针对板深7井工程地质情况,固井时采用耐高温低密度水泥浆体系。实验结果表明,耐高温低密度水泥浆体系密度低(1.57 g/cm~3),强度高,稠化时间易于调节,并具有低失水量、低污染、抗高温、防窜和防漏等性能,利于保护产能,满足了深井固井各项指标的要求。声幅测井结果表明,全井优质。 Aiming at the engineering geological conditions of Banshen 7 well, the cementing system with high temperature and low density is used for cementing. The experimental results show that the high density and low density cement slurry has the advantages of low density (1.57 g / cm ~ 3), high strength and easy thickening time, low water loss, low pollution, high temperature resistance, channeling and leakage prevention , Which will help to protect the production capacity and meet the requirements of various indicators of deep well cementing. Acoustic logging results show that the whole well of high quality.