摘要
对苏北盆地多口钻井岩心样品的热导率数据,按岩性、深度、孔隙度和孔隙流体进行了统计分析。古近系—上白垩统岩石的热导率总体呈正态分布,平均为2.102Wm-1K-1,岩石的热导率和岩性密切相关,砂岩的热导率普遍高于泥岩。岩石的热导率随深度的增大而增大,但很难用统一的函数来描述其变化关系。热导率和孔隙度显示出很好的相关性,总体随呈孔隙度减小增大,在孔隙度相同的情况下,砂岩的热导率往往高于泥岩。孔隙度、含水和温度对岩石样品的热导率有较大的影响。在计算大地热流时,需要进行孔隙流体和温度的校正。
Thermal conductivity data of drilling core samples taken from Subei Basin was statistically analyzed according to lithology,depth,porosity,and pore fluid.The thermal conductivity is normal distribution with an average of 2.102 Wm^-1K^-1.Thermal conductivity of rock is closely related to lithology,and the thermal conductivity of sandstone is usually higher than that of shale.The thermal conductivity increases with the rise of depth,but it is difficult to describe its relationship as an uniform function.The thermal conductivity is varied with porosity,generally decreases with porosity increase,and the thermal conductivity of sandstone is always higher than that of shale in the case of the same porosity.The thermal conductivity of rock samples is greatly affected by porosity,water content and temperature,so it is necessary to correct pore fluid and temperature by the heat flow calculation.
出处
《复杂油气藏》
2011年第1期10-13,共4页
Complex Hydrocarbon Reservoirs
基金
中国石油化工股份有限公司(P08045)
江苏油田分公司(JS08001)
关键词
苏北盆地
热导率
古近系
Subei Basin
thermal conductivity
Paleogene
