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EVALUATION OF ROCK PHYSICAL PROPERTIES FROM DRILL SOUNDS THROUGH MINIMIZING THE EFFECT OF THE DRILL BIT ROTATION
EVALUATION OF ROCK PHYSICAL PROPERTIES FROM DRILL SOUNDS THROUGH MINIMIZING THE EFFECT OF THE DRILL BIT ROTATION
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机译:通过最小化钻头旋转的效果来评估钻孔声音的岩石物理性质
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摘要
Systems and methods include a computer implemented method for evaluating rock physical properties. Drilling acoustic signals are received in real time during a drilling operation through rock at a drilling location. Transformed data is generated in a frequency domain from the drilling acoustic signals. The transformed data includes frequency and amplitude information for the drilling acoustic signals. De-noised transformed data is generated from the transformed data by filtering noise including background noise generated in a recording system and top drive rotation generated traces. A lithological significant frequency range that includes de-noised significant data points is determined from the de-noised transformed data. Physical properties of the rock are determined in real time using drill bit rotation rates and the amplitudes of the de-noised significant data points.
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