Cased Hole Drill Stem Downhole Valve High Pressure Tester Valve AISI Alloy Steel

Brief of LPR-N Valve

The LPR - N Valve is the tester valve with a full bore feature, the LPR -N valve is annulus pressure-operated valve. The LPR-N Valve is used in cased holes to measure multiple closed-in pressures where pipe manipulation is restricted and a full-opening string is required. The nitrogen chamber of the LPR-N valve is charged at the surface to a selected pressure determined by surface temperature,bottomhole temperature, and bottomhole pressure. It is served as the master tester valve in drill stem testing operation.

Structure of the LPR-N Valve

Tester valve consists of Ball valve section, Power section and Metering Section.

* Ball valve section

The ball valve section contains the ball valve and related mechanical components that rotate the ball.
When the tool is activated, the ball is rotated to the open position, allowing the reservoir to flow into the
test string

* Power/nitrogen section

The power/nitrogen section contains the shear pins, operating piston, and nitrogen chamber. In the power
section, one side of the piston is exposed to annulus pressure, and the other is exposed to pressurized
nitrogen, which acts as a large gaseous spring.

* Metering section

The metering section of the LPR- N Valve is isolated from the annulus fluid by an oil and floating piston barrier to control the rate of pressure change.

Specification of LPR-N Valve

About Techcore Oil Tools

Techcore Oil Tools has the professional Reserch and Development (R&D) department with skilled engineers whom were committed to the design of downhole tools for more than ten years and Techcore is equiped with advance equipments to manufacture the oil downhole tools and its related parts in high quality.

The drill stem testing tools are applied in cased hole, open hole and slim hole, the main DST tool string includes RTTS packer, circulating valve, safety joint, select tester valve, omni valve, hydraulic jar, shock absorber, RD safety circulating valve, high pressure retrievable packer with bypass, IPO valve, tubing string test valve, and so on.

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

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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