Hollow Plug Impact Reversing Sub Open Hole DST 3 7 / 8" For Oilfield

High Pressure Drill Stem Testing

Introduction of Hollow Plug Impact Reversing Sub

The Hollow Plug Impact Reversing Sub is applied for the open hole drill stem testing operation, the reversing sub is served as a circulating valve in the DST working string. The Hollow Plug Impact Reversing Sub is operated by inner pressure to cut off the shear pins, and then open the circulating port on it, when

circulating work is needed.

Constructure of Hollow Plug Impact Reversing Sub

The hollow plug impact reversing sub is composed of valve body, shear pin plate seat, shear pin plate, shear pins and sealing rings. The shear pin plate seat is connected to the valve body through connecting thread and the shear pin plate is restricted in the shear pin plate seat through shear pins. It has simple construction and convenient maintenance.

Specification of Open hole 3 7/8" Hollow Plug Impact Reversing Sub

Test required to check the hollow plug impact reversing sub

* Internal Pressure sealing test:

Clamp Valve body, Install test piston . Connect pressure test pipeline, sensor and pressure test pump to pressure test sub. Then install the pressure test sub to the both ends of the tool and put it into the pressure test groove.Hold the pressure for 15 minutes with no leakage.

Shear Pin Cutting off test

* Install the shear pin plate seat, shear pin plate and shear pins, with the OD of shear pin in the short casing of 6 5/8” RTTS Packer. Then put the tool into the pressure test groove.

Advantage of the Techcore Oil Tools

Techcore Oil Tools is professional in designing and manufacturing the Drill Stem Testing Tools for more than Ten years, the professional Reserch and Development (R&D) department improves the advanced technology in design of the Drill stem testing tools for well testing service to meet different requirement of Oil Well testing.

* Techcore insist on superior quality, strong packing & timely delivery.

* Techcore supply the Third party inspection including SGS, BV, DNV etc.

* Techcore do the best to supply thoughtful and prompt after-sales service to guarantee for the

customers' benefits

* Techcore supply the cost effect products with 12 months guarantee

* Techcore insist on the traceability of each Drill stem testing tools and related DST parts from the

raw material to the finished products to meet on requirements of onshore and offshore standards.

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