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        Your Position:Home>Products>By-pass Valve>By-Pass Valve
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        By-Pass Valve

        Product Detail

          By-Pass Vavle1430359455104945.jpg

          During drilling operation, when well kick is taken place and bit bore is blocked. The by-pass valve can be opened to go fluid circulation and well killing .Before drilling in flow gas formation, the by –pass valve shall be located near or on the bit.
          When take place well kick and pump pressure is too high or blocked, the following steps can be taken to open the by-pass valve :
          ● Discharge Kelly and drop in a steel ball (or a Nylon ball) which is carried by tool;
          ● Connect with Kelly;
          ● Put ball into retainer by pump circulation;
          ● When fluid is closed, the shear pin can be sheared off with adding 0.5~1.5Mpa pump pressure than original pump pressure;
          ● After pin is sheared, the seal sleeve move down to open the discharge hole and pump pressure come to drop down , then normal circulation and well killing operation can be started.
          When ordering please specify:
          ● O.D. of body;
          ● Connection;
          ● Pump pressure to shear off pin if other than standard.




          Specifications - By-pass Valve

          Model

          Product Code

          O.D.

          (mm)

          Seal sleeve

          (mm)

          Top Connection

          (BOX)

          Bottom connection

          Pump Pressure of

          shear-off shear pin

          O.D. of Steel ball

          (mm)

          PTF105

          F061053

          105

          32

          NC31

          NC31(PIN)

          3-10MPa

          35

          PTF121A

          F061213

          121

          38

          NC38

          NC38(PIN)

          3-10MPa

          45

          PTF127

          F061273

          127

          38

          NC38

          NC38(PIN)

          3-10MPa

          45

          PTF127C

          F061272

          127

          38

          NC38

          3 1/2 REG(BOX)

          3-10MPa

          45

          PTF159

          F061591

          159

          49

          NC46

          NC46(PIN)

          3-10MPa

          54

          PTF159B

          F061594

          159

          49

          NC46

          4 1/2 REG(BOX)

          3-10MPa

          54

          PTF168

          F061681

          168

          50.8

          NC50

          MC50(PIN)

          3-10MPa

          57

          PTF203

          F062031

          203

          62

          6 5/8 REG

          6 5/8 REG(PIN)

          3-10MPa

          65


        Shaanxi BRJ Petroleum Machinery Equipment Co.,Ltd
        Add: Room 2-1014,3rd building,Deyi international center,No.6 Changqing 2nd road,
        Economic and technological development zone,Xi'an,china
        Tel/Fax: 0086-29-89612241   Email: Sales@brj-oiltools.com  http://www.gulfislandsws.com  
        cooperative partner
        国产一区二区精品视频
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