Patent ID: 6419032
Filing Date: 2002-07-16
Classification: E21B

Abstract:
An improved drill bit for use in drilling operations in a wellbore, comprising:a bit body including a cutting structure carried thereon; a coupling member formed at an upper portion of said bit body; at least one bit condition sensor system for monitoring at least one bit condition of said improved drill bit during drilling operations; at least one semiconductor memory, located in and carried by said bit body, for recording in memory data obtained by said at least one bit condition sensor; and wherein said at least one bit condition sensor system includes: (a) an electrical sensor component which has at least one electrical attribute which changes in response to changes in said at least one bit condition; (b) a monitoring circuit component for monitoring changes in said at least one electrical attribute of said electrical sensor component as changes occur in said at least one bit condition; and (c) a sampling circuit for sampling said monitoring circuit and recording data in said at least one semiconductor memory.