DST 3 7/8" tubing string testing valve TST valve from China manufacturer

DST 3 7/8" tubing string testing valve TST valve

Price:	500.0~10000.0 USD
Payment Terms:	T/T,L/C,D/A
Special Groups:	DST Tools (146) drill stem testing (124)
Place of Origin:	Shaanxi, China (Mainland)


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Product Detail

Model No.: DST - 3 7/8" TST valve

Production Capacity: 10 pcs/month

Delivery Date: 7 days

Type: drill stem testing tools

service: H2S&CO2

Working condition: High pressure high temperat...

Operate: ANNULAR PRESSURE OPERATED

Delivery: On shelf stock

Means of Transport: Ocean,Land,Air

Packing: polywood case

Application: oil well testing

working pressure: 15000psi

standard: NACE MR0175

Size: 3 7/8" Tubing string testi...

Brand: ZZTOP

3 7/8" Tubing string testing valve (TST valve) is a full-opening valve produced by ZZ TOP as per the standards NACE MR 0175 for the full H2S service

Rupture Disk Tubing String Testing Valve
RD TST valve

The rupture disk (RD) tubing string testing (TST) valve is a full-opening valve used to pressure test the workstring while running in the hole. The valve is operated after it is stung into a permanent packer or after a retrievable packer is set. To operate the tool, annulus pressure is applied, rupturing the disk moving the mandrel up and pushing the flapper open.The TST valve consists of flapper valve and spring, shear pin section and locking dogs

Features

• Flapper valve requires only 4 psi to open.

• Workstring can be pressure tested as many times as required as it is run in the hole.

• Valve shear rating can be predetermined by the rupture disk.

• Valve can also be used for pipe flexing.

Techinal
DST Tools 3 7/8''Rupture Disk (RD) Tubing String Testing (TST) Valve

Materiall:	Alloy AISI 41xx and Inconnel
Operate:	Full-opening, annulus pressure
Size:	3 7/8 inch & 5 inch
Working condition:	High pressure high temperature
Working pressure:	10000psi ~ 15000psi
Service	H2S above 175^oF ; Full H2S
Application:	Drill stem testing
Standard:	NACE MR0175

Operation

The TST valve is normally set to operate at a pressure around 1000 psi (69 bar) above well hydrostatic at the tool. This allows the tool to be run in and operated when pressuring up on the first annulus cycle. When the TST flapper valve opens, it allows the workstring to fill up. The shear pins hold the mandrel in place. The workstring can be pressure tested as many times as required as it is run in the hole. While the workstring is stationary, a spring keeps the flapper valve closed. After the workstring pressure test is complete, the tool is sheared open when annulus pressure is applied to rupture the disk moving the mandrel up and pushing the flapper open, allowing the locking dogs to engage. The tool is then fully open.

Tubing String Testing Valve Pressure Testing Chart
3 7/8Tubing string testing valve drill stem testing

Pressure Testing Equipment

3 7/8Tubing string testing valve drill stem testing

Drill stem testing tools package
3 7/8Tubing string testing valve drill stem testing

Tracebility of DST Tools

ZZ TOP OIL TOOLS is the professional manufacturer for the drill stem testing tools and surface testing equipment. All the DST tools are conformed with NACE MR 0175 with traceability,and the DST tools can be worked in H2S & CO2 above 175 F and full H2S, also with the skilled and experienced engineers, we can design the drill stem testing tools as per customer's well condition. Moreover, we supply the training in our factory and operation instruction at the well site. The DST tools are exported to USA, Colombia, India, Pakistan, Iran, Brazil etc. and enjoy the good reputation from the customers.

To shorten the delivery time, we proceeded the DST Tools in stock:

Packer,circualting valve,select tester valve,APR N-valve,OMNI valve,Hydraulic Jar,Tubing string tester

1. Full bore Packer, 7" Casing, working pressure 70Mpa, Working Temperature 400F, Connection: IF, 4set

2. Tester valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4 sets

3. Hydraulic Jar,5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets

4. Rupture disk Circulating valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets

5. Flowhead (surface test tree), 3 1/16", working pressure 70 Mpa. 1set

Should you have any interest or inquiry on the Drill stem testing tools, contact us freely.