Well-Collision-Avoidance Management and Principles
- Steven J. Sawaryn (Consultant) | Harry Wilson (Baker Hughes, a GE Company) | William T. Allen (BP) | Peter J. Clark (Chevron Energy Technology Company) | Ian Mitchell (Halliburton) | Jerry Codling (Halliburton) | Andy Sentance (Dynamic Graphics Incorporated) | Benny Poedjono (Schlumberger) | Ross Lowdon (Schlumberger) | Jon Bang (Gyrodata Incorporated) | Erik Nyrnes (Equinor ASA)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling & Completion
- Publication Date
- December 2018
- Document Type
- Journal Paper
- 335 - 350
- 2018.Society of Petroleum Engineers
- Management, Practices, Collision Avoidance
- 8 in the last 30 days
- 390 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 35.00|
The well-collision-avoidance management and principles presented in this paper are a culmination of the work and consensus of industry experts from both operators and service companies in the SPE Wellbore Positioning Technical Section (WPTS). This is not a new subject, but current guidance is disparate, company-specific, and occasionally contradictory. As a result, the guidance can be difficult to understand and implement. A further aim is to drive the standardization of the well-collision-avoidance rules, process, and nomenclature throughout the industry. Standardization improves efficiency and reduces implementation errors.
The consequences of an unplanned intersection with an existing well can range from financial loss to a catastrophic blowout and loss of life. The process of well-collision avoidance involves rules that determine the allowable well separation, the management of the associated directional planning and surveying activities, and assurance and verification. The adoption of a specific minimum-allowable separation rule, no matter how conservative, does not ensure an acceptably low probability of collision. Many other factors contribute, such as the level of compliance by office and rig personnel with collision-avoidance procedures, and the completeness and correctness of the directional database. All these factors are connected.
The material is split into eight sections, each dealing with a critical element in the collision-avoidance process. Examples are presented to highlight a good-implementation practice. This aligned approach will dispel some of the current confusion in the industry concerning well-collision avoidance; will improve efficiency when planning and executing wells; and will build industry focus on the associated collision risks when drilling. The WPTS is also supporting the current development of API RP 78 (not yet issued).
This is the first of two papers. The second paper (Sawaryn et al. 2018) covers the minimum-allowable separation rule and its application, assurance, and verification.
|File Size||838 KB||Number of Pages||16|
API RP 7G, Recommended Practice for Drill Stem Design and Operation Limits, sixteenth edition. 2015. Washington, DC: American Petroleum Institute.
Bang, J. 2017. Quantification of Wellbore-Collision Probability by Novel Analytic Methods. SPE Drill & Compl 32 (4): 255–276. SPE-184644-PA. https://doi.org/10.2118/184644-PA.
Bang, J., Torkildsen, T., Bruun, B. T. et al. 2009. Targeting Challenges in Northern Areas Due to Degradation of Wellbore Positioning Accuracy. Presented at the SPE/ADC Drilling Conference and Exhibition, Amsterdam, 17–19 March. SPE-119661-MS. https://doi.org/10.2118/119661-MS.
Brahic, C. 2008. Five Ways To Trigger a Natural Disaster. NewScientist (29 July), https://www.newscientist.com/article/dn14425 (accessed 3 November 2016).
Codling, J. 2017. The Effect of Survey Station Interval on Wellbore Position Accuracy. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, 9–11 October. SPE-187249-MS. https://doi.org/10.2118/187249-MS.
De Wardt, J. P., Mullin, S., Thorogood, J. L. et al. 2013. Well Bore Collision Avoidance and Interceptions—State of the Art. Presented at the SPE/IADC Drilling Conference, Amsterdam, 5–7 March. SPE-163411-MS. https://doi.org/10.2118/163411-MS.
Ekseth, R., Torkildsen, T., Brooks, A. G. et al. 2007. High-Integrity Wellbore Surveys: Methods for Eliminating Gross Errors. Presented at the SPE/IADC Drilling Conference, Amsterdam, 20–22 February. SPE-105558-MS. https://doi.org/10.2118/105558-MS.
Garner, J., Martin, K., McCalvin, D. et al. 2002. At the Ready: Subsurface Safety Valve. In Schlumberger Oilfield Review, Winter 2002/2003, 52–64.
ICF International. 2016. Recommendations for Improvements to Wellbore Surveying and Ranging Regulations. Prepared for the US Department of the Interior, Bureau of Safety and Environmental Enforcement, BPA: W13PA00010, 14 October 2016. https://www.bsee.gov/research-reports/761aa (accessed 1 November 2016).
International Association of Oil & Gas Producers: OGP. 2012. Cognitive Issues Associated With Process Safety and Environmental Incidents, Report No. 460, July 2012.
ISCWSA. 2014a. The Fundamentals of Successful Well Collision Avoidance Management, January 2014. http://www.iscwsa.net/download/d9a70f97-a59e-11e6-b294-55d7d6d47f01/ (accessed 29 May 2018).
ISCWSA. 2014b. Recommendation Against Minimum Allowable Separation Dispensation for HSE Risk Wells. http://www.iscwsa.net/download/5c9c9214-a5a0-11e6-8330-a765019e26b7/ (accessed 29 May 2018).
ISCWSA. 2017. Collision Avoidance Lexicon 2017, Collision Avoidance Calculations—Current Common Practice. http://www.iscwsa.net/download/c450f659-ae90-11e7-9805-2f2720c3afa0/ (accessed 29 May 2018).
Jamieson, A. 2018. Introduction to Wellbore Surveying. University of the Highlands and Islands. Version V06.02.17. https://www.uhi.ac.uk/en/wellborepositioning-download/ (accessed 29 May 2018).
Klayman, J. and Ha, Y. W. 1987. Confirmation, Disconfirmation, and Information in Hypothesis Testing. Psychological Review 94 (2): 211–228. https://doi.org/10.1037/0033-295X.94.2.211.
Poedjono, B., Phillips, W. J., and Lombardo, G. J. 2009. Anti-Collision Risk Management Standard for Well Placement. Presented at the SPE Americas E&P Environmental and Safety Conference, San Antonio, Texas, USA, 23–25 March. SPE-121040-MS. https://doi.org/10.2118/121040-MS.
Reed, D. and Turnbull, J. 2016. Risk-Based Management of Wells Safety-Related Software Systems. Presented at the SPE Intelligent Energy International Conference and Exhibition, Aberdeen, 6–8 September. SPE-181074-MS. https://doi.org/10.2118/181074-MS.
Sawaryn, S. J. and Thorogood, J. L. 2005. A Compendium of Directional Calculations Based on the Minimum Curvature Method. SPE Drill & Compl 20 (1): 24–36. SPE-84246-PA. https://doi.org/10.2118/84246-PA.
Sawaryn, S. J., Sanstrom, W. C., and McColpin, G. R. 2006. The Management of Drilling-Engineering and Well-Services Software as Safety-Critical Systems. SPE Drill & Compl 21 (2): 141–147. SPE-73893-PA. https://doi.org/10.2118/73893-PA.
Sawaryn, S. J., Wilson, H., Bang, J. et al. 2018. Well Collision Avoidance: Separation Rule. SPE Drill & Compl SPE-187073-PA. (in press; posted November 2018). https://doi.org/10.2118/187073-PA.
Scandpower. 2001. Blowout and Well Release Frequencies. Report No. 27.20.01/R2 (February).
SINTEF. 2000. Offshore Blowout Database. SINTEF Industrial Management, Department of Safety and Reliability, Trondheim, Norway (December).
Thorogood, J. L. 1980. Development of a Reliable Deviation Surveying Programme Using Standard Instruments. Presented at the European Offshore Petroleum Conference and Exhibition, EUR 247, London, 21–24 October. SPE-247-1980-MS. https://doi.org/10.2118/247-1980-MS.
Thorogood, J. L. and Sawaryn, S. J. 1990. The Travelling Cylinder: A Practical Tool for Collision Avoidance. Presented at the SPE/IADC Drilling Conference, Houston, 27 February–2 March. SPE-19989-MS. https://doi.org/10.2118/19989-MS.
Thorogood, J. L. and Sawaryn, S. J. 1991. The Traveling-Cylinder Diagram: A Practical Tool for Collision Avoidance. SPE Drill Eng 6 (1): 31–36. SPE-19989-PA. https://doi.org/10.2118/19989-PA.
Williamson, H. S. 1998. Towards Risk-Based Well Separation Rules. SPE Drill & Compl 13 (1): 47–51. SPE-36484-PA. https://doi.org/10.2118/36484-PA.