川东地区石炭系储层横向预测的影响因素

Influence factor of lateral prediction of Carboniferous reservoirs in eastern Sichuan area

1. 四川石油地调处成都计算中心, 成都610212;2. 西南石油学院, 南充637001

Chengdu Computer Center, Sichuan Petroleum Geological Surev Division, Chengdu 610212

1993年, 在“川东地区石炭系碳酸盐岩薄储层的横向预测”[1]一文中, 以川东地区大天池构造带石炭系储层横向预测为例, 论述了石炭系储层横向预测的方法。经近几年的推广运用, 取得了较好的效果, 但在一些地质条件比较复杂的地区, 石炭系地层的厚度预测和储层预测均有失误现象。利用精细的地震资料处理和井间综合对比分析及多解性逐个排除法, 是为减少这种失误现象所作的一种尝试。通过本次工作我们认为：对川东地区石炭系储层横向预测方法进行改进, 其前景和经济效益是十分可观的。

In the paper "Lateral prediction of thin Carboniferous carbonate reservoirs in eastern Sichuan area published in 1993, the laterel prediction methed for Carboniferous reservoirs is discussed taking the reservor lateral prediction the Datianchi structural belt in eastern Sichuan area for example. A good result has been made through the application of the method for several years.But in the area with complex geological condition, failures arise in the thickness prediction and reservoir predication of Carbonifer ous formations. We try to reduce the failures by using fine seismic clata processing, integrated crosswell comparative analysis,and ambiguity exclusive method .Based on these works, we think that the improvement of Carboniferous reservoir lateral prediction in eastern Sichuan area will have a good prospect and considerable economic benefits.