储层非均匀渗透率与细分沉积相带

Subdivising Sedimentary Facies Zones by Using the Non-Uniform Permeability

储层非均匀渗透率测井解释模型能提供储层的非均匀渗透率,包括储层渗透率序列、储层渗透率平均值以及非均匀系数。这种解释模型所提供的信息远比传统解释模型丰富得多,除了上述信息外,还有储层渗透率序列形状、储层渗透率序列厚度等。当储层参数主要受沉积环境影响时,上述解释结果可用作细分沉积相带的测井参数信息。用南阳下二门油田扇三角洲沉积、江汉拖谢地区浅湖风暴沉积和大庆萨北厚层试验区河流相沉积为例,阐述了用非均匀渗透率细分沉积相带的情况。同时也列举了渗透率分布受构造因素控制的例外情况。

The well log interpretation models for non-uniform permeability (LIMNP) developed by the author can provide non-uniform permeability of reservir in each well, the meaning of non-uniform permeability invols reservoir permeability series, arerage permeability and heterogeneous coefficients. As a consequence. LIMNP provide more information than conventional models. Also, the shape and thickness of reservoir permeability series are included. All of the parameters above can be used as a set of log parameter information to subdivide sedimentary facies zones. The fan-deltaic deposit of Nanyiang oilfield, the shallow-lake stream deposit of Jianghan oilfield, and the fluvial deposit of the test area in Daging are used as examples to explain subdividing sedimentary facies zones by non-uniform permeability, and the permeability distribution of reservior is affected mainly by tectonic factors.