Downhole Solutions
WellCore Equipment supplies DST and completion equipment for cased-hole and open-hole wells.
9 families of test tools, one supplier
Every tool in the string above comes from our 2026 catalog: annulus pressure operated, ball-throw and mechanically operated test tools in sizes from 3⅛ in and pressure ratings up to 15,000 psi, with sour-service options.
Slip Joints
Expansion joints that take up heave, thermal growth and pressure effects on the string so the packer stays put.
Circulating and Reversing Valves
Single-shot and multicycle valves for circulating, reversing out and spotting fluids at any point of the test.
Downhole Tester Valves
Ball and flapper tester valves for flow and build-up periods, operated by annulus pressure, internal pressure or pipe movement.
Downhole Safety Valves
Valves that isolate the formation at the end of the test or in an emergency, including storm valves for floating operations.
Hydraulic Jars
Hydraulic jars that deliver upward and bidirectional impact to shake a stuck test string loose.
Safety Joints
Safety joints, releasing devices and fishing tools for fast disconnection and recovery of the string.
Packers
Retrievable cased-hole and open-hole packers, straddle packers and anchors built for high differential pressure.
Pressure Test and Fill-Up Valves
Flapper and bypass valves for filling and pressure-testing the string on the way into the hole.
Auxiliary Tools
Gauge carriers, samplers, drain valves, shock absorbers and other components that complete the test string.
Planning a well test or restocking your DST fleet?
Tell us the casing size, pressure rating and service conditions. We will come back with a configured string and a quotation.