Techcore Oil Tools Co.,Ltd,
                                                                                                           
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5" Cased Hole DST IPO Circulating Valve - 70 MPa Working Pressure, 127.5 mm OD for Oilfield Operations

Price Negotiable
Price: Negotiable
MOQ: 1 set
Delivery Time: 30 DAYS
Brand: TECHCORE
Product Description
Cased Hole DST IPO Circulating Valve
The Internal Pressure Operated (IPO) circulating valve enables circulation through the work string before trip-out and serves as a drain during trip-out operations. This full-bore tool can be deployed in both cased holes and open holes.
Key Applications
  • When a full opening string is required
  • As redundant backup to annulus pressure operated circulating valves
  • When limited annulus-pump pressure is available for operating annulus pressure tools
Operation Principle
The IPO circulating valve operates through internal pressure application (500-10,000 psi above hydrostatic). Operation pressure is determined by shear pins that maintain the sliding valve in closed position. To activate the valve, tubing pressure is increased above annulus hydrostatic to match the shear value of the pins. Once operated, the valve locks in open position.
Technical Specifications - 5\" Model
Specification Value
Outside Diameter (OD) 127.5 mm
Inside Diameter (ID) 57.2 mm
Length 680 mm
Working Pressure 70 MPa
Tensile Strength (Yield) 1672.9 kN
Bursting Pressure 122.7 MPa
Collapse Pressure 129.1 MPa
Torque Strength 37.3 kN·m
Flow Area 1200 mm²
Service Environment Mud, crude oil, natural gas with H2S, compliant with NACE MR0175-2002
End Connections 3 7/8 CAS. BXP, 3 1/2 IF BXP
Service Temperature -20°F to +400°F
Cased Hole DST IPO Circulating Valve industrial equipment showing detailed mechanical components and connections
Quality Assurance Process
  • Unique serial number assignment for each new tool
  • Comprehensive quality file initiation with customs notification where required
  • Complete disassembly and inspection with trace number documentation
  • Standard maintenance procedures following Cased Hole maintenance manual specifications
Manufacturer Profile
ZZ TOP Oil Tools Co., Ltd, headquartered in Xi'an City, specializes in drill stem testing tools and wellhead equipment design and manufacturing since 2010. The company operates under two specialized brands: "JC Wellhead" for API 6A compliant oilfield wellhead equipment and "Techcore Oil Tools" for drill stem testing tools, coiled tubing tools, wireline tools, and other downhole equipment.

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Company Techcore Oil Tools Co.,Ltd,
Location No.25th Gaoxin6th Road, Xi'an, China
Contact Person LEE

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