Drill Stem Testing Hydraulic Circulating Valve 5" x 15000 psi

The Hydraulic Circulating Valve is the part of drill stem testing string, it serves as a bypass around the packer or as a circulating valve to circulate a well after testing.The Hydraulic circulating valve’s delay function carried out by special hydraulic oil flow over the metering
system, when push top coupling moves forward, the mandrel string and metering system also move forward(Oil chamber divide into 2 parts by metering sleeve), when the fluid in below part flow to top part caused by pressure added, the circulating ports will be closed because of delay function of metering sleeve(The flow rate depend on weight set down, the more weight set, the more flow rate, and the shorter time delay).

Technical parameter of Hydraulic Circulating Valve

Advantage of Techcore Oil Tools

Techcore Oil Tools has the professional Reserch and Development (R&D) department to improve the advanced technology in design of the Drill stem testing tools for well testing service. With more than Ten years development, our team is strong enough to design and choose the raw material of DST tools according to the customers' oil well condition. We always make all our effort to supply the cost effective well testing tools to satisfy the customer.

* 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.