Leakage Calculator for Plugged-and-Abandoned Wells
- Fatemeh Moeinikia (University of Stavanger) | Eric Patrick Ford (International Research Institute of Stavanger AS) | Hans Petter Lohne (International Research Institute in Stavanger (IRIS)) | Oystein Arild (International Research Institute in Stavanger (IRIS)) | Mohammad Mansouri Majoumerd (International Research Institute of Stavanger AS) | Kjell Kåre Fjelde (University of Stavanger)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- November 2018
- Document Type
- Journal Paper
- 790 - 801
- 2018.Society of Petroleum Engineers
- Risk assessment, Permanent well barrier, Leakage rate, Well design, Plug and abandonment
- 5 in the last 30 days
- 318 since 2007
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The current practice on the Norwegian Continental Shelf (NCS) when designing solutions for permanent plug and abandonment (P&A) complies with NORSOK Standard D-010 (2013). This is a prescriptive approach to P&A, as opposed to a “fit-for-purpose” risk-based approach. A risk-based approach means that any given P&A solution is expressed in terms of the leakage risk, which can be formulated in terms of the following quantities: the probability that the (permanent) barrier system will fail in a given time period, and the corresponding consequence in terms of leakage to the environment.
As part of building a leakage-risk model for permanently plugged-and-abandoned wells, a simple leakage-rate calculator has been developed for quick evaluation of the leakage potential from a given (permanent) well-barrier solution. This tool is developed to serve the second aspect of the risk-based approach: the consequence in terms of leakage rate to the environment. The leakage potential from the well can then be quantitatively assessed, taking into account different leakage pathways including leakage through bulk cement, through cement cracks, and through microannuli along cement interfaces.
In the paper, we will provide models to estimate leakage rate for each leakage pathway and show how to integrate them in the leakage calculator to obtain a description of leakage flow from the reservoir through failed barriers to the environment. The information and input parameters needed to achieve this will be discussed, and uncertain parameters will be treated probabilistically, thus allowing for expressing uncertainty in the leakage-rate estimate. Results from the leakage calculator will be demonstrated on a synthetic case, showing variants of a permanently plugged-and-abandoned well.
|File Size||681 KB||Number of Pages||12|
Aadnoy, B. S. 2010. Modern Well Design. London: Taylor & Francis Group.
Aas, B., Sørbø, J., Stokka, S. et al. 2016. Cement Placement with Tubing Left in Hole During Plug and Abandonment Operations. Presented at the IADC/SPE Drilling Conference and Exhibition, Fort Worth, Texas, 1–3 March. SPE-178840-MS. https://doi.org/10.2118/178840-MS.
Ahmed, T. 2001. Reservoir Engineering Handbook. Houston: Gulf Professional Publishing.
Arild, Ø., Lohne, H. P., Majoumerd, M. M. et al. 2017. Establishment of a Quantitative Risk-Based Approach for Evaluation of Containment Performance in the Context of Permanently Plugged and Abandoned Petroleum Wells. Presented at the Offshore Technology Conference, Houston, 1–4 May. OTC-27711-MS https://doi.org/10.4043/27711-MS.
Barclay, I., Pellenbarg, J., Tettero, F. et al. 2002. The Beginning of the End: A Review of Abandonment and Decommissioning Practices. Oilfield Rev. 13 (4): 28–41.
Benedictus, T., van der Kuip, M. D. C., Kronimus, R. A. et al. 2009. Long Term Integrity of CO2 Storage—Well Abandonment. Technical Study Report No. 2009/08, International Energy Agency Greenhouse Gas Research and Development Programme, Cheltenham, UK, November 2009.
Berenblyum, R., Khrulenko, A., Kollbotn, L. et al. 2017. Integrated Approach to CO2-EOR and Storage Potential Evaluation in an Abandoned Oil Field in the Czech Republic. Oral presentation given at the 19th EAGE Increased Oil Recovery Conference, Stavanger, Norway, 24–27 April.
Bois, A. P., Garnier, A., Rodot, F. et al. 2011. How To Prevent Loss of Zonal Isolation Through a Comprehensive Analysis of Microannulus Formation. SPE Drill & Compl 26 (1): 13–31. SPE-124719-PA. https://doi.org/10.2118/124719-PA.
Eshraghi, D. 2013. P&A—Status on Regulations and Technology, and Identification of Potential Improvements. Master’s thesis, University of Stavanger, Stavanger, Norway (June 2013).
Gasda, S. E., Bachu, S., and Celia, M. A. 2004. Spatial Characterization of the Location of Potentially Leaky Wells Penetrating a Deep Saline Aquifer in a Mature Sedimentary Basin. Environ. Geol. 46 (6–7): 707–720. https://doi.org/10.1007/s00254-004-1073-5.
Godøy, R., Fontan, M., Capra, B. et al. 2015. Well Integrity Support by Extended Cement Evaluation—Numerical Modeling of Primary Cement Jobs. Presented at the Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, 9–12 November. SPE-177612-MS. https://doi.org/10.2118/177612-MS.
Hladik, V., Berenblyum, R., Pereszlenyi, M. et al. 2017. LBr-1—Research CO2 Storage Pilot in the Czech Republic. Energy Procedia 114 (July): 5742–5747. https://doi.org/10.1016/j.egypro.2017.03.1712.
Huerta, N. J., Checkai, D., and Bryant, S. L. 2009. Utilizing Sustained Casing Pressure Analog to Provide Parameters to Study CO2 Leakage Rates Along a Wellbore. Presented at the SPE International Conference on CO2 Capture, Storage, and Utilization, San Diego, California, 2–4 November. SPE-126700-MS. https://doi.org/10.2118/126700-MS.
Intergovernmental Panel on Climate Change (IPCC). 2005. Carbon Dioxide Capture and Storage. New York City: Cambridge University Press.
ISO 14224:2016 Petroleum, Petrochemical and Natural Gas Industries—Collection and Exchange of Reliability and Maintenance Data for Equipment. 2016. Geneva, Switzerland: ISO.
King, G. E. and Valencia, R. L. 2014. Environmental Risk and Well Integrity of Plugged and Abandoned Wells. Presented at the SPE Annual Technical Conference and Exhibition, Amsterdam, 27–29 October. SPE-170949-MS. https://doi.org/10.2118/170949-MS.
Liversidge, D., Taoutaou, S., and Agarwal, S. 2006. Permanent Plug and Abandonment Solution for the North Sea. Presented at the SPE Asia Pacific Oil & Gas Conference and Exhibition, Adelaide, Australia, 11–13 September. SPE-100771-MS. https://doi.org/10.2118/100771-MS.
Nederlandse Aardolie Maatschappij BV (NAM). 2003. Unofficial Translation of Mining Regulations of the Netherlands (Mijnbouwwet). Assen, The Netherlands: NAM.
Nelson, E. B. and Guillot, D. 2006. Well Cementing, second edition. Houston: Schlumberger.
Norwegian Energy Agency (NEA). 2016. Cold Venting and Fugitive Emissions from Norwegian Offshore Oil and Gas Activities—Summary Report. Report M-515, April 2016.
Norsok Standard D-010, Well Integrity in Drilling and Well Operations, Revision 4. 2013. Lysaker, Norway: The Norwegian Oil Industry Association.
OP0713, Guidelines for the Abandonment of Wells, Issue 5. 2015a. London: Oil and Gas UK.
OP0713, Guidelines on Qualification of Materials for the Abandonment of Wells, Issue 2. 2015b. London: Oil and Gas UK.
Parcevaux, P. A. and Sault, P. H. 1984. Cement Shrinkage and Elasticity: A New Approach for a Good Zonal Isolation. Presented at the SPE Annual Technical Conference and Exhibition, Houston, 16–19 September. SPE-13176-MS. https://doi.org/10.2118/13176-MS.
Sarkar, S., Tokso¨z, M. N., and Burns, D. R. 2004. Fluid Flow Modeling in Fractures. Report, Earth Resources Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts.
Sørheim, O.-I., Ribesen, B. T., Sivertsen, T. E. et al. 2011. Abandonment of Offshore Exploration Wells Using a Vessel Deployed System for Cutting and Retrieval of Wellheads. Presented at the SPE Arctic and Extreme Environments Conference and Exhibition, Moscow, 18–20 October. SPE-148859-MS. https://doi.org/10.2118/148859-MS.
Talabani, S., Atlas, B., Al-Khatiri, M. B. et al. 2000. An Alternate Approach to Downhole Corrosion Mitigation. J. Pet. Sci. Eng. 26 (1–4): 41–48. https://doi.org/10.1016/S0920-4105(00)00019-X.
Talabani, S., Chukwu, G. A., and Hatzignatiou, D. G. 1993. Gas Channeling and Micro-Fractures in Cemented Annulus. Presented at SPE Western Regional Meeting, Anchorage, 26–28 May. SPE-26068-MS. https://doi.org/10.2118/26068-MS.
Tao, Q. and Bryant, S. L. 2014. Well Permeability Estimation and CO2 Leakage Rates. Int. J. Greenh. Gas Contr. 22 (March): 77–87. https://doi.org/10.1016/j.ijggc.2013.12.022.
Torsæter, M., Opedal, N. V. D. T., Vra°lstad, T. et al. 2013. A Visual Journey into the 3D Chemical Nanostructure of Oilwell Cement. Presented at SPE International Symposium on Oilfield Chemistry, The Woodlands, Texas, 8–10 April. SPE-164105-MS. https://doi.org/10.2118/164105-MS.
Vielsta¨dte, L., Karstens, J., Haeckel, M. et al. 2015. Quantification of Methane Emissions at Abandoned Gas Wells in the Central North Sea. Mar. Petrol. Geol. 68B (December): 848–860. https://doi.org/10.1016/j.marpetgeo.2015.07.030.
Watson, T. L. and Bachu, S. 2007. Evaluation of the Potential for Gas and CO2 Leakage Along Wellbores. Presented at E&P Environmental and Safety Conference, Galveston, Texas, 5–7 March. SPE-106817-MS. https://doi.org/10.2118/106817-MS.
Watson, T. L. and Bachu, S. 2009. Evaluation of the Potential for Gas and CO2 Leakage Along Wellbores. SPE Drill & Compl 24 (1): 115–126. SPE-106817-PA. https://doi.org/10.2118/106817-PA.
Xu, R. and Wojtanowicz, A. K. 2001. Diagnosis of Sustained Casing Pressure From Bleed-Off/Buildup Testing Patterns. Presented at the SPE Production and Operations Symposium, Oklahoma City, Oklahoma, 24–27 March. SPE-67194-MS. https://doi.org/10.2118/67194-MS.
Yin, F. and Gao, D. 2014. Improved Calculation of Multiple Annuli Pressure Buildup in Subsea HPHT Wells. Presented at IADC/SPE Asia Pacific Drilling Technology Conference, Bangkok, 25–27 August. SPE-170553-MS. https://doi.org/10.2118/170553-MS.