Inventors:
William W. Pecue - Baton Rouge LA
Assignee:
Texaco Inc. - White Plains NY
International Classification:
E21B 4702
Abstract:
The angular misalignment of a wellhead is determined by lowering onto the wellhead an assembly having centering means depending from a base plate and level indicator means fixed on top of the plate. The assembly is suspended from the end of a drillstring which carries a level monitoring means.