【摘要】 经统计获得各气层段和水层段实际测量电阻率及比值的平均值,得到50多口井的物性参数、含气饱和度、泥质含量与各探测深度电阻率的关系。采用毛管压力法确定含气饱和度,然后再利用饱和度结合本区阿尔奇方程反推电阻率值。将这条反推电阻率与实测深电阻率比较,分析高矿化度泥浆侵入对电阻率的影响。分析表明,在气层段,阵列感应、双感应、双侧向等电测井系列约80%以上表现为低侵,20%以下表现为无侵。在对比度不高的情况下,水层电阻率不受高矿化度泥浆侵入的影响。更多还原

【Abstract】 We obtain actual survey electronic resistivity and the ratio’s mean value of every gas bearing formation passage and water bearing formation passage by counting,and obtain the relations of matter parameter,gas saturation,shale content and each investigation depth electronic resistivity of over 50 wells.We use the capillary pressure law to definite gas saturation,then use the saturation and unify the Archie equation to push the electronic resistivity.Compare the electronic resistivity pushed and the depth sounding electronic resistivity actually measured,and analyze the influence of the invasion of high degree of mineralization to electronic resistivity.The analysis indicated that,the array induce,the double induction,two-sided and so on the electricity logging series above 80% display invading lowly,and under 20% display for no invading in gas bearing formation passage.If contrast ratio is not high,the electronic resistivity of water bearing formation did not affected by the invasion of high degree of mineralization.更多还原