摘要
陕北延安组含油段主要是各种河流相沉积,由于其沉积相的不稳定,使得储层厚度和物性在横向上变化很大。例如,本项目工区在相距300m的两个井中,在同一层位,一口井具有工业油流,另一口井却无油,并且无油井还处于构造较高部位。为了提高井位设计的准确性,降低油田开发风险,对该区进行了井地联合地震勘探。主要是在井中采用六级三分量检波器,在同震源的条件下,井中和地面弯曲测线同时采集,获得零偏和非零偏VSP成像剖面,过VSP井的4km弯线叠加剖面,取得了很丰富的地震信息,对该资料进行了精细处理和解释,得到了比较好的地质效果,为油田的进一步开发提供了重要依据。
The North Shaanbei Yan′an group is made up of various river's sediments. The thickness and lithology of the reservoir varies largely in horizontal direction unstable sedimentation. Thus great difficulties are added to oil development. In order to improve the accuracy of oil well location and reduce, the risk of oil production, we made a seismic exploration by the combination of VSP and surface seismic. Multi-component and multilevel geophones are adopted with the same seismic source to gather VSP and surface seismic data. We have obtained more seismic information through data processing and interpretation, achieved a better result for oil field geology, which in turn provides important strategy basis.
出处
《地球科学与环境学报》
CAS
2004年第1期65-68,共4页
Journal of Earth Sciences and Environment
基金
国土资源部九五重点科技项目(9505110)
关键词
井地联合
多级检波器
岩性油藏开发
史例
the combination of VSP and surface seism
multi-component and multilevel geophones
lithology reservoir development
example
