US 5,670,717 A · Method and device for detecting and/or measuring at least one geophysical parameter from a core sample

Abstract

Method and device for detecting and/or measuring at least one geophysical parameter from a core sample (1), in particular in the oil sector, comprising, during an operation of core drilling with a sampler (2); arranging, substantially fixed relative to the sampler (2), a sensor (3) for detecting and/or measuring said parameter, directly downstream of the exit orifice (5) of the sampler (2) relative to the direction of withdrawal of the core sample (1), in the vicinity of the withdrawal path of the core sample (1), detecting and/or measuring values of the parameter at at least one location on the core sample (1) while the latter is being withdrawn from and/or moved back in the sampler (2), and processing of the detected and/or measured values of the parameter, in order to store them in memory and/or use them immediately.

Claims31

Dependent claims

A method for detecting and/or measuring at least one geophysical parameter from a core sample (1), in particular in the oil sector, characterized in that it comprises, during an operation of core drilling with a sampler (2);

arranging, substantially fixed relative to the sampler (2), a sensor (3) for detecting and/or measuring said parameter, directly downstream of an exit orifice (5) of the sampler (2) relative to the direction of withdrawal of the core sample (1), in the vicinity of the withdrawal path of the core sample (1);
detecting and/or measuring values of the parameter at at least one location on the core sample (1) while the latter is being withdrawn from and/or moved back in the sampler (2);
and
processing of the detected and/or measured values of the parameter, in order to store them in memory and/or use them immediately.

1 more element

A device for detecting and/or measuring at least one geophysical parameter from a core sample (1), in particular in the oil sector, characterized in that it includes:

a hollow body (10) having two openings (11, 12) situated opposite one another along a longitudinal axis (13) of the hollow body (10), and a free passage (14) extending between the two openings (11, 12), the two openings (11, 12) and the free passage (14) being arranged so that a core sample (1), enclosed in an inner tube (15) of a sampler (2), can pass freely from one opening to the other (11, 12) through the hollow body (10);
fixing means (16) for releasably fixing, optionally with defined play, the hollow body (10) to an outer tube (17) of the sampler (2), at the end (22) of the latter through which a core sample (1) enclosed in an inner tube (15) is extracted, so that the hollow body (10) is, at least for the most part, situated in the extension of the outer tube (17), the longitudinal axes (13 and 18, respectively) of the hollow body (10) and of the sampler (2) being substantially coaxial;
and
at least one sensor (3, 53) for detecting and/or measuring a geophysical parameter to be evaluated from a core sample (1) to be withdrawn from the sampler (2), this detection and/or measuring sensor (3, 53) being fixed to the hollow body (10) in such a way that it is arranged facing the core sample (1) enclosed in said inner tube (15) when this core sample is in the aforementioned free passage (14).

1 more element

Dependencies are inferred from the claim text.

Method and device for detecting and/or measuring at least one geophysical parameter from a core sample

Life of this patent

Method and device for detecting and/or measuring at least one geophysical parameter from a core sample

Life of this patent

Abstract

Claims31