帕雷托截断分布模拟法──天然气田数和规模分布预测的新方法

天然气资源评价方法大约可分为两类,成因法与统计模拟法.这两类方法相互独立,各有特点,但对同一地质单元资源量的估算结果不一致,通常前者大于后者.把"成因法"与"统计模拟法"结合起来,以帕雷托截断分布为数学模型,用迭代算法可求得统一的结果及气田规模与数量分布的细节."成因法"与"统计模拟法"的结合过程中,还可求出一个对选区评价及经济分析有重要意义的新参数--资源集中程度.

SIMULATING METHOD OF PARETO TRUNCATED DISTRIBUTION:A New Approach to Predicting the Number,Size and Distribution of Gasfields

Gas resources assessment methods could be divided into two kinds: genetic method and statistical simutation method. The assessment results of these two methods obtained from the same geologic unit may differ differently, and usually the result of the genetic method is greater than that of the later. But combine these two methods together, use Pareto truncated distribution as numerical model, use iterative algorithm to obtain uniform results, the size,the number and the distribution of the gas fields and also gas resources enrichment which in a very important parameter for regional estimation analysis.