Guidelineless subsea wellhead entry/reentry system
A guidelineless subsea wellhead system includes TV/sonar guidance components which direct operating and/or service equipment into a position adjacent a subsea wellhead. An offset funnel mounted on the wellhead is used to guide a probe, which is mounted on a riser, into alignment with the wellhead. The probe is used to guide the riser and the service equipment into exact alignment with the wellhead so that tasks such as well entry, tree installation, well reentry, tree cap removal, tree cap replacement and downhole wireline operations can be completed without any cable guidelines. The system can also be used with the usual guidelines to increase the speed and accuracy of connecting to the wellhead.
- Assignee:
- FMC Corporation
- Patent Number(s):
- US 4167215
- OSTI ID:
- 5698477
- Country of Publication:
- United States
- Language:
- English
Similar Records
New concept in subsea completions: diverless flowline connection; single-trip, guidelineless workover
TV is established method for guidelineless reentry of ocean-floor wellbore