Pressure differential mining tool

Details Pressure differential mining tool Pressure differential mining tool

E - Fixed Constructions

21

B

166/30, 166/50

E21B 43/28 (2006.01)

Patent

CA 1234539

PRESSURE DIFFERENTIAL MINING TOOL Abstract of the Disclosure A pressurized fluid is injected into a subterranean cavity in a mineral deposit to support the overburden during hydraulic mining operations. A dynamic seal between the drill string and a surrounding casing retains fluid pressure within the cavity as the drill string rotates during mining operations. A blowout protector retains fluid pressure within the cavity while the drill string is raised or lowered within the cavity when it is necessary to add or remove drill string sections.

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