Выдержка
Percussion drilling is the efficient method to drill small holes (≥ 70 mm) in medium- hard and harder rocks. The existing types of drill strings for geological explorations are not intended for strain wave energy transfer. The description of the improved design of the drill string having enclosed-type nipple connections is given in this paper presents. This nipple connection is designed to be used in drilling small exploration wells with formation sampling. Experimental findings prove the effectiveness of the enclosed nipple connection in relation to the load distribution in operation. The paper presents research results of the connection behavior under quasistatic loading (compression-tension). Loop diagrams are constructed and analyzed in force-displacement coordinates. Research results are obtained for shear stresses occurred in the nipple connection. A mechanism of shear stress distribution is described for the wave strain propagation over the connecting element. It is shown that in the course of operation the drill pipe tightening reduces the shear stress three times.
| Язык оригинала | Английский |
|---|---|
| Название основной публикации | IOP Conference Series: Earth and Environmental Science |
| Издатель | Institute of Physics Publishing |
| Том | 27 |
| Издание | 1 |
| DOI | |
| Состояние | Опубликовано - 10 ноя 2015 |
| Событие | 19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014 - Tomsk, Российская Федерация Продолжительность: 6 апр 2015 → 10 апр 2015 |
Другое
| Другое | 19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014 |
|---|---|
| Страна | Российская Федерация |
| Город | Tomsk |
| Период | 6.4.15 → 10.4.15 |
Отпечаток
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Environmental Science(all)
Цитировать
The behavior of enclosed-type connection of drill pipes during percussive drilling. / Shadrina, A.; Saruev, L.
IOP Conference Series: Earth and Environmental Science. Том 27 1. ред. Institute of Physics Publishing, 2015. 012057.Результат исследований: Материалы для книги/типы отчетов › Материалы для конференции
}
TY - GEN
T1 - The behavior of enclosed-type connection of drill pipes during percussive drilling
AU - Shadrina, A.
AU - Saruev, L.
PY - 2015/11/10
Y1 - 2015/11/10
N2 - Percussion drilling is the efficient method to drill small holes (≥ 70 mm) in medium- hard and harder rocks. The existing types of drill strings for geological explorations are not intended for strain wave energy transfer. The description of the improved design of the drill string having enclosed-type nipple connections is given in this paper presents. This nipple connection is designed to be used in drilling small exploration wells with formation sampling. Experimental findings prove the effectiveness of the enclosed nipple connection in relation to the load distribution in operation. The paper presents research results of the connection behavior under quasistatic loading (compression-tension). Loop diagrams are constructed and analyzed in force-displacement coordinates. Research results are obtained for shear stresses occurred in the nipple connection. A mechanism of shear stress distribution is described for the wave strain propagation over the connecting element. It is shown that in the course of operation the drill pipe tightening reduces the shear stress three times.
AB - Percussion drilling is the efficient method to drill small holes (≥ 70 mm) in medium- hard and harder rocks. The existing types of drill strings for geological explorations are not intended for strain wave energy transfer. The description of the improved design of the drill string having enclosed-type nipple connections is given in this paper presents. This nipple connection is designed to be used in drilling small exploration wells with formation sampling. Experimental findings prove the effectiveness of the enclosed nipple connection in relation to the load distribution in operation. The paper presents research results of the connection behavior under quasistatic loading (compression-tension). Loop diagrams are constructed and analyzed in force-displacement coordinates. Research results are obtained for shear stresses occurred in the nipple connection. A mechanism of shear stress distribution is described for the wave strain propagation over the connecting element. It is shown that in the course of operation the drill pipe tightening reduces the shear stress three times.
UR - http://www.scopus.com/inward/record.url?scp=84959017743&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84959017743&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/27/1/012057
DO - 10.1088/1755-1315/27/1/012057
M3 - Conference contribution
AN - SCOPUS:84959017743
VL - 27
BT - IOP Conference Series: Earth and Environmental Science
PB - Institute of Physics Publishing
ER -