高邮凹陷北斜坡火成岩对储层的影响

Influence of igneous rock on reservoirs in northern slope of Gaoyou Depression

薛成刚 李春荣

中国石化江苏油田分公司地质科学研究院，江苏 扬州 225009

Geological Scientific Research Institute of Jiangsu Oilfield Company, SINOPEC, Yangzhou 225009, China

高邮凹陷北斜坡地区广泛存在高速火成岩侵入，火成岩与地层夹角不大，大体上呈北东—南西向展布。由于火成岩整体由南向北沿着斜坡带由深而浅侵入，空间上整体呈穿层侵入，局部表现为顺层侵入，对储层影响很大。火成岩对储层影响的研究结果表明，火成岩侵入致使储层加速成岩、温压变化、产生低温变质矿物、热烘烤变质，在研究区内，弊大于利。

High-speed intrusion of igneous rock is widespread in the northern slope of Gaoyou Depression. The included angle of igneous rock with formation is little, presenting northeast-southwest trend substantially. Because of the igneous rock from deep part to shallow part along the slope zone from south towards north, igneous rock indicates the transverse intrusion sterically and concordant intrusion regionally, which generates a great influence on reservoir. Through the study of the effect of igneous rock on reservoir, it is believed that the igneous rock intrusion make the reservoir diagenesis accelerate, make the temperature and pressure change and create the low temperature metamorphic mineral and optalic metamorphism. Harms are greater than interest in the study from the effect of igneous rock on reservoir.

10.6056/dkyqt201301010