The Rupture Disc Circulating valve is the same as RD Safety circulating valve except short of ball valve section, the annulus pressure made RD burst and the pressure goes into RD hole and push circulating mandrel forward, then open the circulating ports.
1. The power section consists of a power mandrel case and rupture disk that is available for a wide range of pressure applications. The rupture disk bursts at a predetermined pressure, allowing annulus pressure to be applied to a differential area on the power mandrel. The power mandrel moves down, first pushing the ball valve closed, and then opening a set of circulating ports.
2. The circulating section consists of a set of ports that are initially sealed by the power mandrel. When the rupture disk bursts, the power mandrel moves down, exposing the ports that allow communication between the annulus and workstring.
Specification of Full Bore Retrievable Packer / RTTS Packer in 7inch
| No | Specification | 5” RD Circulating valve |
| 1 | O.D. | 127.5mm |
| 2 | Bore Diameter | 57mm |
| 3 | Length | 1220mm |
| 4 | Working pressure | 105Mpa |
| 5 | Internal pressure strength | 139Mpa |
| 6 | External pressure strength | 120Mpa |
| 7 | Tensile strength | 2139KN |
| 8 | Torque strength | 61KN.m |
| 9 | Service | H2S,NACE MR0175(>175oF) |
| 10 | Working temperature | -29oC+204oC |
| 11 | Connection thread | 3 7/8CAS. BXP or 3 1/2 IF.BXP |
About ZZ TOP OIL TOOLS
Xi’an 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 OIL TOOLS, which engages in designing and manufacturing the downhole oil tools including DST tools, Coiled tubing tools etc.
We provide 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
Drill stem testing tools for cased hole, open hole and slim hole:
* Full bore retrievable packer: RTTS packer, mechanical setting retrievable packer, Double grip mechanical setting retrievable packer, Single grip mechanical setting retrevable packer, CHAMP packer, High pressure retrievable packer, high pressure retrievable packer with bypass
* Downhole Tester Valve: Select tester valve, LPR N Tester valve, tubing string test valve
* Circulating valve: full bore retrievable circulating valve, multi-cycle circulating valve, omni valve, RD safety circulating valve, IPO valve, RTTS Circulaitng valve, Hydraulic circulating valve
* Shock Absorber: Vertical shock absorber, Radial shock absorber
* Safety valve: RTTS safety valve, Super Safety valve, BOP safety valve
