缝洞型碳酸盐岩地层孔隙压力测井预测方法研究  

Research on Fractured-vuggy Carbonate Formation Pore Pressure Prediction Method Based on Logging Data

作　　者：王亚娟[1] 彭梦芸 李世银[3] 琚岩[3] 庄大琳 

机构地区：[1]西南石油大学地球科学与技术学院,成都610500 [2]西南石油大学石油与天然气工程学院,成都610500 [3]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000

出　　处：《重庆科技学院学报（自然科学版）》2015年第2期29-33,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金石油化工联合基金重点支持项目"页岩气低成本高效钻完井技术基础研究"(U1262209);四川省应用基础研究计划项目"形成大规模压裂缝网的水平井井眼轨迹优化研究"(2014JY0092)

摘　　要：针对缝洞型碳酸盐岩非均质性强、异常压力成因机制复杂的特点,分别建立等效深度法、Eaton法及有效应力法的地层孔隙压力测井预测模型,对比分析各方法的适用性。分析表明,改进的有效应力法综合考虑了孔隙度、泥质含量和密度等因素,可避免单因素导致的精度低和误差大的问题,且无需建立正常压实趋势线,能够满足缝洞型碳酸盐岩地层孔隙压力的预测需求。Vuggy carbonate rock has strong heterogeneity and complex genetic mechanism of abnormal pressure. For these characteristics,this thesis established equivalent depth model,Eaton model and effective stress model to predict pore pressure based on logging data. The research indicated that the improved effective stress method,takes the effect of the porosity,clay content and density into overall consideration,which considers more factors in the conformation of abnormal pore pressure and avoided establish normal compaction trend line,so it is fit for the prediction of pore pressure in this area.

关 键 词：碳酸盐岩 孔隙压力 等效深度法 Eaton法 有效应力法 

分 类 号：P631[天文地球—地质矿产勘探]