The successful commissioning, acceptance and performance of a large, harsh environment, highly automated new build jack-up rig to safely and successfully drill its first well (deviated HPHT) relies on the effective joint management by the Drilling Contractor and Operator. The key factors underlying this Success are correct equipment, the application of established procedures and experienced well trained personnel. This paper presents how co-operative management between the Drilling Contractor and Operator successfully brought the new build jack-up West Epsilon through the initial commissioning and acceptance stage to successfully drill a deep, deviated HPHT Well. Introduction The West Epsilon is a latest generation jack-up rig built in 1993. (Refer Figure 1) The rig is equipped with highly automated equipment to improve safety and drilling performance. It was selected by the Operator to drill 22/30c- 13, a deep, deviated HPHT well on the Elgin Field in the UK Central North Sea. The Well surface location is situated adjacent to 2 suspended HPHT wells. The rig was mobilised from Singapore and arrived at Invergordon, Scotland in September 1993. An intensive period of commissioning and acceptance tests by the Drilling Contractor and Operator followed. It was completed by the 3rd week in November 1993. The rig then moved to the 22130c-13 stand-off location. Several attempts to move onto the final location were aborted due to adverse weather conditions in conjunction with the tight positioning tolerance required to position a template over the existing 2 wellheads. The West Epsilon was jacked up on the final location on the 24 December 1993 and the Well spudded on 30 December 1993. The top hole section to the 13 3/8" casing shoe (3300m) was drilled under conditions of normal formation temperature and pressure. It was agreed that this period would be used as a ‘shake down’ period prior to entering the HPHT section. This period lasted 50 days from spudding the Well and was followed by a detailed audit prior to the transition to the HPHT section. To share the commercial risk of starting a new build rig an escalating day rate was agreed. This Paper describes how under effective co-operative management the West Epsilon and its crew were able to bring a new build, highly automated rig to readiness and drill the maiden well under HPHT conditions. EQUIPMENT AND CAPABILITIES Rio Selection A jack-up was selected to allow the use of an Xmas tree while testing as predicted surface temperatures would exceed the specifications of BOP rubber goods. General The key criteria in the selection of the West Epsilon for 22/30c-13 were:–Water depth 92m, rig capability 106.7m P. 723
This paper presents the procedures for universal models preparation of components and devices that can be used in various simulation software environments that can be used for electro-thermal systems analysis. Such approach is applicable for multiphysical analyses in areas such as electrical engineering, electronics and physics. The proposed method that involves generation of DLL libraries is explained based on multiphysical model comprising electric and thermal subsystems. The paper highlights a complementary benefit of models black-boxing that may play an important role for know-how protection. The analyses performed herein revealed that proposed universal models are able to produce credible quantitative results in case of all considered software environments (PSCAD, Matlab, DIgSILENT), however with significant differences in the recorded computation time. Streszczenie. Niniejszy artykuł przestawia metodę przygotowania uniwersalnych modeli komponentów, możliwych do użycia w różnych środowiskach symulacyjnych służących do analiz multifizyczyny w dziedzinach takich jak elektrotechnika, elektronika i fizyka. Zaproponowana metodyka uwzględniająca generację bibliotek DLL została przedstawiona w oparciu o multifizyczny model składający się z części termicznej i elektrycznej. Przeprowadzona analiza wykazała dużą zbieżność wyników pomiędzy rozpatrywanymi programami symulacyjnymi (PSCAD, Matlab, DIgSILENT), jednakże z zauważalnymi różnicami w długości trwania obliczeń. Uniwersalne modele komponentów bazujące na bibliotekach DLL do symulacji multifizycznych systemów elektro-termicznych
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