克拉玛依油田一中区克下组冲积扇沉积特征

Sedimentary characteristics of alluvial fan in the Lower Karamay Formation in Yizhong Area of Karamay Oilfield

通过对克拉玛依油田一中区取芯井的观察与描述,以及野外实地考察,从露头及岩心资料、录井资料、测井资料、构造等方面对本区克下组的沉积微相进行研究.根据沉积特征与相标志,在单井相分析及连井对比的基础上,结合冲积扇沉积模式的研究,确定出一中区克拉玛依组自上而下经历冲积扇—河流—三角洲的演化过程。在综合宏观地质背景及微观沉积特征的基础上,根据沉积相的演化规律,建立该研究区的沉积模式.

By the observation and description of the core wells in Yizhong Area of Karamay Oilfield,the sedimentary microfacies were researched form the aspects of outcrop and core data,log data,logging,construction.Based on sedimentary characteristics and phase sign,single-well phase analysis and multi-wells comparison were made to determine the top-down evolution process through the alluvial fan to River to Delta.According to the evolution law of sedimentary facies,the depositional mode of this area was established based on the combination of macro geological background and micro sedimentary characteristics.