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2018 | OriginalPaper | Buchkapitel

5. Conventional Coring

verfasst von : Rahman Ashena, Gerhard Thonhauser

Erschienen in: Coring Methods and Systems

Verlag: Springer International Publishing

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Abstract

As mentioned in Chap. 3, conventional coring is a traditional method of taking samples from bottom-hole formations. This method is still the most commonly practiced method in the petroleum industry whereas it is almost never used in the mining industry.

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Vorheriges Kapitel Types and Components of Core Barrel Assemblies

Nächstes Kapitel Wireline Continuous Coring

Otherwise if the barrel is combined with gel or sponge, etc., only closed-end inner tubes can be used. In such inner tubes, the ball is already seated in the seat and thus the inner tube is closed from its top. This makes the mud circulation through the inner tube impossible. Therefore, before tripping the drill string to the core point, care must be taken to wash and condition the bottom hole.

Traditionally, the conventional coring was conducted with both the outer and inner tubes rotating. This caused mechanical and vibration damage to the recovered rock sample in the inner tube. As a primary innovation in the core barrels, bearings/swivels were added to the inner tube assemblies so that the outer tube assembly is free to rotate whereas the inner tube can remain stationary.

Tugger line is a wire rope used in the drilling rig for lifting light loads.

For overpull, apply 5,000–35,000 Ibs depending on the core size.

PDC bits have longer life and thus contribute to reducing the number of round trips particularly for long coring operations with minimum core barrel length of 90 or 120 ft.

Briner, A.P., A.H. Azzouni, R. Chitnis, and V. Vyas. 2010. Sweet Success in Sour Coring, SPE 128007 MS. Presented at the North Africa Technical Conference and exhibition, Cairo, Egypt, February 14–17.

Gay, M. 2014. A Coring Matrix for Success. Presented at the International Symposium of the Society of Core Analysts, Avignon, France, September 8–11.

Guarisco, P., J. Meyer, R. Mathur, I. Thomson, J. Robichaux, C. Young, and E. Luna. 2011. Maximizing Core Recovery in Lower Tertiary Through Drilling Optimization Service and Intelligent Core Bit Design, SPE/IADC 140070. Presented at the SPE/IADC Drilling Conference, Amsterdam, the Netherlands, March 1–3.

Hegazy, G.M., A.S. Ragab, S.A. Shedid, M.N. Aftab, M. Ali, M.M. Al Riyami, H.W. Ibrahim, and M.F. Ibrahim. 2014. Innovative and Cost-Effective Coring Technique “Extended Coring” for Long Intervals of Multiple Zones with World Record - Case Histories from the UAE, SPE 171852 MS. Presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 10–13.

Hettema, M.H.H., T.H. Hanssen, and B.L. Jones. 2002. Minimizing Coring-Induced Damage in Consolidated Rock, SPE-78156-MS. Presented at the SPE/ISRM Rock Mechanics Conference, Irving, Texas, October 20–23.

Keith, C.I., A. Safari, K.L. Aik, M. Thanasekaran, and M. Farouk. 2016. Coring Parameter optimization-The Secret to Long Cores. Presented at the OTC Conference, Kuala Lumpur, Malaysia, March 22–25.

Lee, R.K., P.M. Strike, C.D. Rengel, and D.B. Sutto. 2013. Harnessing Multiple Learning Styles for Training Diverse Field Personnel in Conventional Coring Operations, IPTC 16654. Presented at International Petroleum Technology Conference, Beijing, China, March 26–28.

Mukherjee, P., J. Peres, B.S. Al-Matar, P. Kumar, P.K. Choudhary, W.K. Al-Khamees, and M. Stockwell. 2015. Piloting Wireline Coring Technology in Challenging Unconsolidated Lower Fars Heavy Oil Reservoir, Kuwait. Presented at the SPE Kuwait Oil and Gas Show and Conference, Mishref, Kuwait, October 11–14.

Silva, A.J., W.R. Bryant, A.G. Young, P. Schultheiss, W.A. Dunlap, G. Sykora, D. Bean, and C. Honganen. 1999. Long Coring in Deep Water for Seabed Research, Geohazard Studies and Geotechnical Investigations. Presented at the Offshore Technology Conference, Houston, Texas, May 3–6.

Skopec, R.A., and G. McLeod. 1997. Recent Advances in Coring Technology: New Techniques to Enhance Reservoir Evaluation and Improve Coring Economics. Published in the Journal of Canadian Petroleum Technology, PETSOC 97-11-02.

Storms, M.A., S.P. Howard, D.H. Reudelhuber, G.L. Holloway, P.D. Rabinowitz, and B.W. Harding. 1991. A Slimhole Coring System for Deep Oceans, SPE 21907-MS. Presented at the SPE/IADC Drilling Conference, Amsterdam, the Netherlands, March 11–14.

Whitebay, L., J.K. Ringen, L.V. Puymbroek, L.M. Hall, and R.J. Evans. 1997. Increasing Core Quality and Coring Performance Through the Use of Gel Coring and Telescoping Inner Barrels, SPE 38687 MS. Presented at the SPE Annual Technical Conference and Exhibition, san Antonio, Texas, October 5–8.

Titel: Conventional Coring
verfasst von: Rahman Ashena
Gerhard Thonhauser
Verlag: Springer International Publishing
Buch: Coring Methods and Systems
Print ISBN: 978-3-319-77732-0

Electronic ISBN: 978-3-319-77733-7

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-77733-7_5