«Onshore and offshore oil and gas well construction»

Evaluation of drill pipes’ fatigue operational life-time in conditions of intense cavitation

UDC: 62-503.56
DOI: 10.33285/0130-3872-2021-11(347)-9-11

Authors:

¹ Samara State Technical University, Samara, Russian Federation

Keywords: drill pipes; caving; fatigue stresses; calculation method

Annotation:

The paper presents a methodology for assessing the fatigue life of drill pipes in conditions of intense caving, especially typical for drilling the upper intervals of wells composed by permafrost. The methodology allows assessing the effect of wellbore caving on the resistance of drill pipes to destruction under the influence of fatigue load sat the stage of development of design and working documentation for the construction of wells.

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