Shanghai MAC Machinery can supply the wellheads and Christmas trees suitable for land and offshore applications to explore, develop and produce oil. We design, manufacture, test and control these products in accordance with API 6A, latest edition and also hold a Certificate of Authority to use the API monogram for API 6A products. The main pressure-containing parts of these products are made from forgings or specially smelted low alloy steel (stainless steel) casings for high bearing strength. Wellheads manufactured by our company are available in pressure rating up tof105MPa, load rating up to 500 tons, material classes from AA through FF, temperature classes from L through V, product specification levels from 1 through 4 and PR1 & 2, and also meet NACE Standard MR0175.


The wellheads, Christmas trees and auxiliary equipments supplied by Shanghai MAC Machinery are available in many different kinds of configurations, meeting requirements of all kinds of bore frames and casing programs and providing service in different working conditions. They are also available upon customer request.


Our wellheads and Christmases have won great acclaims from the customers. Most of our products have been exported in batches to many countries and regions, such as USA, SYRIA, INDIA etc.


Parts List:

Item

Component

Qty

Material

Remark

1

Pressure Gauge

4

 

 

2

Needle Valve

4

 

 

3

Bull Plug

1

4130

 

4

Casing Head Housing

1

4130

 

5

Threaded Gate Valve

1

 

 

6

Casing Spool

1

 

 

7

Flanged Gate Valve

11

 

 


Technical Parameters for X-mas Tree Assembly:

Parameter

Type

KQ65/21

KQ65/35

KQ80-65/35

KQ65/70

KQ78-65/70

KQ65/105

KQ78-65/105

Rated Pressure

3000psi

5000psi

5000psi

10000psi

10000psi

15000psi

15000psi

Nominal
Size

Main

2-9/16

2-9/16

3-1/8

2-9/16

3-1/16

2-9/16

3-1/16

The casing head is a kind of part of connecting casings and wellheads. It is used to support the weight of technical casing and intermediate casing and seal the annular space between the casings, which provides a transition joint for the installation of the tubing head, Christmas tree and other wellheads. The two-side-outlet design allows the casing head to supply cement, monitor and control well's sinking, and inject balance liquids etc.

The casing head produced by our company has a standard configuration, which accepts the casing hangers produced by our company. These casing hangers can be available in different sizes according to the casing procedure and the change of well head condition. The top flange of the casing head is in accordance with the requirements of API type 6B or BX flange.

The options open to the casing head are as follows:
It is available with such bottom preparations as API CSG female threaded, API BTC female threaded, slip-on weld and slips.
It can be provided with weld-group supporting base plate.
Its side outlets are LP threaded or Studded. The studded outlets contain 1 1/2" valve removal threads.
The options open to the casing head are as follows:
It is available with such bottom preparations as API CSG female threaded, API BTC female threaded, slip-on weld and slips.
It can be provided with weld-group supporting base plate.
Its side outlets are LP threaded or Studded. The studded outlets contain 1 1/2" valve removal threads.

Parts List:

Item

Component

Qty

Material

Remark

1

Lockdown Screw

12

4130

 

2

Packing Nut

12

5140

 

3

Packing Washer

24

410

 

4

Packing

60

PTFE

 

5

Slip Hanger Assy.

1

Assy.

 

6

Casing Head Housing

1

4130

 

Parts List:

Item

Component

Qty

Material

Remark

1

Slip Hanger Assy.

1

Assy.

 

2

Lockdown Screw Assy.

12

Assy.

 

3

BT Seal Ring

1

NBR

 

4

Casing Spool

1

4130

 

5

Grease Fitting

4

Assy.

 

Parts List:

Item

Component

Qty

Material

Remark

1

Socket Head Screw

16

1035

 

2

Upper Lock Ring

1

4140

 

3

Seal Ring

1

NBR

 

4

Lower Lock Ring

1

4140

 

5

Positioning Ring

1

4140

 

6

Slip

1

4130

 

Tubing head Spool

1. Tubing head configuration
Tubing head is usually a spool with both flanged ends. It is set on the top flange of casing head to hang tubing hanger and seal
the annular space between the tubing string and intermediate casing, consisting of tubing head spool and tubing hanger.

2. Functions
1) Hang the tubing string inside well;
2) Seal the annular space between tubing and casing;
3) Give a crossover to connect casing head downwards and x'mas tree upwards;
4) The tubing head spool is provided with both side outlets for injection and well clean-up operations.

3. Tubing hanger
Tubing hanger is an assembly to support tubing string and seal the annular space between tubing and casing, which is
connected with tubing and seated into tubing hanger spool by tubing gravity.
It is convenient to operate and replace wellhead so that it is widely used for intermediate depth well and common well.

Item

Component

Qty

Material

Remark

1

Grease Fitting

6

Assy.

 

2

BT Seal Ring

2

NBR

 

3

Tubing Head Spool

1

4130

 

4

Tubing Hanger

1

4130

 

5

Lockdown Screw

12

4130

 

6

Packing Nut

12

5140

 

7

Packing

60

PTFE

 
8

Packing Washer

24

410

 

Item

Component

Qty

Material

Remark

1

Tubing Hanger Body

6

4130

 

2

Nut

2

1045

 

3

Gasket

1

4130

 

4

Seal Ring

1

NBR

 

5

O-ring

12

NBR

 

6

O-ring

12

NBR

 


Tubing Head Adapter


Studded Cross


Flanged Cross


Double Studded Adapter

Technical Parameters for X-mas and Tubing Heads

Parameter

Type

KY65/25

KQ65/60

Rated Pressure

3500psi

8500psi

Nominal Size

2-9/16

2-9/16

Working Temperature

P U

P U

Available Medium

Crude, Water

Crude, Water

Connection Type

Flanged Connection

Flanged Connection

Material Class

AA-DD

AA-FF

PSL

PSL1-2

PSL1-3

PR

PR1-2

 

 
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