TECHICAL Series MATHEMATICS  INFORMATICS  PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
The Influence of the Tool Joints Geometry on the Dynamics of the Drill String
(Influenţa geometriei racordurilor speciale asupra dinamicii garniturii de foraj)
Vol LXII • No. 4A/2010
Nicolaie Calotă
Universitatea Petrol - Gaze din Ploieşti, Bd. Bucureşti, nr: 39, Ploieşti
e-mail: ncalota@upg-ploiesti.ro

 Keywords   drillstring, tool joint, dynamic analysis.

 Abstract
This paper focuses on the possibilities of mechanical and mathematical modeling of the drillstring during the raising descent movements into the hole. It outlines how to take into account the geometry of joints in construction of drilling string equivalent mechanical model.

 Rezumat
In lucrare sunt reliefate posibilitatile de modelare mecanica si matematica ale garniturii de foraj in timpul miscarilor de ridicare si coborare in sonda. Sunt evidentiate modalitatile de a lua in considerare geometria racordurilor speciale in construirea modelului mecanic echivalent garniturii de foraj.



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