Downhole Tester Valve

INQUIRY PDF Format

Description

Downhole Tester Valve introduction

The downhole tester Valve is used for drill stem testing service. There are two types of downhole tester valve we supplied including select tester valve and LPR- N valve. The select tester valve is a full opening, annulus pressure operated tool used in cased holes. This tool has the capabilities of taking multiple downhole closures where pipe manipulation is restricted and a full opening string is desired

Structure of downhole tester valve - select tester valve

The select tester valve is composed of four basic sections; ball valve section, upper hydraulic section, nitrogen section and the metering section.

* The ball valve section contains the ball valve and the mechanism that rotates the ball when the tool is activated; the ball is rotated to the open

position allowing the reservoir to flow into the testing string.

* The upper hydraulic section is contained between the upper annulus ports and the nitrogen filler valve. The critical part of this section is the

metering (power) cartridge and selector.

* The nitrogen section is composed of the nitrogen case, nitrogen mandrel, floating piston and nitrogen filler valve. The nitrogen acts as an

adjustable spring and provides the force needed to close the ball valve.

* The metering section is composed of the lower oil chamber, metering cartridge and floating piston. The oil in this section acts as a barrier

between the tool and the annular fluid. This insures that only clean fluid passes through the metering cartridge

Technical parameter

NO.	Specification	5”
1	OD	5”(127mm)
2	ID	2.25”(57mm)
3	Length(mm)	288.2”(7319.5mm)
4	Working pressure	15000 PSI(105Mpa)
5	Maximum open pressure differential	5000PSI(35Mpa)
6	Internal Pressure Strength	151Mpa
7	External Pressure Strength	141Mpa
8	Torque strength	30.9kN.m
9	Service Environment	Mud, crude oil, natural gas with H2S, Apply to NACE MR0175-2003
10	End connection	3 7/8CAS. BXP, 3 1/2 IF BXP
11	Service temperature	-20^oF~400^oF

Specification	5”
OD	127.5mm
ID	57mm
Length	6555mm
Working pressure	105Mpa
Ball valve Open Differential pressure	35Mpa
Ball valve top and bottom differential pressure	70Mpa
Internal Pressure strength	146Mpa
External pressure strength	136Mpa
Tensile strength	2034KN
Torque strength	31.6KN.m
Circulating Flow area	2280mm2
Service	H2S,NACE MR0175(>175^oF)
Working temperature	-29℃～+204℃
Connection thread	3 7/8″CAS.B×P or 3 1/2″IF.B×P