This paper describes both the challenges and development of a novel solution involving 3.5-in. diameter coiled tubing (CT) for deepwater pipeline commissioning applications. The work scope required that the complete solution be capable of multiple deployments and recovery operations using a single string of 3.5-in. CT from a floating support vessel. The project began with a detailed analysis of the existing available equipment and tools to determine their suitability and limitations for this application. Factors in this analysis included the limited vessel space available for surface equipment, crane capacity, and the suitability of equipment for working outboard on a vessel. This led to the planning, designing, and sourcing of suitable CT equipment. Trials were performed onshore to optimize the rigup, stackup, vessel layout, and assemblies handling. The combination of pre-operation planning and trials led to confidence in the new tools, work methods, and risk assessments. Because the purpose of the deployment work was to complete the commissioning work on several different marine pipelines and risers, the equipment and work methods had to be easily transferred between vessels. This paper presents and discusses the range of technologies that were developed and successfully applied for the first time globally to complete the project. These include the first fully sealable subsea quick-disconnect for CT, the first pump-through modular clump weight, and the first real-time, high-cycle fatigue (HCF) monitoring system to aid in CT pipe management. The deployment and recovery operations involved a wide range of challenges and led to the development of specific tools and methods for using large-diameter CT equipment. In addition to discussing the design and development of the solution, this paper presents the results and lessons learned from successfully using the large-diameter CT downline solution for deepwater pipeline commissioning applications.
Karmous, Kal (Santa Fe Intl. Corp.) | Wilson, Peter (Santa Fe Intl. Corp.) | Davidson, Colin (Santa Fe Intl. Corp.) | Simpson, Mike (Santa Fe Intl. Corp.) | Springett, Charlie (Santa Fe Intl. Corp.) | Donald, Gordon (Santa Fe Intl. Corp.)
This paper describes the philosophy and methodology used by a Drilling Contractor to systematically evaluate the potential impact of innovative technologies emerging in today's market place. The range of innovative technologies evaluated extend from equipment and processes that can impact drilling productivity, to innovations that can impact the traditional business models in the various service segments of the Exploration and Production, E&P, industry.
The desire to reduce field development costs, improve field recovery, and improve field economics has fuelled the acceleration of the E&P Industry's introduction of innovative technologies into the market place. The sheer breadth and depth of these new and emerging technologies require a systematic approach to evaluate the potential impact on a Drilling Contractor's existing equipment and service arrangements. The evaluation process must consider the value-added opportunity that any specific innovation may bring to the industry as well as any potential threat it may pose to the contractor's existing service. Innovative technologies with applications and influences on both down hole and/or on drilling facilities need to be carefully examined by the Drilling Contractor, so that informed decisions can be made with respect to the incorporation of technology into the contractor's future plans.
Effective investigation requires a dedicated technology resource. The investigation should tap into specific expertise within the greater organisation. Value engineering is an important component of the investigation. Value engineering has been around since 1961 when the term "value" was synonymous with reduced costs. Today an effective value analysis includes quality as an important component of the cost / benefit equation used to evaluate innovative technologies. An innovative technology can be defined as a new process or component that aims to provide better value by taking existing technology or tools to a higher level of "quality performance". "Quality Performance" is defined as superior performance based on quality principles. Innovative technologies can be as simple as a new tubular connection type or as large and complex as a new hull design for a deep water semi-submersible.
The areas that should be considered when completing a Value Analysis of a new technology include:
Performance advancement (productivity)
Risk reduction in
Existing business processes
Personnel skill set requirements