Techcore Oil Tools Co.,Ltd,
Professional Provider & Manufacture of DST tools, Coiled Tubing Tools & Wireline Tools
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Slim Hole Tubing String Test Valve TTV For Downhole Drill Stem Testing
The TST (Tubing String Testing) valve is a full-opening valve used to pressure-test the drillstem test string while running in the hole. The valve is operated after it is stung into a permanent packer or after a retrievable packer is set. The TST Valve requires a differential pressure between the annulus and the tubing to shear. The valve can also be used for pipe flexing if it is run below an annulus pressure-responsive circulating valve.
Specification of Tubing String Test Valve
| Size | 99.1mm(37/8") |
| ID | 45mm |
| Working Pressure | 105Mpa |
| Flapper Differential Pressure | 70Mpa |
| Max.Shear pin qty | 12pcs |
| Shear pin Value | 3.5Mpa±0.2Mpa/pc |
| Service | NACE MR 0175, Above 175F |
| Working Temperature | -29oC~204°C |
| Connection Thread | 27/8”IF BXP 27/8"CASB XP |
* The APR DST Tools are interchangeable with Halliburton Type
* Drill stem testing tools are available for cased hole, open hole and slim hole including:
Full bore retrievable packer, full bore retrievable circulating valve, full bore retrievable safety joint, downhole tester valve, select tester valve, LPR- N Valve, omni valve, multi-cycle circulating valve, hydraulic jar, vertical shock absorber, radial shock absorber, RD safety circulating valve, high pressure retrievable packer with bypass, CHAMP packer, IPO valve, tubing string test valve, sleeve type drain valve, rupture disk sampler, super safety valve with control panel, BOP safety valve for downhole operation and so on.