水合物的存在给深海钻井、固井和生产带来了很多难题。如果作业期间水合物不稳定,气体或固体可能上升至地面而造成一系列问题。因此,从钻井到生产作业期间,必须防止破坏水合物的稳定性。由于环空大,表层套管固井时水泥浆体积很大,水化期间会产生大量的热,此外,油气生产期间会使 The presence of hydrates poses many challenges for deepwater drilling, cementing and production. If the hydrate is not stable during the operation, gas or solids may rise to the surface causing a series of problems. Therefore, from drilling to production operations, the stability of hydrates must be prevented. Due to the large annulus, the cement slurry in the surface casing cementing is very bulky and will generate a lot of heat during the hydration. In addition, during oil and gas production,