原油在地层压力驱动下流入井筒的过程中,会携带一些砂粒进入井筒内,特别对疏松砂岩稠油油藏地质,产生极大的危害。主要危害表现:井壁失稳、套管损坏、地层破坏、井下及地面设备的损害、管线的磨蚀及堵塞、油层被砂埋等等。这些危害既提高了原油的生产成本,又增加了油田的开采难度。因此,积极的防砂措施是应对出砂的途径。 During the flow of crude oil into the wellbore under the pressure of the formation, some crude sand will be carried into the wellbore, which is particularly harmful to the geology of the unconsolidated sandstone heavy oil reservoir. The main hazard performance: well wall instability, casing damage, damage to the formation, underground and ground equipment damage, pipeline erosion and blockage, buried in the sand and so on. These hazards not only increase the cost of crude oil production, but also increase the difficulty of oil exploration. Therefore, active sand control measures are the way to deal with sand production.