scope:

The purpose of this interim recommended practice is to present an interim approach to siting Jackup Mobile Offshore Drilling Units (MODUs) and to recommend certain operational procedures to enhance Jackup survivability and stationkeeping during hurricane season in the Gulf of Mexico during drilling, workover, and while stacked (idled) at a non-sheltered location. This document provides guidance and processes and, when combined with an understanding of the environment at a particular location, the characteristics of the unit being utilized, and other factors, may be used to enhance operational integrity. This interim recommended practice was developed through a cooperative arrangement with the International Association of Drilling Contractors' (IADC) Jackup Rig Committee. The information presented herein is premised on the existence of an evacuation plan, the intent of which is to assure timely evacuation of all rig personnel in anticipation of certain climatic conditions.

This RP is of an interim nature. IADC's Jackup Rig Committee and others continue to develop technical methodologies and solutions for Jackup rig operations in the Gulf of Mexico. Once these efforts conclude, and a comprehensive document is developed and published, it is intended that this Interim RP will be withdrawn by API. Current studies are underway including a study by the IADC Jackup Rig Committee to improve understanding of Jackup loads and response effects, spudcan fixity, and wave spreading. Other industry studies are ongoing to assess meteorological and oceanographic conditions during hurricanes in the Gulf of Mexico. The outcome of these efforts may require revisions to the information contained herein. Additionally, this RP will be reviewed, revised, or reaffirmed in accordance with API Standards Procedures.