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

China Well testing Super safety valve manufacturer

8th

Gold Index: 84221

You are here: home  > Drill stem testing tools / DST  > Super Safety valve DST tools  > Well testing Super safety valve

Product Detail

Model No.: Super safety valve - Inconn...
Production Capacity: 1set/month
Delivery Date: 90days
Working temperature: 400F
Material: Inconel 718
Size: 8"
Operation: Remote control
Brand: ZZ TOP
Means of Transport: Ocean,Land,Air
Packing: plywood
Working pressure: 105Mpa
H2s: Full H2S
Type: Surface control
Condition: Stock/unused
ID: 8"

Super Safety Valve is for downhole testing with OD8", ID3", 15000PSI working pressure,full H2S Service, capable of cutting wireline,coiled tubing

Drill stem testing tools

Super Safety Valve

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.


OPERATIONS GUIDELINES

 Typically, the nitrogen charge chamber of the valve is charged with nitrogen to 1000 to 1500 psi. This charge is sufficient to cut 7/32 inch monoconductor cable, but it is not adequate to cut coiled tubing.  The valve can

 be charged with nitrogen sufficient to cut coiled tubing, but this raises the required hold open pressure.  The tool is 

capable of cutting 1.50 inch OD x 0.125 inch wall thickness coiled tubing by application of balance line pressure. The 

hold open pressure varies with well conditions; however, it is roughly 2.5 times the nitrogen charge pressure. 

 All lines on the valve will hold 10000 psi, but a differential pressure between the control and balance line should not 

exceed 3000 psi under normal circumstances (control line being higher).  This prevents the application of excessive 

stress to the ball.  (10000 psi in the balance line with no control line pressure is within operational limits.)

Typically, the valve is run into the BOP where the valve controls the tubing area while the BOP pipe ram seals off the 

annulus.

 

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

 

 

ZZ Top Oil Tools Co.,Ltd, with the professional technical team, specialized in providing cost-effective oilfield 

equipment, and at the moment ZZ TOP invested in two sub-factories, one is for Drill stem testing tools 

and some downhole tools, The other one is for wellhead equipment.

As one group, ZZ TOP provides the clients highly efficient & expertized service as well as more comprehensive 

products to meet the customers' requirements during the work, and insists on "Traceability, Serialization" for 

each tools and related parts. 

 

 

 

Ms. Elaine
skype Ms. Elaine

Tel: 86-29-81779342
Mobile: 136 2920 7466
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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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