DRILLING BODY FOR EXTRACTION OF DIRECTED CORE Russian patent published in 2005 - IPC

Abstract RU 2250981 C1

FIELD: geology.

SUBSTANCE: device has columnar pipe with drilling crown, transfer pipe, core extractor and core-directing device. Core-directing device is in form of arc-shaped pipe of plastic-flexible material, separated on sections. Inside each section of pipe metallic ball of hard material is placed. Pipe ends are closed. Pipes are held in circular groove, made on inner surface of core extractor upper end. Upper end of extractor is separated on sectors by means of slits. Drilling body is of simple construction and operation and provides trustworthy data concerning inclinometer measurements of core.

EFFECT: higher efficiency.

3 dwg

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RU 2 250 981 C1

Authors

Zhuravlev D.M.

Rjabchikov S.Ja.

Del'Va V.A.

Dates

2005-04-27—Published

2003-12-02—Filed