升平气田火山岩储层裂缝特征研究

对火山岩裂缝特征进行研究是松辽盆地升平气田营城组火山岩低孔低渗裂缝性气藏开发地质研究的重要内容。借助野外地质考察、岩心观察、地震属性分析以及古地磁研究等多种方法，结合升平气田的断裂发育特征，从多方面综合描述了升平气田火山岩气藏裂缝发育情况，并研究了裂缝的有效性。结论认为：①岩心观摩技术及测井裂缝研究技术能够对裂缝进行定量研究；②研究区天然气裂缝发育，但多数被充填或半充填；③Ⅰ、Ⅱ类储层以气孔为主，裂缝不发育，Ⅲ类储层气孔不发育，裂缝较发育。

A study on the features of fractures in the volcanic reservoirs of Shengping gas field

To study on the features of fractures of volcanic reservoirs is an important issue for geological research on the development of the volcanic gas reservoirs with low porosity and low permeability in the Yingcheng Formation of the Shengping gas field, Songliao Basin. The fractures in the volcanic reservoirs of Shengping gas field were described by integrating field outcrop observation, core observation, seismic attribute analysis and palaeomagnetic research with the features of fault development in this gas field. The effectiveness of fractures was also analyzed. Results show that ①a quantitative study on the fractures can be fulfilled by core data and log analysis; ②fractures are developed in the study area but most of them are filled or half filled; ③the reservoirs of type Ⅰand type Ⅱ are dominated by pores instead of fractures, on the contrary, type Ⅲ with less apertures is mainly full of fractures.