Marine production riser and method for installing same

摘要

A riser connector system for securing a marine riser to a marine bottom. The system is comprised of a landing base which is preset on the marine bottom and a connector means which is connected to the lower end of the core of the riser. The landing base has an inverted 45 DEG cone-shaped cover plate which overlies and protects connector heads on the base. The cover plate has openings therethrough in vertical alignment with the connector heads which are normally closed by spring-biased doors to prevent trash from accumulating in the heads. The connector means has an inverted cone-shaped funnel which is adapted to cooperate with the cover plate when assembled and has flowline guidelines therethrough vertically aligned with the openings in the cover plate. A target on the underside of the connector means is viewed by a TV camera positioned on the base to orient the riser during assembly.