The design approach of balanced-pressure cementing is given for the wells with weak formations.
归纳给出了低压易漏井平衡压力注水泥设计的步骤。
But the cementing operation is very difficult because of the complicated formation pressure system.
而调整井具有地层压力系统复杂的特点，给固井施工带来很大难度。
But the cementing operation is very difficult because of the complicated formation pressure system.
而调整井具有地层压力系统复杂的特点，给固井施工带来很大难度。
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