science-review.ru
Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440
ISSN 2500-0799
ПИ №ФС77-57440
THE METHOD OF CALCULATING THE SPATIAL POSITION OF 5G BOREHOLE AT THE ANTARCTIC STATION VOSTOK
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I present information about the features of drilling borehole 5G, drilled in ice layer at the Russian Antarctic station Vostok. Borehole construction, the data of the penetration of Lake Vostok and the results of glaciological-drilling group at the Vostok station in the 58th season of the Russian Antarctic Expedition are presented. The crash reasons of the drilling borehole 5G and the technology of starting the branch holes are described via termodrill and electromechanical drill. The calculation of spatial position of hole 5G-2 is discussed by the method of measuring the thickness of the crescent-shaped core, formed during collaring additional barrel. The widening process of the hole is presented at the depth 3176.3-3415.1 m after penetration of the lake’s water into the hole. The analysis of the derived data is presented. The process of start the hole 5G-3 and an analysis of the data are obtained. I discuss the experience of the use and effectiveness of drill on the carrying cable for directional drilling in ice layers.