Diyak Ltd offers a wide variety of latches for installing wireline retrievable devices in side pocket mandrels. These Latches are manufactured to meet the requirements of API 11V1. They are specifically designed to lock in place when located in either 180 degree or 360 degree latching pocket profile.
To retrieve a latch and attached flow control device, upward jarring of the tool string sheers the release shear pin permitting the locking mechanism to disengage from the latch locking profile.
180 degree latch pocket profile have a spring loaded ring style latching mechanism. A ported ID is included in some designs for applications requiring a communication path between the latch and top of the attached flow control device.
BK-2 LATCH:
The BK-2 latch is used to secure a 1″ O.D. valve or dummy in the mandrel. The latch is a spring loaded, ring style latch which locks in place when the latch reaches the recess in the mandrel receiver pocket. A pin is sheared to release the latch body (a dual pupose locking and retrieving part of the latch) allowing the ring to move upward permitting the retrieval of the valve or dummy.
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Valve Pocket ID |
Latch Model | Latch Mechanism | Running Head OD |
Fishing Neck OD |
Maximum Running |
||||
| In | mm. | In. | mm. | In. | mm. | In. | mm. | ||
| 1 | 25.4 | BK-2 | Lock Ring | 0.750 | 19.10 | 0.875 | 22.20 | 1.358 | 34.50 |
RK-2 LATCH:
The RK-2 latch is used to secure a 1.1/2″ O.D. valve or dummy in the mandrel. The latch is a spring loaded, ring style latch which locks in place when the latch reaches the recess in the mandrel receiver pocket. A pin is sheared to release the latch body (a dual pupose locking and retrieving part of the latch) allowing the ring to move upward permitting the retrieval of the valve or dummy. In addition the latch sub contains two O-rings which provide a better top seal and debris barrier.
|
Valve Pocket ID |
Latch Model | Latch Mechanism | Running Head OD |
Fishing Neck OD |
Maximum Running |
||||
| In | mm. | In. | mm. | In. | mm. | In. | mm. | ||
| 1.5 | 38.1 | RK-2 | Lock Ring | 0.936 | 23.70 | 1.186 | 30.12 | 1.78 | 45.21 |
SPECIFICATIONS:
Standard material is stainless steel, with Monel® or Inconel® optional.
Has 11/16″-16 UNS-2B threads to mate with all common 1″ gas lift valves.
Use standard top latches.