Water weakening of chalk: A mechanistic study
MetadataShow full item record
- PhD theses (TN-IPT) 
Original versionWater weakening of chalk: A mechanistic study by Merete Vadla Madland, Stavanger : University of Stavanger, 2005 (PhD thesis UiS, no. 11)
Since the detection of the Ekofisk subsidence some 20 years ago, there has been a considerable research activity concerning chalk behaviour in general, and mechanical properties particularly. Due to the importance of water injection into chalk reservoirs to improve oil recovery, an extended experimental testing has been performed in order to further investigate the socalled water weakening effect. The mechanisms behind well instability, compaction, and subsidence experienced in the North Sea chalk reservoirs are, however, not completely understood.
PhD thesis in Petroleum engineering. At this point, only the introduction is available online, not the articles.
Has partsMadland, M.V., Korsnes, R.I. & Risnes, R. (2002): Temperature effects in Brazilian, uniaxial and triaxial compressive tests with high porosity chalk. SPE 77761, SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 11 pp.
Risnes, R., Madland, M.V., Hole, M. & Kwabiah, N.K., 2004: Water weakening of chalk - Mechanical effects of waterglycol mixtures. Journal of Petroleum Science and Engineering (in press), 26 pp.
Heggheim, T., Madland, M.V., Risnes, R. & Austad, T. (2005): A chemical induced enhanced weakening of chalk by seawater. Journal of Petroleum Science and Engineering, 46, 171-184.
Madland, M.V., Finsnes, A., Alkafadgi, A., Risnes, R. & Austad, T., 2005: The influence of CO2 gas and carbonate water on the mechanical stability of chalk. Journal of Petroleum Science and Engineering (under referee), 31 pp.