Frequency estimation is a classical and difficult problem that has drawn much attention in the last decades, as may be seen in its extensive literature. It is as interesting from the application as from the theoretical point of view. Indeed there are many applications for such estimators in the fields of rotating systems control like disk drives; active vibration control for helicopters, planes...

I am frequently asked to visit offshore production platforms to sort out problems with the oil export or the produced water quality where the ultimate issue is not poor control in the export or water-handling systems but due to over-aggressive level control at the reception end of the process. One of the tools available to decouple the front and back ends of the production train is error square...

Recent years, offshore outsourcing has received large amount of attention from both industry and academia because of its attractive advantages such as cost reduction, talent access. As an alternative way to implement information systems in operation management, offshore insourcing has been greatly overlooked. Though organizations shun from the contractual obligations in offshore insourcing, the...

In this paper, we present a WiSARD-based system facing the problem of Indoor Positioning (IP) by taking advantage of pervasively available infrastructures (WiFi Access Points – AP). The goal is to develop a system to be used to position users in indoor environments, such as: museums, malls, factories, offshore platforms etc. Based on the fingerprint approach, we show how the proposed weightless...

The works in the oil and gas industry are usually performed in open and exposed fields, constrained areas, restricted spaces, and other outdoor environments such as offshore rigs and platforms [1,2]. Workers in the oil and gas industry continuously experience the problems of noise, slippery surfaces, and numerous manual material handling exposures of carrying, lifting, lowering, pushing and pul...

This paper considers the problem of erosion in choke valves used on offshore oil platforms. A parameter commonly used to assess the valve erosion state is the flow coefficient, which can be analytically calculated as a function of both measured and allocated parameters. Since the allocated parameter estimation is unreliable, the obtained evaluation of the valve erosion level becomes inaccurate ...

Pliant abrasive media is transforming the way coating maintenance personnel approach offshore surface preparation. Pliant media users are often able to lower total job costs and provide higher quality surface preparation. 29(59,(:#2)#2))6+25(#0$,17(1$1&( Millions of dollars are being allocated toward the maintenance of offshore platforms with the goal to maximize oil production operations. A mo...

This paper presents the implementation of an adaptive control strategy of the climbing robot ROMA2. Its main area of application is an autonomous inspection of complex 3D infrastructure in construction industry, like bridges, skeletons of the buildings, offshore platforms, etc. Due to the fact that gravity factors have a high influence on the quality and security of the motion, the adaptive con...

Hydrocarbon explosions are one of most hazardous events for workers on offshore platforms. To protect structures against explosion loads, corrugated blast walls are typically installed. However, the profiles of real explosion loads are quite different depending on the congestion and confinement of Topside structures. As the level of congestion and confinement increases, the explosion load incre...

This paper proposes an underwater positioning system built with sensors distributed over the submarine infrastructure responsible for the oil production, which will be located by trilateration of acoustic signals emitted by units (vessels and platforms) with known coordinates. However, the acoustic signals needed to the calculation of the position depend on the vessels within sensors range. Thu...