Born法叠前深度偏移在东濮地区的应用

Application of 3D prestack depth migration with high-precision Born method in Dongpu region

随着勘探难度的进一步加大,叠前深度偏移成像技术已成为地球物理领域高度关注的技术之一。特别是随着高效率计算机并行化技术的发展和应用,如何使叠前深度偏移成像方法更好地为复杂构造、岩性和地层圈闭油气藏的勘探与开发服务已是当务之急。为了顺应形势的发展,文中基于高精度三维局部扩展的Born法叠前深度偏移方法研究了方便实用的偏移速度建模方法,并将该方法应用于东濮地区的实际成像处理中,通过与时间偏移成像的结果相对比,进一步体现了叠前深度偏移的实用性和优越性。

With the development of exploration difficulty, prestack depth migration imaging technology has become one of key technologies which were paid more attention in geophysical study field. Especially with the development and application of prestack depth migration and parallel technology of high-efficiency calculator, it has become an urgent affair that how the prestack depth migration imaging methods are applied for exploration and exploitation of complex structures and lithologic reservoirs. This paper researches a convenient and practical migration velocity modeling method, which was used to the imaging processing in Dongpu region, based on the prestack depth migration imaging technology of high-precision 3D local expanded Born method.