钻进捞砂泵的研制及应用

为了有效解决低压漏失井的井下清砂问题，研究开发了一种具有钻进功能的捞砂泵。主要由井下抽砂泵、储砂筒、动力钻具3部分组成。钻进捞砂泵利用修井机为动力，上下提放油管，将砂子抽至储砂筒内，从而达到井筒清砂的目的。配套的动力钻具具有旋转钻进功能，捞砂迅速彻底。经现场62井次应用，施工简便，清砂成本低，消除了水力冲砂液漏失对低压油层的伤害，捞砂成功率高，特别适用于坚硬砂层的捞砂作业。

Development and Application of Drilling Sand Pump

To solve effectively the problem of sand removing in low-pressure absorption wells,a drilling sand pump was developed.It mainly comprised of downhole sand pump,sand barrel and drilling tool.Drilling sand pump fulfills its function of removing sand accumulation in oil well by cooperating with a workover rig.The workover rig just makes the tubing string go up and down to bring sand into the sand barrel.After 62 times application it shows that it has following features: removing sand thoroughly and quickly because it can drill downwards;easy to use and low operation cost;no damage in low pressure reservoir;applicable to most well,especially to consolidated sand well.