Abstract:It should demand acquiring real-time far-field wavelet of arigun array when considering stability of airgun array and carrying out deterministic wavelet deconvolution in field acquisition.Currently,the airgun array used in offshore seismic exploration is composed from single gun and coherent gun.It should first record near-field wavelet of array unit(all single gun and coherent gun) and then use software to simulate and compute far-field wavelet according to synthetic principle of far-field wavelet in coherent situation.The stability of array is evaluated by autocorrelation and cross-correlation processing of far-field wavelet of airgun array in each shooting;in seismic data processing,the more accurate inverse wavelet operator is computed by using far-field wavelet and then the deterministic deconvolution processing is implemented.The paper used practical cases to introduce how to use far-field wavelet acquired to carry out the evaluation of airgun stability and effect of seismic data deconvolution processing.