Three-Dimensional Nonlinear Analysis of drill String Structure in Annulus

Liu Yan-qiang; Lü Ying-min

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Liu Yan-qiang, Lü Ying-min. Three-Dimensional Nonlinear Analysis of drill String Structure in Annulus[J]. Applied Mathematics and Mechanics, 1994, 15(3): 259-272.

Citation:

Liu Yan-qiang, Lü Ying-min. Three-Dimensional Nonlinear Analysis of drill String Structure in Annulus[J]. Applied Mathematics and Mechanics, 1994, 15(3): 259-272.

Citation:

Liu Yan-qiang, Lü Ying-min. Three-Dimensional Nonlinear Analysis of drill String Structure in Annulus[J]. Applied Mathematics and Mechanics, 1994, 15(3): 259-272.

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Three-Dimensional Nonlinear Analysis of drill String Structure in Annulus

Department of Engineering mechanics, University of Petroleum, Dongying

Received Date: 1992-06-06
Publish Date: 1994-03-15

Abstract

Abstract

Three-dimensional nonlinear analysis of drill string structure in annulus of curvedwellbore is done by using the theory of finite element and Newton-Raphson method.According to the characteristics of its deformation,a method of the description andcomputation of taking different forms of elements for different parameters is advanced.The penalty function method is applied for finding the unknown boundary.the nonlinear effects of curvature of wellbore on the side forces on bit ae shown by the computation.
- Newton-Raphson method,
- penalty function method,
- nonlineareffect,
- drill string

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References(7)

References

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