烃检技术在秦皇岛A构造勘探中的应用

地震反射波频带中包含着十分丰富的信息,这些信息能够对提高油气储层的识别,提供十分有利的帮助,利用叠后数据体的吸收减弱的属性分析油体分布是当前储层油气检测的常用手段。秦皇岛A构造处于石臼坨凸起东北斜坡带,石臼坨凸起区浅层发育了一系列的北东以及近东西向的晚期断层,在浅层形成了多个圈闭面积小,幅度低的断块型圈闭,油气成藏具有一定的风险。为了更好的揭示秦皇岛A构造浅层的含油气性,我们提出了对该构造进行基于匹配追踪算法的高频衰减梯度异常的方法进行烃类检测。实际应用证实该方法对浅层的储层都有较好的指示,其预测结果能够相互验证,提高了储层预测及流体检测的准确性,并为秦皇岛A构造的下一步井位部署等工作规避了风险,提高勘探效率。

Seismic reflection wave frequency band contains very rich information,which can improve the identification of oil and gas reservoirs and provide very beneficial help.It is a common method to analyze the distribution of oil body by using the properties of reduced absorption of post-stack data body.Qinhuangdao A structure is located in the Northeast slope zone of Shijiutuo,and a series of north-east and near-east-west late faults have developed in the shallow layer of the Shiqi uplift area.In the shallow layer,a number of small and low closure areas have been formed.Block type traps,oil and gas reservoirs have certain risks.In order to better reveal the hydrocarbon content of the shallow layer of the Qinhuangdao A structure,a high frequency attenuation gradient anomaly method based on matching tracking algorithm is proposed to detect oil and gas in the area.The application of the actual data proves that the method has a good indication for shallow reservoirs,its prediction results can be verified with each other,the accuracy of reservoir prediction and fluid detection is improved,and the next well location deployment for Qinhuangdao A structure is avoided.Risk,Improving the efficiency of exploration.