岩性油气藏 ›› 2016, Vol. 28 ›› Issue (3): 127132.doi: 10.3969/j.issn.1673-8926.2016.03.017
张京思,揣媛媛,边立恩
Zhang Jingsi, Chuai Yuanyuan, Bian Li’en
摘要:
受地震资料品质限制及 X 井区辫状河沉积特征的影响,利用常规地震属性分析及 90° 相位转换技术在对该井区新近系馆陶组上部砂体连通性进行识别时存在较大困难,而应用正演模拟技术可识别出砂体的连通性。 具体做法为: ① 以钻井资料和地震资料为基础,依据 X 井区馆陶组上段砂体沉积特征,建立不同的地质模型并进行正演模拟计算; ② 分析模型的地震响应特征,从理论上探讨砂体横向连通性对地震反射特征的影响,并与实际地震波形进行对比分析,确定 X 井区馆陶组上段主力砂体的连通性及砂体边界; ③ 通过钻井结果来验证正演模拟的可靠性。 结果表明,模型正演方法可以实现对地震地质模型的高精度模拟;正演模拟技术作为一种辅助手段,可以有效解决研究区砂体连通性的多解性问题,对勘探阶段砂体连通性研究具有一定的推广和应用价值。
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