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O Series Orifice Valves |
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O Series valves are designed for circulating operations and
provide means for communication between the tubing and the tubing/casing annulus.
BENEFITS OF DESIGN PRINCIPLE
Cv values for each orifice size are determined with ISA procedures
to provide accurate sizing for proper injection rates.
Efficiency of back check valve provides large flow capacities.
Positive sealing feature of back check valve provides protection
from intrusion of production fluids into casing annulus.
Various orifice materials (SS, monel, inconel, tungsten carbide)
available to meet application requirements.
OPERATING PRINCIPLE
This valve series design utilizes an orifice (choke) as well as a back
check valve for continuous flow operations. Injection fluid or gas enters
through the entry ports and through an orifice. Injection pressure
moves the back check valve off seat allowing gas or fluids to enter into
the tubing. Reverse flow pushes the check valve on seat to prevent
flow into the casing.
For injection of fluids or gas from the tubing to the tubing/casing
annulus, the design can be modified by replacing the upper packing
elements with a spacer. This allows the flow to enter from the top,
passing through the valve via the back check and out the bottom of the
valve and into the tubing/casing annulus. With this configuration, the
valve is installed in a mandrel with a type S pocket which has no ports
between the seal bore and vents to the casing/tubing annulus.
Orifice sizes available for this valve design range from 1/8 through 7/16
inch in the 1 inch. size and from 1/8 through 51/64 inch in the 1-1/2 inch
size, thus making them suitable for a wide range of operating
conditions.
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| O Series Orifice Valves |
| Type |
Assy. No. |
Nominal OD (inch) |
Packing OD (inch) |
Port Size (inch) |
Latch Or End Conn. |
Running Tool Type |
Pulling Tool Type |
Mandrel Type |
| Upper |
Lower |
Min. |
Max. |
| OM 14R |
150-40 |
1 |
1-1/32 |
1-1/32 |
1/8 |
7/16 |
BK-2, M |
MR |
MP |
TMP |
| OM 20R |
150-27 |
1 |
1-1/32 |
1-1/32 |
1/8 |
7/16 |
BK-2, M |
MR |
MP |
TMP |
| O20R |
150-12 |
1-1/2 |
1-9/16 |
1-1/2 |
1/8 |
51/64 |
TG, RK, RM T-2 |
RTG, TER |
PTG, TRP |
TP |
| OSM-14R |
150-05 |
1 |
1-1/32 |
1-1/32 |
1/8 |
7/16 |
BKP |
MR |
MP |
TMP |
| OS 14R |
150-08 |
1-1/2 |
1-9/16 |
1-1/2 |
1/8 |
51/64 |
TFA, PKP |
RTG, TER |
PTG, TRP |
TP |
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