Patent ID: 9027670
Filing Date: 2015-05-12
Classification: E21B,G05B

Abstract:
1. A method for managing a drilling operation in a subterranean formation, comprising: generating, by a first sensor of a bottom hole assembly (BHA) and during the drilling operation, a first time based data log representing a borehole parameter along a drilling trajectory; generating, by a second sensor of the BHA during the drilling operation, a second time based data log representing the borehole parameter along the drilling trajectory; determining, by a computer processor of the BHA and during the drilling operation, a time shift by comparing the first time based data log and the second time based data log, wherein offsetting the first and second time based data logs by the time shift maximizes a correlation factor of the first and second time based data logs; determining, within a pre-determined time period from generating the first and second time based data logs, a drilling speed based on the time shift and a pre-determined distance between the first sensor and the second sensor; and performing the drilling operation based on the drilling speed.