泥浆柱
In case there is filling agent inside fractures, mud invasion depth increases significantly with the increase of mud column pressure.
当裂缝有充填物时,随泥浆柱压力增加,泥浆侵入深度增大,当泥浆柱压力超过第一临界值后,侵入深度急剧增大。
During the drilling procedure, the mud filtrates continuously penetrate into the formation because of the unbalance between the mud column pressure in the borehole and formation pressure.
在钻井过程中,井筒泥浆柱压力和地层压力的不平衡使得泥浆滤液不断渗入地层。
as the mud column gets heavier, less and less gas is detected at surface.
随着泥浆柱越变越重,地表所检测到的天然气也越来越少。
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