SU1629462A1 - Weighted drill pipe - Google Patents
Weighted drill pipe Download PDFInfo
- Publication number
- SU1629462A1 SU1629462A1 SU894647672A SU4647672A SU1629462A1 SU 1629462 A1 SU1629462 A1 SU 1629462A1 SU 894647672 A SU894647672 A SU 894647672A SU 4647672 A SU4647672 A SU 4647672A SU 1629462 A1 SU1629462 A1 SU 1629462A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cylinder
- sticking
- cylinders
- well
- pins
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
Abstract
Изобретени относитс к бурению нефт ных и газовых скважин, в частности к буровым инструментам. Цель изобретени - повышение надежности работы ут желенной бурильной трубы (УДТ) за счет ликвидации ее прихвата в скважине. Корпус УБТ состоит из двух цилиндров 4 и 5, концентрично расположенных с возможностью ограниченного осевого перемещени . Наружна поверхность внешнего цилиндра 4 имеет равномерно расположенные продольные пазы 7 и ребра. Ребра 9 цилиндра 5 вход т в лаз 7 цилиндра 4. При нормальной работе цилиндры 4 и 5 св заны друг с другом с помощью срезаемых штифтов 6. На верхнем конце цилиндра 4 и нижнем цилиндра 5 расположены замковые резьбовые участки 1 и 2 УБТ. При возникновении прихвата корпуса УБТ с усть колонна приподнимаетс штифты 6 срезаютс и цилиндры 4 и 5 имеют возможность дл осевого перемещени вверх. Таким образом площадь контакта поверхности УБТ со стенками скважины уменьшаетс вдвое что позвол ет извлечь колонну прикладыва меньшие усили . Освобожденна от прихвата УБТ поднимаетс на устье скважины дл замены штифтов 6 и обратно спускаетс в скважину дл продолжени процесса бурени . 5 ил. I (Л сThe invention relates to the drilling of oil and gas wells, in particular to drilling tools. The purpose of the invention is to increase the reliability of an upgraded drill pipe (UDT) by eliminating its sticking in the well. The UBT housing consists of two cylinders 4 and 5 concentrically arranged with the possibility of limited axial movement. The outer surface of the outer cylinder 4 has uniformly spaced longitudinal grooves 7 and ribs. The ribs 9 of the cylinder 5 are inserted into the manhole 7 of the cylinder 4. During normal operation, the cylinders 4 and 5 are connected to each other using shear pins 6. At the upper end of the cylinder 4 and the lower cylinder 5 there are locking threaded sections 1 and 2 of the UBT. In the event of a sticking of the fitment housing, the pins 6 are lifted from the mouth of the column and the cylinders 4 and 5 are able to move upwards axially. Thus, the contact area of the FBT surface with the walls of the well is halved, which allows the column to be removed by applying less force. The sticking-free tool climbs up at the wellhead to replace the pins 6 and back down into the well to continue the drilling process. 5 il. I (L with
Description
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Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894647672A SU1629462A1 (en) | 1989-02-06 | 1989-02-06 | Weighted drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894647672A SU1629462A1 (en) | 1989-02-06 | 1989-02-06 | Weighted drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1629462A1 true SU1629462A1 (en) | 1991-02-23 |
Family
ID=21427445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894647672A SU1629462A1 (en) | 1989-02-06 | 1989-02-06 | Weighted drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1629462A1 (en) |
-
1989
- 1989-02-06 SU SU894647672A patent/SU1629462A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Трубы нефт ного сортамента. Справочник М.: Недра, 1987, с.199- 203. * |
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