Techcore Oil Tools Co.,Ltd,
Professional Provider & Manufacture of DST tools, Coiled Tubing Tools & Wireline Tools
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7" RTTS Circulating Valve Full Bore Retrievable Circulating Valve
The RTTS Circulating Valve is a Full Bore Retrievable Circulating Valve in Halliburton type. The RTTS circulating valve is applied for drill stem testing string with RTTS packer and the RTTS circulating valve can be locked closed when the packer is unset to reverse fluid around the bottom of the packer. The full bore design of the RTTS circulating valve allows tubing-type guns and other wire line equipment to pass.
Operation of RTTS Circulating Valve
When the RTTS Circulating Valve is placed in the hole, the valve must be in the locked open position. The J-slot in the packer-body drag block (or drag sleeve) must also be placed in the unset position.When the circulating valve is opened to come out of the hole, the tubing is lowered, turned to the right, and picked up. The operating principle of RTTS Circulating Valve is based on lug movements in a J-slot. The lugs move with workstring manipulation. When the lug is in the upper position, the circulating valve is open; when the lug is in the lower position, the circulating valve is closed.
Specification of RTTS circulating valve
| P/N:108125667-007-75/8”RTTS Circulating Valve | |
| Nominal Size | 7"-75/8” |
| IDm in. | 2.375"(60mm) |
| Make-Up Length | 35.27"(895.9mm) |
| Flow Area | 1700mm2 |
| Rated Working Pressure | 70Mpa(10000psi) |
| Working Temperature | -20°C~204C |
| Service | H2SNACEMR 0175(Above 175F) |
| Connection Thread | 31/2"IF Box-Pin |
* The RTTS Circulating Valve is interchangeable with Halliburton Type
﹡HSE﹡Safety Testing instructions of RTTS Circulating valve
1. When running each pressure test, you must increase pressure gradually. When the pressure is up to 20MPa, hold on for one minute, then every 10MPa keep it for one minute until the rating pressure;
2. During doing the pressure test, the tool should be placed in the test pit and cover the protecting board on the pressure test plug.
3.During the whole process, make sure the entire test operator keep away from plug and joint which may lapse.
4.Test area should set isolation, others except operator not allowed to enter test area.
5.If there is anybody in the test area, it should set isolation, avoiding test production fly off the test area.
* Drill stem testing tools are available for cased hole, open hole and slim hole including:
Full bore retrievable packer, full bore retrievable circulating valve, full bore retrievable safety joint, downhole tester valve, select tester valve, LPR- N Valve, omni valve, multi-cycle circulating valve, hydraulic jar, vertical shock absorber, radial shock absorber, RD safety circulating valve, high pressure retrievable packer with bypass, CHAMP packer, IPO valve, tubing string test valve, sleeve type drain valve, rupture disk sampler, super safety valve with control panel, BOP safety valve for downhole operation and so on.