Annulus Pressure Operated Test Tools
This is a series of full-bore, annulus pressure-operated tools used in cased-hole testing, including packers, circulating valves, test valves and other auxiliary tools. The series can be used for testing, perforating + testing, and perforating + acid fracturing + testing operations.
Long Long Slip Joint
Compensates for vessel heave and thermal and pressure effects on the string
Extension Pipe
Accommodates string length changes and absorbs perforating shock
FLAPPER Pressure Test Valve
Full-bore valve for repeated pressure testing of the work string while tripping in
AP FLAPPER Pressure Test Valve
Rupture-disc operated flapper valve for repeated pressure testing while tripping in
AP Bypass Pressure Test Valve
Full-bore pressure test valve and bypass valve in one tool
APS Circulating Valve & AP Circulating Valve
Single-shot safety circulating valve for the end of a well test
HPAPS Circulating Valve & HPAP Circulating Valve
High-pressure safety circulating valves for deep wells
FLAPPER Circulating Valve
Safety valve, squeeze valve and circulating valve in one tool
Needle-type Drain Valve
Recovers the fluid sample trapped between two ball valves at surface
Sleeve-type Drain Valve
Transfers the sample trapped between two closed ball valves
SIERRA Multi Circulating Valve
Annulus pressure-operated circulating valve that opens and closes repeatedly
MAIN Test Valve
Annulus pressure-operated downhole test valve for repeated open/close
KIKO Locked-open Test Valve
Test valve that opens and closes repeatedly and locks open without holding annulus pressure
Locked-open Test Valve for Shallow Wells
Simple lock-open test valve for wells with hydrostatic pressure below 5,500 psi
Select Test Valve
Multi-cycle test valve with switchable standard and locked-open modes
AP Open-Shut Off Valve
Single open/close cycle valve with circulation after shut-in
AP Shut-Off Valve & AP Open Valve
One-time full-bore valves that together complete one open/close cycle
AP Sampler
Full-opening sampler that captures formation fluid downhole
Gauge Carrier
Carrier for downhole pressure and temperature gauges, designed to suit the gauge
HAMMER Jar
Full-bore hydraulic jar for freeing a stuck testing string
TRUST Safety Joint & Fishing Tool
Releases the string above a stuck packer and recovers the stuck part
Fishing Tool
Retrieves the stuck part below a released TRUST safety joint
TRUST Circulating Valve
Locked-open / locked-closed circulating and bypass valve for the TRUST packer
SSD Hydraulic Circulating Valve
Weight-operated bypass / circulating valve with hydraulic delay
MRO Storm Valve
Temporary well shut-in valve for storms and surface maintenance
TRUST Packer
Large-bore retrievable hookwall packer for testing, treating and squeezing
MR Packer
High-strength retrievable packer for perforating + acidizing + testing
MP Packer
Retrievable packer with built-in concentric bypass
Safety Joint Below TRUST Packer
Releases a stuck perforating gun below the packer
BSN-3 Safety Valve
Master valve that controls well flow and can cut wireline and coiled tubing
Internal Pressure Operated Circulating Valve
Full-bore circulating valve opened by internal differential pressure
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.

































