which well gas sensor uncertainty

Uncertainty quantification in production forecast for ...

· The productivity of shale gas well is often with high uncertainty because of the uncertainties in the characterization of formation properties, fracture properties, gas adsorption, and flow mechanisms. This paper provides an efficient method to probabilistically forecast shale gas production by combining the Markov chain Monte Carlo method (MCMC) and a semi-analytical model.

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Uncertainty Quantification Techniques for Sensor ...

Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants P Ramuhalli BG Braatz G Lin JB Coble SL Crawford BD Shumaker A Konomi HM Hashemian September 2013 . PNNL-22847 Rev. 0 Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants P Ramuhalli BG Braatz G Lin JB Coble(a) SL Crawford BD Shumaker(b) B …

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Measurement Uncertainty | Sea-Bird Scientific

· Adding the known uncertainties in the fixed points, the SPRT measurement system, and the transfer standards and technology yields a total known uncertainty of ±580 micro degrees C. Repeatability of a typical Sea-Bird production sensor is shown. The sensors have typical drift rates of better than degrees C in 3 months.

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GWD System Improves Wellbore Placement, Helps Manage Well ...

· Technology. Quest GWD is designed to reduce wellbore surveying time and the ellipse of uncertainty. The system incorporates Gyrodata’s new solid-state SPEAR sensors, which are based on the Coriolis vibratory gyroscope technology. The sensing element is driven to oscillate at a precise frequency and amplitude, and when rotated about its input ...

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Sensor Well Monitoring Systems - Pressure, Level, Flow ...

The SENSOR Remote Well Monitoring and Control System has a flexible design to provide a multitude of options using off-the-shelf components. Data can be collected wirelessly using communication protocols such as HART® and Modbus into a central control panel that is SENSOR manufactured using “plug-and-play” devices. Systems can be designed for monitoring and controlling the wellhead ...

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Sensor Uncertainty Mitigation and Dynamic Well Clear ...

Article “Sensor Uncertainty Mitigation and Dynamic Well Clear Volumes in DAIDALUS” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and ...

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Uncertainty and Risk Evaluation During the Exploration ...

Uncertainty and Risk Evaluation During the Exploration Stage of Geothermal Development ... decision-making for allocation of limited exploration capital, as well as communication with potential investors and insurers. The characterization of project risk and uncertainty has been pursued extensively in the natural resource sector, particularly in the oil & gas industry, motivated by a desire to ...

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[PDF] Gas Sensor Array Dynamic Measurement Uncertainty ...

Metal oxide semiconductor (MOS) gas sensor array dynamic measurement uncertainty evaluation, which currently mainly uses static measurement approximation estimations, cannot accurately distinguish the measured value of the sudden change of the measured value caused by the dynamic mutation of the measured gas or the actual sensor array local fault caused by the sudden change of the measured ...

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Uncertainty Quantification - P10 P50 P90

Uncertainty Quantification - P10 / P50 / P90 *. When there are significant uncertainties in our heterogeneous reservoir descriptions, as there almost always are, there is no such thing as a meaningful P10, P50, P90, or Px case description. There are only meaningful P10, P50, or Px results that must be determined from probabilistic analysis.

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What is the uncertainty of my sensor? - Technical ...

The uncertainty of a measurement is not defined solely by the instrument of measurement, such as a sensor. As such, there is no complete answer to this question that Vernier can provide. Experimental uncertainty is influenced by multiple factors, including elements having little to do with the sensor, such as the experimental design. This is why most scientists report the mean and standard deviation of the …

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Measurement uncertainty of a pressure sensor submitted to ...

· The uncertainty in the speed of sound is expressed by: (21) u a 2 = ∂ a ∂ T 1 2 u T 1 2 whose derivative function results in: (22) u a 2 = γ R 2 γ RT 1 2 u T 1 2. The uncertainty in u T 1 is the resolution of the instrument used to record the temperature and the assumed probability density distribution is rectangular. Applying the law of propagation of uncertainty in Eq.

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Uncertainty Estimation In Natural Gas Flow Measurement and ...

· Uncertainty in analyzed gas composition mainly depends on repeatability in sample volume, its separation and uncertainty in the reference calibration gas. Certified reference gas (calibration gas) should be of primary standard prepared using gravimetric method. GC repeatability depends on ambient temperature variation. Installation provisions that reduce the ambient temperature effect on GC like …

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Decision Making Under Uncertainty | by Naser Tamimi ...

· Noise in data is the most well-known type of data uncertainty. For example, sensors are not perfect, and they always record some degree of noise. It is important to know that uncertainty in data is not limited to noise. Uncertainty about the data source and what data is representing are also two other examples of data uncertainty. Imagine you have a perfect sensor, but you are unsure about ...

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Uniformity, Repeatability, Stability, and Accuracy

Accuracy is determined by performing a general expanded uncertainty analysis, where all of the systematic and random uncertainties are combined using ISO uncertainty standards. For each of the examples above, we must assume that a large sample size was used, and that the sensors used were chosen at random. As an example, sensor specifications ...

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Sensors | Free Full-Text | Uncertainty Analysis of ...

Offshore oil and gas facilities are currently measuring the oil-in-water (OiW) concentration in the produced water manually before discharging it into the ocean, which in most cases fulfills the government regulations. However, as stricter regulations and environmental concerns are increasing over time, the importance of measuring OiW in real-time intensifies.

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What is the uncertainty of my sensor? - Technical ...

The uncertainty of a measurement is not defined solely by the instrument of measurement, such as a sensor. As such, there is no complete answer to this question that Vernier can provide. Experimental uncertainty is influenced by multiple factors, including elements having little to do with the sensor, such as the experimental design.

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Measurement Uncertainty Estimation in Amperometric Sensors ...

sensors (both for liquid and gas-phase measurements). The main uncertainty sources are reviewed and their contributions are discussed with relation to the principles of operation of the sensors, measurement conditions and properties of the measured samples. The discussion is illustrated by case studies based on the two major approaches for uncertainty evaluation–the ISO GUM modeling …

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Sensor System Optimization Under Uncertainty | SpringerLink

· In this chapter, we present a way to statistically optimize sensor systems, to reduce systematical as well as random deviations. This is achieved by defining design parameters and calibration methods using statistical optimization. We further demonstrate the use of this method on a practical use-case example, including the application of an uncertainty calculation toolbox, …

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NSFMW 2002 Wet Gas Uncertainty Based Allocation - SOLV

complex, but there are other problems which must be addressed as well. One is the determination of the uncertainty of each wet-gas meter at subsea flowing conditions. Another is the transformation of those uncertainties to the environmental conditions of the reference meter in order that the appropriate equations can be applied. Perhaps the most significant is the detection and allowance for

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Uncertainties with power sensor calibration

sensor u(P 3DUT): Uncertainty of the measured power from the monitor PM when DUT sensor measured u(P DC,std): Uncertainty of the measured power from the PM connected to the STD sensor u(P 3std): Uncertainty of the measured power from the monitor PM when STD sensor measured u( DUT): Uncertainty of the reflection coefficient of the DUT sensor u( std

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Gas Sensor Array Dynamic Measurement Uncertainty ...

· Metal oxide semiconductor (MOS) gas sensor array dynamic measurement uncertainty evaluation, which currently mainly uses static measurement approximation estimations, cannot accurately distinguish the measured value of the sudden change of the measured value caused by the dynamic mutation of the measured gas or the actual sensor array local fault caused by the sudden …

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