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Virtual multiphase flow metering and sand detection

A multi-phase flow and flow state technology, applied in the measurement of flow/mass flow, liquid/fluid solid measurement, measurement devices, etc., can solve the problems of large physical size, high complexity, high cost, etc.

Inactive Publication Date: 2017-03-22
SAUDI ARABIAN OIL CO
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Problems solved by technology

Other drawbacks include invasiveness, high power consumption, use of radioactive sources, high cost, high complexity and large physical size for downhole applications

Method used

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  • Virtual multiphase flow metering and sand detection
  • Virtual multiphase flow metering and sand detection
  • Virtual multiphase flow metering and sand detection

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Embodiment Construction

[0021] Acoustic emission

[0022] According to the present invention, acoustic emission in a multiphase flow is defined as the physical phenomenon of acoustic energy occurring in and / or on the surface of a fluid of a mixture of hydrocarbon hydrocarbons, water and sand. Acoustic emissions are produced by the spontaneous release of elastic energy in the broad frequency range of 1 KHz to 100 MHz, but most of the released energy is in the frequency range of 1 kHz to 1 MHz. Acoustic emissions can be generated from many sources, including:

[0023] (a) Bubble formation, collapse and coalescence;

[0024] (b) Turbulent noise generated by vortices and eddies;

[0025] (c) the interaction of liquids, gases, and solids in multiphase flows;

[0026] (d) broadband turbulent energy caused by high-flow eddies; and

[0027] (e) Intermittent and transient energy changes and fluctuations due to cavitation, flashing, and recirculation

[0028] Numerous investigations have been carried out ...

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Abstract

Virtual and non-invasive multiphase metering is performed for recognition of multiphase flow regimes of hydrocarbons and other fluids, flow rate, presence of sand, and other multiphase flow parameters. A passive acoustical detector system receives acoustical flow information in the form of acoustic emission signals, and a data processor processes and classifies the acoustical patterns. A statistical signal processing methodology is used. Acoustic models are provided for various flow regimes and flow patterns, using Artificial Intelligence methods including Hidden Markov Models and Artificial Neural Networks along with automated learning procedures. The metering can be used for downhole, top side and surface applications.

Description

technical field [0001] The present invention relates to virtual and non-invasive multiphase metering using acoustic emission measurements to automatically identify multiphase flow regimes of hydrocarbons and other fluids in downhole, topside and surface applications, and to metering the flow rates of such flow regimes , presence of sand, and other parameters. Background technique [0002] Simultaneous flow of two or more phases is called multiphase flow. The flow behavior of a multiphase flow is much more complex than that of a single-phase flow, and the flow regime or flow pattern in a multiphase flow depends on many factors, including: the relative density ratio of one fluid to another, the The difference in viscosity between and the velocity (slip) of each fluid. The term "fluid flow" may include oil, water, gas and solids (sand). Measurement of the multiphase flow parameters in the hydrocarbon flow regime and the presence of sand in the fluid is very important in orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/14
CPCG01N29/14G01F1/74E21B47/107
Inventor 塔尔哈·贾迈勒·艾哈迈德迈克尔·约翰·布莱克穆罕默德·纳比尔·努依-梅希蒂
Owner SAUDI ARABIAN OIL CO
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