华北廊固凹陷低电阻油气藏测井解释技术

Low-resistant Logging Interpretation Technique for Oil and Gas Reservoir of Langgu Sag in North China

在研究廊固凹陷低阻轻质油气层的成因机理基础上,针对该凹陷复杂断块轻质油气藏具有低构造幅度、低电阻率、低地层水矿化度、中低渗透性、岩性细的“四低一细”和层状油气层的特点,依据轻质油气藏在测井上的响应特征,对轻质油气层进行定性识别及定量解释。测井解释成果已应用于储量计算及油田开发工作中,取得了良好的经济效益。

Based on the study of the genetic mechanism of the low-resistant light oil and gas zone in Langgu Sag, this paper elaborates the characteristics of low structural amplitude, low-resistivity, low formation water salinity, medium and low permeability, and fine lithology i.e.'four lows and one fine' ,and layered oil and gas zone for the complicated faulted block. The paper also gives the qualitative identification and quantitative interpretation of the light oil and gas zone on the basis of the logging response features of light oil and gas reservoir. This logging interpretation result has been applied in calculation of the reserve and oil field development, producing good economic results.