利用国产测井系列资料识别夏子街油田三叠系油气层

DISTINGUISHING BETWEEN OIL AND GAS ZONES OF TRIASSIC IN XIAZIJIE OILFIELD USING DOMESTIC LOGS SYSTEM

由于石油及天然气均不导电,使得油层和气层在电阻率测井曲线上的显示通常没有大的差别,因此,利用电阻率测井发展起来的、依据地层含水饱和度参数进行测井解释的常规方法只能区分油气层及非油气层,但不能识别出是油层还是气层。 本文通过分析夏子街油田三叠系所具有的国产测井资料对油气层的响应特征,认为在夏子街油田三叠系应用电阻率及声波测井识别出油气层后,利用中子伽马及声波测井组合可进一步识别出是油层还是气层。本文给出的实例表明,效果是令人满意的。

Owe to nonconductivity of oil and gas, there is usually little differences between their displays in resistivity logs. Therefore conventional log analysis method developed by resistivity log using water saturation can only distinguish hydrocarbon zones from non—hydrocarbon zones, but can't tell oil zones from gas zones.Through the analysis of resoponse characteristic to oil and gas zones in domestic logs of Triassic in Xiazijie oilfield, this paper suggests that by combination of neutron gamma log and sonic log we could further distinguish oil zones from gas zones after we found hydrocarbon zones in Triassic of Xiazijie oilfield by resistivity and sonic logs. Examples showed in the paper tells good results.