青海红柳泉地震资料的重处理及效果

REPROCESSING SEISMIC DATA FROM HONGLIUQUAN REGION OF QINGHA1 PRORINCE

1. 地矿部石油物探研究所,南京210014;2. 青海石油管理局研究院,敦煌736202

Research Institute of Geuphysical Prospectiong for Petroleum, MGMR, Nanjing 210014)(Geophysical Research Institute, Qinghai Oil Manngemend Burean, Dunhang 736202

我们在IBM—3083计算机上对柴达木盆地红柳泉工区的9条地震测线资料进行了精细处理,目的是提高信噪比、分辨率和振幅信息的可信度,以便搞清断层分布和断块组合关系,进而弄清油储空间分布特征,为在本区增加探明储量提供可靠的基础资料。为此,从地质解释的要求出发,针对资料情况做了一系列三高处理及突出储层波组反射特征横向变化的精细处理,在剖面交点上做到了三闭合（即t₀,速度和振幅闭合）,达到了预期目的。根据处理和解释结果布置的钻孔见到了工业油流。

With the emphasis on improving S/N ratio, resolution and the truthfulness of amplitude information, we have carefully reprocessed the data from nine seismic lines in the Hongliuquan region of Qaidam Basin with the aid of an IHM -3083 computer so as to clarify the fault’s distribution, the interrelation among fault-blocks,the patial distribution feature of reservoirs, and to finally submit reliable evidence that serves the purpose of the increasement of oil reserve in this area. To this end, a series of processings on high S/N ratio, high resolution and high fidelity and processings to highlight the reservoir’s reflection features and their lateral variation were conducted to meet (he requirements of geologic interpretation. As a result, the closure errors of to. velocity and amplitude at each cross point of profiles are tolerable and commercial oil flow has been seen in the wells drilled under the guidance of the data interpretation.