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针对目前储层非均质性诸多表征参数存在的计算数值无界、分类方案主观性强及表征方法定量化程度低等问题,以洛伦兹曲线法为理论基础,通过对洛伦兹曲线法求得的数据进行数学变换处理,定义了一种新的非均质综合表征参数。该方法运算简单,参数具有对比性强、能定量化表征非均质程度、适用于任何类型油藏等优点。应用该方法对旅大油田的储层非均质性研究结果表明,旅大油田储层为中等非均质性,但层间及平面非均质程度较强。针对其储层非均质特征,制定了适合的开发调整思路:东二段上亚段实施联合开发,以定向井开发为主,少量水平(分支)井挖潜为辅;东二段下亚段实施分层系开发,分级分层配注调整措施。研究结果应用于旅大油田综合调整和提高采收率等方面效果显著,在综合含水率降低9%的同时,产油量增加约1000m3/d。
Aiming at the problems of unbounded computational parameters, subjectivity of classification schemes and low quantification of characterization methods for many characterization parameters of reservoir heterogeneity at present, based on Lorentz curve method, The data was processed by mathematical transformation, and a new heterogeneous comprehensive characterization parameter was defined. The method has the advantages of simple operation, strong parameter comparison, quantitative characterization of heterogeneity, and application to any type of reservoir. The results of reservoir heterogeneity study of Luda Oilfield by this method show that the reservoirs in Luda Oilfield are medium heterogeneity, but the degree of interlayer and plane heterogeneity is relatively high. In view of its reservoir heterogeneity, a suitable development and adjustment mentality has been formulated: the joint development of the Upper Member of East Second Member, the development of directional well, and the tapping potential of a small number of horizontal (branch) wells; the lower member of East Second Member The implementation of stratified development, hierarchical stratification with note adjustment measures. The results have been applied to the comprehensive adjustment and oil recovery of Luda Oilfield. The results show that the comprehensive oil production decreased by 9% while the oil production increased by about 1000m3 / d.