๐”– Bobbio Scriptorium
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Development of Downhole Motor Drilling Test Platform

โœ Scribed by Mingxin, Huang; Yu, Wang; Baolin, Liu; Mingshuai, Gao; Liguang, Wang

Book ID
127075615
Publisher
Elsevier
Year
2014
Tongue
English
Weight
565 KB
Volume
73
Category
Article
ISSN
1877-7058

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The pneumatic turbine-powered drilling engine (PTDE) is a unique tool for directional drilling when using air or gas as the drilling fluid. The engine consists of a pneumatic turbine motor coupled to the bit by a four-stage planetary gear transmission and a thrust-bearing assembly, and is supported