Internal Pressure-Operated (IPO) Circulating Valve

The IPO circulating valve is the Internal Pressure Operated Circulating Valve used in open hole drill stem testing service. The IPO valve allows circulation through the work string before trip-out and serves as a drain during trip-out. It can be run in ca

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Description

Introduction of IPO Circulating valve

The IPO circulating valve is the Internal Pressure Operated Circulating Valve used in open hole drill stem testing service. The IPO valve allows circulation through the work string before trip-out and serves as a drain during trip-out. It can be run in cased holes or open holes and maintains a full bore through the tool.

Feature and benefits

* The IPO valve requires no string manipulation to operate tool.

* The IPO Valve permits passage of wire line tools through full opening bore.

The IPO circulating valve is used in the following situations:

* When a full opening string is needed.

* When redundant backup to annulus pressure operated circulating valves is needed.

* When a limited amount of annulus-pump pressure is available to operate annulus pressure tools.

Specification of IPO Circulating valve

No	Specification	5”
1	OD	127.5mm
2	ID	57.2mm
3	Length(mm)	680mm
4	Working pressure	70Mpa
5	Tensile strength(yield)	1672.9kN
6	Bursting pressure	122.7Mpa
7	Collapse pressure	129.1Mpa
8	Flow area	1200mm²
9	Service Environment	Mud, crude oil, natural gas with H2S,apply to NACE MR0175-2002
10	End connections	3 7/8 CAS. BXP, 3 1/2 IF BXP
11	Service Temperature	-20^oF~+400^oF

Appliction of IPO circulating valve

The IPO circulating valve is used in the following situations:

When a full opening string is needed.
When redundant backup to annulus pressure operated circulating valves is needed.
When a limited amount of annulus-pump pressure is available to operate annulus pressure tools.