摘要
以自然电位理论为基础 ,用实验方法揭示了水淹层自然电位基线偏移的机理及影响因素。阐述了储层岩性、物性、润湿性、井筒流体性质、地层水及注入水性质和水型等影响因素对自然电位基线偏移情况的影响及其相互关系。将此研究成果用于识别孤东油田四区馆上段高孔高渗、疏松河流相储层中不同水淹时期的水淹层 ,通过对多种影响因素的校正 ,提高了利用自然电位曲线识别水淹层的精度 。
Waterflooding mechanism of spontaneous potential and influencing factors are uncovered theoretically and experimently. The laws and relation between spontaneous potential baseline shift amplitude and the influencing factors are acquired. The factors include reservoir lithology, petrophysical, wettability, fluid property in well, formation water property, injected water property and water type. Accuracy of waterflooding discrimination can be improved by adjusting many influencing factors of spontaneous potential curve. Good results are acquired in well evaluating of different waterflooding phases in reservoir with high porosity, high permeability and unconsolidated river sand of Ng of fourth block in Gudong oilfield.
出处
《石油大学学报（自然科学版）》
EI
CSCD
北大核心
2001年第1期93-95,98,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
水淹层
自然电位
基线偏移
实验
孤车油田
waterflooding zone
spontaneous potential
baseline shift amplitude
influence factors
experiment
