METHOD OF DRILLING TOOL STICKING LIQUIDATION IN WELL Russian patent published in 2005 - IPC

Abstract RU 2263199 C2

FIELD: well drilling, particularly for fishing or freeing objects in boreholes or wells.

SUBSTANCE: method involves using stick-prevention devices. The device consists of two components. Passive device component is made as support with movable cone or as embedded elastic socket with gauged orifice. Active component thereof is made as bush or balls. Passive component is included in bottomhole assembly. Active component is located on ground surface and is thrown into the well in the case of drilling tool sticking. Then active component is forced downwards to connect thereof with passive component. After drilling tool sticking liquidation one may continue well drilling operation without tool removing from the well.

EFFECT: increased crash safety and efficiency.

3 dwg

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RU 2 263 199 C2

Authors

Ivannikov V.I.

Ivannikov I.V.

Dates

2005-10-27—Published

2001-03-26—Filed