鄂尔多斯盆地黄土塬滚动非纵资料处理解释技术及效果

Processing and interpretation technology and its effect of snowballing broadside-spread seismic data in loess tableland areas of Ordos Basin

为满足鄂尔多斯盆地黄土塬低渗透率、低丰度、低产特点的油气藏勘探开发需求，加之黄土塬区沟壑纵横的地貌特征限制导致黄土塬三维地震采集成本高居不下，考虑经济技术一体化。勘探效果好、成本相对较低的滚动非纵地震采集技术应运而生，为获得较好质量的三维数据体提供了较为可靠的资料基础。本文从三维处理理念出发，探索滚动非纵的三维静校正、剩余静校正、保真保幅去噪、叠前及叠后多次插值技术．同时以全三维解释为主线，采用地震属性技术．结合三维可视化技术，精细刻画了研究区储层顶面构造形态及砂体展布规律，地质成果满足了储层评价开发需求。

In order to satisfy the requirements of hydrocarbon exploration and development in the loess tableland areas of Ordos Basin with features of low permeability, low abundance and low productivity reservoirs, and being restricted by the geographic features of criss -cross ravines and gullies in the loess tableland areas, the cost of 3D seismic acquisition in such areas is always at a high level. Thus, taking the integration of economy and technology into consideration, a new snowballing broadside-spread seismic acquisition technology emerges as the times require, with good effect of exploration and relatively low cost. It lays a reliable data foundation for obtaining better quality 3D data volumes. Starting from the notion of 3D processing, the authors explore the relevant technologies of snowballing broadside-spread seismic data： 3D static correction, residual static correction, fidelity amplitude-preservation and denoising, prestack and poststack multi-interpolation technologies. Moreover, taking full 3D interpretation as the principal line, adopting seismic attribute technology, and with the help of 3D visualization technique, the structural form of the reserw^ir top and sand distribution law of the study area were carefully described. The geological achievements can meet the demands of reservoir evaluation and development.