Well Testing Tubing String Tester Valve 5" Cased Hole Drill Stem Test Tools

Introudction of Tubing String Tester Valve

The tubing string tester valve is short of TST valve as the part of Drill stem testing working string. The tubing string tester is designed of with a full-opening and used to pressure-test the workstring while running in the hole. The tubing string tester valve is operated after it is stung into a permanent packer or a retrievable packer is set. The tubing string tester valve is applied in cased hole drill stem testing operation and oil well flow operations. The tester valve is consist of flapper valve and spring, locking dogs

and Shear pin section

Features of Tubing String Tester Valve

* The flapper valve required only need 4psi to be openned .

* The testing string can be pressure-tested many times .

* Valve shear rating can be pre-determined at 500psi increments.

* The tubing tester Valve can also be used for pipe flexing.

Operation of the TST Valve

When the tubing string testing valve run in the hole, flapper valve keeps open, 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 when the tubing string tester valve is run in the well.

The tubing string tester valve requires the differential pressure between the annulus and the tubing to shear. After string testing finished,the flapper valve is opened by increasing annulus pressure, also can process closing well operation for tester valve. The tubing string tester valve is applied in cased hole drill stem testing operation and oil well flow operations.

Specification of Tubing String Tester Valve

Techcore Oil Tools expertise in manufacture of the Drill Stem Testing Tools for more than Ten years, the professional Reserch and Development (R&D) department improves the advanced technology in design of the Drill stem testing tools for well testing service.

Techcore designs and chooses the raw material of DST tools according to the customers' oil well condition, and make all our effort to supply the cost effective well testing tools to satisfy the customer, and improve the test tools to meet the industry’s demand for ultra-high pressure and temperature downhole operation.

Other related downhole oil tools manufactured by Techcore

* Drill stem testing tools for cased hole, open hole and slim hole:

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.

*Coiled Tubing Tools: Double slip connector, roll on connector, roll on x thread connector, double flapper check valve, motor head, dual function circulating valve, hydraulic jar, fishing tools etc.

* Perforating tools: Various perforator & perforating gun system, Shaped Charge Body

Tubing String Tester Valve 5" - 15000 psi Cased Hole Drill Stem Test Tools