泌阳凹陷南部陡坡带泌304区块测井解释方法研究

Study on method of well logging interpretation at B304 block on the south actic region in Biyang depression

在含泥质砂砾岩储层中,由于岩性及泥质的影响大于含油性对电性影响,电阻率曲线对油、水层的特征响应较差,因此利用常规的油、水层判别图版识别油水层是十分困难的。在充分考虑泥质含量对含油性特征的影响的基础上,选用声波时差测井资料进行泥质校正,利用阿尔奇经验公式计算出储层含水饱和度,根据含水饱和度的高低进行油、水层判别并用试油结果加以验证,能较好解决泌304区块油、水层的识别。

In the reservoir of mud-bearing glutenite,because the effect of lithology and argillaceous rock on electric property is larger than that of oil-bearing character,that is,the re- sponses of resistivity curve to the characteristics of oil hori- zon and water layer are insensitive,it is difficult to identify oil and water horizons using regular discrimination plates. On the basis of calculating the effect of shale content on oil - bearing character,the oil horizon and water layer in 13304 block are identified by selecting well logging data of interval transit time to calibrate the shale content,using the archies formula to calculate the water saturation of reservoir,and distinguishing the water layer and oil horizon in terms of wa- ter saturation and justifying the results by production test.