Downhole Tester Valve
Xi'an ZZ Top Oil Tools Co.,Ltd is one of the top level downhole tester valve manufacturers and suppliers,Website:, with professional factory, we are able to produce API and oilfield lpr-n valve, dst lpr-n valve, well testing n valve, welcome to contact us.
Briefly Introduce:
The downhole tester valve/LPR- N Tester Valve is a full-opening, annulus pressure operated valve. It permits measuring multiple closed-in pressures in cased holes where pipe manipulation is restricted and a full-opening string is required.
The nitrogen chamber is charged at the surface to a selected pressure determined by surface temperature and bottom hole temperature and pressure.
The Tester valve consists of Ball valve section, Power section and Metering Section.
Features
•The ball valve operates independently of internal pressure changes, like with acidizing or fracturing operations, no need special bypass tools, but if a production packer is used, the pressure will transfer to formation directly if no bypass tool involved.
•Drastic temperature changes, like in acidizing operations, have little affect on the tool.
•Advanced materials and processes provide a unique metal-to-metal seal for exceptional gas-holding capabilities.
Specification
Size/in
OD/
mm
ID/
mm
Working pressure
/ Mpa
Service
environment
Working
temperature
Connection
3 7/8”
98.5
45
70
105
Mud, Crude Oil,
Natural gas with
H2S and acid
--29oC ~
+204oC
EUE
IF
CAS
5"
127.5
57
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