The behavior of enclosed-type connection of drill pipes during percussive drilling

A. Shadrina, L. Saruev

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

2 Цитирования (Scopus)

Аннотация

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 оригиналаАнглийский
Название основной публикацииIOP Conference Series: Earth and Environmental Science
ИздательInstitute of Physics Publishing
Том27
Издание1
DOI
СостояниеОпубликовано - 10 ноя 2015
Событие19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014 - Tomsk, Российская Федерация
Продолжительность: 6 апр 201510 апр 2015

Другое

Другое19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014
СтранаРоссийская Федерация
ГородTomsk
Период6.4.1510.4.15

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ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Цитировать

Shadrina, A., & Saruev, L. (2015). The behavior of enclosed-type connection of drill pipes during percussive drilling. В IOP Conference Series: Earth and Environmental Science (1 ред., Том 27). [012057] Institute of Physics Publishing. https://doi.org/10.1088/1755-1315/27/1/012057