... Abstract This paper presents a probabilistic study of various Gulf of Mexico (GoM) MODU mooring systems that was performed as part of the MODU Mooring JIP (Joint Industry Project). The intent was to determine the relative changes in reliability between different types of MODUs, with different...

... Abstract A significant challenge of predicting Mobile Offshore Drilling Unit (MODU) anchor performance is the lack of detailed sediment information. There are several proprietary and non-proprietary sources of seafloor and shallow sediment information. The various sources of sediment...

... Abstract During the Gulf of Mexico (GoM) hurricane seasons of 2004, 2005 and 2008, numerous moored Mobile Offshore Drilling Units (MODUs) had complete mooring system failures and thus were later found to be adrift. Also, a few units suffered failure of one or more mooring lines but at least...

... of soft clay and in layered soil illustrate how results from anchor analyses are used to document the design and to assist in the planning of an anchor installation. Introduction The current international guidelines for design and installation of fluke anchors for MODUs are developed with focus...

... Abstract The MODU Mooring Strength and Reliability Joint Industry Project (JIP) was a massive industry effort that involved all sectors of the MODU mooring industry, including drilling contractors, operators, equipment suppliers, consultants, and regulators. The project was originally...

... Abstract After the hurricanes in the GoM that resulted in several semi-submersible MODUs breaking adrift, one task of the MODU Mooring Strength and Reliability JIP was to develop a comparison between the risks associated with MODUs drilling within the Gulf of Mexico and other industries...

... Abstract As higher environmental criteria are now required for GOM MODU mooring operations, the accuracy of the mooring analysis for site assessment becomes more critical. Inaccurate mooring analysis may lead to wrong conclusion concerning the acceptability of a MODU for a specific operation...

... Abstract A digital twin representing the drilling system of a dynamically positioned (DP) mobile offshore drilling unit (MODU) has been developed and deployed in offshore Brazil. The primary output of the digital twin is a set of dynamic watch circles which are generated based off the predicted...

... Abstract With a goal to improve the overall reliability of moorings used by MODUs (Mobile Offshore Drilling Units), this paper reviews gaps and issues in design standards and operation practices. MODU moorings stay at one location for a short term, compared to tens of years for permanent...

... Abstract There are many idle mobile offshore drilling units (MODU) that present potential opportunities to reduce the cost of field development. This paper summarizes the background and proposes a design methodology that can be applied when companies look into the potential of modifying...

...OTC-27555-MS Time-Domain Research on Integrated Coupling Model of MODU, Drilling Riser and Wellhead Sheng Leixiang, Xu Liangbin, Zhou Jianliang, and Zhao Jingrui, CNOOC Research Institute Copyright 2017, Offshore Technology Conference This paper was prepared for presentation at the Offshore...

..., the design philosophy is to use relevant sections from codes and standards for similar equipment and types of operation in the CML design. The over-riding regulations, codes and standards which the CML system will fall under are the following: 2009 MODU Code, "Code for the Construction and Equipment...

... activities. In addition, constant threat from icebergs may require moored mobile offshore drilling units (MODUs) to be equipped with quick-release mooring systems in order to disconnect and move out of harm's way (Newfoundland Offshore Petroleum Installations Regulations, SOR/95-104).While a lot of attention...

... to deepwater operations and many software failures pose a risk of environmental and/or economic impact. The objective is to assess a Mobile Offshore Drilling Unit (MODU) systems architecture and communication connections for the possibility of unauthorized access. A review of Software Management of Change...

... will be positioned differently for each drilling case. When the drilling structure is cantilevered over a platform, the PCD would be on the platform. When drilling a well with a subsea wellhead, it will be positioned on a subsea wellhead. A primary requirement for the Arctic MODU is to handle the PCD. The PCD...

... Abstract In light of the recent increasing interest in the oil and gas developmentsin the arctic region, Huisman Equipment B.V. has developed a Mobile OffshoreDrilling Unit (MODU) named JBF Arctic suited for arctic condition. The stationkeeping in ice is one of the crucial factors determining...

... ABSTRACT Sürmene-1 is the last well of the 4 ultra deep water wells that were drilled in the Turkish Black Sea by a Mobile Offshore Drilling Unit (MODU). Sürmene-1 was spudded in November 2010 by a semisubmersible rig, Leiv Eiriksson (Ocean Rig), and was temporarily abandoned in January 2011 due to subsea...

... Abstract At the end of 2009, Statoil commenced four mobile drilling units (MODU) for operation in the Gulf of Mexico (GOM) and on the Norwegian Continental Shelf (NCS). The MODUs were Aker Spitsbergen, Deepsea Atlantic, Maersk Developer and Discoverer Americas. They were in general...

... joint; this will enable Managed Pressure Drilling from MODU utilizing standard equipment (slip joint etc.) The new technology will give the operator at all time status of the seals and gives time to evaluate before entering into a well control situation. The sealing method also enables a quick...