通常水井填砂问题最严重,因为水井通常有较大的溢流,并且关井压力比较高,因此层间矛盾与阻碍非常明显,导致注灰造成较大的成本,因为不仅需要用到封隔器注灰,而且还会用到压井液,并且伴随的风险很大。打桥塞也需要较大的成本,因为井况很复杂,还存有套管损坏、套管变形的情况,无法达到地质要求。本文针对井下作业中有关填砂技术进行探讨,并论述井下作业中有关填砂技术的实施步骤、实施原则。 Usually the most serious problem is sand filling, because wells usually have large overflow and the pressure is relatively high, so the contradictions and obstacles between layers are very obvious, resulting in greater cost of ash injection because not only the packer Injecting the ash, but also using the killing fluid, and associated with the risk. Bridge plug also need greater costs, because well conditions are complicated, there are still casing damage, casing deformation, can not meet the geological requirements. This paper discusses the related sand filling technology in the downhole operation and discusses the implementation steps and implementation principles of the sand filling technology in the downhole operation.