优化反分析方法在地应力与裂缝研究中的应用  

Application of Optimization Back-Analysis Method in Reservoir Stress and Fracture Study

作　　者：刘钦节[1] 闫相祯[2] 杨秀娟[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061 [2]中国石油大学(华东)储运与建筑工程学院,山东东营257061

出　　处：《石油钻探技术》2009年第2期26-31,共6页Petroleum Drilling Techniques

基　　金：中国石油化工集团公司提高采收率先导项目"梁家楼油田梁112块特低渗透油藏裂缝检测技术研究与应用"(编号:2006023)部分研究成果

摘　　要：应用优化反分析方法建立了基于常规测井资料的地应力及裂缝分析模型,该模型可以利用声波、密度和自然伽马等资料求取井筒附近的岩石力学参数、地应力及裂缝参数的连续剖面,为钻井过程中保持井眼稳定、压裂设计等提供参考。以胜利油田纯化油区几十口井的实际资料为例进行计算分析,获取了相应的地应力及裂缝分布规律,并首次回归拟合了该油区三向地应力随深度变化的关系曲线。大量试验结果和现场应用情况表明,该方法准确可靠,成本较低,适应性强。A model is developed to analyze formation stress and fracture development using based on optimization back analysis method using conventional logging data. This model can used to obtain successive profile map of the near wellbore rock mechanics parameters, formation stress, and fracture parameters using acoustic logging, density logging, and gamma, etc, through which provide references to wellbore stability and fracturing design. Actual drilling data obtained form wells in Chunhua block, Shengli Oilfield have been studied. The profile of stresses and fracture were acquired. The relationship between the reservoir stresses and depth was back calculated for the first time. A lot of experimental data and the field applications indicate that this method is simple and reliable.

关 键 词：优化反分析 岩石应力 测井数据 裂缝 

分 类 号：P631.81[天文地球—地质矿产勘探]