介绍了煤层气井固井的特点及难点,根据煤层气井的特点及煤储层的特性,提出了一是必须改善水泥浆的性能,采用良好的水泥浆体系;二是采用合适的固井技术。筛选出了适合煤层气井固井的低失水低伤害JC早强水泥浆体系,配套技术首先在ZZ-006井上获得突破,到目前为止,共在沁水盆地现场固井16井次,固井质量优质率85%以上,合格率100%,解决了煤层气井固井存在质量差的问题。 According to the characteristics of coalbed methane wells and the characteristics of coal reservoirs, it is proposed that the performance of cement slurry must be improved, a good cement slurry system should be adopted, and the appropriate cementing technology should be adopted. The JC early strength cement slurry system with low water loss and low damage was selected for the cementing of coalbed methane wells. The matching technology first achieved a breakthrough in the well ZZ-006. So far, a total of 16 cementing wells in the Qinshui Basin have been grouted, Quality and high quality rate of more than 85%, 100% pass rate, to solve the problem of poor quality cementing wells.