РОЗРОБКА НОВОГО ПІКОПОДІБНОГО ДОЛОТА ТА ЙОГО ВИПРОБУВАННЯ В ЛАБОРАТОРНИХ ТА ВИРОБНИЧИХ УМОВАХ
The aim of the work is to develop a new paddle bit of the picobur type, which has increased productivity, stability and reduced energy intensity while drilling wells in soft and partially in medium hard formations. To achieve this goal, the distribution of forces on the cutters located on the blades...
Збережено в:
| Дата: | 2020 |
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| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | Russian |
| Опубліковано: |
Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины
2020
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| Теми: | |
| Онлайн доступ: | http://altis-ism.org.ua/index.php/ALTIS/article/view/166 |
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| Назва журналу: | Tooling materials science |
Репозитарії
Tooling materials science| Резюме: | The aim of the work is to develop a new paddle bit of the picobur type, which has increased productivity, stability and reduced energy intensity while drilling wells in soft and partially in medium hard formations.
To achieve this goal, the distribution of forces on the cutters located on the blades of the blade bit in the radical direction is determined. It is established that the mentioned distribution of efforts is extremely uneven and is the cause of the "freezing" of the bit (periodic stopping of the deepening of the bottom of the well). To eliminate this complication, picobur was developed and patented, the design of which allows to eliminate extreme force on the cutters mounted on the blades near the axis of rotation of the bit, and thereby extend the time of their effective operation.
Laboratory tests of the created picobur while drilling cement blocks showed an increase in productivity with a new tool by 20%. Industrial tests of new pico-drills during drilling of geotechnological wells showed a similar increase in productivity in soft and partially medium hard formations with a simultaneous increase in the resistance of new tools by 20%.
To further increase the efficiency of the created blade-shaped peak-shaped bit, it is necessary to equip its pilot part with PDC cutters, and also develop a bit for drilling oil and gas wells on the principle of the created tool.
The studies are of great practical importance due to the massive drilling of geotechnological wells for the extraction of uranium raw materials in the Republic of Kazakhstan.
The value of research is to obtain new scientific information explaining the complications when drilling with lobed, peak-shaped lobed bits and is the basis for the development of new, patentable bits that destroy the rock in the cutting mode |
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