Abstract: The present invention belongs to the field of geological exploration and specifically relates to the fault characterization method and system for precise navigation of deep oil and gas based on image fusion, aiming to solve the problem that faults in deep formations are difficult to characterize with conventional seismic interpretation methods. The present invention includes: obtaining amplitude gradient images by calculating amplitude gradient vectors; calculating dip attribute images based on the enhanced seismic data; fusing gradient amplitude attribute fault confidence region with dip angle attribute data volume that defines the fault position through a hierarchical wavelet transform method to obtain a superimposed fault attribute map; dividing bead-like structures based on superimposed fault attribute maps; calculating the score of branch fault data points based on the center point position of bead-like structures, and dividing and analyzing the dominant fault areas.

Abstract: Disclosed is a synchronization method for an MWD mud pulse telemetry system. The method comprises: determining a synchronous training sequence on the basis of a frame structure of downhole sent data; constructing a correlation between the down-hole sending synchronous training sequence waveform and the uphole synchronous training sequence local waveform by means of the irrelevance of the trigonometric function; and performing correlation calculation on the synchronous training codeword waveform, which is received uphole and is subjected to the first modulation, and the synchronous training sequence local waveform, which is subjected to the second modulation, so as to obtain a correlation curve, and finding a synchronous position by means of the correlation curve.

Abstract: The present invention provides a processing method and device for data of a well site test based on a knowledge graph. The processing method for the data of the well site test based on the knowledge graph comprises: carrying out format identification on received historical data of the well site test to generate format identification results; establishing a mind map according to the format identification results; generating the knowledge graph of the data of the well site test according to the mind map; and processing the historical data of the well site test and new data of the well site test according to the knowledge graph.

Abstract: The present invention belongs to the field of treatment for data identification and recording carriers, and specifically relates to a method and system for analyzing filling for a karst reservoir based on spectrum decomposition and machine learning, which aims to solve the problems that by adopting the existing petroleum exploration technology, the reservoir with fast lateral change cannot be predicted, and the development characteristics of a carbonate cave type reservoir in a large-scale complex basin cannot be identified. The method comprises: acquiring data of standardized logging curves; obtaining a high-precision 3D seismic amplitude data body by mixed-phase wavelet estimation and maximum posteriori deconvolution and enhancing diffusion filtering. According to the method and the system, the effect of identifying the development characteristics of the carbonate karst cave type reservoir in the large-scale complex basin can be achieved, and the characterization precision is improved.

Abstract: The present invention belongs to the field of treatment for data identification and recording carriers, and specifically relates to a method and system for analyzing filling for a karst reservoir based on spectrum decomposition and machine learning, which aims to solve the problems that by adopting the existing petroleum exploration technology, the reservoir with fast lateral change cannot be predicted, and the development characteristics of a carbonate cave type reservoir in a large-scale complex basin cannot be identified. The method comprises: acquiring data of standardized logging curves; obtaining a high-precision 3D seismic amplitude data body by mixed-phase wavelet estimation and maximum posteriori deconvolution and enhancing diffusion filtering. According to the method and the system, the effect of identifying the development characteristics of the carbonate karst cave type reservoir in the large-scale complex basin can be achieved, and the characterization precision is improved.

Abstract: The present invention provides a processing method and device for data of a well site test based on a knowledge graph. The processing method for the data of the well site test based on the knowledge graph comprises: carrying out format identification on received historical data of the well site test to generate format identification results; establishing a mind map according to the format identification results; generating the knowledge graph of the data of the well site test according to the mind map; and processing the historical data of the well site test and new data of the well site test according to the knowledge graph.

Abstract: The present application provides a double-table vibration testing device. The device includes two auxiliary devices and two vibration devices; each auxiliary device includes a lifting apparatus which is provided with a lifting portion; and a sliding member which is assembled on the lifting portion and slides relative to the lifting portion in a longitudinal direction. A drilling tool (an object to be tested) is held by the two auxiliary devices, so that the weight of the drilling tool does not exceed the maximum load-bearing capacity of the vibration devices. Therefore, the vibration devices are not easily damaged, and the drilling tool is not easy to overturn in the vibration testing process.

Abstract: The present invention belongs to the field of treatment for data identification and recording carriers, and specifically relates to a method and system for evaluating the filling characteristics of a deep paleokarst reservoir through well-to-seismic integration, which aims to solve the problems that by adopting the existing petroleum exploration technology, the reservoir with fast lateral change cannot be predicted, and the development characteristics of a carbonate cave type reservoir in a large-scale complex basin cannot be identified. The method comprises: acquiring data of standardized logging curves; obtaining a high-precision 3D seismic amplitude data body by mixed-phase wavelet estimation and maximum posteriori deconvolution and enhancing diffusion filtering. According to the method and the system, the effect of identifying the development characteristics of the carbonate karst cave type reservoir in the large-scale complex basin can be achieved, and the characterization precision is improved.

Abstract: The present invention discloses a device for performing temperature correction on an induction logging tool and deep stratum environmental simulation, including: a box body, configured to accommodate the induction logging tool and a deep stratum environmental simulation system; an air channel, configured to make heated air fill the box body; a circulating fan, configured to make the heated air enter the air channel; an electric heater, configured to heat air; a temperature controller, configured to control power of the electric heater; the deep stratum environmental simulation system, configured to simulate lithological and fluid situations in different stratum environments; a data collection system, configured to collect, store, process, and display a signal in real time; and a control unit, configured to control operation of the entire device.

Abstract: A construction process for quickly and integrally replacing a damaged pavement slab without suspending flights of civil aviation is provided according to embodiments of the present application, including: a first stage: reinforcing a foundation of a damaged pavement slab by grouting; and a second stage: integrally replacing the damaged slab with early-strength and quick-drying concrete. The construction process of fast overall replacement of a damaged pavement slab in civil aviation non-suspend construction provided by the embodiments of the present application solves the limitations of the traditional pavement slab repair process well.

Abstract: The present disclosure provides an earthquake evaluation method based on multi-type geophysical data.

Abstract: An acoustic while drilling receiving transducer array adopts a full-digital structure and a non-oil-filled rubber encapsulation arrangement mode, and the full-digital device of the acoustic while drilling receiving transducer array includes first modules, configured to carry out acoustic-to-electric conversion on weakly received acoustic signals of strata; second modules, configured to carry out amplification, filtering, gain control and digital-to-analog conversion on the weakly received acoustic signals; and a third module, configured to control interfaces of the device and convert external input and output signals.

Abstract: A mounting and demounting control system is used for installing a radioactive source in nuclear logging instruments. In this system, a tail end of a truss manipulator is fixedly provided with a worktable through a bolt, a left side of an upper surface of the worktable is provided with a source capsule mounting and demounting manipulator, a right side is provided with a compression screw mounting and demounting manipulator, and the upper surface of the worktable close to the inner side of the two manipulators is respectively provided with opposed photoelectric sensors through bolts; four corners of the truss manipulator are fixed to a support through bolts, a beam is fixed between two legs at the front side of the support through bolts; and a positioning device is placed near the front of the support, and an upper part of positioning device is fixedly provided with an instrument.

Abstract: A mounting and demounting control system is used for installing a radioactive source in nuclear logging instruments. In this system, a tail end of a truss manipulator is fixedly provided with a worktable through a bolt, a left side of an upper surface of the worktable is provided with a source capsule mounting and demounting manipulator, a right side is provided with a compression screw mounting and demounting manipulator, and the upper surface of the worktable close to the inner side of the two manipulators is respectively provided with opposed photoelectric sensors through bolts; four corners of the truss manipulator are fixed to a support through bolts, a beam is fixed between two legs at the front side of the support through bolts; and a positioning device is placed near the front of the support, and an upper part of positioning device is fixedly provided with an instrument.

Abstract: An acoustic while drilling receiving transducer array adopts a full-digital structure and a non-oil-filled rubber encapsulation arrangement mode, and the full-digital device of the acoustic while drilling receiving transducer array includes first modules, configured to carry out acoustic-to-electric conversion on weakly received acoustic signals of strata; second modules, configured to carry out amplification, filtering, gain control and digital-to-analog conversion on the weakly received acoustic signals; and a third module, configured to control interfaces of the device and convert external input and output signals.

Abstract: An electrode-type near-bit wireless short-distance transmission modulation method includes the steps of by a near-bit measuring tool, measuring parameters, and acquiring parameter information, and packing the parameter information into a data packet, and transmitting the data packet to a transmission processor part; by the transmission processor part, performing binary frequency shift keying modulation on the data packet, and according to a set transmission power and driving source power, passing the modulated data packet through an amplifying circuit and a driving circuit, and then loading the modulated data packet to positive and negative electrodes of a transmitter; and by the positive and negative electrodes of the transmitter, transmitting the modulated data packet passed through the amplifying circuit and the driving circuit to a receiver, so as to realize electrode-type wireless short-distance transmission modulation.

Abstract: In a method for acquiring data of azimuthal acoustic LWD, when an acoustic LWD instrument rotates with a drilling tool at a certain depth, data is acquired by adopting an azimuthal equal-interval mode: a well circumference is divided into m sectors by azimuthal intervals ??, when a toolface angle of the acoustic LWD instrument is located in the kth sector, an acoustic transmitting source is controlled to transmit an acoustic signal, and an acoustic receiver measures the acoustic signal, digitizes it and then stores it as data in the kth sector; and the data is acquired for each sector in turn, and after the data is acquired in each sector for N times, the data acquisition at the current depth is completed. Meanwhile, as the drilling tool rotates and drills, the instrument acquires acoustic data at different depths and processes it to achieve azimuthal acoustic imaging.

Abstract: An apparatus for measuring gravity acceleration of a drilling tool comprises sensors and a measurement circuit. The sensor comprises a three-axis gravity accelerometer, a reference measurement sensor and a temperature sensor. The three-axis gravity accelerometer measures acceleration component signals in three mutually orthogonal directions, and the reference measurement sensor generates a signal that varies with rotation and is not affected by vibration or shock to serve as a reference signal. The temperature sensor measures the temperature in the apparatus to compensate the temperature effect of the gravity accelerometers. The measurement circuit acquires output signals of the sensors and performs cross-correlation processing on the accelerometer components using the reference signal to extract gravity acceleration signals so as to eliminate centrifugal acceleration, vibration, shock and other interferences generated by rotation.

Abstract: A near-bit wireless constant current short-distance transmission device has an emission part and a receiving part. The emission part modulates a signal and then wirelessly transmits the modulated signal to the receiving part. The emission part transmits an emission signal into a stratum according to a set rated emission constant current value, and dynamically monitors and adjusts the rated emission constant current value of the emission signal to obtain stable emission power.

Abstract: A near-bit wireless constant current short-distance transmission device has an emission part and a receiving part. The emission part modulates a signal and then wirelessly transmits the modulated signal to the receiving part. The emission part transmits an emission signal into a stratum according to a set rated emission constant current value, and dynamically monitors and adjusts the rated emission constant current value of the emission signal to obtain stable emission power.