CAJ | 학술논문

双合叶浮球式自灌浆浮箍能够在注水泥时用来控制胶塞的下行位置，以确保管内水泥塞长度，防止水泥浆倒流。通过投球蹩压的方式蹩掉塑料挡管，实现自灌浆和逆向密封的变换，可连续作业，既能增加密封效果，又能节省套管下入的时间。该浮箍可用于直井、水平井、定向井、套管开窗侧钻井等多种钻井的固井作业。减轻了钻井液对套管的浮力，减少了套管下入过程中井眼环空泥浆上返速度，及套管在下放时卡钻的几率，实现了下套管的连续施工，利于井壁稳定；能很好地配合其他固井工具的使用，易安装易钻取，使用安全可靠，值得推广应用。
쌍합협부구식자관장부고능구재주수니시용래공제효새적하행위치，이학보관내수니새장도，방지수니장도류。통과투구별압적방식별도소료당관，실현자관장화역향밀봉적변환，가련속작업，기능증가밀봉효과，우능절성투관하입적시간。해부고가용우직정、수평정、정향정、투관개창측찬정등다충찬정적고정작업。감경료찬정액대투관적부력，감소료투관하입과정중정안배공니장상반속도，급투관재하방시잡찬적궤솔，실현료하투관적련속시공，리우정벽은정；능흔호지배합기타고정공구적사용，역안장역찬취，사용안전가고，치득추엄응용。
The double hinge ball float type of self-filling float collar can be used to control the downward position of the rubber plug while cementing.The course can guarantee the cement plug length of the pipe to prevent cement slurry backflow.Plastic tubes can be limped off by the way of pitching balls and building the pressure in order to achieve the transformation between self-filling and reverse sealing.The float collar can be under continuous operation,which increases the effect of sealing and saves the time of casing.It can be used in vertical wells,horizontal wells,directional wells and casing windowing sidetracking wells of other drilling cementing operations.The device has reduced the buoyancy of the drilling fluid to casing,the return rate of the borehole annulus mud and the sticking probability during casing in the application process.The process has a-chieved the continuous casing construction and improved the well bore stability.The float collar can work well with other cementing tools.It is easy to be installed and drilled,safe and reliable to be used and worthy of promotion and application.