Slimhole well casing design for high-temperature geothermal exploration and reservoir assessment

• Autorzy: Kruszewski M. , Thorhallsson S. , Assadi M. , Śliwa T.

Identyfikatory

DOI

10.7494/drill.2017.34.2.465

• Języki publikacji: EN

Abstrakty

EN

It is anticipated that utilization of geothermal resources for renewable energy production will continue to grow globally. Since cost of drilling and well construction constitutes a considerable share of the total cost of the geothermal installations, development and evaluation of low-cost alternatives is crucial for expansion of this industry. This paper describes slimhole casing design for geothermal exploration wells, as an alternative for reduced cost and improved environmental performance. The main goal of the paper is to contribute to cost effective casing design program that satisfies severe reservoir conditions of geothermal wells. A case study is presented for casing design for a 2000 m deep vertical well with water level at 200 m, where the New Zealand Code of Practice has been applied. The “worst case scenario”, i.e. when temperature and pressure follow the boiling point depth curve (BPD), has been considered as base case for the casing design, when drilling in a high-temperature geothermal area. Alternative methods are also presented for determining the minimum casing setting depths and the results are compared. Pressure and temperature conditions inside the well were established using X-steam program, an Excel add-in, and the final results, establishing loading criteria that the casing has to withstand i.e.: burst, collapse and tension/compression are presented.

Słowa kluczowe

EN

geothermal exploration wells; slimhole casing

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: AGH Drilling, Oil, Gas
• Rocznik: 2017
• Tom: Vol. 34, no. 2
• Strony: 465--493
• Opis fizyczny: Bibliogr. 19 poz., rys., tab., wykr.

Twórcy

autor

Kruszewski M.

• Keilir Institute of Technology, Reykjanesbar, Iceland
• AGH University of Science and Technology, Faculty of Drilling, Oil and Gas, Krakow, Poland

autor

Thorhallsson S.

• ISOR Iceland Geosurvey

autor

Assadi M.

• University of Stavanger, Faculty of Technology and Natural Science

autor

Śliwa T.

• AGH University of Science and Technology, Faculty of Drilling, Oil and Gas, Krakow, Poland

Bibliografia

• [1] Fridleifsson G.O., Elders W.A., Zierenberg R., Weisenberger T.B., Hardarson B.S., Stefansson A., Gislason T., Sigurdsson O., Ţorolfsson G., Mesfin K.G., Sverrisdottir S.B., Hafnadottir M.O., Kruszewski M., Calicki A., Einarsson G.M., Nielsson S., Gunnarsdottir S.H., Poux B.: The drilling of the Iceland Deep Drilling Project geothermal well at Reykjanes has been successfully completed. Completion Report, Iceland, February 1, 2017 [source: 09.04.2017: http://iddp.is/2017/02/01/the-drilling-of-the-iceland-deep-drilling-project-geothermal-well-at-reykjaneshas-been-successfully-completed-2/].
• [2] Combs J., Finger J.T., Goranson C., Hickox C.E., Jacobson R.D., Polk G.: Slimhole handbook: Procedures and recommendations for slimhole drilling and testing in geothermal exploration. Sandia National Laboratories, Albuquerque, New Mexico, USA, 1999.
• [3] Karlsson Th.: Casing design for high temperature geothermal wells. Geoth. Resource Council, Transactions, 2, 1978, pp. 355-358.
• [4] Huang Hefu: Study on deep geothermal drilling into a supercritical zone in Iceland. Geothermal Training Programme at University of the United Nations, Orkustofnun, Reykjavik. Reports 2000, Number 7.
• [5] Nielson L.D., Garg S.K.: Slim Hole Reservoir Characterization for Risk Reduction. Proceeding of the 41st Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 22-24, 2016, SGP-TR-209.
• [6] Thorhallsson S.: Well design and geothermal drilling technology (unpublished lectures). Geothermal Training Programme at United Nations University Geothermal Training Programme (UNU GTP), ISOR Iceland Geosurvey, 05/2016.
• [7] Boart Longyear Global Product Catalogue, Coring Rods and Casing, March 2009.
• [8] NZS 2403:2015 Code of Practice for Deep Geothermal Wells.
• [9] NZS 2403:1991 Code of Practice for Deep Geothermal Wells.
• [10] Hole H.: Geothermal well design - Casing and Wellhead. June 2008, Geothermal Consultants NZ Ltd., Birkenhead, Auckland, New Zealand.
• [11] Hossein-Pourazad H.: High temperature geothermal wells design. Geothermal Training Programme at University of United Nations, Orkustofnun, Reports 2005, Number 9.
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• [13] Moumin O.A.: Geothermal well design, Geothermal Training Programme at University of United Nations. Orkustofnun, Reports 2013, Number 28.
• [14] Gabolde G., Nguyen, J.P.: Drilling data handbook, 8th ed.. Institut Francaise du Petrole Publications, Paris, 2006.
• [15] API, 1989: API Bulletin on formulas and calculations for casing, tubing, drill pipe and line pipe properties. American Petroleum Institute, Washington DC, API Bulletin 5C3-89.
• [16] Merliahmad M., Giacomel B., Sakura K.: Casing Connection Selection for Geothermal Applications Using New Input From HPHT and Thermal Wells Testing Protocols. Proceedings World Geothermal Congress 2015, Melbourne, Australia, 19-25 April 2015.
• [17] Thorhallsson S., Gunnsteinsson S.: Slim wells for geothermal exploration. Presented at “Short Course on Geothermal Development and Geothermal Wells”, organized by UNU-GTP and LaGeo, in Santa Tecla, El Salvador, March 11-17, 2012.
• [18] http://www.glossary.oilfield.slb.com/ [source 18.05.2016].
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Uwagi

EN

The paper was created within statute studies at the Faculty of Drilling, Oil and Gas at AGH University of Science and Technology in Krakow, Poland. Grant No. 11.11.190.555

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).