摘要
靖边气田上古生界盒8段储层受复杂气水关系和储层非均质性的综合影响,利用单一指标进行气水层划分和产能评价时效果较差,为此提出了多级多元判别方法。首先将砂岩层划分为气层、气水层、水层和干层;其次,在气层中判别出工业气层和非工业气层;最后,在工业气层中判别出高产工业气层和基本工业气层。三级多元判别每一级的回判率都高于一级多元判别的回判率,其判别结果更加可靠。三级多元判别法在靖边气田取得了较好的判别效果,其判别结果与动态分析结果比较一致。
The Neopaleozoic reservoir in He 8 member in Jingbian Gasfield is a sandstone reservoir with low-porosity and low-permeability. Because of the complex gas-water relation and the reservoir heterogeneity,the discriminant result of using single index is short of effect. So,multi-grade identification was put forward to identify the producing pay and evaluate the productivity. The gas bearing formation,gas and water horizon,water and dry formation were recognized. The commercial and non-commercial formations were distinguished from the gas formation. And the high productivity and basic commercial formation in the commercial gas formations were distinguished. The discriminant result has been proved reliable,and this method has important reference significance for the reservoir evaluation in the Neopaleozoic reservoir or the development of the similar low permeability gas reservoir.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2009年第5期19-22,112,共4页
Petroleum Geology and Recovery Efficiency
关键词
测井解释
多级多元判别
储层评价
盒8段
靖边气田
He8 member
logging interpretation
multi-grade identification
reservoir evaluation
Jingbian Gasfield
