Well Testing Operation Rupture Disc Dual Action Valve Downhole Tester Valve

In drill stem testing operation, there are different tester valves including select tester valve, LPR-N valve, tubing string tester valve and dual action valve. The dual action vlave is a full-opening and ball valve type tester valve and controlled by annular Rupture disc. The dual action valve can be used as a tester valve or a safety valve to close the well under emergency condition.

The RD-DAV can be run in hole in either the open or closed position, the tool can be operated by twice, so called as Dual action
or dual shot valve. A two-way ratchet of the dual action valve is used to prevent the operator mandrel from shifting, except in response to annulus overpressure.

The rupture disc dual action valve can be applied for many operations in high pressure high temperature oil wells and gas wells including downhole testing operation, well completion operation, reservoir testing operation, also the the dual action vlave can be used in deviated and deepwater wells.

Specification of Dual Action valve

Advantage of Techcore Oil Tools

Techcore Oil Tools expertise in manufacture of 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.

Techcore designs and chooses the raw material of DST tools according to the customers' oil well condition, and make all our effort to supply the cost effective well testing tools to satisfy the customer, and improve the test tools to meet the industry’s demand for ultra-high pressure and temperature downhole operation.

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

*Third party inspection is available from 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

Welcome to contact us for more information of the downhole tools!

ZZ Top Oil Tools Co.,Ltd as head office registered in Xi’an City in 2010, and in 2016, ZZ TOP OIL TOOLS enlarged the downhole oil tools factory under the Brand - TECHCORE in Baoji, which engages in designing and manufacturing the downhole oil tools including DST tools, Coiled tubing tools etc.

As one group, ZZ TOP provides the clients highly efficient & expertise service as well as more comprehensive products to meet the customers' requirements during the work, and insists on "Traceability, Serialization" for each tools and related parts

Equipments List

Techcore specialized in design, manufacture and sales of the oil well downhole tools as below:

* Drill stem testing tools for cased hole,  open hole and slim hole:

Retrievable packer, circulating valve,safety joint, downhole tester valve,LPR- N Valve, multi-cycle circulating valve, hydraulic jar, shock absorber, RD safety circulating valve,CHAMP packer, IPO valve, tubing string test valve, drain valve,RD sampler, super safety valve etc.

* Coiled Tubing Tools: Double slip connector, roll on connector, roll on x thread connector, double flapper check valve, motor head, dual function circulating valve, hydraulic jar, fishing tools etc.

* Perforating tools: Various perforator & perforating gun system, Shaped Charge Body

 *Oil well completion tools include: Subsurface safety valve, wireline retrievable subsurface safety valve, single string production packer, dual strings production packer, ESP packer, mechanical set packer, permanent packer, compensation device, bridge plug, sliding sleeve, nipples etc. 

DST Tools Warehouse