Guidelineless subsea wellhead entry/reentry system

Details Guidelineless subsea wellhead entry/reentry system Guidelineless subsea wellhead entry/reentry system

1977-12-02

1979-09-11

Purser, Ernest R.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

175 7, 166337, E21B 712

Patent

active

041672151

ABSTRACT:
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.

REFERENCES:
patent: 3177954 (1965-04-01), Rand
patent: 3179176 (1965-04-01), Goepfert
patent: 3189105 (1965-06-01), Bates et al.
patent: 3199613 (1965-08-01), Malott et al.
patent: 3500906 (1970-03-01), Petersen
patent: 3545539 (1970-12-01), Manning
patent: 3741296 (1973-06-01), Murman et al.
patent: 3788396 (1974-01-01), Shatto et al.
patent: 4031544 (1977-06-01), Lapetina

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