【单选题】
36、某地区较为普遍的地层水密度为1.07g/cm³，地层垂直深度3000m的正常地层压力为___。
A. 20.972MPa ／m
B. 31.490MPa／m
C. 20.972MPa
D. 31.490MPa
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相关试题
【单选题】
37、通常把压力梯度在___之间的地层压力称为正常压力地层。
A. 10.5～15.5kPa/m
B. 1.0～2.5kPa/m
C. 1.～1.07g/cm³
D. 9.81～10.5kPa/ m
【单选题】
40、一般为___，形成的压力梯度为10.5kPa/m,这相当于总含盐量80g/l的盐水柱在25℃时的压力梯度。
A. 1.07g/cm³
B. 1g/cm³
C. 10.500kPa
D. 1.07kPa/ m
【单选题】
41、按习惯，把压力梯度在___之间的地层压力称为正常地层压力。
A. 大于9.8kPa/m
B. 小于10.5kPa/m
C. 9.81～10.5kPa/m
D. 大于10.5kPa/m
【单选题】
45、井眼形成后井壁周围的岩石应力集中，当井壁周围的岩石所受的切向应力和径向应力的差达到一定的数值后，将形成剪切破坏，造成井眼坍塌，此时的钻井液液柱压力即为___。
A. 地层坍塌压力
B. 地层破裂压力
C. 地层漏失压力
D. 地层承压能力
【单选题】
48、某井井深为3200m时气层压力预报为50MPa，钻开该气层所需的钻井液密度为___。（附加压力当量钻井液密度ρe取0.10g/cm³）。
A. 1.39g/cm³
B. 1.49g/cm³
C. 1.59g/cm³
D. 1.69g/cm³
【单选题】
49、某井用密度1.10 g/cm³的钻井液对于井深3800米处的套管鞋处地层做地破压力实验，当泵压为20MPa 时，地层发生破裂，求地层破裂压力当量密度___g/cm³。
A. 1.53
B. 1.63
C. 1.73
D. 1.83
【单选题】
54、在钻井时，钻井液柱压力的下限要保持与地层压力相平衡，既不污染油气层，又能提高钻速，实现压力控制。而其上限则不能超过地层的___。
A. 地层压力
B. 破裂压力
C. 漏失压力
D. 承压能力
【单选题】
60、由于抽汲压力的影响会使井底压力降低，而降低上提管柱的速度等措施只能减小抽汲压力，但不能消除抽汲压力。因此，需要给工作液密度附加一个安全值来抵消抽汲压力等因素对井底压力的影响。附加方式主要有___。
A. 一种
B. 两种
C. 三种
D. 四种
【单选题】
70、地层压力正常或者接近正常，则地层流体必须一直与地面连通。这种连通常常被封闭层或隔层截断。在这种情况下隔层下部的地层流体必须支撑上部岩层。岩石重于地层流体，所以地层压力可能超过静液压力，形成___地层。
A. 异常低压
B. 异常高压
C. 地层压力正常或者接近正常
D. 碳酸盐型高压
【单选题】
72、在近平衡压力钻井中，钻井液密度的确定，以___为基准，再增加一个安全附加值，以保证作业安全。
A. 钻井液静液压力
B. 地层压力当量密度
C. 地层破裂压力当量密度
D. 地层漏失压力
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( ) 37.The greatest river for navigation is ___________.
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