Patent · US Active

Coring apparatus and methods to use the same

US8752652B2 · kind B2 · utility

2Cited by

16References

25Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

Steven E. Buchanan · Pearland, US
Lennox Reid · Houston, US
Rachel Lavaure · Le Plessis-Robinson, FR

Key dates

Filing date	Sep 12, 2011
Grant date	Jun 17, 2014
Priority date	—
Expiry date	Nov 4, 2031

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B25/16
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An apparatus for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation, the apparatus comprising a coring bit assembly, a first motor operatively coupled to the coring bit assembly via a gear box to rotationally drive the coring bit assembly, and a second motor to drive the coring bit assembly into the formation while the coring bit assembly is rotated by the first motor, wherein the coring bit assembly comprises a feature to permit the coring bit assembly to be broken when the coring bit assembly becomes stuck in the formation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.