Recloseable Circulating Valve For Drill Stem Testing Service

The Recloseable Circulating Sleeves are assembled as part of tubing string to establish communication between the tubing string and the casing annulus for single or multiple-tubing string completions.

The Reclosable Circulating sleeves are annulus pressure operated without use of a wireline or coiled tubing tools, features an internal sliding sleeve which seals against the circulating ports. The sleeve is held in place with numbers of shear pins, by applying a predetermined pressure to the annulus, the shear pin shear, the differential pressure is utilized to shift the sleeve and open the circulation ports, meanwhile a spring equipped will be compressed prepare to close the circulating sleeve once the annulus pressure released by spring force.

Technical parameter of Recloseable Circulating Valve

ZZ TOP Oil Tools Co., Ltd located in XI’AN City in China, we are in full service on design, production and supply of oilfield downhole tools and Wellhead Equipment.

Over more than 10 years, we become a fast growing organization, now our two sub-factories, equipped with CNC lathes, Miller, deep-hole drilling &boring machine and other advanced machines, have enough production capacity to meet the customers’ requirement. And we build a professional & strong team including technical, sales, logistic and leading management department, which make our company success of manufacturing and providing cost-effective downhole tools and create added value for customers around the world.

Now our tools are supplied to worldwide and enjoy the good reputation.We always focus on providing the our clients with highly efficient & expertized service and approach each enquiry with meticulous attention to technical specifications and insist on “Traceability, Serialization” for each tools. We will keep innovating and providing more durable products and reliable service for worldwide customers.