How many positions does the ODIN choke valve have? (# Open, # Closed, # Intermediate)
8 total. 1 closed, 1 open, 6 intermediate.
Name the 4 different types of ODIN valves
AP (Annular Production), AI (Annular Injection), LP (In-Line Production), LI (In-Line Injection)
Name the 3 thread sizes ODIN valves come in
3.5, 4.5, 5.5
Why must hydraulic fluid be checked for debris during ODIN FAT?
The collet is moved into a number of grooves during piston/indexer actuation. The collet then holds the piston/indexer in place once hydraulic fluid has been bled off. Hydraulic fluid must be checked to ensure no damage to collet lips
TRUE or FALSE. The ODIN valve is held in place via a nitrogen control line?
FALSE. The ODIN valve is held in place by the collet. No pressure once set
Name the 6 major housing components of the ODIN valve
Name the components within the Lower Seal Housing for the ODIN valve
Lower seal stack, lower piston
Name the components within the Choke Housing for the ODIN valve
Choke, lower piston
Name the components within the Lower Nipple for the ODIN valve
Protector sleeve, spring
Describe the mechanism of the ODIN valve when hydraulic fluid is fed in.
Hydraulic fluid is fed into the OPEN port and provides a pushing force which shifts the piston, choke and collet upwards, precisely located by the indexer. This reveals openings in the choke which increases the flow rate. A protector sleeve is pushed by the spring over the lower seals to protect them from flow.
Describe the mechanism of the ODIN valve when hydraulic fluid is bled out.
Hydraulic fluid is removed from the OPEN port and transferred to the CLOSED port which shifts the piston, choke and collet downwards. This closes the openings revealed on the choke and reduces the flow rate of the valve.
What does TRFC-HN mean, and how many different types are there?
Tubing Retrievable Flow Control - Hydraulic Nitrogen.
4 types: AP, AIS, LP, LI
What is the difference between Annular FCV and In-Line FCV?
Annular control flow from the completion zone. InLine act as a flow bypass within the tubing string.
Describe mechanism of the TRFC valve when hydraulic fluid is fed in.
Hydraulic fluid enters the hydraulic chamber. This forces the piston and choke upwards, and is precisely located by the indexer. Openings in the choke are revealed through the choke housing allowing an increased amount of flow.
Describe mechanism of the TRFC valve when hydraulic fluid is bled out.
Hydraulic fluid is removed from the hydraulic chamber. The force of the nitrogen "spring" counteracts the force generated by the hydraulic fluid, moving the piston and choke downwards (precisely located by the indexer). Openings in the choke are then hidden by the choke housing reducing flow rate.
Name the 7 major sub-assemblies of the TRFC valve
1. Upper Nipple
2. Nitrogen Coil Assembly
3. Piston Housing
4. Indexer Housing
5. Hydraulic Chamber Housing
6. Choke Housing
7. Lower Nipple
Name the 3 major body parts for a safety valve
1. Hydraulic Chamber Housing (HCH)
2. Spring Housing
3. Lower Nipple
Name 6 critical components within the Safety Valve Spring Housing
1. Piston Rod
2. Power Spring
3. Flow Tube
4. Soft Seat
5. Hard Seat
6. Flapper
Describe the Safety Valve opening sequence
1. Hydraulic fluid enters the chamber applying pressure force to the piston rod.
2. The force from the piston rod overcomes the force of the power spring which moves the flow tube.
3. The flow tube pushes against the flapper, opening the valve.
Name the 3 major body parts of an FIV
1. Trip Saver
2. Collet Section
3. Ball Section
Name the 2 ways to actuate an FIV
1. Shifting Tool
2. Trip Saver
Name the 6 main components within the Trip Saver and their functions
1. Top Sub (connects to completion string)
2. Nitrogen Housing (connects to top sub, isolates nitrogen chamber from annulus)
3. Nitrogen Mandrel (connects to cycle mandrel inside housing and acts as a piston to actuate cycle mandrel)
4. Shear Sleeve (attaches to nitrogen mandrel and allows shop to test without going to long slot)
5. Cycle Mandrel (attaches to nitrogen mandrel. Moves up and down during tubing pressure up/bleed down)
6. Spline Sleeve
How does the shifting tool work in an FIV
The collets of the shifting tool latch onto the collets in the FIV. The collets shift up/down. This movement causes the ball to rotate closed/open.