塔河南探区三叠系中油组储层预测

Prediction of middle Triassic reservoir in south Tahe exploration area

(1.成都理工大学，四川成都610059;2.中国石油化工股份有限公司勘探开发研究院南京石油物探研究所，江苏南京210014）

Chengdu Institute of Technology, Chengdu 610059, China

塔河南探区三叠系中油组储层孔隙度高，渗透性好，但非均质性强，横向变化剧烈。针对这些特点，提出了三叠系中油组储层预测方法——频谱成像技术、测井约束地震反演技术和地震衰减梯度属性技术。利用上述方法技术对塔河南探区中油组储层进行了预测、分析和评价，刻画了砂体的分布特征，描述了有效砂体的含油气性，预测结果与钻井结果相吻合。

The middle Triassic reservoir in south Tahe area is characterized by high porosity and good permeability, but with strong anisotropy and considerable lateral changes. Aiming at the characteristics, we proposed the reservoir prediction methods for this area, including spectrum decomposition, well constrained seismic impedance inversion, and seismic attenuation gradient attribute technology. The abovementioned methods have been applied to predict, analyze, and evaluate the middle Triassic reservoirs in south Tahe exploration area, successfully predicted the distribution of the sand and the oil-gas bearing capability, which coincide with the drilling results.