【作者】 黄中伟； 李根生； 纪宏博； 马家骥；

【Author】 Huang Zhong-wei Li Gen-sheng Ji Hong-bo Ma Jia-ji (University of Peroleum, East China, Dongying, Shandong 257061,China University of Petroleum,Beijing, Changping, Beijing 102249,China Liaohe Oilfield, Panjin, Liaoning 124010,China)

【机构】 石油大学(华东)； 石油大学(北京)； 辽河油田；

【摘要】 油田开发过程中,防止油层出砂是维持油田正常生产的一项关键技术措施。对于严重出砂地层的油水井,即使采取了机械或者化学防砂措施,也不能保证油水井的长期稳产, 不得不提出防砂管柱进行更换。本文论述了一种新开发的旋转射流解除井下防砂管堵塞技术,在设计整套井下旋转射流解堵装置的基础上,室内实验了喷头旋转速度-流体压力关系、喷嘴冲击特性等,并在完全模拟防砂管工作条件下,利用样机进行了实际解堵试验。现场试验 10多口井的结果表明,该技术切实可行,效果显著,具有良好的经济和社会效益。更多还原

【Abstract】 To prevent sands production is one of the critical operations in the loose reservoirs. Generally, it is not enough to take mechanical or chemical sand-prevention methods for those high sand production wells, resulting in replacing the sand-prevention tubings. This paper presents a novel technology to use high pressure rotary water jet to remove the blockage of slotted tubings downhole. We designed the blockage-removing tool, and had experiments about the relationships between its rotary speed and pump pressure, the nozzle s impacting force etc. In addition, we simulated the tools performance under practical conditions. The field application on over 10 wells proved this technology feasibility and effectiveness.更多还原