碳酸盐岩泥岩互层中水平井双侧向电阻率测井响应特性  

Response Characteristics of Horizontal Dual Laterolog in the Interbeddings of Carbonate and Mudstone

作　　者：冯庆付[1] 万文春 刘迪仁[3] 

机构地区：[1]中国科学院声学研究所,北京100080 [2]中石油长庆油田分公司第五采油厂,陕西榆林718600 [3]油气资源与勘探技术教育部重点实验室(长江大学),湖北武汉430100

出　　处：《石油天然气学报》2013年第8期89-92,0+3,共4页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(40774073)

摘　　要：建立了碳酸盐岩和泥岩互层的五层介质的水平井模型,采用三维有限元法研究了水平井中目的层厚度及电阻率、泥岩厚度及电阻率等对双侧向电阻率测井响应的影响规律。数值模拟结果表明,当目的层厚度不是很大时,泥岩对双侧向电阻率测井响应的影响比较大,并且对深侧向电阻率的影响更加明显;目的层真电阻率与泥岩电阻率相差越大,泥岩对双侧向电阻率测井的影响就越大,尤其对薄层的影响更加显著;另外,在水平井中,深、浅侧向电阻率随泥岩层厚的变化而变化很小。For establishing a horizontal well modeling with 5 layers of interbeddings of carbonate and mudstone,the influence of thickness of target zone,resistivity,the thickness of mudstone and resistivity in horizontal well on the response of dual laterolog were analyzed by 3-D finite element method.The numerical simulation shows that the mudstone has obvious influence on dual laterolog response,especially it has even more influence on the deep laterolog when the thickness of target zone is not bigger.The larger the difference between true resistivity of formation and mudstone resistivity is,the more serious the impact on dual laterolog response is,especially for the thin bed.The deep and shallow lateral apparent resistivity change is very little with the thickness change of mudstone.

关 键 词：双侧向电阻率测井 水平井 碳酸盐岩 五层介质 数值模拟 

分 类 号：P631.811[天文地球—地质矿产勘探]