摘要
在对普光地区189块岩心岩石物理实验资料分析的基础上,讨论了地层水矿化度、泥质含量、温度以及孔、洞、缝发育程度对孔隙结构指数m值和饱和度指数n的影响。认为,随地层水矿化度的增大,m、n值呈增大趋势;随温度和孔隙度的增大,m增大,n减小。利用岩电实验资料,做出了地层因素-孔隙度关系图版和电阻率增大系数-含水饱和度关系图版,从而计算出m、n值。经过现场实例验证,测井处理计算的含水饱和度与岩心分析含水饱和度相关系数较高,表明利用该规律选择的岩电实验参数m、n值适合缝洞性储层的含水饱和度计算。
In terms of the experimental data of 189 pieces of cores in Puguang area, analyzed are the influence of formation water salinity, shale content, temperature and the growth degrees of pores, caverns and fractures on rock electrical parameters m and n Considered that rock electrical parameters m and n show an upward tendency when the formation water salinity increases; when the temperature and formation porosity increase,m increases and n decreases. Formation factorporosity chart and resistance increase coefficient-water saturation chart are plotted using rocks physics experimental data, and then get the pore structure factor m and saturation factor n Prac tical well logging shows that correlation coefficient between logging-calculated water saturation and core analyzed saturation is high. It is concluded that the rock electrical parameters m and n which are selected by this method, are fit to the calculation of water saturation in fractured and caved reservoirs.
出处
《测井技术》
CAS
CSCD
北大核心
2009年第2期130-134,共5页
Well Logging Technology
关键词
测井解释
含水饱和度
地层水矿化度
泥质含量
温度
岩电参数
log interpretation, water saturation, formation water salinity, shale content, temperature, rock electrical parameter
