在油田开发过程中,由于砂、蜡、稠油等因素,一部分油井必须靠定期的热洗、冲砂来维持其正常生产,以达到油井正常生产、提高时率、延长免修期的目的,但在实施过程中存在热洗质量、洗后污染地层、成本居高不下等诸多方面的问题,需从质量控制和工艺创新两方面着手解决这些问题。 In the process of oilfield development, due to factors such as sand, wax and heavy oil, some oil wells must rely on regular heat washing and sand blasting to maintain their normal production, so as to achieve the normal production of oil wells, increase the rate and extend the period of exemption from maintenance. However, In the process of implementation, there are many problems such as the quality of heat-washing, the contamination of the stratum after washing, and the high cost. These problems need to be solved both in terms of quality control and process innovation.