It controls the flow rate and the pressure of the well head
It's located downstream of the flow head
The maximum size is 128 which it equals two inches
Adjustable choke and fixed choke
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why the adjusable choke on the right side of the chokemanifold ?
The Adjustable choke is in the right side for emergency
if something happen we can easily close it in the same direction of the flow
to be easy to close.
To maintain the direction of flow
to be the same of closing direction of adjustable choke.
read more....
chokemanifold features:-
chokemanifold is used to control the fluid from the well by reducing the flow pressure
and by achieving a constant flow rate before the fluid enter the processing equipment on the surface.
Four gate valves
a posititve or fixed choke.
Tapping points for measurements of the upstream and downstream pressure
Thermometric well to monitor the temprature of the well
An adjustable choke
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changing from the adjustable to fixed choke
preparation of fixed choke
adjust the adjustable choke until the flow stabilizes, then prepare the equivalent fixed choke to be installed
pessurizing fixed choke box
open the downstream valve of the fixed choke box to equalize the pressure (it is advisable to open the downstream rather than the upstream for safety measure)
Diverting the flow from adjustable to fixed choke
open simultaneously upstream valve on the fixed side wile the upstream valve of the adjustable side is closed
flow through fixed choke
the downstream of the adjustable side is closed in pressure bled off on the adjustable choke.
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chokemanifold principle functions
safety function by controlling the well head pressure
it allows different choke sizes to control the flow rate
it prevents wate and gas coming by limiting the flowrate
it prevents formation sabd from entering the well by limiting the flow rate
it ensures critical flow where the pressure fluctuations downstream of the chokemanifold do not affect downhole pressure and flowrate of the well.
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chokemanifold types according to:-
working pressure (5kpsi, 10kpsi, 15kpsi)
types of gate valves (McEvoy, Marbranque, Sereg, and WOM)
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The procedures to change from adjustable choke to fixed choke :-
bleeding the fixed choke between upstream and downstream valves to the tank
prepare the choke bean size
open the fixed choke valve
get the choke bean out and put the new one
close the fixed choke cover
do a function test for the bleeder valve by opening the downstream fixed choke valve
open the upstream fixed choke and close the upstream fixed choke simultaneously
close the downstream adjustable choke
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why the low pilot is upstream of the choke and high pilot is downstream of the choke :-
low pilot is upstream of the choke manifold
becuase if the upstream pressure going down that means that mayebe there is a leak in the upstream line or in the xmass tree we need to fix
high pilot is downstream of the choke manifold
because if the downstream pressure doing up more than the pressure of the high pilot predefined on so the line will shutdown to protect our equipment as a safety meassures
why the adjusable choke on the right side of the chokemanifold ?
-
The Adjustable choke is in the right side for emergency
if something happen we can easily close it in the same direction of the flow
to be easy to close.
-
To maintain the direction of flow
to be the same of closing direction of adjustable choke.
read more....chokemanifold features:-
-
chokemanifold is used to control the fluid from the well by reducing the flow pressure
and by achieving a constant flow rate before the fluid enter the processing equipment on the surface.
-
Four gate valves
-
a posititve or fixed choke.
-
Tapping points for measurements of the upstream and downstream pressure
-
Thermometric well to monitor the temprature of the well
-
An adjustable choke
read more....changing from the adjustable to fixed choke
chokemanifold principle functions
-
safety function by controlling the well head pressure
-
it allows different choke sizes to control the flow rate
-
it prevents wate and gas coming by limiting the flowrate
-
it prevents formation sabd from entering the well by limiting the flow rate
-
it ensures critical flow where the pressure fluctuations downstream of the chokemanifold do not affect downhole pressure and flowrate of the well.
read more....chokemanifold types according to:-
-
working pressure (5kpsi, 10kpsi, 15kpsi)
-
types of gate valves (McEvoy, Marbranque, Sereg, and WOM)
read more....The procedures to change from adjustable choke to fixed choke :-
- bleeding the fixed choke between upstream and downstream valves to the tank
- prepare the choke bean size
- open the fixed choke valve
- get the choke bean out and put the new one
- close the fixed choke cover
- do a function test for the bleeder valve by opening the downstream fixed choke valve
- open the upstream fixed choke and close the upstream fixed choke simultaneously
- close the downstream adjustable choke
read more....why the low pilot is upstream of the choke and high pilot is downstream of the choke :-
becuase if the upstream pressure going down that means that mayebe there is a leak in the upstream line or in the xmass tree we need to fix
- high pilot is downstream of the choke manifold
-
because if the downstream pressure doing up more than the pressure of the high pilot predefined on so the line will shutdown to protect our equipment as a safety meassures
read more....New