摘要
基于双孔隙物理模型 ,建立了裂缝性油藏干扰试井的数学模型。利用拉氏变换方法求出该模型在拉氏空间的解。运用Stehfest方法进行了数值反演 ,得到油藏中压力分布的近似解。根据遗传算法自适应全局优化概率搜索的特点 ,利用自动拟合技术识别出裂缝性油藏的主渗透率及主裂缝方向。对油田几口井的观测压力进行了计算 ,解决了激动井无压力数据的问题 ,并用实测干扰试井资料对文中方法进行了验证。结果表明 ,该文提出的方法准确可靠 。
On the basis of dual porosity physical model, a mathematical model for interference test in fractured reservoir is developed. The Laplace space solution of this model can be derived by Laplace transforms. A numerical inversion method presented by Stehfest is used to work out the approximate solution of pressure distribution in reservoir. On account of the trait of searching principles of adaptive global optimization probability of inheritance algorithm, the automatic fitting technique is utilized to identify the principal permeability and the direction of fractures in fractured reservoirs. This paper presents the calculation results of the pressures observed from several wells in Shengli oilfield. This method can be used in the active wells without pressure data. The validity of this method is verified by the observed data with the interference test method. The interpretated results indicate that this interpretation mehtod presented in this paper is creditable, and the interpretated result is agreeable with the state of oilfield.
出处
《石油大学学报（自然科学版）》
CSCD
北大核心
2002年第2期44-46,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
中国石油化工集团公司导向课题资助 (KZD2 19970 0 9)
关键词
裂缝性油藏
主渗透率
主裂缝方向
识别方法
fractured reservoir
interference test
principal permeability
fracturing direction
identification
inheritance algorithm
