In a sub for continuous drilling which has a hollow opened up and down inside and joins a pair of adjacent pipes in series, the sub for continuous drilling having a sealing unit according to the present invention comprises: a second coupling unit connected to a lower side of a pipe located at an upper side; a first coupling unit connected to the second coupling unit, formed to be selectively fixed to the second coupling unit or independently rotatable, and connected to an upper side of the pipe located at a lower side; and the sealing unit provided in the hollow such that at least a part thereof is in contact with the inner circumferential surface of the second coupling unit and the remaining part is in contact with the inner circumferential surface of the first coupling unit, where the contact area varies according to a vertical stroke of the first coupling unit.

    본 발명에 따른 실링유닛을 포함하는 연속시추용 서브는, 내부에 상하 개구된 중공이 형성되고, 인접한 한 쌍의 파이프를 직렬로 결합하는 연속시추용 서브에 있어서, 상부에 위치된 파이프의 하부 측에 연결되는 제2결합유닛, 상기 제2결합유닛과 연결되되, 상기 제2결합유닛에 선택적으로 고정되거나 독립적으로 회전 가능하게 형성되며, 하부에 위치된 파이프의 상부 측에 연결되는 제1결합유닛 및 상기 중공에 구비되되, 적어도 일부가 상기 제2결합유닛 내주면에 접촉되고, 나머지 일부는 상기 제1결합유닛의 상하 스트로크에 따라 상기 제1결합유닛 내주면과의 접촉 면적이 가변되는 실링유닛을 포함한다.


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    Title :

    Sub for Continuous Boring Having Sealing Unit


    Additional title:

    실링유닛을 포함하는 연속시추용 서브


    Contributors:
    BUWON KANG (author) / YOUNGJUN YOO (author) / CHANGYEOL JEE (author) / KISOO CHO (author)

    Publication date :

    2019-12-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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