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China Tubing string testing vale drill stem testing manufacturer


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Tubing string testing vale drill stem testing 

Price: 500.0~10000.0 USD 
Payment Terms: T/T 
Special Groups: DST Tools (146)
Place of Origin: Shaanxi, China (Mainland) 
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Product Detail

Model No.: TOP-DST-10
Production Capacity: 8 pcs/month
Delivery Date: 15~30 days
Type: full bore drill stem testin...
service: H2S
Condition: New
Means of Transport: Ocean
Packing: polywood case
Application: oil well testing
working pressure: 10000psi ~ 15000psi
standard: NACE MR0175
Size: 5"

The tubing string testing (TST) valve is a full-opening valve used to pressure-test the workstring while running in the hole.

TST valve

The tubing string tetsing valve TST valveis operated after it is stung into a permanent packer or a retrievable packer is set. The TST valve requires a differential pressure between the annulus and the tubing to shear. The TST valve can also be used for pip flexing if it is run below an annulus pressure-responsive circulating valve.
In downhole operation, the valve can not be closed after open.
When running in the hole, the tester valve must run in downhole in opening condition, after string testing finished, increasing annulus pressure made the flapper valve open, also can process closing well operation for tester valve(pressure-responsive valve).
The TST valve consists of:   
• Flapper valve and spring.
• shear pin section
• locking dogs

Tubing string testing valve TST valve
Oil well drill stem testing Tubing string tester valve TST valve
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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