Techcore Oil Tools Co.,Ltd,
Professional Provider & Manufacture of DST tools, Coiled Tubing Tools & Wireline Tools
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DST Tools Dual Action Ball Valve For Oil Well Donwhole Testing
The Dual Action Ball Valve is the part of DST tool string, the dual action ball valve is controlled by the annular Rupture disc,also called rupture disc dual action valve or RD DAV. The dual action ball valve can be used as a tester valve or a safety valve to close the well under emergency condition.
The rupture disc dual action ball valve can be run in cased hole in either the open position or closed position, the ball valve can be operated by twice, so called as Dual action or dual shot valve. In the single cycle configuration, the RD-DAV can be used as a tubing string pressure test valve, or as a safety shut in valve in wells where a secondary downhole barrier is required.
Technical parameter of Dual Action Ball Valve
| Specification | 5” |
| OD | 127.5mm |
| ID | 57mm |
| Length | 6555mm |
| Working pressure | 105Mpa |
| Ball valve Open Differential pressure | 35Mpa |
| Ball valve top and bottom differential pressure | 70Mpa |
| Internal Pressure strength | 146Mpa |
| External pressure strength | 136Mpa |
| Tensile strength | 2034KN |
| Torque strength | 31.6KN.m |
| Circulating Flow area | 2280mm2 |
| Service | H2S,NACE MR0175(>175oF) |
| Working temperature | -29℃～+204℃ |
| Connection thread | 3 7/8″CAS.B×P or 3 1/2″IF.B×P |
* Drill stem testing tools are available for cased hole, open hole and slim hole including:
| Name | Size | Specification | Well type |
| RTTS Packer | 4 1/2”-20” Casing | 70Mpa, 400F | cased hole |
| Full bore mechanical setting packer | 5"-18 3/8" Casing | 70Mpa / 105 Mpa, 400F | cased hole |
| CHAMP IV Packer | 7”-13 3/8” Casing | 70Mpa,400F | cased hole |
| Champ XHP Packer | 7”-13 3/8” Casing | 105Mpa, 400F | cased hole |
| RTTS Circulating Valve | 4 1/2”-20” Casing | 70Mpa, 400F | cased hole |
| IPO Circulating Valve | 5” OD | 105Mpa 400F | Open hole , cased hole |
| Hydraulic Circulating Valve | 3 7/8” and 5” OD | 105Mpa 400F | Slim hole , cased hole |
| RD Safety Circulating Valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| RD Circulating Valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| OMNI Circulating Valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| RTTS Safety Joint | 4 1/2”-20” Casing | 105Mpa, 400F | cased hole |
| Safty joint | 4 1/2"-20" | 105Mpa, 400 F | open hole |
| Round mandrel slip joint | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| Tubing string Tester valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| RD Sampler | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| Drain valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| LPR-N Valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| Select tester valve | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| Hydraulic Jar | 3 7/8” and 5” OD | 105Mpa, 400F | Slim hole , cased hole |
| Gauge Carrier | Design as per Gauges | 105Mpa, 400F | Slim hole , cased hole, open hole |
| Radial shock absorber | 7”Casing | 105Mpa, 400F | cased hole |
| Vertical Shock Absorber | 5” OD | 105Mpa, 400F | cased hole |
| Super Safety Valve / BOP safety valve | 8” OD | 105Mpa, 400F | cased hole |