| dc.description.abstract | The main objective of this project is to analyses the factors that affect the cost and
efficiency during the offshore 3D seismic survey.
Four parts will be discussed to support the main objective--the equipment, environment, decision making on the investment and human factors. These parts will analyze how those elements affect the cost and efficiency in 3D seismic surveys and how to optimize these effects during production. The study focus on examples from South China Sea working area to back up the argument.
The first part introduces the equipment, which as the executive element employed in almost all offshore activities we want them to run without problem as long as possible and to be as efficient as possible. So the problem with the equipment usually cause down time for long hours. The root causes are identified as below: lack of maintenance or lack of spare parts or lack the knowledge to handle it. If we have proper maintenance plan/strategy, the equipment would probably be in service for longer period before break down.
As to the maintenance and spare parts for the equipment, we would elaborate within the field of equipment Operations and maintenance management. And condition monitoring and management would be probably used as well if necessary, such as Thermography, Vibration monitoring, Thermodynamic monitoring, Wear and oil monitoring, Nondestructive testing. As to the critical spare parts, the economic spare part will be discussed.
Part two, the environment. In this chapter, mostly we would talk about the
environment that affect the vessel efficiency, for example, the sea state, wind, typhoon, sea current etc. As ergonomics for human working condition is a critical factor, we would single this out in the human performance part which is part three.
When we mentioned the weather in South China Sea, there always Typhoon during
summer, the rough sea state cause the data we acquired very noisy and this kind of
data may not be preferred and may need be acquired again, that would cost time and waste money, what’s worse is we should pick up streamers for the shelter to avoid the Typhoon, this would cost even more. This part will be supported by history statistic data of typhoon effect. The harsh weather in winter in BoHai bay or North Sea would not be included in the project although it affects seismic activity a lot.
Part three, since the equipment investment will cost much, when we make decision
for the new investment, we shall consider how could we use our limited money to get the most benefit. A practical example from COSL would be listed to illustrate how to make reasonable decisions and investment based on the calculation of excel.
Part four, human factors, as the most important character in all the programs or
projects, will be analyzed from the prospective of how would it affect the cost and
efficiency in the seismic survey. The human resource, human performance, project
management as well as ergonomics have great influence on the cost and efficiency.
How many employees we need now? How they should be trained to suit the job? How their efficiency will be improved? And shall we follow the principle of job design to fit the workers. This may refer to several aspects with respect to project management and Human factors, technology and organizational issues. As a project, optimize the project management strategy and do proper risk assessment to minimize the cost and save more time would be discussed. | nb_NO |
