36 results about "Wave base" patented technology

The invention discloses a method for quantitatively and qualitatively detecting root defects when the butt-jointed seam of the prior thick-wall (the thickness is more than 40mm) big-diameter tube can only be detected from a single side by adopting one-vertical one-horizontal high-frequency and narrow-pulse double probes based on a digital ultrasonic defect detector. For a thin-wall tube or tube on which the two-side detection is allowed, the digital ultrasonic wave based defect detector also can be used in reference. The horizontal wave inclined probe is moved, a main acoustic beam can generate the strongest diffracted waves when hitting the top part of the root defects such as crack, incomplete fusion, lack of fusion and the like or root shape defect aberration serious parts such as welding beading, inward depression, misaligned edges and the like, and the vertical wave straight probe on the welding seam receives the strongest diffracted waves; the horizontal wave inclined probe can read out the depths of top points of the defects, and the thickness of the wall of parent metal on the side of the inclined probe can be measured by moving the vertical wave straight probe; therefore, the quantitation on six types of typical root defects is realized; and simultaneously, by combining the quantitative data such as heights and horizontal positions of the defects, which is measured by a one-vertical one-horizontal double probe strongest diffracted wave method, with the characteristics of the diffracted waves generated when the horizontal wave inclined probe rotates to detect, the qualitation on the six types of typical root defects is completed, thereby solving the problem that the root defects are difficultly judged when the butt-jointed seam of the thick-wall big-diameter tube can only be detected from the single side.

The invention provides a prediction method of development distribution of lacustrine high-quality source rock. The method comprises the following steps of by aiming at a main source layer section of atargeted region, (1) respectively recovering an ancient lake mode; (2) respectively defining the shallow lake and semi-deep lake-deep lake distribution range on the basis of deposition and/or sedimentation center, paleo-water-depth distribution and wave base depth; (3) respectively dividing each single well deposition organic phase type on the basis of deposition environment, the ancient lake mode, the organic matter abundance and the organic matter type, and then defining the plane distribution range of advantageous facies; (4) respectively determining a vertical distribution range of the high-quality source rock by using logging data; (5) respectively determining the transverse distribution change of the high-quality source rock by using earthquake data; and (6) respectively drawing development distribution patterns of the high-quality source rock on the basis of the advantageous facies plane distribution range, the high-quality source rock vertical distribution range and the high-quality source rock transverse distribution change. Therefore the concrete distribution of the lacustrine high-quality source rock of the target region, namely the prediction result of the lacustrine high-quality source rock can be obtained.

The invention discloses a three-dimensional ocean wave analogy method based on an ocean wave spectrum. The three-dimensional ocean wave analogy method based on an ocean wave spectrum includes confirming an observation time t and obtaining an ocean wave height at the moment, taking a relative calm moment of the ocean surface before the observation time t as an observation time 0 and obtaining an ocean wave height at the moment, deducing a relative correlation function of ocean waves based on considering the formation time history of the ocean waves and obtaining an attenuation weight function of the ocean waves through calculation, multiplying the ocean wave height of the observation time 0 by the attenuation weight function and superposing the result to the ocean wave height of the observation time t thus reflecting the influence of a previous moment ocean wave on the ocean wave of an observation time, changing an angle initial phase of an orientation spectral function of superposed ocean waves to imitate the changes of wind directions. Repeat the steps of the three-time dimensional ocean wave analogy method, and ocean superpositions of a plurality of moments are obtained and finally the imitation of ocean waves is obtained. The three-dimensional ocean wave analogy method based on ocean wave spectrum utilizes the steps to imitate the ocean waves. The imitated effect of the ocean waves is less in distortion compared with the prior art and fits with real ocean waves.

A ultrasonic device detecting a direction to an object includes: a transmitting element of a ultrasonic wave; first and second receiving elements; a diffraction wave phase detector; an initial phase memory for an initial phase of a diffraction wave; a sound speed detector; a phase correction amount calculator calculating a phase shift caused by a sound speed change and calculating a phase correction amount based on the phase of the diffraction wave, the initial phase and the phase shift; a phase correction element correcting a phase of the reflection wave based on the phase correction amount; and a direction detector for detecting the direction to the object based on a difference between corrected phases of the reflection wave received by the first and second receiving elements, a distance between the first and second receiving elements, and a wavelength of the transmission ultrasonic wave corresponding to a sound speed.

The invention discloses a tunnel advanced geological prediction method and a computer readable storage medium. The tunnel advanced geological prediction method comprises the steps: arranging a three-dimensional observation system on a tunnel face to realize three-dimensional seismic wave excitation and reception, and processing acquired data based on a deep learning algorithm to obtain the position of an abnormal body, wherein the step of processing the data based on the deep learning algorithm comprises the following sub-steps: rejecting bad track data from the acquired data based on an AlexNet convolutional neural network model algorithm, and filtering; identifying the first arrival wave based on a UNet convolutional neural network model algorithm, and estimating a direct wave speed; carrying out linear dynamic correction on the original data without the bad track data; carrying out equal travel time profile superposition on the data after linear dynamic correction; and carrying outreflection layer pickup on the superposed data. According to the tunnel advanced geological prediction method and the computer readable storage medium, the detection efficiency and the detection accuracy of the abnormal body can be improved.

The invention discloses a method for modulating temperatures of electromagnetic waves based on a surface plasma wave transmission distance. The method comprises the following steps of: arranging two parallel metal blades, namely a first blade and a second blade above the surface of an intrinsic semiconductor panel; transmitting the electromagnetic waves of which the frequency is lower than the plasma frequency of the intrinsic semiconductor panel from the outer side of the first blade to a clearance between the cutting edge of the first blade and the intrinsic semiconductor panel, and exciting surface plasma waves which are transmitted along the surface of the intrinsic semiconductor panel on the surface of the intrinsic semiconductor panel; and keeping the distance between the first blade and the second blade constant, and adjusting the temperature of the intrinsic semiconductor panel to ensure that the transmission distance of the surface plasma waves on the surface of the intrinsic semiconductor panel is changed and the intensity of the electromagnetic waves coupled at the cutting edge of the second blade is changed along with the variation of the transmission distance so as to modulate the electromagnetic waves. The method has the advantages that the method is small in temperature range, high in modulation speed, simple in hardware structure, easy to realize, and the like; and wideband electromagnetic waves can be modulated in a return-to-zero mode and a non-return-to-zero mode.

The invention discloses a method and device for expansion imaging of parameters under virtual terrain surface conditions in seismic data processing, which belongs to the technical field of reflection seismic data processing in seismic exploration. The method comprises the following steps: obtaining an included angle formed by an upgoing wave and a downgoing wave according to the coordinates of a shot point, a demodulator probe and a reflecting point; obtaining the coordinates of the exposed point of a normal line according to the included angle formed by the upgoing wave and the downgoing wave, the downgoing wave and the upgoing wave based on the conversion of a bipolar cylindrical coordinate system; calculating imaging distance and time correction according to the coordinate of the shot point, the coordinate of the exposed point, the coordinate of the reflecting point and the speed of the seismic wave at the reflecting point; calculating imaging time according to the imaging distance, the time correction, the distance between the reflecting point and the demodulator probe and the distance between the shot point and the demodulator probe; and obtaining an underground image according to the imaging distance and the imaging time through the imaging method based on the horizontal terrain surface. The invention can improve the accuracy for obtaining the underground image of the virtual terrain surface.

The invention discloses a joint positioning method of vertical and horizontal waves based on multi-perforation double difference, which comprises the following steps: 1) using the picked perforation micro-seismic signal vertical and horizontal wave travel time as an observation value, establishing a perforation signal relative travel time target equation for inversion and obtaining an anisotropicvelocity model; 2) utilizing micro-seismic event vertical and horizontal wave travel time as the observation value, inputting an initial positioning velocity model and carrying out inversion on a micro-seismic event spatial position according to the micro-seismic event anisotropic vertical and horizontal wave joint positioning target equation; 3) inverting the micro-seismic event spatial positionagain and obtaining a repositioned micro-seismic event spatial position and a corresponding corrected velocity model. According to the joint positioning method of vertical and horizontal waves based on multi-perforation double difference in the invention, the micro-seismic event radial and depth global error is further reduced, and the precision of positioning the micro-seismic event is improved.

The invention provides a controlled impact wave based injection increase method of a water injection well. The method comprises the steps that according to the water injection condition of the water injection well, a reservoir segment where water cannot be injected or water injection lacks is confirmed, impact wave parameters needed for an acting reservoir are selected according to geological dataand water injection historical data of the water injection well, and the positions of operation points of impact operation of impact waves and the number of times of operation of each point are set;controlled impact wave generation equipment is lowered to the position of the bottommost operation point of the water injection well; starting from the position of the bottommost operation point of the water injection well, the controlled impact wave generation equipment is utilized for impacting on the position of every operation point, after operation at the position of each operation point is finished, the controlled impact wave generation equipment is raised, and the controlled impact wave generation equipment moves to the position of the next to-be-operated point to implement operation; and after operation of each operation point is finished by the controlled impact wave generation equipment, injection increase to the water injection well is finished through impact waves. By means ofthe method, the segmented, selective and repeated impact function can be implemented on target segments.

A method of enhancing transmittance of waves according to the invention comprises the following steps: (a) Generating a plurality of waves each of which has random phase; (b) grouping randomly the plurality of waves into a first group and a second group; (c) introducing the waves onto a disordered medium by fixing phase of waves constituting the first group and varying phase of waves constituting the second group; (d) measuring intensity of the waves based on overlapped waves of the first group and the second group which penetrated the disordered medium according to the phase variation of waves constituting the second group; (e) obtaining phase having the maximum intensity according to the phase variation among intensities measured at the step (d); and (f) adjusting phase of the waves constituting the second group based on phase obtained at the step (e).