塔河奥陶系薄层状孔洞储集体定量预测方法研究

发布时间：2018-05-19 11:51

本文选题：奥陶系 + 碳酸盐岩　；参考：《地球物理学进展》2017年04期

【摘要】：本文以塔河油田非"串珠"薄层状储集体作为研究对象,结合钻井、测井资料,指出薄层状储集体储集空间主要为溶蚀孔洞,主要位于T47不整合面下0~60 m.正演模拟结果证实T47不整合面低频强反射屏蔽了下部薄层状孔洞储集体弱信号,利用多子波地震道分解技术剥离了T47旁瓣强能量,重构数据恢复了薄层状溶蚀孔洞储集体弱信号.采用多子波分解和多属性线性回归融合技术建立了薄层状储集体厚度定量预测方法,降低了单一属性预测的多解性,提高了薄层状储集体厚度预测的准确性.塔河十区东地区应用结果表明,薄层状孔洞储集体预测厚度与实钻厚度的相对误差小于10%,说明该方法取得了较好的应用效果.
[Abstract]:In this paper, the non-series bead thin layer reservoir in Tahe Oilfield is taken as the research object. Combined with drilling and logging data, it is pointed out that the reservoir space of thin-layer reservoir is mainly solution pore, which is mainly located in 060 m below T47 unconformable surface. The forward simulation results show that the low frequency strong reflection of T47 unconformable surface shields the weak signals of the lower thin-layer pore reservoir, and the strong energy of the T47 sidelobe is stripped by the multi-wavelet seismic trace decomposition technique. The reconstructed data can restore the weak signal of thin-layer dissolution pore reservoir. The quantitative prediction method of thin-layer reservoir thickness is established by using multi-wavelet decomposition and multi-attribute linear regression fusion technique, which reduces the multi-solution of single attribute prediction and improves the accuracy of thin-layer reservoir thickness prediction. The application results show that the relative error between the thickness prediction of thin-layer pore reservoir and the thickness of real drilling is less than 10, which shows that the method has achieved good application effect.
【作者单位】：中国石化石油勘探开发研究院;中石化地球物理公司;
【基金】：国家重大科技专项“大型油气田及煤层气开发”(2016ZX05014001) 中国石化重大科技项目“塔河油田碳酸盐岩缝洞型油藏降低自然递减技术”(ZDP17001)共同资助
【分类号】：P618.13;P631.4

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