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。
To meet the requirements of well cementing fors mall borehole and small annular space, the composite plastic fluid loss additive PT-2 was studied.
现有分散剂存在抗温耐盐性能不能满足深井、超深井固井要求，有缓凝或起气泡副作用等问题。
The existing dispersants cannot meet the cementing requirements of deep and ultra-deep wells, having low temperature tolerance, low brine resistance, retarding, bubbling, and some other problems.
在常规低压易漏井固井作业中，通常要求使用低密度水泥浆。
The low-density cement slurry is usually required in the common cementing operation in low-pressure leakage well.
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