5 Inch 15000 PSI RD Circulating Valve Cased Hole Drill Stem Test Tools

Introudction of RD Circulating Valve

The rupture disk circulating valve is operated by annulus pressure, and used for drill stem testing service. the annulus pressure made RD burst and the pressure goes into RD hole and push circulating mandrel forward, then open the circulating ports.

Feature of RD Circulating Valve Structure

The RD circulating valve consist of power section and circulating section:

1. The power section composed with a power mandrel case and rupture disk and the rupture disck is available for a wide range of pressure applications , that bursts at a predetermined pressure, then allowing annulus pressure to be applied to a differential area on the power mandrel.

2. The circulating sectio is a set of ports, and the circulating ports are initially sealed by the power mandrel. When the rupture disk bursts at a predetermined pressure, the power mandrel moves down, the ports are exposed, and permit communication between the annulus and DST workstring.

Operation

Before the Rupture Disk - RD circulating valve is used, the operating pressure must be calculated for selecting the proper rupture disk pressure rating. It require information including mud weight, bottom hole temperature, testing depth and maximum annulus pressure. When the rupture disk circulating valve is run with an annulus pressure-operated valve, the safety valve operating pressure should be kept 1,000 PSI above the operating pressure of the tester valve.

Technical parameter of Retrievable Circulating Valve

Rupture Disk Circualting Valve Inner Seal Chart

Drill Stem Test Tools RD Circulating Valve , 5" Ruputure Disk Circulating Valve

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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