Gravity drive is effective in the early stages of reservoir development only when there is high relief in the reservoir rock and oil column.
重力驱动仅在储层岩石中存在高闭合度和油柱的情况下在储层开发的早期是有效的。
There are two high value trop of gravity anomaly in the central rise belt-second order structure unit of the Northern depression are the oil and gas prospect district.
对其中的北部坳陷中的二级单元——中部隆起带，提出它的两个重力高值隆起圈闭区是有利的两个含油气远景区。
DTC is characterized by fast cleaning treatment, high-efficiency removing oil, suitable for water treating processes such as separation, gravity sedimentation and floatation.
DTC具有净化作用快，除油功效高，适用于分离、重力沉降和浮选等水处理过程。
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