RD Circulation Valve Select Tester Valve Alloy Steel For DST Operation

Introudction Select tester valve

The select tester valve is a part of drill stem testing working string, served as main downhole tester valve. This kind of tester valve is designed with the lock open feature and full bore design

The select tester valve includes four main sections: ball valve section, nitrogen section, upper hydraulic section and the metering section, the ball valve is operated by the annulus pressure

Specification of the downhole tester valve

Operating the Select Tester Valve With The RD Safety Circulating Valve

When running the Select Tester Valve with an RD Safety Circulating Valv in the same tool string operating, the selection of the rupture disk is important. It should be noted that rupture disk should be high enough to allow for the operation of the SELECT Tester Valve.

The pressure required to lock the tester valve open and re-activate it is 1,300 psi + the normal operating pressure, example:

Well Conditions - HYD = 5000 psi BHT = 225

Operating Pressure (from Table) = 987 psi

To lock the tool in the open position, the operating pressure is:

normal operating pressure + 1300 psi = 987 + 1300 = 2287 psi

The Rupture Disc Circulating Valve should be set 1000 psi above the maximum pressure used to operate the tester valve. In the example above the RD Valve should be set to operate at 3287psi above hydrostatic.

Assembly Instructions of the downhole tester valve

After a job the select tester valve should be completely disassembled and cleaned. Visually inspect all sealing surfaces and threaded connections for damage. Any damaged components found that would adversely effect the operation of the tool should be replaced.

Techcore oil tools

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.

* Techcore insist on superior quality, strong packing & timely delivery.

* Third party inspection is available from SGS, BV, DNV etc.

* Techcore do the best to supply thoughtful and prompt after-sales service to guarantee for the customers' benefits

* With 12 months guarantee of the Drill stem testing tools.

* Techcore insist on the traceability of each Drill stem testing tools and related DST parts

from the raw material to the finished products to meet on requirements of onshore and offshore

standards.

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