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1、密度（Pb）和孔隙度（d）换算表（Pma为骨架值）Pma=2.65gcm3Pma=2.7lgcm3Pma=2.87gcm3Pb(gcm3)d(%)Pb(gcm3)d(%)Pb(g/cm3)d(%)2.621.82.700.62.851.12.632.681.82.822.72.584.22.662.902.803.72.565.52.653.52.784.82.556.12.644.12.765.92.546.72.625.32.756.42.527.92.606.42.747.02.509.12.587.62.728.02.4810.32.568.82.709.12.4611.52.559.
2、42.6810.22.4512.12.549.92.6611.22.4412.72.5211.12.6511.82.4213.92.5012.32.6412.32.4015.22.4813.52.6213.42.3816.42.4614.62.6014.42.3617.62.4515.22.5815.52.3518.22.4415.82.5616.62.3418.82.42172.5517.12.32202.4018.12.54172.3021.22.3819.32.5218.72.2822.42.3620.52.5019.82.2623.62.3521.12.4820.92.2524.22.
3、3421.62.4621.92.2424.82.3222.82.4522.52.2226.12.3024.02.44232.2027.32.2825.12.4224.12.1828.32.2626.32.4025.12.1629.72.2526.92.3826.22.1530.32.2427.52.362732.1430.72.2228.72.3527.82.1232.12.2029.82.3428.32.1033.32.18312.3229.42.0834.52.1632.223030.52.0635.82.1532.72.2830.62.0536.42.1433.22.2632.62.04
4、37.02.1234.52.2533.22.0238.22.1035.72.2433.72.0039.42.0836.82.2234.82.06382.2035.8声波时差（t）-孔隙度（巾S）换算表（Atma为声波骨架值,单位USft）tm=435Atma=47.56AtmI=51.2Atn=52AtnU=53AInB=55Alg=55tststststststil440.34480.35520.6530.7540.7560.79529.9451491.1531.3541.5551.5571.69630.6461.7501.8542.0552.2562.0582.29731.3472.451
5、2.5552.7562.9572.95939832.1483.1523.2563.5573.6583.7603.79932.8493.8533.9574.2584.4594.4614.510033.6504.5544.6584.9595.1605.1625.210134.3515.2555.3595.7605.8615.963610235.1525.8566606.4616.6626.6646.710335.8536.5576.7617.1627.3637.4657.510436.6547.2587.4627.8638648.1668.2105373557.9598.1638.6648.865
6、8.867910638.1568.6608.8649.3659.5669.6689.710738.8579.3619.565106610.26710.36910.410839.658106210.26610.76710.968117011.210940.35910.763116711.56811.76911.87111.911041601136411.76812.26912.47012.57212.411141.861126512.56912.97013.17113.27313.411242.56212.76613.17013.67113.972147414.211343.36313.4671
7、3.87114.47214.67314.77514.9114446414.16814.57215.17315.37415.47615.711544.86514.86915.27315.87416.17516.27716.411645.56615.57015.97416.57516.87616.97817.211746.36716.27116.87517.37617.57717.67917.9118476816.87217.376187718.27818.48018.711947.86917.573187718.778197919.18119.412048.57018.27418.77819.4
8、7919.78019.98220.17118.97519.47920.28020.48120.68320.97219.67620.18020.68121.28221.38421.67320.27720.88121.68221.98322.18522.474217821.68222.48322.68422.88623.17521.67922.383238423.48523.58723.97622.380238423.88524.18624.38824.677238123.78524.58624.887258925.47823.78224.48625.28725.58825.79026.17924
9、.48325.487268826.38926.59126.98025.18425.88826.789279027.29227.68125.88526.58927.49027.79328.48226.58627.29028.39429.1刻度表t5963677175808488929699107At（公制）194207220233246262276289302315325351DEN2.62.552.52.452.42.352.32.252.22.152.12369121518212427303339骨架数值:1骨架(USft)DEN骨架(gcm3)砂岩55.52.65灰岩47.562.71白云岩43.62.87计算孔隙度的公式：声波时差：=（t-At骨架）/（At流体-At骨架）密度：力二（P骨架-P测）/（P骨架-P泥浆）其中At流体公制为620usm,英制为189usftP泥浆我们用Pf即流体密度：1。
