含黄铁矿低电阻率储层测井评价技术  

Logging Evaluation Technique for Low Resistivity Reservoir Containing Pyrite

作　　者：左银卿[1] 刘炜 袁路波[3] 赫志兵 

机构地区：[1]华北油田勘探开发研究院,河北任丘062552 [2]中油测井技术服务有限责任公司,北京100082 [3]华北石油管理局井下作业公司,河北任丘062552

出　　处：《测井技术》2007年第1期25-29,共5页Well Logging Technology

摘　　要：分析了低电阻率储层中黄铁矿含量对深/中感应、侧向、补偿中子、密度、声波时差、核磁共振等测井曲线的影响。应用了组份分析技术求取矿物含量,以常规测井和元素俘获谱(ECS)测井求得的地层矿物(包括黄铁矿)含量及其他参数为初值,使用GeoFrame软件包中的ElanPlus程序生成地层的双感应或双侧向电阻率模拟曲线;反复调整参数,直到模拟曲线和实测曲线在不含黄铁矿的层段基本一致;遂以此时的参数为解释结果。岩电实验结果表明:黄铁矿含量增加会导致饱和度指数n值降低,但孔隙胶结指数m值基本不变。据此修改了饱和度的解释模型参数和解释方法。这些方法已用于生产,提高了测井解释符合率。The effects of pyrite content in low resistivity reservoir to logging curves of deep/medium induction, laterolog, compensated neutron, density, acoustic slowness, nuclear magnetic resonance, etc. are analyzed. It is a component analysis technique applied to evaluate mineral contents, viz. ： set the formation mineral （including pyrite） contents and other parameters deduced from conventional logs and elemental capture spectroscopy （ECS） log as the initial values, use ElanPlus program in GeoFrame software package to simulate dual induction log or dual laterolog curve of formations; adjust the parameters repeatedly until the simulated curve is basically accordant with the real logged curve in intervals not containing pyrite; then regard the latest parameters as the interpretation result. Results of electrical experiment in petrophysics indicate that the increase of pyrite content results in the decrease of saturation index n, but the pore cementation factor m remains steady basically; so the interpretation method and parameters of the saturation interpretation model are modified according to the results. These methods have been applied in production with improved interpretation accordant rate.

关 键 词：测井解释 黄铁矿 地层电阻率模拟 岩电实验 饱和度模型 

分 类 号：P631.84[天文地球—地质矿产勘探]