Напружено-деформований стан бурильної колони на ділянках свердловин з 'різкими перегинами'
| Autor: | Rachkevych, R. V. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
a stress-strain state
a flexible beam three-dimensional elastic line a drill string |
| Popis: | During the research a drill string was simulated by a flexible beam. The flexible beam has a 3D deformation under external loadings. The system of vector differential equations of equilibrium is used for analysis of the stress-strain state. The mathematical model takes into consideration a body weight and stiffness of a drill string, axial force, torsional moment and reactions of a hole wall. The deformation of a drill string elastic line with external diameter of 127 mm in a well "dog-leg" was analyzed in real operational conditions using the developed method. The author obtained the function of a drill string elastic line in 3D coordinate system. There were drawn the diagrams of normal stresses of bending around basic axes of inertia of a drill string cross-section. It is also noticed that the "dog-leg" increases these stresses twice. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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