By a News Reporter-Staff News Editor at Energy & Ecology Business -- Research findings on Mining are discussed in a new report. According to news reporting originating in Stavanger, Norway, by VerticalNews journalists, research stated, “Various laboratory experiments have shown that matching classical weak plane models to anisotropic rock strength test results can be challenging. Discrepancies between the applied models and laboratory observations are often explained by heterogeneities or local variations in both the intrinsic material and bedding planes, without physically addressing possible modeling flaws.”
Funders for this research include Statoil ASA, SINTEF Petroleum Research.
The news reporters obtained a quote from the research from Statoil ASA, “Recent developments have however challenged this approach by introducing the patchy weakness concept. Here, local shear sliding is allowed to occur prior to macroscopic failure, thereby reducing strength at lower loading angles than predicted by the classical weak plane theory. In this paper the original 2D formulation is extended to describe failure under a fully 3D stress state. The updated criterion is applied to a borehole geometry, and based on laboratory tests on core plugs the full strength parameter suite of a caprock shale is derived.”
According to the news reporters, the research concluded: “This allows for improved predictive modeling of wellbore stability in rock with anisotropic strength.”
For more information on this research see: The effect of weakness patches on wellbore stability in anisotropic media. International Journal of Rock Mechanics and Mining Sciences , 2018;104():165-173. International Journal of Rock Mechanics and Mining Sciences can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; International Journal of Rock Mechanics and Mining Sciences - http://www.journals.elsevier.com/international-journal-of-rock-mechanics-and-mining-sciences/)
Our news correspondents report that additional information may be obtained by contacting P. Bautmans, Statoil ASA, Stavanger, Norway. Additional authors for this research include E. Fjaer and P. Horsrud.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.ijrmms.2018.01.016. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2018, NewsRx LLC
CITATION: (2018-04-20), Studies from Statoil ASA in the Area of Mining Reported (The effect of weakness patches on wellbore stability in anisotropic media), Energy & Ecology Business, 659, ISSN: 1945-6956, BUTTER® ID: 015524316
From the newsletter Energy & Ecology Business.
https://www.newsrx.com/Butter/#!Search:a=15524316
This is a NewsRx® article created by NewsRx® and posted by NewsRx®. As proof that we are NewsRx® posting NewsRx® content, we have added a link to this steemit page on our main corporate website. The link is at the bottom left under "site links" at https://www.newsrx.com/NewsRxCorp/.
We have been in business for more than 20 years and our full contact information is available on our main corporate website.
We only upvote our posts after at least one other user has upvoted the article to increase the curation awards of upvoters.
NewsRx® offers 195 weekly newsletters providing comprehensive information on all professional topics, ranging from health, pharma and life science to business, tech, energy, law, and finance. Our newsletters report only the most relevant and authoritative information from qualified sources.