Downhole Tester Valve Operation High Pressuer Drill Stem Testing Valve 5" x 15000psi

Downhole Tester Valve High Pressuer Drill Stem Testing Valve 5" x 15000psi

Introudction Select tester valve

The select tester valve is a kind of main downhole tester valve improved from the LPR- N valve, it is the lock open tester valve with a full opening design and operated by annulus pressure which is used in cased holes DST operation.

The select tester valve includes four main sections: ball valve section, nitrogen section, upper hydraulic section and the metering section.

Specification of the downhole tester valve

Operating the Downhole Tester Valve With Multi-cycle Circulating Valve

During cased hole drill stem testing operation, when using a Multi-cycle Circulating Valve in connection with the downhole select tester valve, the major area of concern is the operating pressure. The Select Tester Valve uses an operating pressure that is significantly lower than what has been used in the past to operate the standard LPR-N or Multi-cycle Circulating Valve.

Under optimum conditions the operating pressure for the Select Tester Valve should be enough to operate the Multi-cycle Circulating Valve. If the conditions are less than ideal and you need to use a higher operating pressure to cycle the Multi-cycle Circulating Valve, it must be applied in stages to prevent premature operation of the "lock open" feature of the Select Tester Valve. It is recommended that when applying pressure in excess of the "normal" operating pressure of the Select Tester Valve that:

SELECT is in the "Normal Mode"

1. Apply normal operating pressure + 300 psi max. on the initial pressure increase. Any additional pressure must be applied in stages.

2. Wait 5 minutes.

3. Apply additional pressure in stages of 100 psi per minute.

SELECT is in the "Locked Open Mode".

1. Apply the operating pressure+400psi max. On the initial pressure increase, any additional pressure must be applied in stages.

2. Wait 5 minutes

3. Apply additional pressure in stages of 100 psi per minutes.

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

We approach every client’s enquiry with meticulous attention to technical specifications, and a high level of appreciation for their urgency.

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.

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