J9九游会AG

电磁波测井新技术


电(dian)磁(ci)波测井通过发射天(tian)线向(xiang)地(di)层发射电(dian)磁(ci)波,再由两个接(jie)收天(tian)线接(jie)收来自地(di)层的电(dian)磁(ci)波的相位(wei)差值及幅度比,通过函数(shu)计算得出地(di)层的电(dian)阻率(lv)和介电(dian)常数(shu)。  

技术特点(dian):2兆赫兹电(dian)(dian)(dian)(dian)磁波测(ce)井只与地(di)层(ceng)(ceng)电(dian)(dian)(dian)(dian)阻率(lv)特性有关,受(shou)围岩影响小、探测(ce)深(shen)度较(jiao)大、分层(ceng)(ceng)能(neng)力较(jiao)强;60兆赫兹电(dian)(dian)(dian)(dian)磁波测(ce)井不(bu)但与地(di)层(ceng)(ceng)电(dian)(dian)(dian)(dian)阻率(lv)特性有关,还与地(di)层(ceng)(ceng)介电(dian)(dian)(dian)(dian)常数特性有关,受(shou)地(di)层(ceng)(ceng)水(shui)矿化度影响小,适合于地(di)层(ceng)(ceng)水(shui)矿化度未(wei)知或难(nan)于确定(ding)的(de)地(di)区;地(di)层(ceng)(ceng)岩石(shi)骨架的(de)介电(dian)(dian)(dian)(dian)常数比较(jiao)稳定(ding),储集层(ceng)(ceng)中所(suo)含(han)流体的(de)介电(dian)(dian)(dian)(dian)常数相差悬殊(shu),因此利用电(dian)(dian)(dian)(dian)磁波资料能(neng)较(jiao)好地(di)判别油(you)、水(shui)层(ceng)(ceng)。  

地质应用:确定(ding)含水饱和度(du);判(pan)断油水层(ceng);判(pan)定(ding)水淹层(ceng),划分水淹等(deng)级。



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