Investigation And Study Of Noise In Seismic Exploration In Shaybah Area Of Saudi Arabia

There are many factors will generate noise in the vibroseis production.The relevant seismic records will change accordingly if any changing of pilot or force signal,or some sudden strong noise was recorded before correlation.The primary task is to monitor the influence factors of these signal changes,the reason is due to produce and distinguish the mechanical equipment fault or the terrain,so it can take timely measures to eliminate the negative factors,to ensure the data quality.The surfaces of desert include sabkah and sand dune.Sabkah is plain and covered with deposit that is white and hard.Sand dune's elevation closed Sabkah always is 200 meters.Production program depend on bulldozers to cut the way.High density and high fold exploration are available because of using vibrators,it also improve production efficient and data quality,reduce effect to production of inconvenient surface and weak energy of single shot.Different noises can be recorded include random noise,pulse noise,sympathetic vibration,harmonic distortion,and so on.It vary with season and district.It can be recognized and depressed by research of noise's character and work mechanism.The noise will be wakened or used by research deeply.This paper concentrate on studying the character of noise and what reason caused the noise.Lots of field test and analysis had been carried out to find the right way to avoid the noise and attenuate noise if it is inescapable.Through all these research,many kinds of noise have been sort out,and a set of methods have been performed to enhance the S/N ratio.It will be a great significance for carrying out seismic acquisition in similar area in the future.