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It is the necessary device of controling overflow and blowout, enforcing oil and gas well pressure control technique. In the course of oil and gas well drilling, drilling fluid in the borehole is surely to be polluted by resident fluid, then the balance between hydrostatic fluid column pressure of drilling well fluid and reservoir pressure will be broken, causing overflow and blowout. When the polluted drilling fluid or hydraulic well whose pump performance is adjusted is cycled out so that the new balance can be achieved, the opening and close of choke valve to control back pressure so that the pressure of well bottom can be maintained in the situation of closing blowout preventer. Besides, Flexible choke&kill device can be used to clean well etc.

 

1)Application


In case of increase in well head pressure, the kill manifold can provide a means of pumping heavy drilling fluid into the well to balance bottom hole pressure so that well kick and blowout can be prevented. In this case, by using blow down lines connected to the kill manifold, the increasing well head pressure also can be released directly for bottom hole pressure release, or water and extinguishing agent can be injected into the well by means of the kill manifold. The check valves on the kill manifold only allow injection of kill fluid or other fluids into the well bore through themselves, but do not allow any backflow so as to perform the kill operation or other operations.
• Working Pressure: 2,000Psi ~ 20,000Psi
• Nominal Bore Diameter: 2 1/16"~ 4 1/16"
• Working Medium: petroleum , natural gas ,water , mud , gas containing H2S,CO2
• Temperature Class: L~U
• Material Class: AA ~ HH
• Product Specification Level: 1 ~ 4
• Performance Requirement: 1 ~ 2

2)Structure


The kill manifold consists of check valves, gate vales, pressure gauges and pipelines. The one end of the kill manifold is connected to the drilling spool and the other end is connected to the pump. The kill manifold and choke manifold are both designed to API 16C and can be used together. The kill manifold is available from 14MPa, 21MPa, 35MPa and 70MPa pressure ratings.

3)Operating Requirements


(1) Working pressure of all pipelines, gate valves and check valves shall be compatible with that of the BOP stack used.
(2) The kill manifold is not intended to be used as common lines for pouring drilling fluid.

 

Type

Working pressure
(Mpa) (psi)

Nominal diameter
(mm) (inch)

Bypass diameter
(mm) (inch)

YGJX140

140Mpa (20000psi)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6)

78(3-1/16),65(2-9/16),
52(2-1/6)

YGJX105

105Mpa (15000psi)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6)

78(3-1/16),65(2-9/16),
52(2-1/6)

YGJX70 YGJX70A

70Mpa (10000psi)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6)

YGJX35

35Mpa (5000psi)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6
)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6)

YGJX21

21Mpa (3000psi)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6
)

103(4-1/16),78(3-1/16),
65(2-9/16),52(2-1/6

 
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  • Pdf: kill manifold.pdf

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