Numerical and analytical solutions for the problem of hydraulic fracturing from a cased and cemented wellbore

Atkinson, C; Eftaxiopoulos, DA

dc.contributor.author	Atkinson, C	en
dc.contributor.author	Eftaxiopoulos, DA	en
dc.date.accessioned	2014-03-01T01:18:06Z
dc.date.available	2014-03-01T01:18:06Z
dc.date.issued	2002	en
dc.identifier.issn	0020-7683	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14804
dc.subject	Casing	en
dc.subject	Cement	en
dc.subject	Hydraulic fracturing	en
dc.subject	Pure bond	en
dc.subject	Pure slip	en
dc.subject	Rock	en
dc.subject	Two-dimensional model	en
dc.subject.classification	Mechanics	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Numerical methods	en
dc.subject.other	Cemented wellbore	en
dc.subject.other	Hydraulic fracturing	en
dc.subject.other	casing	en
dc.subject.other	cement	en
dc.subject.other	hydraulic fracturing	en
dc.subject.other	oil and gas production	en
dc.subject.other	recovery technique	en
dc.title	Numerical and analytical solutions for the problem of hydraulic fracturing from a cased and cemented wellbore	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0020-7683(01)00259-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0020-7683(01)00259-1	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	Numerical and analytical investigations of the hydraulic fracture propagation problem, from a cased and cemented wellbore, have been pursued in this communication. A two-dimensional plane model has been used. Pure bond and pure slip boundary conditions, along the steel/cement and the cement/rock interfaces have been implemented, as two extreme cases. Both the in-plane and the anti-plane problems have been considered. Analytical and numerical methods have been applied to the problem of a straight fracture, while in the curved crack case only a numerical solution has been adopted. Crack turning is found to depend on the elastic properties of the rock in the pure bond case, while in the pure slip case no turning occurs. Results indicate that in the pure slip case, a larger pressure than that of the pure bond case, is required at the first propagation step. Results related to a starter (i.e. at the first propagation step) crack lying parallel to the plane of the maximum remote principal stress while the elastic modulus of the rock varies, indicate that bigger values, for both the pressure and the mode I crack opening displacement (COD) at the open hole, develop in the pure slip case than in the pure bond case. Results concerning a starter crack, inclined at varying angles with respect to the plane of the maximum remote principal stress, show that the mode II COD at the open hole is bigger in the pure bond case than in the pure slip case, for all the angles of inclination. (C) 2002 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	International Journal of Solids and Structures	en
dc.identifier.doi	10.1016/S0020-7683(01)00259-1	en
dc.identifier.isi	ISI:000174828800011	en
dc.identifier.volume	39	en
dc.identifier.issue	6	en
dc.identifier.spage	1621	en
dc.identifier.epage	1650	en