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Название: The behavior of enclosed-type connection of drill pipes during percussive drilling
Авторы: Shadrina, Anastasiya Viktorovna
Saruev, Lev Alekseevich
Ключевые слова: бурильные трубы; ударное бурение; породы; бурильные колонны
Дата публикации: 2015
Издатель: IOP Publishing
Библиографическое описание: Shadrina A. V. The behavior of enclosed-type connection of drill pipes during percussive drilling / A. V. Shadrina, L. A. Saruev // IOP Conference Series: Earth and Environmental Science. — 2015. — Vol. 27 : Problems of Geology and Subsurface Development : XIX International Scientific Symposium in honor of Academician M. A. Usov, 6–10 April 2015, Tomsk, Russia. — [012057, 5 p.].
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.
URI: http://earchive.tpu.ru/handle/11683/19958
Располагается в коллекциях:Материалы конференций

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