An electroseismic integrated monitoring method comprises: transmitting a current signal including at least one of: a multi-frequency current signal or a single-frequency current signal, the frequency of the current signal being determined according to a proppant, and the proppant performs telescopic vibration under excitation of the current signal at a predetermined frequency. An acoustic wave signal received by a seismic sensor. The acoustic wave signal is an acoustic wave signal generated for the current signal to excite the proppants to perform telescopic vibration. A vibration position of the proppant at a fracturing layer is determined according to the acoustic wave signal. The vibration position is used to determine a basis for propped fracture characteristics. An electrostrictive material is used as the proppant, so that the position of the proppant can be monitored by means of microseism.

A system and method for deep detection of petroleum and hydrocarbon deposits is disclosed. The system includes a sensing array that includes a plurality of electrodes positioned in the ground at a testing site, a sensing device, and a system for generating a seismic event that generates below-ground signals that are received by the sensing array. The system enables detection and depth determination of underground features such as petroleum and hydrocarbon deposits at greater depths compared to conventional systems.

Apparatus having a focused transducer and methods of operating a focused transducer downhole in a well can provide high resolution downhole imaging. In various embodiments, a focused transducer is used for imaging downhole in a well in which the imaging is based on a seismoelectric effect. In various embodiments, a focused transducer is used for imaging downhole in a well in which the imaging is based on an electroacoustic effect. Additional apparatus, systems, and methods are disclosed.

Systems, methods, and computer programs for monitoring production of fluids from a subterranean formation includes receiving, from a first sensor array at a first time, a first set of electromagnetic signals generated by an electroseismic or seismoelectric conversion of seismic signals caused, at least in part, by the production of fluid from the subterranean formation; receiving, from the first sensor array at a second time, a second set of electromagnetic signals generated by an electroseismic or seismoelectric conversion of seismic signals caused, at least in part, by the production of fluid from the subterranean formation; and determining one or more reservoir properties based, at least in part, on the first and second sets signals received from the first sensor array. The first sensor array are arranged to monitor the production operation

An integrated acoustic and induction logging tool enables efficient logging operations and reduces logging string length. In some of the disclosed embodiments, an integrated acoustic and induction logging tool includes a mandrel compatible with acoustic logging operations and induction logging operations. The integrated acoustic and induction logging tool also includes an acoustic logging transducer set and an induction logging coil set, where a plurality of transducers of the acoustic logging transducer set are interspersed among a plurality of coils of the induction logging coil set along the mandrel. A related assembly method includes obtaining a mandrel compatible with acoustic logging and induction logging. The method also includes assembling an acoustic logging transducer set and an induction logging coil set along the mandrel, where a plurality of transducers of the acoustic logging transducer set are interspersed among a plurality of coils of the induction logging coil set along the mandrel.

The present disclosure relates to methods and apparatuses for evaluating a porous earth formation. The method may include estimating a value of at least one parameter of interest of the earth formation using a signal indicative of acoustic waves generated at a metallic surface (200) in communication with the earth formation when the metallic surface (200) is exposed to a constant magnetic field (250) normal to the metallic surface (200) and a harmonic magnetic field (260) along the metallic surface. The signal may be generated by a sensor responsive to the acoustic waves. The apparatus may include a first magnetic source (230) configured to generate a constant magnetic field (250), a second magnetic source (240) configured to generate a harmonic magnetic field (260), and a sensor (220) configured to generate a signal in response to acoustic waves.

Systems, methods, and computer programs for monitoring production of fluids from a subterranean formation includes receiving, from a first sensor array at a first time, a first set of electromagnetic signals generated by an electro seismic or seismoelectric conversion of seismic signals caused, at least in part, by the production of fluid from the subterranean formation; receiving, from the first sensor array at a second time, a second set of electromagnetic signals generated by an electroseismic or seismoelectric conversion of seismic signals caused, at least in part, by the production of fluid from the subterranean formation; and determining one or more reservoir properties based, at least in part, on the first and second sets signals received from the first sensor array. The first sensor array is arranged to monitor the production operation.

A Stoneley wave is generated in a borehole in a saturated porous earth formation. Measurements are made of the velocity of motion of the formation and the fluid in the formation. The difference in the velocities is indicative of formation permeability. An additional measurement of the electric field at the borehole wall enables determination of the electroacoustic constant.