Abstract:The instability of coal beds, both in the overburden and in the production zone during drilling, in particular with directional borehole, is well known. One of the main coal attributes is presence of cracks and micro-fractures in it. This linked network of cracks is considered as the main source of many problems related to coal instability. Stresses occurring in such formations exceed the coal compressive strength. During drilling, coal becomes unstable, which can result in borehole wall collapsing, stuck pipe… Show more
Set email alert for when this publication receives citations?
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.