The paper gives an introduction to the structure , operating requirements and applications in olifields of Type SJG A double stage cementing implement.
介绍了SJG-A型双级注水泥器的结构特点、使用要求及现场应用情况。
Gradient multi-setting cement slurry system can take the place of double stage cementing in long isolation sections in certain degree, and it displaces many advantages.
对于封固段较长的固井作业，采用梯度多凝水泥浆体系，在一定程度上可以代替双级固井，具有很强的优越性。
According to the basic conditions of Tahe oil field, the paper discusses the reasons of using single stage double plugging cementing methods in intermediate casing.
根据塔河油田的基本情况，分析了技术套管固井使用单级双封固井技术的原因。
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