SYSTEM AND METHOD FOR MODELING CORROSION-BASED MULTIPHASE FLOW FRICTION IN PIPES

• US 20140081606A1
• Filed: 09/17/2012
• Published: 03/20/2014
• Est. Priority Date: 09/17/2012
• Status: Abandoned Application

• Current Assignee: King Fahd University Of Petroleum And Minerals
• Original Assignee: King Fahd University Of Petroleum And Minerals
• Inventors: OMER, MOHAMMED, ALNUAIM, SAMI
• Application Number:
  US13/621,796
• Publication Number:
  US 20140081606A1
• Time in Patent Office: Days
• US Class Current: 703/2
• CPC Class Codes: G06F 2111/10 Numerical modelling
• CPC Class Codes: G06F 2113/14 Pipes
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

The system and method for modeling corrosion-based multiphase flow friction in pipes is computer-implemented modeling software used to calculate the total pressure drop of a multiphase fluid flowing from an un-corroded portion of a pipe to a corroded portion of the pipe. In order to calculate the total pressure drop, gravitational deceleration, fluid deceleration, fluid friction and corrosion-based friction are each taken into account and included in the model. A conventional well, pipeline or the like is provided with a sensor, such as a fiber Bragg grating sensor or the like, for measuring an inner diameter of the pipe, and a sensor for measuring the coefficient of friction due to corrosion, such as an acoustic to resonant tensor cell tactile sensor or the like.

Claims

1. A system for modeling corrosion-based multiphase flow friction in pipes, comprising:

a processor;

computer readable memory coupled to the processor;

means for measuring a coefficient of friction μ

_corrosion of an interior surface of a corroded portion of a pipe, wherein the pipe has a total length of dl, an un-corroded portion having a length of dl₁, and the corroded portion has a length of dl₂;

means for measuring a velocity v of a multiphase fluid flowing through the un-corroded portion of the pipe;

means for measuring a velocity v_c of the multiphase fluid flowing through the corroded portion of the pipe, wherein a change in fluid velocity dv is calculated as dv=v−

v_c;

means for measuring an inner diameter d of the un-corroded portion of the pipe;

means for measuring an inner diameter d_corr of the corroded portion of the pipe;

a display;

software stored in the computer readable memory and executable by the processor, the software having;

means for calculating a total pressure drop from the un-corroded portion of the pipe to the corroded portion of the pipe dp_total as;

2. The system for modeling corrosion-based multiphase flow friction in pipes as recited in claim 1, wherein the means for measuring inner diameters d and d_corr comprise fiber Bragg grating sensors.

3. The system for modeling corrosion-based multiphase flow friction in pipes as recited in claim 1, wherein the means for measuring the coefficient of friction μ

_corrosion comprises an acoustic resonant tensor cell tactile sensor.

4. The system for modeling corrosion-based multiphase flow friction in pipes as recited in claim 3, wherein the means for measuring inner diameters d and d_corr comprise fiber Bragg grating sensors.

5. A method of modeling corrosion-based multiphase flow friction in pipes, comprising the steps of:

measuring a coefficient of friction μ

_corrosion of an interior surface of a corroded portion of a pipe having has a length of dl₂, the pipe having a total length of dl and an un-corroded portion having a length of dl₁;

measuring a velocity v of a multiphase fluid flowing through the un-corroded portion of the pipe;

measuring a velocity v_c of the multiphase fluid flowing through the corroded portion of the pipe, wherein a change in fluid velocity dv is calculated as dv=v−

v_c;

measuring an inner diameter d of the un-corroded portion of the pipe;

measuring an inner diameter d_corr of the corroded portion of the pipe;

calculating a total pressure drop from the un-corroded portion of the pipe to the corroded portion of the pipe dp_total as;

6. The method of modeling corrosion-based multiphase flow friction in pipes as recited in claim 5, wherein the inner diameters d and d_corr are measured by fiber Bragg grating sensors.

7. The method of modeling corrosion-based multiphase flow friction in pipes as recited in claim 5, wherein the coefficient of friction μ

_corrosion is measured by an acoustic resonant tensor cell tactile sensor.

8. The method of modeling corrosion-based multiphase flow friction in pipes as recited in claim 7, wherein the inner diameters d and d_corr are measured by fiber Bragg grating sensors.