Exploring Tight Gas Reservoir Using Intelligent Well Technology
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The document discusses exploring tight gas reservoirs economically using intelligent well completion (IWC) technology. Tight gas is found in low permeability rock and requires hydraulic fracturing and directional drilling to produce. IWC uses remotely operated valves for selective multi-stage fracturing of horizontal wells to improve efficiency. A case study describes how IWC and microseismic monitoring in China's Changbei Field helped optimize subsequent horizontal well completions in that field.
Exploring Tight Gas Reservoir Using Intelligent Well Technology
- 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.
- 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