CAJ | 학술논문

对含动力学抑制剂的聚合醇钻井液水合物抑制性进行了实验研究.实验结果表明,加入PVP的水基聚合醇钻井液能够有效抑制甲烷水合物的生成,而PVP(K90)的抑制效果明显优于PVP(K30).在温度为0℃、初始压力为18 MPa的条件下,只需向水基聚合醇钻井液中添加1%的PVP(K90),就能够确保循环管路中20 h内不会生成水合物.
대함동역학억제제적취합순찬정액수합물억제성진행료실험연구.실험결과표명,가입PVP적수기취합순찬정액능구유효억제갑완수합물적생성,이PVP(K90)적억제효과명현우우PVP(K30).재온도위0℃、초시압력위18 MPa적조건하,지수향수기취합순찬정액중첨가1%적PVP(K90),취능구학보순배관로중20 h내불회생성수합물.
During the drilling in marine gas hydrates bearing sediment (GHBS), the methane gas released by hydrates decomposed enters the circulating pipeline of drilling fluid.Once the condition of temperature and pressure is appropriate, hydrates will be reformed, which will block the circulating pipeline clogging, and lead to a series of drilling accidents. Therefore, the hydrates formation inhibition of the drilling fluid is very critical. The experiments showed that the water-based drilling fluid with polyethlene glycol and PVP can effectively inhibit the methane hydrates formation, and the inhibition of PVP(K90) is obviously stronger than that of PVP(K30). Adding 1% of PVP(K90) into the drilling fluid is suerely able to prevent the formation of any hydrates in the circulating pipeline within 20 h at 18 MPa and 0 ℃.