The Experts below are selected from a list of 2883 Experts worldwide ranked by ideXlab platform
Feng Dong - One of the best experts on this subject based on the ideXlab platform.
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modification to mass flow rate correlation in Oil water two phase flow by a v cone flow meter in consideration of the Oil water viscosity ratio
Measurement Science and Technology, 2010Co-Authors: Feng DongAbstract:Oil–water two-phase flow widely exists and its measurement is of significance in Oil Well Logging, Oil transportations, etc. One of the techniques in common use in Oil–water two-phase flow rate measurement is the differential pressure (DP) meters combining a theoretical model connecting the mass flow rate of the mixture with the differential pressures generated by the throttling element installed inside the pipeline. Though a number of publications focus on DP meters in measuring gas–water two-phase flows or wet gas, the existing models are still not very compatible in Oil–water two-phase flow. In this work, a series of Oil–water two-phase flow experiments were conducted in a horizontal pipe of 50 mm diameter and the flow rate was measured by a V-cone meter with a diameter ratio of 0.65. Available correlations of DP meters developed from gas–water flow are studied and compared with the measured data from the V-cone meter. A modified correlation is proposed based on the influence of viscosity of Oil upon the differential pressure model and three-dimensional computerized fluid dynamic (CFD) simulations. The results have shown that the proposed method achieves better accuracy in Oil–water two-phase flow rate measurement than other DP correlations, and it can be extended to other Oil–water flow conditions by adjusting the tuning factor.
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flow rate measurement of Oil water two phase flow based on v cone flow meter
Journal of Physics: Conference Series, 2009Co-Authors: Feng Dong, W Li, F S ZhangAbstract:In petroleum industry, Oil-water two-phase flow widely exists in production Wells, and the measurement of Oil-water flow is significant in Oil Well Logging. One method in common use is to build a theoretic model to connect differential pressures generated by a throttling set with flow-rate. Several measuring models were adopted and compared for model selection and modification. A V-cone with 0.65 diameter ratio was selected as the throttling set because of its special structure and intrinsic advantages. In the experiments, the differential pressures measured under different flow range were processed with a homogeneous flow model. And the results show that the error is small in the condition where the Oil and water are Well mixed, while the error is big when they are not Well mixed. A polynomial of the error and the water percentage was fitted to improve the model accuracy and widen the measurement range.
Yanbiao Liao - One of the best experts on this subject based on the ideXlab platform.
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A 3-Component Fiber-Optic Accelerometer Array for Well Logging
Optical Fiber Sensors, 2006Co-Authors: Meng Pang, Liwei Wang, Min Zhang, Xianhui Mao, Hongpu Zhou, Yanbiao LiaoAbstract:A 3-Component fiber-optic accelerometer (FOA) array used in Oil-Well Logging is presented. A novel and general parameter (SB2D-1P) to evaluate the characteristics of the interferometric FOA is brought forward
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three component bellows type fiber optic accelerometer
Advanced Sensor Systems and Applications II, 2005Co-Authors: Nan Zeng, Ming Zhang, Shu Rong Lai, Yanbiao LiaoAbstract:In many industrial systems, the sensor is desirable to directly respond to a vector component associated with some physical phenomenon, such as the acceleration, velocity or displacement. This paper focuses on the application of fiber-optic accelerometers in Oil Well Logging, presents a new design utilizing the combination of bellows structure and compliant material to enhance the unidirectional response of the fiber optic accelerometer. Furthermore, we accomplished a three components (3-C) acceleration sensing system by multiplexing three unidirectional sensing elements. Theory and experimental results show that our sensor can fulfill the demand of application in Oil Well Logging, including responsivity, operation frequency range and directivity. The demodulated signal and the acceleration of vibration measured exhibit a linear relationship, and the suitable measurement frequency range of the system is between 3Hz and 800Hz. The on-axis sensitivity, cross-sensitivity and minimum detectable level is -101dB re V/ug, -135dB re V/ug and 39.3ug/Hz1/2, respectively.
F S Zhang - One of the best experts on this subject based on the ideXlab platform.
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flow rate measurement of Oil water two phase flow based on v cone flow meter
Journal of Physics: Conference Series, 2009Co-Authors: Feng Dong, W Li, F S ZhangAbstract:In petroleum industry, Oil-water two-phase flow widely exists in production Wells, and the measurement of Oil-water flow is significant in Oil Well Logging. One method in common use is to build a theoretic model to connect differential pressures generated by a throttling set with flow-rate. Several measuring models were adopted and compared for model selection and modification. A V-cone with 0.65 diameter ratio was selected as the throttling set because of its special structure and intrinsic advantages. In the experiments, the differential pressures measured under different flow range were processed with a homogeneous flow model. And the results show that the error is small in the condition where the Oil and water are Well mixed, while the error is big when they are not Well mixed. A polynomial of the error and the water percentage was fitted to improve the model accuracy and widen the measurement range.
Benjamin W. Montag - One of the best experts on this subject based on the ideXlab platform.
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LITHIATED TERNARY COMPOUNDS FOR NEUTRON DETECTORS: MATERIAL PRODUCTION AND DEVICE CHARACTERIZATION OF LITHIUM ZINC PHOSPHIDE AND LITHIUM ZINC ARSENIDE
2016Co-Authors: Benjamin W. MontagAbstract:There is a need for compact, rugged neutron detectors for a variety of applications including national security and Oil Well Logging. A solid form neutron detector would have a higher efficiency than present day gas filled 3 He an
Al Muraikhi, Entisar Ali - One of the best experts on this subject based on the ideXlab platform.
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Optimization of A Combined Carbon/Oxygen And Neutron Porosity Oil Well Logging Tool
Scholarworks@UAEU, 2017Co-Authors: Al Muraikhi, Entisar AliAbstract:Well Logging technique is used to determine the physical and chemical properties of borehole formation, by using neutron porosity Oil Well Logging tools. The present study simplifies Logging tool design in order to reduce the time spent on obtaining Well Logging. We have combined both carbon/oxygen (C/O) tool and thermal neutron porosity tool. This has been done by adding boron lining on the detectors in C/O tool, where the boron lining acts as a thermal neutron porosity tool while maintaining C/O functions simultaneously. The Monte Carlo N-Particle (MCNP) Transport Code, which was originally developed in Los Alamos National Laboratory, is used to investigate the combined tool response. The combined tool is employed to detect the effect of porosity. The effects of several factors, such as (i) the source-to-detector spacing, (ii) borehole salinity, (iii) capture cross section, (iv) boron lining thickness, (v) formation salinity, (vi) borehole salinity, (vii) temperature, and (viii) the casing on the detection sensitivity are investigated. The results show that the number of detected gamma rays is proportional to the porosity. Furthermore, a sensitivity measure (i.e., the sensitivity ratio) is defined and used to characterize the detectors sensitivity to the porosity. The effects of various factors on the sensitivity are studied and the response function is found to be very sensitive to the porosity especially in the domain of low values of it. The temperature factor was only examined to assess its effect on the nucleus speed. However, the results of our simulations showed that the temperature has very little minor effect. Evidently, the tool is sensitive to the porosity while maintaining all the functions of the C/O tool, which suggests that the boron lining can efficiently serve as a replacement of the porosity tool
