Cased Hole Drill Stem Test Tools DST IPO Circulating Valve

Cased Hole Internal Pressure operated Circulating Valve / DST IPO Circulating Valve

The IPO circulating valve is the Internal Pressure operated circulating valve, the tool 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.

The IPO circulating valve is used in the below 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.

Operation of IPO Circulating Valve

The IPO circulating valve is operated by internal pressure(500-10000psi above hydrostatic).Pressure required to operate the tool is determined by shear pins, which hold the sliding valve in the closed position. To open the valve, tubing pressure is increased to a pressure above annulus hydrostatic equal to the shear value of the shear pins. Once operated, the IPO Circulating valve locks open.

 
Specification of IPO Circulating valve

When new tools are bought from the warehouse stock, the following will occur:

• Assign a unique serial number to each new tool.
• A quality file for the particular tool will be started. Where required, customs will be informed of this part number.
• Disassemble and inspect the tool. Record all trace number in the quality file.
• Follow the standard maintenance procedures for that particular tool type as specified in the Cased hole maintenance manual or tool specific manual. In the event that this is a new tool with no standard procedure, contact Technology and have the shop supervisor or other authorized personnel direct the maintenance procedures

About ZZ TOP Oil Tools

ZZ TOP Oil Tools Co., Ltd, headquartered in Xi’an City, focused on the design and production of drill stem testing tools and wellhead equipment since 2010. With the business expanding, ZZ TOP Oil Tools jointed to build the factories for wellhead equipment under the brand " JC Wellhead" and downhole tools under the brand "Techcore".

* "JC Wellhead" was estabilished in 2010 in Yancheng city, specialized in design and manufacturing of the oilfield wellhead equipment conformed with API 6A specification.

* "Techcore Oil Tools" was re-built in 2016 in Baoji city, specialized in design and manufacturing of drill stem testing tools, coiled tubing tools, wireline tools and other downhole tools.

Welcome to contact us for more information about our tools and service!