快速高效注水泥方法

Rapid and efficient cement injection method

对于小层间封层,灰浆量小,数据要求精确,顶替量难以把握,在替完水泥浆上提油管及反洗井过程中,油管的提放、清水的冲击压力会造成对灰浆的扰动,造成无灰面、等不合格的现象。我们设计出的工具,将水泥浆顶替至油管内,投入工具,继续顶替,当灰浆至预定深度后,工具与底座配合,将油管封闭,阻止油套换流,将灰浆稳定的留存在套管内,上提管柱直接候凝,注灰成功。

For the interlayer sealing layer, the mortar quantity is small, the data requirement is accurate, and the replacement quantity is difficult to grasp. In the process of taking up the tubing on the cement slurry and washing the well back, the lifting and releasing of the tubing and the impact pressure of the clean water will cause the disturbance to the mortar. Cause no ash surface, such as the phenomenon of unqualified. We designed the tool to replace the cement slurry into the tubing, put the tool into the tool, continue to replace, when the mortar reached a predetermined depth, the tool and the base, the tool and the base to seal the tubing, prevent the oil sleeve commutation, and the mortar remained in the casing stably. The pipe string was directly precoagulated and the ash injection was successful.