Choke manifold is the necessary equipment of the control of well blowout and the pressure control technology of oil-gas well.Using the choke manifold ,implementation of pressure balance drilling technology,can prevent oil pollution,improve drilling speed,can effectively control blowout accident.
1,Through the throttling effect of the choke valve implementation well kill operation.replace contaminated mud out of the well.while controlling the welled casing pressure and standpipe pressure,restore the mud ccolumn ontrol the bottom hole pressure,stop overflow.
2,Through the choke valve Pres-Relief,reduce the wellhead pressure,to achieve the soft closing.
3,Through the choke valve discharge a lot reduce the wellhead casing pressure,protect the wellhead bop stack.
Name | Choke manifold | Kill manifold | |||||
Type | JG/S2-35 | JG/SY-35 | JG/SY2-70 | JG/S2Y2-70 | YG-35 | YG-70 | YG-105 |
Bore and Side bore(mm) | 3 1/8X2 1/13(80×52) 4 1/16X2 9/16(103×65) 4 1/16X3 1/16(103×78) | ||||||
Working Pressure(MPa) | 21 35 | 21 70 | 35 | 70 | 105 | ||
Working Temperature(°C) | -46°C-+121°C | ||||||
Working Medium | Drillingfluid,Mud,Oil(mixed with HS) | ||||||
Control type | Double-wing manual Choke manifold | Double-wing hydraulic Choke manifold | Thr-wing hydraulic Choke valve | Four-wing hydraulic Choke valve | Double-wing instruction has main vent valve |
Choke manifold