石油与天然气地质 ›› 1994, Vol. 15 ›› Issue (1): 12-22.doi: 10.11743/ogg19940102

• 论文 • 上一篇    下一篇

川南地区地震反射波强弱与二、三叠系气藏气水分布关系

陈宗清   

  1. 四川石油地质勘探开发研究院, 成都610051
  • 收稿日期:1993-01-28 修回日期:1993-05-15 出版日期:1994-03-25 发布日期:2012-01-16

RELATIONSHIP BETWEEN SEISMIC REFLECTION STRENGTH AND GAS-WATER DISTRIBUTION OF PERMIAN AND TRIASSIC GAS POOLS IN SOUTH SICHUAN

Chen Zongqing   

  1. Sichuan Institute of Petroleum Exploration and Development, Chengdu
  • Received:1993-01-28 Revised:1993-05-15 Online:1994-03-25 Published:2012-01-16

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摘要：

川南地区下三叠统嘉陵江组顶界和二叠系阳新统顶界两个碳酸盐岩反射层的气水分布与地震反射波强弱有关:地震弱反射和异常反射井数与强反射井数之比值,成功率和孔缝发育率嘉陵江组分别为2.2及2.1,阳新统皆为1.6;其高、中产的弱反射和异常反射井数与强反射井数之比值,嘉陵江组为1.6,阳新统为2.3.这是地腹岩层孔缝发育程度在地震反射记录上的反映,故根据地震反射波可寻找孔缝发育带.

关键词: 四川盆地, 地震反射, 二叠系, 碳酸盐岩, 气藏, 侵蚀面

Abstract:

Studied the data of 327 wells in the Jialingjiang Formation and of 242 wells in the Yangxin Series, the specific value of well numbers of weak seismic reflection, abnormal reflections (with non-reflection) to that of strong reflection, and the specific value of success ratio to pore-fracture growth rate in the Jialingjiang Formation are 2.2 and 2.1 respectively, and these values of Yangxin Series are all 1. 6; as for the productivities of gas wells, the specific value of well numbers of weak seismic reflection plus abnormal reflections to that of strong reflection of high and medium sized productivities of the Jia lingjiang Formation is 1. 6, and that of Yangxin Series is 2. 3. This result is the reflection of pore and fracture development in subsurface rocks on seismic reflection records. The weak and abnormal reflection zones exist extensively not only in positive structures, but also in negative ones in Permian and Triassic, and even in old gas fields. So the exploration realm is still considerably vast.