5 Inch Drill Stem Testing Gas Well Downhole Valve

Gas Well Downhole Tester Valve High Pressure APR Tools For Drill Stem Testing

The donwnhole tester valve is used to drill stem testing operation in oil and gas well. The downhole tester valve we manufactured is the Halliburton select tester valve, which is a full opening, annulus pressure operated high pressure tester valves.

Structure of the Downhole Tester Valve

The select tester valve is composed of four basic sections; ball valve section, upper hydraulic section, nitrogen section and the metering section.

* The ball valve section contains the ball valve and the mechanism that rotates the ball when the tool is activated; the ball is rotated to the open position allowing the reservoir to flow into the testing string.

* The upper hydraulic section is contained between the upper annulus ports and the nitrogen filler valve. The critical part of this section is the metering (power) cartridge and selector.

* The metering section is the metering cartridge that provides the area that the operating pressure acts over to open the valve. The metering cartridge has two parallel flow paths through it, Each path only allows fluid to move in a single direction.

* The nitrogen section is composed of the nitrogen case, nitrogen mandrel, floating piston and nitrogen filler valve. The nitrogen acts as an adjustable spring and provides the force needed to close the ball valve. The nitrogen section is charged at the surface to a predetermined pressure according to surface temperature, bottom hole temperature and hydrostatic pressure. These values do not have to be exact because the floating piston allows the tool to compensate for small inaccuracies (approximately 10%).

Specification of Downhole tester valve

Drill stem testing tools for cased hole, open hole and slim hole are available as below

RTTS Serires: Full bore retrievable packer, full bore retrievable circulating valve, full bore retrievable safety joint,

Tester Valve: downhole tester valve, select tester valve, LPR- N Valve, Tubing String Tester Valve

Circulating valve: omni circulating valve, multi-cycle circulating valve, RD Circulating valve, RD safety Circulating Valve, Hydraulic Circulating Valve

Other DST string tools: hydraulic jar, vertical shock absorber, radial shock absorber, RD safety circulating valve, high pressure retrievable packer with bypass, CHAMP packer, IPO valve, sleeve type drain valve, rupture disk sampler, super safety valve with control panel, BOP safety valve for downhole operation and so on.

Techcore Service

Strict quality control system

Techcore oil tools is certified by ISO, all the manufacture is strictly conformed with ISO system including Quality Control Management, Environmental Management and Occupational Health & Safety Management. For each downhole tools and each parts, we make the trace-ability from the raw material till the products. And any TPI inspection are available with us from SGS/BV/ TUV /DNV etc..

Continuous after sales service

Techcore provides the prompt after-sales service to our customers to guarantee your benefits. For the complete downhole tools, we provide the free training in our factory, and if you need the site instruction, we can appoint our technical engineer to your site for the training.

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.

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