CAJ | 학술논문

在钻井过程中井口发生溢流时,为封堵钻柱与套管间环空内快速上窜的返回泥浆液或者高压油气,需及时关闭闸板防喷器,而闸板防喷器的4大密封,如闸板顶部与壳体的密封、闸板前部与钻杆的密封、壳体与侧门间的密封以及活塞杆与侧门间的密封,需同时起作用才能实现可靠的关井.对闸板防喷器4大密封部位的结构、密封原理和失效形式进行分析,为闸板防喷器密封的优化设计以及现场维修提供了参考.
재찬정과정중정구발생일류시,위봉도찬주여투관간배공내쾌속상찬적반회니장액혹자고압유기,수급시관폐갑판방분기,이갑판방분기적4대밀봉,여갑판정부여각체적밀봉、갑판전부여찬간적밀봉、각체여측문간적밀봉이급활새간여측문간적밀봉,수동시기작용재능실현가고적관정.대갑판방분기4대밀봉부위적결구、밀봉원리화실효형식진행분석,위갑판방분기밀봉적우화설계이급현장유수제공료삼고.
When the overflow occurred during drilling wellhead,in order to block the returned slurry liquid upward from the annular space between drill pipe and casing or high pressure oil and gas,the ram blowout preventer is needed to close timely,and its four main seals,the ram top and the shell,the ram front and the drill pipe,the shell and the side door and the piston rod and the side door should work simultaneously to achieve reliable closing well. The structure and sealing prin-ciple and failure modes of four main seals of ram blowout preventer were analyzed,which provide an important reference for the optimization design and on-site maintenance of the seal of ram blowout preventer.