油水井出砂是困扰油田勘探开发的一个重大难题,严重时会造成砂埋油层或井下工具,导致油井停产和砂卡事故。漏失严重的井会因为冲砂液大量漏人地层,严重污染地层,甚至根本无法水力冲砂。介绍并总结了机械捞砂原理及现场应用情况,采用捞砂泵进行机械捞砂,克服了以上冲砂技术的不足,并在现场应用中取得良好经济效益。 Sand production of oil and water wells is a major problem plaguing the exploration and development of the oilfield. In severe cases, sand-burial reservoirs or downhole tools will be caused, resulting in the shutdown of oil wells and the accident of sanding cards. Wells with serious leakage will leak heavily into the stratum due to flushing sand, causing serious pollution to the formation, or even being unable to be washed by water at all. The paper introduces and summarizes the principle and field application of mechanical sand-harvesting, adopts sand-feeding pump to carry out mechanical sand-harvesting, overcomes the shortcomings of the above sand-blasting technology and achieves good economic benefits in field application.