摘要
以油井采出液为试验介质研究油井采出液对封隔器丁腈橡胶(NBR)密封件性能的影响。结果表明:在模拟井况下,封隔器NBR密封件出现老化现象,随着浸泡时间的延长,密封件的邵尔A型硬度逐渐增大,拉伸强度和拉断伸长率逐渐下降,老化机理以分子链交联老化反应为主;随着温度的升高,老化速率快速增大;高含水率的油井采岀液对NBR密封件的性能存在负面影响。
The effect of oil-well produced water on the properties of NBR packer element was in- vestigated using oil-well produced water as test medium. The results showed that, the properties of NBR packer element changed with aging under the simulated well condition. With increase of soak time,the Shore A hardness of the packer element gradually increased, and the tensile strength and elongation at break gradually decreased. The main aging mechanism was cross-linking temperature increased, the aging rate increased rapidly. The oil-well produced water cut wells had negative impact on the properties of NBR packer element.
出处
《橡胶工业》
CAS
北大核心
2012年第8期494-498,共5页
China Rubber Industry
关键词
油井采出液
丁腈橡胶
封隔器
耐老化性能
oil-well produced water
NBR
packer
aging property reaction. As the from high water
