摘要
南海西部中深层低粘度油层和气层常规测井响应相近,制约着流体性质的准确界定和后期作业方案的实施。利用录井气测各组分比重建立图版是定性识别油气层的基础。声波和密度曲线对含气地层敏感性强,因此能够采用声波、密度和中子三孔隙度交会法识别油气层;研究表明构建声阻抗曲线与纵横波速度比交会能够凸显气层特征;同时从岩石力学参数、声波能量和衰减幅度等方面也能较好区分油气层。多种方法相结合识别油气层,在南海西部复杂油气藏勘探具有良好的应用前景。
Low-viscosity oil has similar logging response to gas in the meduum-deep layers in western south China sea, which restricts accurate definition of the fluid properties and late job implementation.Using component proportion of gas logging to establish the platet is the basis of the qualitative identification of oil and gas layer.Because acoustic and density logging are sensitive to gas bearing formation,acoustic, density and neutron three-porosity cross-plot method can be used to identify oil and gas layer. Studies have shown that acoustic impedance curve and vertical and horizontal wave velocity ratio cross-plot can highlight atmosphere characteristics. At the same time, the rock mechanics parameters, and acoustic energy attenuation amplitude can better distinguish between oil and gas layer. Combination of various methods to identify oil and gas layer has good application prospect in the complex reservoir exploration in west of the south China sea.
出处
《国外测井技术》
2014年第4期48-50,4,共3页
World Well Logging Technology
关键词
轻质油气层
录井
声阻抗
声波能量
light oil and gas layer
geological logging
acoustic impedance
acoustic energy
