与水泥浆混合的一种化学添加剂。它用来减少凝固的水泥产生足够的抗压强度所需的时间，使钻井作业能继续进行。
A chemical additive mixed with cement slurry to reduce the time required for the set cement to develop sufficient compressive strength to enable drilling operations to continue.
在井筒中以浆的形式置于某特定位置然后凝固的水泥或类似材料所成的塞子，它们在凝固后能隔离压力或提供机械平台。
A plug of cement or similar material placed as a slurry in a specific location within the wellbore and which has set to provide a means of pressure isolation or mechanical platform.
它的用途就是把凝固的混凝土从各种设备、工具、料斗和泵等水泥设备及表面去除。
Its purpose is to set the concrete from a variety of equipment, tools, hopper and cement equipment such as pump and surface to remove.
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