Lock Open Downhole Tester Valve / Select Tester Valve For DST Service

The Select tester valve is lock open downhole tester valve used in drill stem testing service. This kind of downhole tester valve is a full opening, annulus pressure operated tool used in cased holes testing operation. The select tester valve has the capabilities of taking multiple downhole closures where pipe manipulation is restricted and a full opening string is desired.

The downhole tester valve is composed of four basic sections; ball valve section, upper hydraulic section, nitrogen section and the metering section. The select tester valve is featured with ability to lock the ball valve in the open position at any point during the test and reactivate the tool for normal operations.

Technical parameter of Select Tester 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.