MODELING STUDY ON FINITE ELEMENT FOR THREE-DIMENSION CASING DEFORMATION

doi:10.3863/j.issn.1674-5086.2010.03.034

西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (3): 172-175.DOI: 10.3863/j.issn.1674-5086.2010.03.034

• 石油机械工程及其他 • Previous Articles Next Articles

MODELING STUDY ON FINITE ELEMENT FOR THREE-DIMENSION CASING DEFORMATION

SHE Yue-ming¹ GONG De-yin²

1.Downhole Service Department，Henan Oilfield Company，SINOPEC，Nanyang Henan 473132，China；2.Tuha Oilfield Company，CNPC，Hami Xinjiang 839009，China

Received:1900-01-01 Revised:1900-01-01 Online:2010-06-20 Published:2010-06-20

Abstract

Abstract: After 3-D well bore tract deformation，the finite element method should be used to analyze and simulate the reshaping process before reshaping，but geometric modeling is quite difficult.In order to solve the problem，the multi-arm caliper measuring plane and normal vector was defined.On the measuring plane，the local coordinate system for multi-arm caliper is set up，the cosine matrix of local coordinate orientation is determined，and the calculation equation for the while coordinate between casing contact point and caliper on measuring plane is derived.Program is developed and the calculation consequence is input into ANSYS software based on the equation mentioned above，the finite element model after casing deformation is obtained through curve matching，skinning surface，extrusion and griding.The geometric modeling after casing deformation is carried out by using the measured data with multi-arm caliper，and the result indicates the developed geometric modeling method for 3-D casing deformation is feasible and of practical value.

Key words: three-dimension, casing, finite element, well bore diameter, modeling

CLC Number:

TE931
TE319

SHE Yue-ming GONG De-yin. MODELING STUDY ON FINITE ELEMENT FOR THREE-DIMENSION CASING DEFORMATION[J]. 西南石油大学学报(自然科学版), 2010, 32(3): 172-175.

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MODELING STUDY ON FINITE ELEMENT FOR THREE-DIMENSION CASING DEFORMATION

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