Study of Multilateral-Well-Construction Reliability
- Ben Butler (Halliburton) | Andreas Grossmann (Halliburton) | Joe Parlin (Halliburton) | Chet Sekhon (Halliburton)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- March 2017
- Document Type
- Journal Paper
- 42 - 50
- 2017.Society of Petroleum Engineers
- reliability, history, multilateral, MLT, success
- 7 in the last 30 days
- 708 since 2007
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Multilaterals are often cited as technology that can be implemented to maximize reservoir-recovery rates. However, few operators have been willing to put multilaterals into practice. The most frequently cited reason for not considering multilaterals is risk. Without access to data to show otherwise, it is difficult to overcome this industry perception of risk toward multilateral technology (MLT). This often leads to decisions not to run the technology on the basis of anecdotes of failed installations that occurred more than a decade ago with technology and circumstances far removed from what would be seen today. To move toward addressing this problem, the authors present a study of data from 22 years of actual multilateral-well applications, examining the true reliability of the technology.
In this study, the records of one multilateral service provider have been analyzed from more than 800 actual multilateral installations, and success and failure rates have been determined. The reliability of multilaterals has been compared with the reliability rates of other wellbore-completion and -construction technologies.
In the context of this study, reliability has been defined as the ability to successfully construct and complete a multilateral junction. Failure has been defined as the loss of either the lateral, main bore, or junction (and therefore access to both legs). Where failures have occurred, a study to determine root cause(s) has been undertaken.
MLT, which was first implemented by Alexander Grigoryan in 1953, came into modern practice in the 1990s. Although it is not failure-free, the reliability of multilateral wells has improved remarkably during the past 22 years. This improvement in reliability has occurred as the complexities of multilateral installations have increased. This paper shows that successful completion rates of multilateral junctions have improved from slightly more than 87% for the period of 1995 to 1999 (with more than 100 junctions completed) to slightly more than 98% for the period of 2010 to 2015 (with more than 220 junctions completed). This improvement is the result of continuous planning, development of and adherence to procedures, management of change, communication, and continuous improvement.
This is the first known study of multilateral reliability that encompasses a large body of data during a significant time period. The results presented should enable operators to make fact-based decisions about the reliability of MLT and about whether this technology should be considered for implementation into resource-development plans.
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Ageh, E. A., Uzoh, O. J., and Ituah, I. 2010. Production Technology Challenges in Deepwater Subsea Tie-Back Developments. Presented at the Nigeria Annual International Conference and Exhibition, Tinapa-Calabar, Nigeria, 31 July–7 August. SPE-140620-MS. http://dx.doi.org/10.2118/140620-MS.
Armentor, R. J., Wise, M. R., Bowman, M. et al. 2007. Regaining Sand Control. Schlumberger Oil Field Review 19 (2): 7. http://www.slb.com/resources/publications/oilfield_review/en/2007/or2007_sum.aspx (accessed 28 April 2015).
Berge, F., Hepburn, N., Bowling, J. et al. 2001. A New-Generation Multilateral Systemfor the Troll Olje Field—Development and Case History. Presented at the PE Offshore European Oil and Gas Conference, Aberdeen, 4–7 September. SPE-71837-MS. http://dx.doi.org/10.2118/71837-MS.
Bonner, J. 2007. Multilateral Technology Then and Now. Hart’s E&P Journal 80 (8): 59–61.
Bosworth, S., Hussien, S. E., Ismail, G. et al. 1998. Key Issues in Multilateral Technology. Schlumberger Oil Field Review 10 (4):17. http://www.slb.com/~/media/Files/resources/oilfield_review/ors98/win98/key.pdf (accessed 1 May 2015).
Brister, R. 2000. Screening Variables for Multilateral Technology. Presented at the SPE International Oil and Gas Conference and Exhibit in China, Beijing, 7–10 November. SPE-64698-MS. http://dx.doi.org/10.2118/64698-MS.
Capderou, C. and DiLorenzo, N. R. 2012. A Fresh Look at Completion Reliability Supports Sand Control Selection. Presented at the SPE Annual Technical Conference, San Antonio, Texas, USA, 8–10 October. SPE-159541-MS. http://dx.doi.org/10.2118/159541-MS.
Demong, K. and Al-Yami, H. 2002. A Rational Approach to Multilateral Project Planning. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 29 September–2 October. SPE-77528-MS. http://dx.doi.org/10.2118/77528-MS.
Droguett, E. L., Santos, W. B., Jacinto, C. M. et al. 2006. Reliability Assessment of Offshore Oil Multilateral Wells in Brazil. Presented at the Reliability and Maintainability Symposium, RAMS ’06. Annual, pp. 499, 505, 23–26. http://dx.doi.org/10.1109/RAMS.2006.1677423.
Ghiselin, D. 2009. Multilateral Wells Come From Russia, With Love. Hart’s E&P Journal 82 (9): 46–47.
Hua, A. W., Qing, T. X., Tong, Y. X. et al. 2012. Multilateral History–Deepest Level 4 Cemented Junction Installation. Presented at the IADC/SPE Drilling Conference and Exhibition, San Diego, California, USA, 6–8 March. SPE-151378-MS. http://dx.doi.org/10.2118/151378-MS.
Ismail, I. M. and Geddes, M. W. 2014. Fifteen Years of Expandable-Sand-Screen Performance and Reliability. SPE Drill & Compl 29 (2). SPE-166425-PA. http://dx.doi.org/10.2118/166425-PA.
Liland, G., Hepburn, N., Martins, F. et al. 2014. Offshore Field Developments With Multilateral Technology–An Optimal Economic Solution Without Significant Operational Risks. Presented at the Rio Oil and Gas Expo and Conference, Rio de Janeiro, Brazil, 15–18 September. IBP1998-14.
TAML Multilateral Guidebook. 1999. Recompiled by Andy Rosener, January 2004.
Vij, S. K., Narasaiah, A.W., and Singh, G. 1998. Multilaterals: An Overview and Issues –Involved in Adopting This Technology. Presented at the SPE India Oil and Gas Conference and Exhibition, New Delhi, India, 17–19 February. SPE-39509-MS. http://dx.doi.org/10.2118/39509-MS.
Vullinghs, P. and Dech, J. A. 1999. Multilateral-Well Utilization on the Increase. Presented at the Offshore Europe Conference, Aberdeen, 7–9 September. SPE-56954-MS. http://dx.doi.org/10.2118/56954-MS.
Waddell, K. K. 1999. Determining the Risk in Applying Multilateral Technology: Gaining a Better Understanding. Presented at the SPE Hydrocarbon Economics and Evaluation Symposium, Dallas, 20–23 March. SPE-52968-MS. http://dx.doi.org/10.2118/52968-MS.
Westgard, D. 2002. Multilateral TAML Levels Reviewed, Slightly Modified. J Pet Technol 54 (9): 24–28. SPE-0902-0024-JPT. http://dx.doi.org/10.2118/0902-0024-JPT.