层序地层分析在鄂北塔巴庙地区测井解释中的应用

Application of Strata Sequence Analysis to Log Interpretation in North Erdos Basin

鄂尔多斯盆地塔巴庙地区上古生界气藏为岩性气藏,砂体纵、横向分布广,含气层数多,储层物性差,传统的测井解释很难对天然气的储层参数和产量做出合理的判断。以测井解释结论为例,以层序地层分析和沉积过程为理论基础,经分析得出,不同的体系域和沉积过程是影响和控制砂岩储层物性和天然气含量差异的主要原因,层序地层分析在该区的应用很好地对测井解释做了补充。同时,在分析天然气不同含量的控制因素时,考虑了泥岩盖层对产量的影响。

The Neopaleozoic reservoirs in the Tabamiao region of Erdos Basin are lithological reservoirs with sand body spreading longitudinally and transversally. There are many gas formations with bad physical properties of reservoirs. It is pretty difficult to predict the reservoir parameters and production using traditional logging interpretation. Thus, taken the logging interpretation as an example and based on the theory of strata sequence analysis and sedimentary process, the following conclusion will be reached in this article. That is, the main reason that controlls the sandstone reservoir properties and the natural gas content differences is the different system tracts and sedimentary processes. The application of sequence strata analyzes is a good supplement of logging interpretation. At the same time, with analyzing the controlling factors of natural gas content, the influence of the mudstone seal on the production is also considered.