1. Application
Choke manifold is necessary device to control the well kick successfully and execute the pressure control technology on oil/gas well in the course of drilling, as it is, the device is adopted to execute new drilling-well¡¯s technique of balance pressure, which can avoid pollution of oil-layer, improve the speed of drilling and control blowout effectively. One end of the device connects with the side flange of BOP spool. When BOP closes, it can control the finite pressure from casing by adjusting the choke valve¡¯s opening, so balanced drilling can work under minimum pressure-difference.

2. Configuration
The choke manifold consists of choke valves, gate valves, line pipes, fittings, pressure gauges and other components.

3. Working Principles
When the pressure inside the well rises, opening/closing the choke valves (including manual chokes, hydraulic chokes and positive chokes) on the choke manifold can allow the release of the fluid inside the well so as to control casing pressure, which can be directly blown out through the gate valve if the casing pressure is quite high.

4. Pressure Ratings
The kill manifold is available in pressure ratings of 14MPa, 21MPa, 35MPa, 70MPa and 105MPa, and also can be available upon customer request.

5. Operating Instructions
(1) The working pressure of all components on the choke manifold shall be compatible with that of the BOP stack used.
(2) The choke manifold shall be installed at the place where the operator can reach it easily. The pressure test must be performed prior to installation and the seat test pressure shall be equal to the rated working pressure.
(3) The line pipe shall be level and straight as much as it could. In case of the turn of the line pipe, the 120 degree steel bent pipe shall be used. The bore of the line pipe shall be large enough.
(4) The pressure gauge must be installed.
(5) In winter, the choke manifold can work under a low temperature condition

Parts Lists

Item

Component

Qty

Material

Remark

1

Skid Base

1

 

2

Hydraulic Choke

1

 

3

Five-way Piece

1

4130

 

4

Gate Valve

1

 

5

Pressure Gauge

1

 

6

Needle Valve

1

 

7

Instrument Flange

1

4130

 

8

Gate Valve

10

 

9

Spacer Spool

2

 

10

Studded Cross

5

4130

 

11

Blind Flange

7

4130

 

12

Spacer Spool

1

 

13

Gate Valve

2

 

14

Manual Choke

2

 

* PRODUCTS©¤ KILL MANIFOLD

1. Application
In case of increase of the 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, the increasing well head pressure also can be released directly through blowdown lines connected to the kill manifold so as to release bottom hole pressure, or the water and extinguishing agent can be injected into the well using 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.

2. Configuration
The kill manifold consists of check valves, gate vales, pressure gauges and line pipes. 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 in pressure ratings of 14MPa, 21MPa, 35MPa and 70MPa.

3. Operating Instructions
The kill manifold is available in pressure ratings of 14MPa, 21MPa, 35MPa, 70MPa and 105MPa, and also can be available upon customer request.
(1) The working pressure of all line pipes, 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.

Parts Lists

Item

Component

Qty

Material

Remark

1

Skid Base

1

 

2

Union Flange

2

4130

 

3

Check Valve

2

 

4

Blind Flange

2

4130

 

5

Gate Valve

2

 

6

Gate Valve

2

 

7

Gate Valve

1

 

8

Pressure Gauge

1

 

9

Needle Valve

1

 
 
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