Research On The Characteristics Of High-efficiency Noise Collection And Its Suppression Method For Vibroseis

Since 2012,10 blocks of Xinjiang Junggar Basin has been vibroseis Efficiency Acquired. Full coverage has reached more than two thousand square kilometers, collection efficiency is greatly improved, which has played a crucial role to popularize the Junggar Basin high density acquisition technology. But VEA(vibroseis Efficient Acquisition) construction methods inevitably bring a source of mechanical interference noises that reduce the single-shot data quality.VEA technology to achieve wide azimuth, wide band, high density, improve the data quality, but Single-shot data as the basis of data processing, still need attention. How to maximize the weakening VEA noise, improve the quality of the Single-shot data? We select different terrains, different sources in Junggar basin, the construction ways of work area data as the research object, analyzing data noise characteristics, production methods and suppress noise processing experiment, and put forward the related knowledge and conclusions.This article first introduces the VEA technology development course and the present situation of collection technology in Junggar basin, the contrast VEA development situation at home and abroad, on the basis of this paper introduces the regular sampling method and efficient technology knowledge, to analyze the noise characteristics of sampling methods.In vibroseis and noise characteristics of production organization way, in view of the Junggar basin, the source to collect relevant data, the application of geophysical exploration sampling software at efficient KLSeisII Single-shot record under different production organization modes of the background noise amplitude frequency characteristics analysis and interference energy grade, and independent development of the software is used to analyze the VEA for efficient collection and the influence of the noise production organization way, and the noise of the efficient acquisition mode of production organization; Application of Eastern developed GeoEast processing system of vibroseis efficient multi-domain noise collected denoising experiment, put forward suitable for vibroseis in Junggar basin efficient acquisition Single-shot data denoising method, further weaken the efficient collection and noise.In this research, the first time Junggar Basin VEA mechanical noise characteristics are obtained; We get the vibroseis acquisition and processing integration reduces noise efficiently collect ideas and knowledge; And for the first time put forward to reduce vibroseis mechanical noise way of production organization. To get high quality data for VEA laid a certain foundation, as well as science, environmental protection, provides guarantee to the promotion and application of the mode of production.