修正Holbrook地层破裂压力预测模型  

Modification of Holbrook's Fracture Pressure Prediction Model

作　　者：葛洪魁[1] 林英松[1] 马善洲[1] 王爱国[2] 董星亮[2] 

机构地区：[1]石油大学(华东)石油工程学院,山东东营257062 [2]中国海洋石油渤海公司,天津塘沽300452

出　　处：《石油钻探技术》2001年第3期20-22,共3页Petroleum Drilling Techniques

摘　　要：分析了地层破裂压力变化规律 ,对 Holbrook提出的以孔隙度为基础的地层破裂压力预测模型进行了分析 ,指出 Holbrook给出的破裂压力与孔隙度的关系较好地解释了井漏容易在疏松砂岩地层中发生的现象 ,但对高孔隙度地层不适用。基于“临界孔隙度”概念和岩石力学特性通用预测模型 ,对 Holbrook地层破裂压力预测模型进行了修正 。Holbrook's model is one of the good models to predict the fracture pressure, especially when it relates the porosity with fracture pressure. It can demonstrate the fact that lost circulation commonly takes place in the weak sandstone formation. But it isn't suitable to the formations with higher porosity. Based on a concept of 'critical porosity', the Holbrook's model was modified. The application of this modified model yields a better result.

关 键 词：石油钻井 地层破裂压力 数学模型 压力预测模型 孔隙度 井漏 

分 类 号：TE21[石油与天然气工程—油气井工程]