105 Mpa Single Cycle Select Tester Valve End Of Drill Stem Test Operations
Well Testing Pump thru Rupture Disc Safety circulating Valve

Overview of Single Cycle Safety Circulating Valve

The Single Cycle Safety Circulating Valve is used as both safety valve and circulating valve in cased hole drill stem testing operation. The single cycle safety circulating valve is the pump thru RD circulating valve, which is operated by increasing the applied annulus pressure so that the annulus pressure at the tool reaches a predetermined value at which point the RD will burst.

Features fo the Single Cycle Safety Circulating Valve

* If remove the valve mechanism, the single cycle safety circulating valve can be converted into a
circulating valve only. And if remove the circulating ports, it will make the tool as the Pump Thru RD
safety valve.
* The Rupture Disc isolates the total annulus pressure from the air chamber in the power section of single
cycle safety circulating valve.
* Rupture Discs are available for a wide range of pressure and temperature applications.

Rupture Disc of single cycle safety circulating valve

The operation pressure of the rupture disc must be confirmed before the single cycle safety circulating valve is run in hole. And the proper Rupture Disc will be selected with the necessary pressure rating . According to the confirmed pressure, which is determined as per the data of mud weight, true vertical depth of the valve, bottomhole temperature, and maximum allowable annulus pressure.


Specification of Pump Thru RD safety circulating valve

Well Testing Pump Thru Rupture Disc Safety Circulating Valve 5" x 15000psi


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.

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