... 多级净化 stage purification 分级注水泥接箍 stage-cementing collar 分段压裂 staged fracturing ...
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mechanical stage cementing collar 机械式分级箍
pressure differential stage cementing collar 压差式分级箍
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The features of buried hill reservoir are described, and the use of two-stage cementing method, continuous open stage collar and cement basket is also presented.
文中介绍了潜山油藏特点及采用二级注水泥方法，采用连续打开式分级箍、水泥伞。
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