has
following advantages over
vertical drilling, as far as the
case with Tight Gas
reservoirs is concerned:
• Deeper reservoir
Penetration
• Multiple Zone Production