火成岩油气藏分类初探

本文在对渤海湾盆地新生代火成岩分布、已发现火成岩油气藏特征研究的基础上,根据构造演化、火成岩分布、岩浆活动的特点,将盆地新生代岩浆活动史划分为两大旋回,并将火成岩油气藏分为抬升淋滤型、埋藏溶蚀型、构造裂缝型、火山碎屑岩型、火成岩体侧向遮挡型、接触变质型和超覆披覆型等7类。在此基础上,结合实例详细探讨了各类油气藏在地层剖面中所处的位置以及其岩性特点、储层物性特征等。 

A PRELIMINARY APPROACH TO THE CLASSIFICATION OF OIL AND GAS RESERVOIRS IN IGNEOUS ROCKS

Based on the study of characteristics for the Cenozoic igneous rock distribution and discovered oil and gas reservoirs in igneous rocks in the Bohaiwan Basin and according to the analysis of features for tectonic evolution, igneous rock distribution and magmatic activity in this paper, the history of the Cenozoic magmatic activity in the basin is divided into two cycles, and the oil and gas reservoirs in igneous rocks are classified as uplifting leaching, burying dissolution, tectonic fracture, pyroclastic rock, igneous rock body lateral screening, contact metamorphic and overlapping draping seven types. On this basis, the location in stratigraphic sections, lithological features and physical property characteristics of each type oil and gas reservoirs are discussed in detail combined with examples.