塔河油田电阻率泥浆侵入影响分析与校正  

The Analysis and Correction for Effect of Mud Invasion on Resistivity in Tahe Oilfield

作　　者：范文同[1] 章成广[1] 周红涛[2] 马勇[2] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]中国石化西北油田分公司石油勘探开发研究院,新疆乌鲁木齐830011

出　　处：《石油天然气学报》2009年第4期86-90,共5页Journal of Oil and Gas Technology

摘　　要：在钻井过程中,因泥浆和地层水矿化度不同,泥浆侵入必然会导致地层电阻率发生变化,这种地层环境的改变使测井所得的电阻率不能准确地反映地层特征。针对此问题,分析了地层电阻率受泥浆侵入效应的影响,并根据其侵入机理给出了时间推移数值模拟与校正方法。通过对塔河油田相关井的处理表明,该方法是合理、可行的,它能有效地校正地层电阻率因泥浆侵入而造成的"失真",从而获得地层真电阻率。During the drilling procedure process,the mud filtrates continuously penetrated into the formation,for the unbalance exists existed between formation pressure and the mud column pressure in the borehole.Because of the different salinity between mud filtrate and formation water,the mud invasion will would result to induce the formation characters changes of the invaded zone in logging method.In order to solve the problem,the paper analysis the influence of mud invasion were analyzed,for this would effect the formation resistivity measurement,and a time-elapse numerical simulated simulation analysis and correction were analyzed.The method,based on the invasion,is induced.It is used in Tahe Oilfield,it is feasible.

关 键 词：泥浆侵入 电阻率测井 数值模拟 侵入校正 

分 类 号：P631.84[天文地球—地质矿产勘探]