DST tools5" Hydraulic circulating Valve for cased Hole
Cased Hole Drill stem testing tools Hydrauli Circulating Valve DST
Introduction of hydraulic circulating valve
The hydraulic circulating valve serves as a bypass around the packer or as a circulating valve to circulate a well
after testing.
When run below a closed valve, the tool serves as a bypass around the packer and helps relieve pressure buildup below the closed valve when it is stung into a production packer.
When run above a closed valve, the tool can be used as a circulating valve when the workstring is picked up.
Features and Benefits
• Permits passage of wireline tools through its full-opening bore
• Requires no pipe rotation to operate
Operation
Bypass ports close when weight is set down and reopen when weight is lifted. A hydraulic metering system provides a 2 to 3-minute delay in closing after weight is applied. This delay allows either the RTTS packer to be set or the test string to be stung into a permanent packer before the bypass ports close. The ports reopen without a time delay.
During stimulation work, the latching piston adds a downward force on the circulating sleeve to help keep the
valve closed. Operation of the valve is the same whether it is used as a circulating valve or as a bypass. No torque is required. Weight is applied to close the tool, and the workstring is picked up to reopen it.
Specification:
No | Specification | 5" |
1 | O.D. | 127.5mm |
2 | Bore Diameter | 57mm |
3 | Length | 2312mm |
4 | Working pressure | 105Mpa |
5 | Internal pressure strength | 150Mpa |
6 | External pressure strength | 139Mpa |
7 | Tensile strength | 1459KN |
8 | Torque strength | 22KN.m |
9 | Service | H2S,NACE MR0175(>175oF) |
10 | Working temperature | -29oC+204oC |
11 | Connection thread | 3 7/8CAS. BXP |
Testing:
ZZ TOP OIL TOOLS is the professional manufacturer for the drill stem testing tools and surface testing equipment. All the DST tools are conformed with NACE MR 0175 with traceability,and the DST tools can be worked in H2S & CO2 above 175 F and full H2S, also with the skilled and experienced engineers, we can design the drill stem testing tools as per customer's well condition. Moreover, we supply the training in our factory and operation instruction at the well site. The DST tools are exported to USA, Colombia, India, Pakistan, Iran, Brazil etc. and enjoy the good reputation from the customers.
To shorten the delivery time, we proceeded the DST Tools in stock:
Packer,circualting valve,select tester valve,APR N-valve,OMNI valve,Hydraulic Jar,Tubing string tester
1. Full bore Packer, 7" Casing, working pressure 70Mpa, Working Temperature 400F, Connection: IF, 4set
2. Tester valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4 sets
3. Hydraulic Jar,5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets
4. Rupture disk Circulating valve, 5", Working pressure 105Mpa, Working temperature 400F, Connection CAS. BXP, 4sets
5. Flowhead (surface test tree), 3 1/16", working pressure 70 Mpa. 1set
Should you have any interest or inquiry on the Drill stem testing tools, contact us freely.
