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AssigneeMobil Oil Corporation
InventorEve S. Sprunt
Estimating the term…
A coring tool is lowered to the bottom of a wellbore through a subsurface formation. A coring bit at the lower end of the coring tool draws a core sample of the subsurface formation at the bottom of the wellbore into the coring tool. A coring barrel is positioned along the coring tool above and in juxtaposition with the coring bit. The core sample is drawn into a hollow cylindrical split member within the coring barrel, such member being split into two halves in an axial direction and comprised of a material effectively transparent to nuclear radiation. A wireline raises the split member containing the core sample upward through the coring tool to the surface of the earth. The core sample is tested for a nuclear radiation characteristic through the nuclear radiation transparent material of the split member at the well site. The split member is then reused to obtain a plurality of cores from the subsurface formation.
Apparatus for obtaining and evaluating a core sample from a subsurface formation below the bottom of a wellbore at a well site, comprising
A method for measuring a nuclear radiation characteristic of a core sample from a subsurface formation, comprising the steps of:
Dependencies are inferred from the claim text.