火成岩油气储层中构造裂缝的微构造曲率预测法

在理想化微构造模型基础上用微构造计算地层顶面曲率,利用储层微构造的曲率来研究火成岩储层中构造裂缝的分布与预测.以渤海湾盆地惠民凹陷中的商河油田商741井区沙三中亚段浅层侵入火成岩裂缝储层为例,利用储层裂缝微构造曲率预测法对储层裂缝进行研究,提出了在浅层侵入火成岩中利用曲率变化值来预测裂缝发育程度的曲率预测法的改良方法.结果表明:该方法在商741井区的应用较为理想,利用缝面比参数法对商741井区沙三中浅层侵入火成岩曲率变化值与裂缝发育的相关性进行了分析,相关系数R~2在0.79以上.

Forecasting Method of Tectoclase in the Igneous Reservoirs Using a Curvature of the Microtectonics

Based on the idealized microtectonic model, the curvature of the upper surface of the formation was calculated, which was applied to research the distribution and forecast of frac-tures in the igneous reservoirs. Taking the intrusive igneous rock in shallow layer in the middle of the third member of Shahejie formation in Shang 741 area of the Shanghe oilfield, Huimin sag, Bohai Bay basin for an example, an improved method was proposed, which used the varia-bility value of curvature to replace the absolute value of curvature of the intrusive igneous rock. The results show that the application of this method in the Shang 741 well area is well. The correlatability of the variability value of curvature and distribution of fracture was analyzed by the fracture-areal parameter, and the correlation factor is above 0.79.