摘要
勘探早期，由于钻井数少、井距大，地质资料的限制，用常规方法建立的储集层砂体骨架模型很难合理地认识地下砂体的分布特征。为此本文提出地面与地下相结合，在储集层建库的基础上，用改进的布尔方法建立起具有多种岩石相的骨架模型，从而达到精细表征储集层砂体分布特征的目的。在实例中的克拉研究区只有4口井，井距最大几十公里，应用上述方法，先作野外调查，对不同岩石相赋于不同的宽厚比；再确定总的砂体和剖面面积的比值以及不同岩石相在剖面中的比值；经统计本段不同岩石相的厚度分布和纵横向上的分布概率，最后采用改进的布尔方法随机模拟建立多种岩石相砂体骨架模型做储集层描述和预测。其结果较好地反映了该区白垩系巴什基奇克组储集层砂体的分布规模、连续性和接触方式，同时证实了该方法建模参数选择的合理性和可信度。图2参11（李建国摘）
Cretaceous stratum is the main gas producing sone in Kela area. It is important to know clearly the distribution of sand body of Cretaceous stratum in Kela area for exploitation in the future. However, it is difficult to build a sound sand body framework model by using general methods because there are very few wells and well distance is large in Kela area. In order to build up a rational sand body framework model besed on information in existence, the authors adopt a method combining ground and underground data. On the basis of close investigation of two main field sections, the authors built sand body framework model by using Boolean method of stochastic simulation technology. Conventional Boolean method can be used to build framework model of only one kind of lithofacies. In order to characterize distribution of subtle sand body, the authors improved this method, then it can be used to build framework medol of multi-lithofacies. In addition,its application example is given in the paper.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2000年第3期91-92,95,共3页
Petroleum Exploration and Development
关键词
布尔代数方法
砂体骨架模型
储集层
地质模型
Reservoir model, Stochastic simulation, Lithofacies, Framework model
