摘要 |
Methods and systems for detecting downhole bit dysfunction in a drill bit penetrating a subterranean formation comprising receiving a plurality of drilling parameters characterizing a wellbore drilling operation and calculating bit aggressiveness (μ) at each of a plurality of points during drilling, wherein each point corresponds to time, depth, or both. A depth-of-cut (DOC), time derivative of bit aggressiveness (µ̇), calculated as dμ/dt, or both, is calculated at each of the plurality of points. A two-dimensional data representation of the plurality of points, comprising μ in one dimension and DOC, μ̇, or both, in another dimension is created. Data features are extracted from the two-dimensional data representation and downhole bit dysfunction is identified by comparing the extracted data features with predefined criteria. |
申请人 |
EXXONMOBIL UPSTREAM RESEARCH COMPANY;WANG, LEI;BAILEY, JEFFREY, R.;O'DONNELL, BRIAN, J.;CHANG, DAR-LON;PAYETTE, GREGORY, S. |
发明人 |
WANG, LEI;BAILEY, JEFFREY, R.;O'DONNELL, BRIAN, J.;CHANG, DAR-LON;PAYETTE, GREGORY, S. |