FlexPac Packer Hydraulic Hold-Down
The hydraulic hold-down complements the FlexPac retrievable packer. It prevents the string from moving uphole as a result of hydraulic forces acting below the packer during stimulation or when a firing head is being activated. The slip design is similar to that of the proven hold-down section of the PosiTrieve retrievable downhole packer.
HiPack High-Performance Testing Packer System
The HiPack high-performance testing packer system is a first-of-a-kind retrievable test system that delivers production-level isolation. The HiPack system’s built-in floating seal assembly allows it to function like a production packer, and a straight pull easily releases the packer for added flexibility.
Minimized string complexity
The HiPack packer system minimizes complexity through a simplified string design that eliminates the need for drill collars and slip joints. This simplified string design reduces the number of individual tools, connections, and dynamic seals required downhole for more efficient operations.
Better reservoir connectivity
With the HiPack system, you can select the optimal perforating gun size to achieve a better connection to your reservoir. The system also allows gauges to be positioned below the packer, putting them closer to the reservoir during testing for the highest quality pressure measurements.
Safer, lower-risk operations
The HiPack packer system is set without string rotation or mechanical movement for faster, lower-risk operations, especially in subsea environments. The system provides the option to place a below-packer circulating valve (BPCV) on the test string for a more efficient well kill, particularly important during gas well testing.
Hydraulic Jar
During drillstem tests (DSTs), if a packer or tailpipe becomes stuck, the hydraulic jar is used to provide an upward-moving shock that will help pull the string loose.
The jar consists of a housing and a mandrel that move relative to each other. An oil chamber, separated by a flow restrictor in series with a check valve, is located between the housing and mandrel.
Applying weight to the packer causes the jar to close. If the tools below the jar become stuck, an overpull is applied to the string, which causes the jar to begin metering hydraulic oil. As the oil flows slowly through the restrictor from the upper chamber into the lower chamber, elastic energy is stored in the string. The mandrel housing moves until a seal ring is uncovered, at which time the housing rapidly accelerates to produce an upward impact on the stuck tools.
After the jar has tripped, the string weight is set back down on the packer to reset the tool. Oil flows rapidly through the check valve and back into the upper chamber, allowing jarring to be repeated as necessary.
The jar consists of a housing and a mandrel that move relative to each other. An oil chamber, separated by a flow restrictor in series with a check valve, is located between the housing and mandrel.
Applying weight to the packer causes the jar to close. If the tools below the jar become stuck, an overpull is applied to the string, which causes the jar to begin metering hydraulic oil. As the oil flows slowly through the restrictor from the upper chamber into the lower chamber, elastic energy is stored in the string. The mandrel housing moves until a seal ring is uncovered, at which time the housing rapidly accelerates to produce an upward impact on the stuck tools.
After the jar has tripped, the string weight is set back down on the packer to reset the tool. Oil flows rapidly through the check valve and back into the upper chamber, allowing jarring to be repeated as necessary.
IRDV Intelligent Remote Dual Valve
The IRDV intelligent remote dual valve allows independent command of two valves in the tool string: a testing valve and a circulating valve. This single command system can operate both valves in multiple conditions and is immune to downhole pressure and temperature changes.
Reliable, independent control
The IRDV features nitrogen-free, hydrostatically powered testing and circulating valves in one tool. Low pressure pulses in the annulus enable independent operation of both valves without interfering with the operation of other tools in your test string.
Reduced operating time
The IRDV enables faster, more efficient operations by issuing direct or sequential commands that eliminate the need to use complex indexing systems. The intelligent command of the system keeps a complete record of tool operations, valuable information that can be used for post-job verification.
Flexible testing operations
Exclusive to the IRDV is a downhole redundancy option. This on-command mechanical override gives greater flexibility during reservoir testing, providing the ability to run multiple IRDVs in your tool string.
Multicycle Circulating and Reversible Valve with Lock Module
The multicycle circulating valve with lock (MCVL) module is a reclosable circulating and reversing valve.
Applying a predetermined number of pressure cycles to the tubing opens the valve. The MCVL cycles by the differential pressure between the tubing and annulus, and it is not dependent on pump rate.
The valve can be locked in the open or closed position by using the lock module. When the lock is engaged, the tool is insensitive to pressure surges in the tubing and annulus. Applying pressure to the annulus ruptures a disc and disengages the lock module.
Applying a predetermined number of pressure cycles to the tubing opens the valve. The MCVL cycles by the differential pressure between the tubing and annulus, and it is not dependent on pump rate.
The valve can be locked in the open or closed position by using the lock module. When the lock is engaged, the tool is insensitive to pressure surges in the tubing and annulus. Applying pressure to the annulus ruptures a disc and disengages the lock module.
Multiple-Opening Internally Operated Reversing Valve
The multiple-opening internally operated reversing valve (MIRV) is a tubing-pressure-operated reclosable reversing valve. An index system enables pressure testing of the tubing string while running in the hole. The MIRV is opened by applying a predetermined number of tubing pressure cycles against the tester valve. When the tool is opened, it can be used to reverse circulate, spot stimulation fluids, or change cushions.
Pumping through the circulating ports at preset pump rates between 0.3 and 1.3 m3/min [2 and 8 bbl/min] closes the tool.
The MIRV can be run in the hole open, which allows the string to fill with mud. After the packer is set, the cushion can be pumped into the string, the MIRV closed, and the test initiated.
Pumping through the circulating ports at preset pump rates between 0.3 and 1.3 m3/min [2 and 8 bbl/min] closes the tool.
The MIRV can be run in the hole open, which allows the string to fill with mud. After the packer is set, the cushion can be pumped into the string, the MIRV closed, and the test initiated.
Pipe Tester Valve
The pipe tester valve (PTV) is a modified single-ball safety valve (SBSV) with a multiflow evaluator (MFE) ball installed in place of the PCT Pressure Controlled Tester ball. This tool is used in production-type tests for running a cushion, or for pressure testing the pipe string above the valve while running in the hole.
The PTV is normally closed, but it opens permanently when annulus pressure is applied to burst the rupture disk.
When the PTV is used with the dual-ball safety valve or SBSV, one flow test and one shut-in test can be performed with a minimum number of tools.
The PTV is normally closed, but it opens permanently when annulus pressure is applied to burst the rupture disk.
When the PTV is used with the dual-ball safety valve or SBSV, one flow test and one shut-in test can be performed with a minimum number of tools.
PORT Pressure-Operated Reference Tool
The PORT Pressure Operated Reference Tool provides a reference pressure to the PCT Pressure Controlled Tester valve and also serves as a bypass when running in the hole. The PORT tool is used to trap a reference pressure within the PCT valve, eliminating the need for a high-nitrogen precharge at the surface. This trapped reference pressure provides a high-closing force for the PCT ball valve.
To operate the tool, pressure is applied to the annulus, causing the disc to rupture. When coming out of the hole, for safety, the downhole reference pressure is bled through the relief valve.
Because the PORT tool is pressure-operated, no set-down weight is required, as it is with the hydrostatic reference tool (HRT). Therefore, the string can be run in tension,greatly simplifying the string design when testing with a permanent packer. In this case, drill collars (weight) and slip joints (length compensation) can be eliminated. Length compensation is provided by the packer stinger when using a permanent packer.
To operate the tool, pressure is applied to the annulus, causing the disc to rupture. When coming out of the hole, for safety, the downhole reference pressure is bled through the relief valve.
Because the PORT tool is pressure-operated, no set-down weight is required, as it is with the hydrostatic reference tool (HRT). Therefore, the string can be run in tension,greatly simplifying the string design when testing with a permanent packer. In this case, drill collars (weight) and slip joints (length compensation) can be eliminated. Length compensation is provided by the packer stinger when using a permanent packer.
Options
The PORT tool is normally fitted with a formation protector module (FPM) kit when open perforations are present. The FPM kit prevents the annulus overpressure needed to close the PORT tool from communicating with the open formation through the bypass ports