辽河东部凹陷火成岩储层识别技术研究

辽河东部凹陷火成岩油气藏具有地下地质条件复杂、岩性和岩相变化快、储层物性变化大及地震反 射特征复杂等特点。 对辽河东部凹陷火成岩储层构造特征系统研究后认为，火成岩主要受控于中部驾掌 寺-界西走滑断裂系，并沿大断裂形成南北对称分布，主要发育多旋回喷出型火成岩和层状侵入型火成 岩。 针对这些特点，充分应用火成岩地震反射特征识别、波阻抗反演以及时间切片等技术发现和落实了 红星喷出型和于楼侵入型等多个火成岩体，并采用火成岩旋回划分、波形聚类属性以及优势储层地震反 演等技术对火成岩体相带和有利储层分布进行了划分和预测，形成了一套火成岩识别评价技术系列。 该 技术系列指导了辽河东部凹陷及外围陆家堡凹陷火成岩的勘探，并可为其他油区火成岩油气藏勘探提供 借鉴。

Igneous reservoir identification technique in eastern sag of Liaohe

The igneous reservoir in eastern sag of Liaohe is characterized by complex geological environment and seismic reflection character, variable lithology and reservoir properties. The systematic research on structure features of igneous reservoir shows that igneous rocks are mainly controlled by Jiazhangshi-Jiexi slip faults system, symmetrically distributed from south to north along the major fault, and mainly developed muhicycle extrusive igneous rock and layered intrusive igneous rock. We used techniques of igneous rock seismic reflection identification, impedance inversion and time slice to identify Hongxing extrusive igneous body and Yulou intrusive igneous body, applied techniques of cycle classification, waveform clustering attributes and favorable reservoir inversion of igneous rocks to predict facies belt and favorable reservoir distribution of igneous bodies, and finally formed a set of identification and evaluation technique series of igneous rock. This set of technique series guided the exploration of igneous bodies in eastern sag of Liaohe and Lujiabao Sag, and it also provides technical support for igneous reservoir exploration in other area.