Method and apparatus for pressure coring with non-invading gel

Details Method and apparatus for pressure coring with non-invading gel Method and apparatus for pressure coring with non-invading gel

E - Fixed Constructions

21

B

E21B 25/08 (2006.01)

Patent

CA 2160277

A pressure core barrel including an inner tube containing a non-invasive gel for encapsulating a core sample. An anti-whirl core bit is employed, and the core bit and inner tube pilot shoe are configured and arranged to prevent damage to the core from drilling fluid. A special high viscosity, low spurt loss coring fluid is employed in the coring operation. When the encapsulated, pressurized core sample is brought to the surface, pressure is bled off and the core sample's chemical and mechanical integrity are substantially preserved by the gel.

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