Techcore Oil Tools Co.,Ltd,
                                                                                                           
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Machinery Energy & Mineral Equipment Oil Field Equipment Packer
China 3 7/8

3 7/8" Hollow Plug Impact Reversing Sub for Open Hole DST Operations - 10,000 PSI Working Pressure

Price Negotiable
Price: Negotiable
MOQ: 1 set
Delivery Time: 30 DAYS
Brand: TECHCORE
Product Description
Hollow Plug Impact Reversing Sub for Open Hole DST Operations
The Hollow Plug Impact Reversing Sub is engineered for open hole drill stem testing operations, serving as a reliable circulating valve within the DST working string. This specialized tool operates through internal pressure to shear pins and open circulating ports when fluid circulation is required.
Product Specifications
Parameter Value
Outer Diameter 3 7/8 inches
Inner Diameter 1.75 inches
Tool Joint Threads EUE box to pin, IF box to pin
Length 14.57 inches
Working Pressure 10,000 psi
Working Medium Mud, crude oil, natural gas with H2S (NACE MR0175-2002 compliant)
Design and Construction
This reversing sub features a robust construction comprising valve body, shear pin plate seat, shear pin plate, shear pins, and sealing rings. The shear pin plate seat connects to the valve body via threaded connection, while the shear pin plate is secured within the seat using shear pins. This design ensures simple maintenance and reliable operation.
Quality Assurance Testing
Internal Pressure Sealing Test
Comprehensive pressure testing includes clamping the valve body, installing test pistons, and connecting pressure test pipelines. The tool undergoes 15-minute pressure holds with zero leakage requirements.
Shear Pin Cutting Test
Rigorous testing verifies shear pin functionality using specialized casing configurations to ensure reliable performance under operational conditions.
Hollow Plug Impact Reversing Sub oilfield tool component
Manufacturing Excellence
Techcore Oil Tools brings over a decade of specialized experience in drill stem testing tool design and manufacturing. Our commitment to quality includes:
• Superior quality materials and construction
• Third-party inspection certification (SGS, BV, DNV)
• Comprehensive 12-month product guarantee
• Full traceability from raw materials to finished products
• Compliance with onshore and offshore industry standards
• Thoughtful after-sales service and technical support
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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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