«Equipment and technologies for oil and gas complex»

Computer simulation and optimization of a detector-catcher design for increasing its reliability during wells logging

UDC: 622.23.05-192:519.6
DOI: 10.33285/1999-6934-2023-4(136)-5-11

Authors:

¹ Industrial University of Tyumen, Tyumen, Russia

Keywords: well logging, detector-catcher, strength, stiffness, computer simulation, finite elements method, ANSYS, design optimization

Annotation:

Different geophysical methods are used to study rocks characteristics in the near-well space and to monitor the technical state of the drill string. It is possible to reduce the risks of various accidents (sticking of downhole tools, breaking of the prospecting cable, etc.) using special catchers for tools, which are subjected to high requirements. The article considers computer modeling of the LS-ASMT-62×21 detector-catcher to identify the causes of failure during its centralizer operation. The strength analysis performed in the ANSYS Mechanical APLD finite element complex proved its insufficient strength and its base structure stiffness. On the basis of the results obtained in the process of modeling, an optimized geometric model of the centralizer is proposed. Computer simulation of loading the optimized centralizer model using one and the same working scheme showed the detail’s rigidity increase by 1,84 times as well as a 2 times decrease of the area of plastic deformation zone when the centralizer hits the body edge when the device falls. The simulation made it possible to confirm the improved strength reliability of the optimized detector-catcher centralizer and develop a number of technological recommendations for using it at the manufacturing enterprise.

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