This paper discussed the action mechanism of the oil well cementing fluid loss additives, especially the action mechanism of the polymer fluid loss additives in detail.
本文探讨了油井水泥降失水剂的作用机理，尤其对聚合物降失水剂作用机理作了比较详细的探讨。
To meet the requirements of well cementing fors mall borehole and small annular space, the composite plastic fluid loss additive PT-2 was studied.
为适合小井眼、小间隙井的固井要求，研究了复合塑性降滤失剂PT—2体系。
During cementing operations, the major issue to be addressed is the displacement of drilling fluid by cement slurry.
固井作业中，首要解决的是注水泥顶替泥浆的问题。
The calculating formula of optimum yield point of cement slurry in cementing has been deduced upon fluid mechanics, which can be taken as the theoretical basis of cementing calculation in oilfield.
然后应用流体力学理论，推导出最优水泥浆动切力的计算公式，为现场注水泥作业提供了理论依据。
During the primary cementing process, usually we pump some fluid with special technical performance between mud and cement slurries. It is called ahead fluid.
在油气井注水泥作业中，常常需要在水泥浆与泥浆之间注入一段具有特殊技术性能流体，这段流体就称为前置液。
It can couple with two plugs simultaneously, and makes the drilling fluid fill into casing in turn and quickly. This can simplify the cementing operation, prevent cement pollution.
可同时装两个胶塞，既可用于常规双塞固井，又可用于连续式双级注水泥作业。
It can couple with two plugs simultaneously, and makes the drilling fluid fill into casing in turn and quickly. This can simplify the cementing operation, prevent cement pollution.
可同时装两个胶塞，既可用于常规双塞固井，又可用于连续式双级注水泥作业。
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