SU195144A1 - DEVICE FOR AUTOMATIC CONSTRUCTION OF SEISMIC CUTS - Google Patents

Description

There are known devices for the automatic construction of seismic sections, which contain a reproduction unit of seismograms with a magnetic drum, a head unit and an electronic switchboard, a calculating device, a plotter in the form of a cathode-ray tube, a photo carrier and a recording device.

The proposed device is characterized in that between the reproducing unit and the recorder, an auxiliary electron beam tube is constructed for building the diffraction isochron and an irreducible electron beam tube for adding the diffraction isochrons projected onto its screen by accumulating charges over time and reading the total signals to convert them into electrical voltages connected to the analog-to-digital converter and the modulators of the recorder tubes and the video monitor.

This allows to increase the depth of research, the quality and speed of construction of the cuts, to carry out continuous visual inspection, as well as to ensure the study of the relative physical properties of the medium.

heads, an electronic switch 2 and a sweep generator 3, a computing device 4 defining, for each seismogram trace at given times, the diffraction isochropes coordinates, a section builder in the form of a two-dimensional coordinator on the electron beam tube 5, the lens 6, the transmitting electron beam tube 7, scan unit 8 , a video electro-ray tube 9, an analog-to-digit converter 10, a recorder Y /, a reception electron-beam tube 12, a lens 13 and a photo carrier 14.

By rotating the drum with a seismogram with

seismic signals from all lines of a seismogram or a number of seismograms periodically reproduce, at a rate that is up-to-date against recording. Using an electronic switch 2 reproducible

the signals are reduced to one channel with separation in time. The light flux coming from the screen of the coordinator tube 5 is modulated in brightness. The beam of this tube is deployed along the diffraction isochrone, which is continuously calculated by the counting device as sweep stresses (currents) and projected by the lens 6 onto the target of the transmitting tube 7, where isochroic diffraction is added for each point

time (as the isochron is built) of electrical charges. The resulting incision in the form of a potential relief is read from the target when the beam is scanned by currents from the scanner unit and transferred to the screen of the video monitoring tube 9, which allows the arp} to frequently replay seismograms to select the parameters of the device directly during the construction of the cuts. In this case, it is also possible to select the velocity characteristic of the medium. At the same time, the photocarrier image is recorded and a number of vertical sections are converted into digital form using a 1G converter. The codes of the numbers are recorded in the recorder 11. The image is transferred to the photo carrier by the objective 13 from the screen of the cathode ray tube 12 connected in parallel with the tube 9.

P re d m ate and r a b c tel i

A device for the automatic construction of seismic sections, consisting of a reproduction unit containing. Magnetic

a drum with a head unit and an electronic co.mutator, a calculating device, calculating ryuordinates of diffraction isochron, a section builder in the form of an electron-beam tube, a photographic carrier, and a recording device, characterized in that visual control

for selecting the mode of operation of the device, selecting the law of velocity in the process of building cuts and measuring the amplitudes of images of reflecting boundaries on cuts with high accuracy, between the playback unit

the seismograms and the recorder included an auxiliary electron tube tube for constructing isochroic diffraction and a transmission electron tube tube for adding the diffraction isochrone projected onto its screen by accumulating charges over time and reading the total signals to convert them into electrical voltages connected to an analog-to-digital converter the modulators of the recorder tubes and the video monitor.