| 摘要 |
A connection apparatus. The apparatus comprises a wing mandrel having a first check valve disposed within an inner bore of the wing mandrel, a thread mandrel abutting the wing mandrel, with the thread mandrel having outer threads and a second check valve disposed within an inner bore of the thread mandrel. The apparatus further comprises a latch dog carrier disposed about the wing mandrel and the thread mandrel, with the latch dog carrier having a plurality of dogs, wherein the dogs having an inner portion with threads and an outer portion with outer ribs. The apparatus further contains a shell partially disposed about the latch dog carrier, with the shell having inner ribs, and wherein the inner ribs of the shell engage the outer ribs of the dogs. The apparatus further comprises a hydraulic port configured to deliver hydraulic fluid to the latch dog carrier so that the shell moves relative to the latch dog carrier in order to disconnect. A method of releasing a union is also disclosed.
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