This paper describes a joint industry project to develop an electrically powered bottom hole assembly for use in coiled tubing drilling (CTD) applications. Phase I of the project, recently completed in Aberdeen, produced a highly successful prototype assembly that recorded over 190 hours of drilling time without failure. Whilst the prototype was made almost entirely from existing technology, the success of the test has generated confidence to develop a more fit for purpose' motor. A system overview explains the concept behind, and the advantages of, electric coiled tubing drilling (ECTD). The bottom hole assembly is described in detail, along with various surface components and the electrical power transmission system. The testing program and operational procedures are outlined, together with some of the key results. The development plan for the technology is reviewed to highlight the ultimate goal of producing a smart' drilling system. It is envisaged that, based upon feedback from near-bit sensors, such a system would be able to automatically adjust certain parameters to optimize drilling performance. The paper concludes that electric coiled tubing is a feasible and practical alternative to conventional CTD, although there are certain technological barriers that must be overcome. P. 61

This paper was prepared for presentation at the 1999 SPE/ICoTA Coiled Tubing Roundtable held in Houston, Texas, 25–26 May 1999.

This paper was prepared for presentation at the 1999 SPE/IADC Drilling Conference held in Amsterdam, Holland, 9-11 March 1999.

This paper was prepared for presentation at the 1999 SPE/ICoTA Coiled Tubing Roundtable held in Houston, Texas, 25–26 May 1999.

Premier Oil's drilling function has had global certification of its Drilling Management System (DMS) since August 2004. This certification is to both ISO (International Standards Organisation) 14001, an internationally recognised environmental standard and OHSAS (Occupational Health and Safety Assessment Series) 18001 which is a British Standard for Health and Safety. This paper outlines how Premier selected its certification authority, how certification was achieved and retained and how the process of certification has provided a tool for continuously improving the global drilling group's environmental, health and safety performances. Introduction Premier Oil is an independent oil and gas exploration and production company headquartered in London, England. In the last six years, Premier has operated exploration, appraisal and development wells offshore UK in Europe, offshore Indonesia and Vietnam in South East Asia, onshore Pakistan and India in South Asia and offshore Gabon and Guinea Bissau in West Africa. In 2009 / 2010 offshore Congo in West Africa and offshore Norway in Europe will be added to geographical areas of experience. The challenges associated with going for ISO 14001 and OHSAS 18001 certification will be addressed together with those associated with retaining the certification in a unique environment that is often characterised by short exploration drilling programmes in demanding areas, and most recently in a rig market characterised by tight supply, high rates and often inexperienced crews. This paper describes how Premier has overcome these hurdles and retained ISO 14001 and OHSAS 18001 certification over the years. Why go for Certification? At a Drilling Strategy Workshop held in Dubai in June 2003 it was agreed by the Premier Drilling team that a total rewrite of Premier's Drilling Management System was required to incorporate recently introduced management principles such as:Group, Team and individual well target settingHSES target settingEnvironment impact assessmentsRisk assessmentEnvironmental monitoring This rewrite was primarily performed by the Group Drilling Manager and a director of a leading environmental consultancy, and, whilst seeking internal funding for this project, Premier Oil Plc directors laid down the challenge to obtain both ISO 14001 and OHSAS 18001 certification. The primary reasons to achieve this certification were:To demonstrate that the management system performs to all the requirements of the exacting standardsTo provide a defined method for continuous improvementTo provide a means of moving towards world class HSES performanceThe Drilling Management System was rewritten and issued after 5 iterations in February 2004.