ОСОБЛИВОСТІ ГІДРОТРАНСПОРТУ ЗНІМНИХ КЕРНОПРИЙМАЧІВ
Constructive choice and justification of effective technical and technological schemes of coalface circulation link of drilling column and removable core receiver, which provide stability of process of deepening bore hole with the high degree of the productivity and profitability. The features of th...
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| Datum: | 2020 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Ukrainian |
| Veröffentlicht: |
Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины
2020
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| Schlagworte: | |
| Online Zugang: | http://altis-ism.org.ua/index.php/ALTIS/article/view/206 |
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| Назва журналу: | Tooling materials science |
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Tooling materials science| Zusammenfassung: | Constructive choice and justification of effective technical and technological schemes of coalface circulation link of drilling column and removable core receiver, which provide stability of process of deepening bore hole with the high degree of the productivity and profitability.
The features of the dynamics of cylindrical containers in the flow of the cleaning agent under the conditions of creating a reverse circulation scheme have been investigated by laboratory and analytical methods and the relative motion velocities while moving core receivers of variable length and diameter in the circulation channel of the well have been determined.
Based on an in-depth analysis of the method for determining the speed of the relative movement of cylindrical containers in the inner bore of the drill string, an appropriate mathematical model was determined, fully characterized by the initial factor – the average flow rate of the drilling fluid in the pipe. Taking into account the limiting conditions in the hydraulic calculations of the circulation system of the well, it was found that the speed of the core receiver-container along the ascending line can be determined by solving the system of equations regulating the pressure drops required to maintain it in suspension. The influence of the geometrical dimensions of the transport line, the diameter and length of the core-receiving containers on the speed of their relative movement have been studied. The uninterrupted process of transportation of removable core-receiving containers is ensured by well-defined intervals of rational ratios of the geometric dimensions of the transport line and the containers themselves.
The obtained research results are basic for the design of a rational hydraulic program for cleaning wells when using the transportation scheme for removable coring containers-containers with a fluid flow. The obtained mathematical dependencies characterizing the process of container movement can be used as the basis for the design and operation of complexes of technical means for drilling using removable core receivers |
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