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XI'AN ZZ TOP OIL TOOLS CO.,LTD
XI'AN ZZ TOP OIL TOOLS CO.,LTD

China Downhole DST Super safety valve SSV with remote control manufacturer

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Product Detail

Model No.: TOP-SSV-02
Production Capacity: 1set/month
Delivery Date: 90days
Working temperature: 400F
Material: Inconel 718
Size: 8"
Operation: Remote control
Working condition: Full H2S
Means of Transport: Ocean,Land,Air
Packing: plywood
Working pressure: 105Mpa
H2s: As per NACE MR0175
Type: Surface control
Condition: Stock/unused
Application: Well testing service

A master valve for downhole testing with OD8", ID3", 15000PSI working pressure, Material in Inconel, capable of cutting wireline,coiled tubing

DST super safety valve SSV with remote control panel

Downhole DST Super safety valve SSV with remote control

Super safety valve Halliburton type


DESIGN FEATURES

The Super Safety Valve is controlled by two hydraulic lines and contains a chemical injection port. It is designed to 

close by spring force but has a nitrogen charge chamber to quicken the closing time.  This feature gives the valve the

 ability to cut wireline and coiled tubing without the addition of balance line pressure.  The valve is held open by 

maintaining hydraulic control pressure on the control line.  The nitrogen charge chamber and the balance line 

chamber are the same chamber.  The nitrogen pressure acts directly on the operating piston and a floating check

 valve keeps the nitrogen from escaping from the chamber into the balance line.  The check valve floats on the surface

 of the water (or hydraulic fluid) as fluid is pumped into the chamber. When the fluid is removed, the floating check valve

 sets down on the seat and seals the nitrogen charge in the chamber.

 

No

Specification

8"

1

O.D.

203.2mm

2

Bore Diameter

76.5mm

3

Length

2855.5mm

4

Working pressure

103.5Mpa

5

Internal pressure strength

178.3Mpa

6

External pressure strength

257.8Mpa

7

Tensile strength

6299KN

8

Torque strength

137.6KN.m

9

Service

H2S,NACE MR0175

10

Working temperature

-29oC+204oC

11

Connection thread

5 3/4-4AS.B 5"-4ACME.B

 

The main function of remote control  system is to control the downhole safety valve in case of emergency 

situation to shut off the safety valve

The system contains Three loop, one loop(1) connects with control line in safety valve,one loop(2) connects with

balance line, and rest loop(3) connect with a fusible plug

In case of fire, the temperature on site over 210F, the fusible plug melt, control line loop cut off, the pressure in system released, push the ball valve in safety valve closed to prevent well in safety situation.

Or if other unexpected happen need to close the well, just pull off the handle of emergency shut down valve, the hydraulic oil will push safety valve piston forward up, the ball valve will be closed by spring, to prevent the well.

Or when do coiled tubing testing, extra force need to be added to shut down safety valve ball valve, the loop 2 will in

work

There are other option's operation for such system depended on the purpose of testing.

 

 


DST super safety valve SSV with remote control panel

Downhole DST Super safety valve SSV with remote control

Super safety valve Halliburton type


bigPhoto
skype Mr. Dongwa

Tel: 86-29-81779342
Fax: 86-29-81543379
Mobile: 136 5925 3658
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Company Info

XI'AN ZZ TOP OIL TOOLS CO.,LTD [China (Mainland)]


Business Type:Manufacturer, Distributor/Wholesaler, Service
City: Xi'an
Province/State: Shaanxi
Country/Region: China (Mainland)

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