Through-wall yield ductile burst pressure of high-grade steel tube and casing with and without corroded defect. (March 2021)

• Record Type: Journal Article
• Authors: Kuanhai, Deng; Yang, Peng; Bing, Liu; Yuanhua, Lin; Jiandong, Wang
• Is Part Of: Marine structures. Volume 76(2021)
• Publication Date: 2021-03
• Subjects: High-grade steel tube and casing -- Through-wall yield -- Ductile burst pressure -- Corrosion defect -- WTSSY criterion -- Material parameter; Naval architecture -- Periodicals; Offshore structures -- Periodicals; Architecture navale -- Périodiques; Structures offshore -- Périodiques; Naval architecture; Offshore structures; Periodicals; 620.4162
• DOI: 10.1016/j.marstruc.2020.102902
• Languages: English
• ISSNs: 0951-8339

Abstract

Abstract: Service environment of tube and casing in deep and ultra-deep well is getting more and more complicated, and the internal pressure applied to tube and casing is higher, so that the high-grade steel tube and casing (HGTC) made of ductile material is widely used. Obviously, the calculation of ductile burst pressure for HGTC is one of the key factors in design and important to safe and efficient development of unconventional oil and gas resources. Here, based on the failure principle of through-wall yield and unified yield criterion, the unified formula of through-wall yield ductile burst pressure (TYBP) for tube and casing under practical service condition which can be used to calculate TYBP of API HGTC and non-API HGTC accurately and reasonably by using true material parameters, has been deduced in this paper with due consideration of the effect of Bauschinger effect (BE), material hardening and intermediate principal stress (IPS) on the TYBP, by which the influence rules of BE, IPS and yield criterion on TYBP of tube and casing have been investigated.（The effect of lattice effect (BE), material hardening and intermediate principal stress (IPS) on TYBP is accurately and reasonably derived from non-API HGTC by using real material parameters. The value of BE, IPS and the TYBP yield criterion of pipe and casing are studied. Eight kinds of classic through-wall yield ductile burst formulas for tube and casing made of new material have been be derived from a series of yield criterion, by which TYBP model of HGTC with and without corrosion defect has been established based on weighted twin shear stress yield criterion. The calculation results of TYBP model presented by this paper are the closest to the full-scale burst experimental data than the other burst models, which can provide an important reference for burst pressure design and estimation of HGTC in deep and ultra-deep well. Highlights: Unified formulas of TYBP for tube/casing is derived under down-hole service condition. Through-wall yield ductile burst model of HGTC is presented based on WTSSY criterion. Effects of material parameter, IPS and yield criterion on TYBP are obtained. Through-wall yield ductile burst model is validated by full-scale burst test data.