«Oilfield engineering»

The Well Force ZERS 3.0 Program. Accounting for random deviations and buckling. Part 2/3

UDC: 622.245:519.677:531
DOI: -

Authors:

¹ Scientific and Technical Center "ZERS", Moscow, Russia

Keywords: well, strength, buckling, loss of stability, initial curvature, heterogeneity and asymmetry of the structure

Annotation:

A new model was earlier presented that takes into account random deviations in the geometry and properties of pipe and equipment materials as well as additional effects arising from buckling (bend of pipes under the action of longitudinal compressive forces). The proposed model is implemented in the Well Force ZERS 3.0 software and allows describing the jamming of pipes in the well during descending as well as calculating the longitudinal deformations of compressed pipes, taking into account their own curvature and additional curvature during compression (a demo version of the program is available at: https://programs.werymag.ru/Programs). The authors of the article present the results obtained during testing of a new model using the examples of pipe compression numerical modeling and their comparison with the results obtained using a finite element software package. The test results confirmed the effectiveness of the new model and made it possible to clarify one of its parameters describing the longitudinal deformation of compressible pipes.

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