由于地层漏失严重，作业冲砂施工过程中工作液无法将井筒内的砂柱携出地面。
For serious formation leakage, the working fluid can't carry sand column to ground surface in the process of sand washing.
1井是具有钻进时液柱压力与地层漏失压力相接近特点的一口注水井。
The well S1-1 is a water injection well, which has the characteristic-close pressure between liquid column and formation leakage.
试验结果表明：加了纳米颗粒材料的粘弹性表面活性剂(VES)溶液可以在高温下保持较高粘度且可控制其增产液的漏失量。
The experimental results demonstrated that nanoparticles added to a VES solution could maintain viscosity at high temperature and control the fluid loss of VES stimulation fluid.
将钻井完井过程中的漏失分为由裂缝宽度变化引起的漏失和裂缝面向基块的漏失两部分，建立了工作液漏失模型。
The loss are divided into the loss by the changing of fracture width and the loss from fracture face to matrix, and the loss model of working fluid is established.
将钻井完井过程中的漏失分为由裂缝宽度变化引起的漏失和裂缝面向基块的漏失两部分，建立了工作液漏失模型。
The loss are divided into the loss by the changing of fracture width and the loss from fracture face to matrix, and the loss model of working fluid is established.
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