Searched for: subject:"flow%5C+measurement"
(1 - 19 of 19)
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), de Jong, N. (author), Pertijs, M.A.P. (author), Verweij, M.D. (author)
Acoustic wave propagation in ultrasonic flow measurements is typically assumed to be linear and reciprocal.However, if the transmitting transducer generates a sufficiently high pressure, nonlinear wave propagation effects become significant. In flow measurements, this would translate into more information to estimate the flow and therefore a...
article 2021
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Dong, D. (author), Espinoza, L.A.T. (author), Loibl, A. (author), Pfaff, M. (author), Tukker, A. (author), van der Voet, E. (author)
article 2020
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Octaviano, R. (author), Hornstra, E. (author), Poort, J.P. (author), Shoeibi Omrani, P.S. (author), van der Linden, R.J.P. (author), Slot, H.J. (author), Dechelette, B. (author)
Due to natural depletion many mature fields are currently suffering from productivity issues due to halite precipitation in the North Sea. Main actions to prevent or solve this type of scaling issues include increasing flowing pressures (topside choking or velocity strings), but often considered easiest and most economical are fresh water washes...
conference paper 2020
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D.M. (author), Pertijs, M.A.P. (author), de Jong, N. (author), Verweij, M.D. (author)
Current ultrasonic clamp-on flow meters are manually calibrated. This process is based on manual placement of two single-element transducers along a pipe wall. Due to the usually unknown pipe properties and inhomogeneities in the pipe geometry, the axial distance of the transducers needs to be manually calibrated to align the location of the...
conference paper 2019
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Shoeibi Omrani, P. (author), Dobrovolschi, I. (author), Belfroid, S.P.C. (author), Kronberger, P. (author), Munoz, E. (author)
In this study we have investigated a fully data-driven approach (artificial neural networks) for real-time back-allocation and virtual flow metering in oil and gas production wells. The main goal of this study is to develop computationally efficient data-driven models to determine the multiphase production rates of individual phases (gas and...
conference paper 2019
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Massaad, J. (author), van Neer, P.L.M.J. (author), van Willigen, D. (author), de Jong, N. (author), Pertijs, M. (author), Verweij, M. (author)
Typically, ultrasonic flow meters assume linear wave propagation. Nevertheless, if the transducers of an ultrasonic flow sensor excite a pressure wave with a high amplitude, nonlinear wave propagation effects become significant. The appearance of higher harmonics increases the bandwidth of the received signal, which may potentially lead to a...
conference paper 2018
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van Willigen, D. (author), van Neer, P.L.M.J. (author), Massaad, J. (author), Verweij, M. (author), de Jong, N. (author), Pertijs, M. (author)
Transit-time ultrasonic flow meters are based on the fundamental idea that the flow is the only non-reciprocal effect between an upstream and downstream measurement. Non-identical transducers can be used in a reciprocal manner if the circuit is made reciprocal. In this paper we analyze the effect of driver- and readout electronics on the zero...
conference paper 2018
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van Beek, P.J.G. (author), Pereboom, H.P. (author), Slot, H.J. (author)
Prior to subsea installation, a subsea system has to be tested to verify whether it performs in accordance with specifications and component specific performance evaluation criteria. It is important to verify that the assembled components work in accordance with the assumptions and design criteria used in the detailed engineering. These criteria...
conference paper 2016
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Schiferli, W. (author), Cheng, L.K. (author), Jansen, T.H. (author)
Measuring flow is essentia ìn the process and oil & gas ìndustry. In the oil and gas industry, orifice plates and vortex meters are popular, since their lack of moving parts makes them robust. However, the need for electronics limits maximum process temperatures to 150 to 200'C. Special electronics can go up to 1100'C, but this makes the meter...
article 2012
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Geers, L.F.G. (author), Volker, A.W.F. (author), Hunter, T.P.M. (author), TNO Industrie en Techniek (author)
A novel flow measurement principle is presented enabling non-intrusive volume flow measurements of liquids in the ml/min range. It is based on an opto-acoustical time-of-flight principle, where the time interval is recorded in which a thermal label travels a known distance through a flow channel. Big advantages are the insensitivity to...
article 2010
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van Wees, J.D. (author), van Bergen, F. (author), David, P. (author), Nepveu, M. (author), Beekman, F. (author), Cloetingh, S. (author), Bonté, D. (author), TNO Bouw en Ondergrond (author)
Tectonic modeling is often neglected in the basin modeling workflow and heat flow is most times considered a user input. Such heat flows can, therefore, result in erroneous basin modeling outcomes, resulting in false overoptimistic identification of prospective areas or failure to identify prospects. This is particularly true for areas with...
article 2009
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Leskens, M. (author), de Kruif, B. (author), Belfroid, S.P.C. (author), Smeulers, J.P.M. (author), Gryzlov, A. (author), TNO Industrie en Techniek (author)
Multiphase flow meters are indispensable tools for achieving optimal operation and control of wells as these meters deliver real-time information about their performance. For example, multiphase flow meters located downhole can improve the production of multilateral and multizone wells by timely allocating the zone where a gas or water cone...
conference paper 2008
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Brouwer, G.K. (author), Fokker, P.A. (author), Wilschut, F. (author), Zijl, W. (author), TNO Bouw en Ondergrond (author)
The determination of the permeability field from pressure and flow rate measurements in wells is a key problem in reservoir engineering. This paper presents a Double Constraint method for inverse modeling that is an example of direct inverse modeling. The method is used with a standard block-centered finite difference method. With an a priori...
article 2008
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Serov, A.N. (author), Nieland, J. (author), Oosterbaan, S. (author), Steenbergen, W. (author), Bekman, H.H.P.T. (author), de Mul, F.F.M. (author), van Kranenburg, H. (author), TNO Defensie en Veiligheid (author)
An integrated optoelectronic probe with small dimensions, for direct-contact laser Doppler blood flow monitoring has been realized. A vertical cavity surface emitting laser (VCSEL), and a chip with photodetectors and all necessary electronics are integrated in a miniature probe head connected to a laptop computer. The computer sound processor is...
article 2006
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Tukker, A. (author), Buist, H. (author), van Oers, L. (author), van der Voet, E. (author), TNO Bouw en Ondergrond (author)
The EU Commission's Services asked TNO and CML to perform a study into the risks of the present uses of lead over time, as an input to a discussion on the need of a further reduction of the use of this material. The study was set up as a substance flow analysis to analyse trends in uses and emissions of lead in Europe between 2000 and 2030. The...
article 2006
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Belfroid, S.P.C. (author), Sturm, W.L. (author), Alberts, G.J.N. (author), Peters, M.C.A.M. (author), Schiferli, W. (author), TNO Industrie en Techniek (author)
By using a full dynamic model for both the well and the near well reservoir, a large range of instabilities can be simulated. These instabilities include gas lift heading, severes slugging and compressibility effects. To simulate these types of fluctuations it is necessary to use an integrated dynamic model for the complete system. Using a...
conference paper 2005
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Kooijman, G. (author), Golliard, J. (author), Hirschberg, A. (author), Technisch Physische Dienst TNO - TH (author)
The effect of one-sided grazing mean flow on the acoustical impedance of rectangular orifices is measured at low Mach number and low Helmholtz number by means of a single microphone method. The results are fairly consistent with previous experimental results obtained by means of a two-microphone impedance tube. Furthermore no significant...
conference paper 2004
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van de Velde, F. (author), Rollema, H.S. (author), Grinberg, N.V. (author), Burova, T.V. (author), Grinberg, V.Ya. (author), Hans Tromp, R. (author), TNO Voeding (author)
A series of ι-carrageenans containing different amounts of v-carrageenan (0-23 monomer %) have been prepared from neutrally extracted carrageenan of Eucheuma denticulatum. v-Carrageenan is the biochemical precursor of ι-carrageenan. The conformational order-disorder transition and rheological properties of these carrageenans were studied using...
article 2002
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de Looze, M.P. (author), Kuijer, P.P.F.M. (author), Society of Automotive Engineers (author)
In pushing and pulling wheeled objects, the effect of the exerted force on local musculo-skeletal loads depends on the direction of force exertion. Several questions about the direction of force exertion in pushing and pulling, the effects of handle height and force level on force direction, and the quantitative implications for musculoskeletal...
conference paper 1999
Searched for: subject:"flow%5C+measurement"
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