Novel Metering System for the Three Phase Flow in Horizontal Oil Pipes under Steady Flow

Novel Metering System for the Three Phase Flow in Horizontal Oil Pipes under Steady Flow. Masters thesis, King Fahd University of Petroleum and Minerals.

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Arabic Abstract

في حقل صناعة الزيت يتم ضخ الزيت خارج ابار الانتاج الى اماكن التخزين او التصدير خلال الانابيب الافقية. التحديد الدقيق لهذا الحجم يتسم بكثير من الصعوبات التقنية. ان تدفق الزيت في هذه الانانيب يكون عادة مخلوطا بمياه مالحة وبكثير من الغازات فيما يسمى بالتدفق ثلاثي الاطوار, وبالتالي علينل تقدير حجم الزيت وسط هذه المكونات. تم في هذه الرسالة تطوير نظام لقياس سعة المكثف المكافئ للانبوب حامل المكونات الثلاثة ونسنته الى كمية الزيت المارة في الانبوب. هذه السعة قيست من الداخل ومن الخارج لتقييم حجم الزيت. في هذا العمل استخدمت عدة طرق لايجاد السعة المكافئة . استخدمت اولا الاثبات النظري لقيمة المكثف المكافئ, ثم استخدمت طريقة "الفارق المحدد " العددية. تم تأكيد النتائج باستخدام اسلوب " الالواح المائلة" وهو اسلوب استحدث في جامعة الملك فهد لاول مرة. تم تأكيد النتائج بالتجارب المعملية.

English Abstract

In the oil industry, oil is pumped out of the producing wells into pipelines to different destinations. Estimation of the volume of the oil flowing in the pipes is a very important element in the determination of the size of production. The problem is quite difficult because the fluid is normally composed of three different elements consisting of saline water, oil and gas. In this work we have developed a technique to solve this problem by externally measuring the capacitance of liquids in the pipe line and then relating the capacitance to the liquid height. So a metering system for oil industry to calculate the amount of each component is designed based on the solution of static electric field solution for longitudinally partially filled circular waveguides. The problem of determination of the capacitance of a partially filled circular waveguide with a substance having a dielectric constant εr is attempted. The problem is attempted both theoretically and numerically and the interrelation between the measured capacitance and the volume of the liquid inside the pipe is made. Theory is also formulated for empty and longitudinally partially filled circular waveguide. To solve the problem numerically the “Finite Difference Method (FDM)” is used and results generated by FDM are compared to the values of capacitance obtained from “inclined plate capacitance method”. MatLAB is used for simulations and analysis. Finally experiments are carried out for different cases and the results obtained from numerical analysis are compared to experimental results.

Item Type: Thesis (Masters)
Subjects: Electrical
Department: College of Engineering and Physics > Electrical Engineering
Committee Advisor: Hassan, Dr. Essam El
Committee Members: Iqbal, Dr. Sheikh Sharif and Qureshi, Dr. Khurram Karim
Depositing User: MUHAMMAD SAJID IQBAL (g201306910)
Date Deposited: 10 Jun 2015 05:32
Last Modified: 30 Dec 2020 12:18