Guide for sidewall coring bit assembly

Details Guide for sidewall coring bit assembly Guide for sidewall coring bit assembly

1982-09-29

1984-05-22

Purser, Ernest R.

Boring or penetrating the earth

Processes

Sampling of earth formations

175 77, 175 78, E21B 4906

Patent

active

044495935

ABSTRACT:
This relates to sidewall coring tools used to obtain samples of the formation through which the wellbore is drilled. It includes a housing which supports a guide means along which the drill bit, core barrel and motor can be moved to extend or retract the cutting bit and core barrel along a selected path. The core barrel is retracted inwardly on a horizontal path and tilted in an upward position such that the outer end of the core barrel is higher than the end near the motor. Means are provided to force the cut core from the barrel into a core container in association with indexing means.

REFERENCES:
patent: 2198821 (1940-04-01), Jessup
patent: 2599405 (1952-06-01), Mennecier
patent: 3630296 (1971-12-01), Bullard
patent: 3817337 (1974-06-01), Panak et al.
patent: 4280569 (1981-07-01), Mount

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