core porosity meaning in English

岩心孔隙度

( 5 ) discovered a abnormal law that the sonic velocity was enlarged with increasing of die core porosity in the sandstone reservoir of the haojiagou formation in triassic , and gave a geologic interpretation about the phenomenon . it was helpful to convert the sonic velocity into die porosity correctly in reservoir . ( 6 ) gave a primary reason for producing a little oil and gas in the well ha - 2 and ha - 3 of the sidaogou structure
通过取心段地层岩性与声波测井速度分析，首次发现郝家沟组储层段岩芯孔隙度与声波时差(声波速度)存在反常变化规律，并对这种现象进行了较合理的地质解释；提出了储层预测中应注意的问题，首次提出在本区按常规方法利用声波时差换算孔隙度存在陷阱。