摘要
为使应用原油地球化学法计算多层合采的单井产能配比更精确,选择了西部盆地的两个成熟度相差悬殊的油样按不同比例混合,并将混合油样进行族组分分离,对饱和烃进行了气相色谱分析。结果表明,混合样的指纹指标比值与混合比呈现出两种不同的变化规律:一种是样品指纹比值与混合比大致呈线性变化;另一种是样品指纹比值与混合比呈非线性变化。造成这一差别的原因主要是混合过程并不是完全的物理过程,而是物理化学过程。通过线性拟合,筛选除去那些线性关系不理想的指纹后再计算,可以大大减小误差。同时发现,计算时用拟合推测的单层指纹比值代替单层原始值,也可以减小误差。这些研究可以为产能监测指纹峰的选择和计算方法的优化提供参考。
Two oil samples with different maturities from a basin in western China are selected, mixed and separated by group composition in order to properly estimate the allocation of single well productivity with geochemical method. The saturated hydrocarbons are analyzed by gas chromatography. The result shows that both linear and nonlinear changes occur in fingerprint indicator ratio and mixed ratio of the mixed sample. The reason is that the process of mixture is not pure physical one, but a physicochemical one. Through linear match, the error can be greatly reduced by recalculation of it after removing those imperfect fingerprints in linear correlation. Also, the error could be decreased by using presumed the single layer fingerprint ratio rather than the initial single layer value. The study could be as a guide for selection of peak fingerprint and optimization of related calculation method for productivity monitoring.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第2期234-235,共2页
Xinjiang Petroleum Geology
关键词
合采
分层
产量计算
地球化学
实验
commingling production
production calculation
geochemistry
experiment
test
