电、磁综合勘探方法在黄土塬地区油气勘探中的应用

我国西北地区分布着面积广阔的黄土塬,同时地下蕴藏着丰富的油气等矿产资源。但由于其表面切割剧烈、沟壑纵横,加之地质构造复杂,地质、地震资料少,在找油初期选择一种可靠、低成本的勘探方法,为后续详查提供勘探靶区和设计依据显得尤为重要。根据油气藏的烟囱效应,通过电、磁方法来研究区域内电、磁异常,可以判断该区油气藏的展布。

The Application of Electrical and Magnetic Survey to Oil and Gas Exploration in Loess Tableland

In northwest of China,there is a vast area of loess tableland,where reserves a great deal of mineral resources such as oil and gas etc.But because of the intense surface cutting,gully aspect,coupled with complex geological structure,insufficient geological and seismic data,it is particularly important in the early exploration stage to find some reliable,low-cost exploration methods to provide the exploration target areas and design basis for the follow-up survey.According to the stack effect of oil and gas reservoir,the electrical,magnetic anomaly can be analyzed through the electric,magnetic methods to determine the distribution of oil and gas reservoir.This paper focuses on the application of the spontaneous potential,large polar distance electrical sounding,time domain induced polarization method and magnetic method to oil and gas exploration in loess tableland area.Through the practical application of several exploration methods,mutual complement and verification,several oil and gas anomaly zones are ultimately divided.Combined with geological information,and the drilling,it proves that the four methods have a very good application effect in this region,and the economicbenefit can be expected.