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1. 发明授权

US06128579A Automated material balance system for hydrocarbon reservoirs using a genetic procedure 有权
标题翻译：使用遗传程序的油气藏自动物料平衡系统
公开(公告)号：US06128579A
公开(公告)日：2000-10-03
申请号：US140121
申请日：1998-08-25
申请人： Michael D. McCormack , Donald J. MacAllister , Richard F. Stoisits , Perry W. Scherer , Tuan D. Ma
发明人： Michael D. McCormack , Donald J. MacAllister , Richard F. Stoisits , Perry W. Scherer , Tuan D. Ma
IPC分类号： E21B49/00 , G05B13/02 , G01V3/38
CPC分类号： G05B13/0265 , E21B49/00
摘要： A system for producing a material balance solution for well patterns in a hydrocarbon reservoir is described that automatically optimizes the fluid allocation factors for each well used in determining the solution. The system automatically optimizes estimates for the allocation factors to be used in the material balance solution by randomly generating a first generation of allocation factor strings, each string in the generation assigning allocation factors to each of the wells in the reservoir. A fitness function value is determined for each of the strings by evaluating a fitness function, wherein the fitness function comprises the sum of the differences between computed and measured field pressures for each pattern, and the sum of the differences between target allocation factors and the allocation factors specified within the string for each well. A succeeding generation of allocation factor strings is produced according to a genetic algorithm. The process of determining a fitness function value for each of the strings is then repeated for the succeeding generation. The string having a fitness function value meeting a specified criteria is identified, wherein the identified string represents the optimized estimates of the allocation factors for the reservoir for use in determining the material balance solution.
摘要翻译：描述了一种用于生产用于油气藏中的井模式的物料平衡溶液的系统，其自动优化用于确定溶液的每个井的流体分配因子。系统通过随机生成第一代分配因子串，将生成中的每一个字符串分配给储层中的每个孔，自动优化用于物料平衡解决方案中要使用的分配因子的估计。通过评估适应度函数来确定每个字符串的适应度函数值，其中适应度函数包括每个模式的计算和测量的现场压力之间的差的总和以及目标分配因子与分配之间的差异之和在每个井的字符串内指定的因子。根据遗传算法产生后代的分配因子串。然后为后续的一代重复确定每个字符串的适应度函数值的过程。识别具有满足指定标准的适应度函数值的字符串，其中所标识的字符串表示用于确定材料平衡解决方案的储存器的分配因子的优化估计。

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