Back to results
US 5,667,025 AGranted
Articulated bit-selector coring tool
AssigneeSchlumberger Technology Corporation
InventorsJohn G. Haessly, Duane F. LaDue
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSchlumberger Technology Corporation
InventorsJohn G. Haessly, Duane F. LaDue
Estimating the term…
A multiple coring bit tool and method for taking multiple core samples of a formation traversed by a borehole in one well logging run. In this tool, multiple coring bits are used to cut the core samples. One bit is used to cut each sample. Once the core sample has been taken, the cutting bit containing the core sample is stored. For the next core, a new cutting bit is used and that cutting bit contains that core sample once the coring process is completed. Multiple cutting bits are held in two or more chambers prior to use in the coring process. The bits in one chamber are used to cut core samples from formation location above a certain hardness and the bits in the second chamber are used to cut cores in formations below a certain harness. Two other chamber are incorporated in the tool for storage of the cutting bits once the core sample has been obtained. The sequence of the sample is tracked thereby permitting the identification of any core sample and the location in the formation from which the core sample was taken.
A multiple cutting bit tool for cutting sample cores of an earth formation from a borehole traversing said formation wherein a different bit is used to cut and hold each core sample and wherein multiple core samples can be taken in one borehole run comprising:
A multiple cutting bit coring tool for cutting sample cores from an earth formation traversed by a borehole, said multiple cutting bits enabling multiple core samples to be taken in one borehole run comprising:
An apparatus for selecting a cutting bit from a plurality of cutting bits during the coring process of an earth formation traversed by a borehole comprising:
An apparatus for retrieving a cutting bit from a plurality of cutting bits during and disposing of said bit after the coring process of an earth formation traversed by a borehole comprising:
Dependencies are inferred from the claim text.