Techcore Oil Tools Co.,Ltd,
Professional Provider & Manufacture of DST tools, Coiled Tubing Tools & Wireline Tools
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High Pressure Drill Stem Test Tools Cased Hole Sleeve Type Drain Valve
Introudction of DST Drain Valve
The sleeve type drain valves are applied in drill stem testing operation to drain the volume fluid and release pressure when string testing finished. Before the drain valve is run in hole, the ports in the sleeve of drain valve will be sealed with two sets of O rings, and in order to keep the sliding sleeve tighten during downhole operation, the sliding sleeve and rotating nut are locked by two screws, after testing finished, the drain collar is attached, by rotating the nut to make the sliding sleeve moves up when the ports in the sleeve are aligned with the ports in the body of the tool,then the fluid may be drained.
Features and Benefits of the Retrievable Circulating Valve
* The sleeve type Drain Valve permits the pressure trapped between two closed valves t
* The drain valve is used to recover large volume fluid samples
Technical parameter of DST Drain Valve
| No | Specification | 5” |
| 1 | O.D. | 127.5mm |
| 2 | Bore Diameter | 57mm |
| 3 | Length | 1159mm |
| 4 | Working pressure | 105Mpa |
| 5 | Internal pressure strength | 152Mpa |
| 6 | External pressure strength | 140Mpa |
| 7 | Tensile strength | 1779KN |
| 8 | Torque strength | 27KN.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 |
Sleeve Type Drain Valve Inner Seal Chart
Advantage of Techcore Oil Tools
With skilled engineers, Techcore is able to design and choose the raw material of DST tools according to the customers' oil well condition, and make all our effort to supply the cost effective well testing tools to satisfy the customer.
Techcore insist on the traceability of each Drill stem testing tools and related DST parts from the
raw material to the finished products to meet on requirements of onshore and offshore standards.
Other related downhole oil tools manufactured by Techcore
* Drill stem testing tools: RTTS packer, RTTS circulating valve, RTTS 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.
* 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
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Cased Hole Drill Stem Test Tools Sleeve Type Drain Valve 5" - 15000psi