Application Of 3D Continous Coverage Processing And Pre-stack Migration Technolage In JILIN Exploration Area

3D continuous coverage Processing And Pre-stack Migration Technolage is collecting multi-3-dimensional seismic data in different periods within the regional to re-block joint processing, eliminating the old data collection between the various blocks of factors, energy, frequency, amplitude and other differences exist, and in this on the basis of pre-stack migration processing.This paper, for the southern basin Daqingzijing, Qiananbei, Qianxibei contiguous three-dimensional block for pre-stack migration processing technology, the aim of establishing a contiguous three-dimensional pre-stack processing for the southern basin completed more than 7,000 sq km high-precision three-dimensional seismic data to provide technical basis for joint processing.Its main contents include the joint processing method and the method of prestack migration on two aspects. The main purpose of joint processing solution between the acquisition of the block factors, energy, frequency and amplitude differences that exist make it consistent, to provide high-quality prestack migration prestack data volume, the specific content, including bin averaging and all technology, surface consistent processing techniques (including amplitude and frequency of processing consistency, consistency processing phase), static correction, pre-stack technology to improve signal to noise ratio; offset prestack migration parameters of the main research (including the aperture and speed, etc.) of the selection methods and the establishment of migration velocity field methods.By using three-dimensional contiguous prestack migration processing, treatment can block boundary effect caused by the elimination of the block between the amplitude, frequency, phase agree to reprocess old data after the three-dimensional quality of the original sub-block processing information significantly improved compared, joint processing of information in the application after the geological interpretation and evaluation of effectiveness to achieve an acquisition, facilitate evaluation, lithology prediction and the overall speed of research, but also conducive to give full play to the existing three-dimensional field the potential of information and reduce exploration costs, development of oil and gas exploration and resource evaluation is important.