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
| Tools: | Downhole Tester Valve |
| Application | Cased Hole Drill stem testing Operation |
| Tool Size: | 5 inch |
| Standard: | NACE MR0175 |
| Product model: | Select tester valve full bore type |
| Working pressure: | 10000psi ~ 15000psi |
| Service: | H2S, CO2 Above 175oF and Full H2S |
| Working condition: | High pressure high temperature (HPHT) |
| Package : | wood case |
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.
