CONCAVE PDC CUTTER
The relevance. Vibrations of a drill string of any origin, arising while drilling a well, lead to a decrease in the quality of the work performed. The known methods of combating this phenomenon are technically and technologically complicated. When drilling with a PDC-type rock cutting tool, one of t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2022-04-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/3488/2694 |
| _version_ | 1798031317864022016 |
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| author | Vyacheslav V. Neskoromnykh Marina S. Popova Igor A. Komarovsky Baochang Liu |
| author_facet | Vyacheslav V. Neskoromnykh Marina S. Popova Igor A. Komarovsky Baochang Liu |
| author_sort | Vyacheslav V. Neskoromnykh |
| collection | DOAJ |
| description | The relevance. Vibrations of a drill string of any origin, arising while drilling a well, lead to a decrease in the quality of the work performed. The known methods of combating this phenomenon are technically and technologically complicated. When drilling with a PDC-type rock cutting tool, one of the reasons for the occurrence of lateral vibrations of the drilling tool is the low level of friction forces of the working edge of the cutters against the rock. Modern possibilities for the synthesis of diamond material make it possible to manufacture PDCs of various shapes and sizes. Developments in the field of creating a PDC cutter with a concave working surface contribute to the development of methods for preventing lateral oscillations of the cutter, and as a result, reducing the vibration level of the entire drill string. The purpose of the research is to develop the design of the PDC-type rock cutting tool, which helps to damp the vibration of the drill string. Methods: method of computer simulation, method of scientific knowledge, analytical research, analysis. Results. The forces arising on the concave surface of the PDC cutter are directed towards each other, counteracting and preventing lateral displacement of the drilling tool. The optimal angle of concavity of the working surface of the cutter should be in the range from 104 to 155 degrees, it is this range of angle values that contributes to the creation of optimal conditions for the performance of the bit while maintaining the anti-vibration effect. The design of the PDC cutter with a concave cutting surface in the form of a cone or sphere allows not only reducing tool vibrations, but also contributes to cleaning the bottom and creating a zone of pre-fracture of the rock in front of the cutter due to the energy of the jet of drilling fluid, which increases the efficiency of rock destruction. |
| first_indexed | 2024-04-11T19:55:31Z |
| format | Article |
| id | doaj.art-1c8d6dbc7fdd4a8aaada8b385f7efcc8 |
| institution | Directory Open Access Journal |
| issn | 2500-1019 2413-1830 |
| language | Russian |
| last_indexed | 2024-04-11T19:55:31Z |
| publishDate | 2022-04-01 |
| publisher | Tomsk Polytechnic University |
| record_format | Article |
| series | Известия Томского политехнического университета: Инжиниринг георесурсов |
| spelling | doaj.art-1c8d6dbc7fdd4a8aaada8b385f7efcc82022-12-22T04:06:04ZrusTomsk Polytechnic UniversityИзвестия Томского политехнического университета: Инжиниринг георесурсов2500-10192413-18302022-04-01333418119210.18799/24131830/2022/4/3488CONCAVE PDC CUTTERVyacheslav V. Neskoromnykh0Marina S. Popova1Igor A. Komarovsky2Baochang Liu3Siberian Federal UniversitySiberian Federal UniversitySiberian Federal UniversityJilin UniversityThe relevance. Vibrations of a drill string of any origin, arising while drilling a well, lead to a decrease in the quality of the work performed. The known methods of combating this phenomenon are technically and technologically complicated. When drilling with a PDC-type rock cutting tool, one of the reasons for the occurrence of lateral vibrations of the drilling tool is the low level of friction forces of the working edge of the cutters against the rock. Modern possibilities for the synthesis of diamond material make it possible to manufacture PDCs of various shapes and sizes. Developments in the field of creating a PDC cutter with a concave working surface contribute to the development of methods for preventing lateral oscillations of the cutter, and as a result, reducing the vibration level of the entire drill string. The purpose of the research is to develop the design of the PDC-type rock cutting tool, which helps to damp the vibration of the drill string. Methods: method of computer simulation, method of scientific knowledge, analytical research, analysis. Results. The forces arising on the concave surface of the PDC cutter are directed towards each other, counteracting and preventing lateral displacement of the drilling tool. The optimal angle of concavity of the working surface of the cutter should be in the range from 104 to 155 degrees, it is this range of angle values that contributes to the creation of optimal conditions for the performance of the bit while maintaining the anti-vibration effect. The design of the PDC cutter with a concave cutting surface in the form of a cone or sphere allows not only reducing tool vibrations, but also contributes to cleaning the bottom and creating a zone of pre-fracture of the rock in front of the cutter due to the energy of the jet of drilling fluid, which increases the efficiency of rock destruction.http://izvestiya.tpu.ru/archive/article/view/3488/2694drillingvibration controlpdc cuttercomputer simulationhydraulic processesrock formation |
| spellingShingle | Vyacheslav V. Neskoromnykh Marina S. Popova Igor A. Komarovsky Baochang Liu CONCAVE PDC CUTTER Известия Томского политехнического университета: Инжиниринг георесурсов drilling vibration control pdc cutter computer simulation hydraulic processes rock formation |
| title | CONCAVE PDC CUTTER |
| title_full | CONCAVE PDC CUTTER |
| title_fullStr | CONCAVE PDC CUTTER |
| title_full_unstemmed | CONCAVE PDC CUTTER |
| title_short | CONCAVE PDC CUTTER |
| title_sort | concave pdc cutter |
| topic | drilling vibration control pdc cutter computer simulation hydraulic processes rock formation |
| url | http://izvestiya.tpu.ru/archive/article/view/3488/2694 |
| work_keys_str_mv | AT vyacheslavvneskoromnykh concavepdccutter AT marinaspopova concavepdccutter AT igorakomarovsky concavepdccutter AT baochangliu concavepdccutter |