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Fracture characterization by interferometric drillbit imaging, time reversal imaging of fractures using drill bit seismics,
Fracture characterization by interferometric drillbit imaging, time reversal imaging of fractures using drill bit seismics,
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机译:通过干涉式钻头成像进行断裂表征,使用钻头地震仪对断裂进行时间反转成像,
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摘要
Apparatus, systems, and methods may operate to receive radiated energy as scattered energy after the radiated energy interacts with a geologic formation, wherein the scattered energy is received at a sub-surface multi-channel sensor array that operates to transform the scattered energy into received signals, and wherein the radiated energy is provided by a sub-surface source of elastic energy; and to identify discontinuous features in the geologic formation by interferometric comparison of the received signals as elastic signals and/or electromagnetic signals among some sensors in the sensor array, or by time-reversal propagation of the received signals as elastic and/or electromagnetic signals in a numeric model of a volume of the geologic formation. Additional apparatus, systems, and methods are disclosed.
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