圣灯山二叠系裂缝气藏解剖

Dissection of the Fractured Gas Reservoir in Triassic of Shengdengshan Gas Field

本文根据大量地质、钻采和物探资料,对四川圣灯山气田下三叠统嘉陵江组气藏进行了解剖。认为由于断层分割,裂缝发育不均,而具有多种类型裂缝性气藏。发现地腹裂缝发育与地震剖面上的可疑反射和无反射段密切相关,前者是裂缝发育带的反映,后者常伴有断层。这一发现为老气田裂缝发育带的预测和二次勘探、开发提供了依据。

This paper dissects the gas reservoir in Jialingjiang Group, Lower Triassic, of Shengfdengshan Gas Field in Sichuan Basin, according to a number of data about geology, drlling and production as well as geophysics. It is thought that many types of fractured gas reservoirs occur there because of the division of faults and the nonhomogeneous development of fractures and found that in underground the devel- opment of fractures is closely related with the intervals with questionable reflection and no reflection on the seismic sections. The former shows the development zone of fractures and the latter always as- sociates with faults. Such discover presents some bases for forecasting the development zone of frac- tures in an old gas field, and for the second exploration and exploitation.