基于eXpress平台地层破裂压力预测参数的改进  

Improvement of Fracturing Pressure Prediction Based on eXpress Desktop

作　　者：张辉[1] 

机构地区：[1]中国石油长城钻探工程有限公司测井公司,辽宁盘锦124011

出　　处：《测井技术》2008年第6期571-573,共3页Well Logging Technology

摘　　要：利用eXpress平台处理Xmac测井资料对地层破裂压力进行预测的过程中,发现计算岩石力学参数程序中比奥特压缩系数常出现奇异值或断点。在实际应用中,比奥特压缩系数对其他力学参数、泥浆参数的求取和破裂压力的预测起着很关键的作用。经过多次试验发现通过增加1组泥岩参数值的方法可以得到新的比奥特压缩系数,利用改进后连续的比奥特压缩系数曲线就可以在很大程度上解决这个问题。根据改进后的岩石力学参数进行地层破裂压力的预测,并与实际施工数据进行了结果对比,取得了较好的效果。It is necessary to predict formation fracture pressure and hydraulic fracture height, from which better fracturing effect of low porosity and permeability reservoirs can be achieved . During predicting the fracture pressure by Xmac processing on eXpress desktop, one of the important rock mechanics parameters, Biot＇s factor, often has anomalous values or breakpoints, which is the key for calculat other mechanics parameters, mud parameter and further predicting fracture pressure. Through analyses and experiments, it is found that adding one group of shale parameter may help us get new Blot＇ s compression coefficient, and using the improved continuous Blot＇s compression coefficient curves may solve the above problem. The formation fracture pressure is predicted with these improved rock mechanic parameters, and compared with real hydraulic fracturing result in some wells, we＇ve got a favorable effect.

关 键 词：测井资料 eXpress平台 比奥特压缩系数 预测 地层破裂压力 

分 类 号：P631.84[天文地球—地质矿产勘探] TE19[天文地球—地质学]