Multiphase-Flow Measurement System of High-GOR Applications

Over the last decade, the development and deployment of in-line multiphase flow metering systems has been a major focus worldwide. Accurate measurement of multiphase flow in the oil and gas industry is difficult because it occurs in wide range of flow regimes and multiphase meters do not generally perform well under the intermittent slug flow conditions which commonly occur in oil production. A novel ultrasonic multiphase metering concept has been proposed and investigated which measures the flow rates of the liquid and gas phases from ultrasonic measurements made in two different flow regimes – partially separated and homogeneous — in the same measurement system and fuses the data from the different flow regimes to obtain improved overall measurement accuracy. The system employs a partial gas/liquid separation using a T-junction configuration and a combination of Doppler and cross correlation. The partially separated flow regimes uses ultrasonic cross correlation measurement for the liquid flow measurement which has gas entrained within it. The homogeneous regime employs ultrasonic Doppler method. This approach has been tested on water/air flows on a 50mm facility in the Department of Process and Systems Engineering. The liquid and gas flowrate measurements using the proposed techniques were compared with a reference measurement and good agreements between these two measurements were obtained with error ranging from ± 2% and 10%, respectively. Such a performance offers the potential for an in-line multiphase flowmeter with improved performance.

Download Full-text

A Novel Electrical Cpacitance Sensor Design For Dual Modality Tomography Multiphase Measurement

Jurnal Teknologi ◽

10.11113/jt.v64.2130 ◽

2013 ◽

Vol 64 (5) ◽

Cited By ~ 1

Author(s):

Muhammad Jaysuman Pusppanathan ◽

Fazlul Rahman Yunus ◽

Nor Muzakkir Nor Ayob ◽

Ruzairi Abdul Rahim ◽

Fatin Aliah Phang ◽

...

Keyword(s):

Multiphase Flow ◽

Flow Measurement ◽

Ultrasonic Tomography ◽

Pipe Surface ◽

Dual Modality ◽

Tomography System ◽

Imaging Result ◽

Process Tomography ◽

Single Sensor ◽

Capacitance Tomography

Electrical capacitance tomography (ECT) is one of process tomography technique which is developed rapidly in recent years. ECT is an imaging technique to obtain the internal permittivity distribution of a vessel or pipe by using capacitance electrodes sensor. This method has been integrated with ultrasonic tomography as multimodality system to perform multiphase flow measurement such as crude oil separation and oil process industry. In the present paper, a novel type of ECT sensor was developed using copper FR4 material. The electrode sensors can be flexibly bend or curve to fit the pipe surface for optimum measurement. Thus, every single sensor strip is designed to be functioned independently. Such system has lower sensing capability in the central of the sensing area which often contributes to poor imaging result. This problem can be overcome by combining the ECT with ultrasonic tomography to form a dual modality tomography system. By implementing the new ECT sensor, multiphase flow measurement image results can be achieved. The reconstructed image results are presented in this paper.

Download Full-text

Real-time air flow measurement system for use by speech therapists

Medical & Biological Engineering & Computing ◽

10.1007/bf02446304 ◽

1991 ◽

Vol 29 (1) ◽

pp. 98-101 ◽

Cited By ~ 4

Author(s):

G. McCurrach ◽

A. L. Evans ◽

D. C. Smith ◽

M. T. Gordon ◽

M. B. D. Cooke

Keyword(s):

Real Time ◽

Measurement System ◽

Flow Measurement ◽

Air Flow ◽

Speech Therapists

Download Full-text

Landweber iterative algorithm based on regularization in electromagnetic tomography for multiphase flow measurement

Flow Measurement and Instrumentation ◽

10.1016/j.flowmeasinst.2012.04.011 ◽

2012 ◽

Vol 27 ◽

pp. 53-58 ◽

Cited By ~ 21

Author(s):

Ze Liu ◽

Guoyin Yang ◽

Nan He ◽

Xiaoying Tan

Keyword(s):

Multiphase Flow ◽

Iterative Algorithm ◽

Flow Measurement ◽

Electromagnetic Tomography

Download Full-text

Invariant method for measuring wet gas flow rate

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2021-6-13-19 ◽

2021 ◽

pp. 13-19

Author(s):

Zhanat А. Dayev ◽

Gulzhan E. Shopanova ◽

Bakytgul А. Toksanbaeva

Keyword(s):

Flow Rate ◽

Measurement System ◽

Flow Measurement ◽

Gas Flow ◽

Test Results ◽

Invariant System ◽

Rate Measurement ◽

Gas Flow Rate ◽

Flow Rate Measurement ◽

Wet Gas

The article deals with one of the important tasks of modern flow measurement, which is related to the measurement of the flow rate and the amount of wet gas. This task becomes especially important when it becomes necessary to obtain information about the separate amount of the dry part of the gas that is contained in the form of a mixture in the wet gas stream. The paper presents the principle of operation and structure of the invariant system for measuring the flow rate of wet gas, which is based on the combined use of differential pressure flowmeters and Coriolis flowmeters. The operation of the invariant wet gas flow rate measurement system is based on the simultaneous application of the multichannel principle and the partial flow measurement method. Coriolis flowmeters and the differential pressure flowmeter are used as the main elements of the system. The proposed measurement system does not offer applications for gases with abundant drip humidity. The article provides information about the test results of the proposed invariant system. The estimation of the metrological characteristics of the invariant system when measuring the flow rate of wet gas is given. The obtained test results of the invariant wet gas flow rate measurement system are relevant for natural gas production, transportation, and storage facilities.

Download Full-text

Experimental Study of Multiphase Flow in Cold Box Core Process

10.1115/imece2000-2709 ◽

2000 ◽

Author(s):

Sayavur I. Bakhtiyarov ◽

Ruel A. Overfelt

Keyword(s):

Experimental Study ◽

Multiphase Flow ◽

Measurement System ◽

Pressure Measurement ◽

Test Specimen ◽

Filling Process ◽

Cold Box ◽

Pressure Measurement System ◽

Sand Deposition

Abstract The results of experimental study of pressure variations inside core box during resin bonded sand filling process are reported. The test core specimens were produced using Laempe® Test Specimen Curing Machine L 1. A special pressure measurement system was designed and built with safety and portability requirements of the foundry environment. Special experiments were conducted to establish the effect of sand deposition on vent permeability.

Download Full-text

The Study and Design of a UDP Flow Measurement System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.278-280.946 ◽

2013 ◽

Vol 278-280 ◽

pp. 946-949

Author(s):

Hai Feng Guo

Keyword(s):

Complex Network ◽

Measurement System ◽

Flow Measurement ◽

Data Flow ◽

Comparison Function ◽

Data Sets ◽

Network Environment ◽

Network Bandwidth ◽

Packet Capture ◽

The One

Proposed a way to UPD flow and UPD system ideology. The system is considered the one-way characteristics of UDP flow in the backbone of the network, used the WinPcap packet capture technology. The system including network packet captures module, packet replay module, packets spell flow module, UDP analysis module, while using the map template classes in stl, improved the performance of UDP packets through a comparison function with efficient custom;Contrast to the data characteristics under the complex network environment, the system adopts the step-by-step small tools design way to facilitate the system to expand new analysis function. Through the three sets of data : a backbone data sets and two DARPA1999 data sets, it can be seen that the overall development of UDP data flow is expanding the network bandwidth , and small UDP flows is more.The quicker network bandwidth development, the shorter the UDP flows average time.

Download Full-text