本文是在摸拟井身温度和压力变化的情况下,对水泥浆柱由于水泥胶凝引起的“失重”和气侵的研究。从实验研究的结果证实了水泥胶凝引起的“失重”和气侵是严重的,而水泥浆胶凝引起的“失重”,通过实验和数学分析后是可以作到定量计算的,这就可能给固井施工中,为防止油、气、水窜工艺技术措施,提供可靠的基本依据。 This article is a study of “weightlessness” and gas invasion of cement grout due to cementitious gelation under the condition of simulating well body temperature and pressure changes. The experimental results show that the “weightlessness” and gas invasion caused by the cementitious cementing are serious, and the “weightlessness” caused by cementitious gelation can be quantitatively calculated through experimental and mathematical analysis, which may give Cementing construction, in order to prevent oil, gas, water channeling technology and measures to provide a reliable basis for the.