利用生产动态资料求解启动压力梯度  

The Calculation of Starting Pressure Gradient Based on Production Data

作　　者：艾芳[1] 张皎生[1] 李志伟[1] 何永宏[1] 袁林[1] 

机构地区：[1]长庆油田分公司勘探开发研究院

出　　处：《低渗透油气田》2005年第3期13-15,共3页

摘　　要：低渗透油藏的渗流不符合达西定律，其明显特点是存在启动压力梯度。为求得该参数，以考虑启动压力梯度的渗流规律和物质平衡原理为基础，推导出利用低渗透油藏注水见效时间和静态参数反演启动压力梯度的公式，并结合安塞低渗透油田的实际资料进行分析，表明反演计算结果与室内实验测量结果相符合，油藏启动压力梯度与渗透率呈现近似双曲函数关系，验证了本文方法的合理性与可靠性。Filtering flow of low Permeability t existence of staring pressure gradient. On the basis of filtering flow considering staring pressure gradient and material balance law ,th equation using water flooding response-time and static parameters to calculate staring pressure gradient has been generated and analyzed by actual data of An＇sai low permeability reservoir. The results indicates that the method is in accordance with the experimental results.Besides, staring pressure gradient and reservoir permeability assume the relationship of approximate hyperbolic function,thus testify reasonability and reliability of the method.

关 键 词：启动压力梯度 注水见效 生产动态 渗透率 

分 类 号：TE312[石油与天然气工程—油气田开发工程] TE321