采用海水顶替液，实现套管的浮力漂浮。
Sea water is used as displacement fluid, which can provide the floating force of casing string.
介绍了一种采用正交法优选磷化液参数，从而解决P - 110材质套管接箍的磷化问题。
A kind of the orthogonal optimization in this article by use of phosphorization fluid parameter, thus to solve phosphorization problem in P-110 material quality for casing sleeve.
观测项目有水位、采液量、采气量及套管压力等。
Observed items are groundwater level, oil recovery volume, casing pressure and gas recovery volume.
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