The Application Of Digital3C Seismic Exploration Technology In Bei39Block Of Hai'laer Basin

The application of digital3C Seismic exploration technology in bei39block of Hai'laerbasin has improved the converted wave's s/n greatly. The first is to adopt the reasonableobservation system design, followed by the introduction of appropriate well depth, charge,and array well shooting. The test of3C survey has acquired good p-wave and converted wave.There is much difference in optimal shooting parameters from p-wave and converted wavesurvey, which is caused by the difference of estimate's criterion. In the following respects,such as the width of frequency band, dynamic range, section's s/n and interlayer informationand so on, digital geophoner is better than analog geophone. But the s/n of raw shot acquiredby digital geophone is lower, there is only one geophone every channel in3C survey, and thestrong environmental noise isn't weakened well, which will influence its good dynamic range.Seismic exploration with digital geophone should adopt small size and high folds.3Cmicro-seismic logging can provide transverse wave information, it is more reliable thangeneral logging. The velocity interface of S-wave is good relate to near surface lithologiccharacter and ghosting interface. It can provide more dependable data in designing well depth,not only improve the accuracy of well depth designing, but also save the exploration cost.Compared the analog signals and the digital signals, in purpose of gathering moreeffective information so as to improve accuracy, improve data quality.Provide reasonable seismic data interpretation information for petroliferous basin andaccuracy Geological interpretation.