Tools for Pipeline Models

7/24/2019 Tools for Pipeline Models

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Tools for Pipeline Models

Saudi Aramco Flow Assurance Technical Exchange MeetingDhahran, Saudi Arabia November 1-2, 2015John D. Yurchevich PE


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Safety Moment - Stair Safety

2

On December 25, 2013, I fell down stairs at my house.

I had both hands full of boxes and I was wearing a long

housecoat.

When I started down the stairs my dog decided to race me

down and I either tripped over the dog or my housecoat.

I fell down 9 steps and landed face first on a hardwood

floor.

I cracked three ribs and damaged my shoulder requiring

surgery. The doctor said I was lucky!

Please learn from my mistake.

Always keep 1 hand on the hand rail and proceed with caution.

Saudi Aramco Flow Assurance Technical Exchange Meeting

Dhahran, Saudi Arabia November 1-2, 2015

John D. Yurchevich PE


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Developing Digital Data from Graphical Pump Curves

3Saudi Aramco Flow Assurance Technical Exchange Meeting



This is what you get: This is what you want:

The following tool can be used to create

tabulated data from the pump curve.


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The UN-SCAN-IT Graph Digitizer converts graph images to their underlying x vs y data automatically. UN-SCAN-IT

digitizer software works with most image formats (TIFF, JPG, BMP, GIF, etc.) from any scanner, digital camera, or other

image source to digitize plots, strip charts, instrumental output, old graphs, published graphs, etc. In addition to the many

graph digitizing features, UN-SCAN-IT can also integrate peak areas, smooth the data, take derivatives, re-scales graphs

and exports the x vs y data for use in other software programs.

If you have ever had to guess at the data values on printed graphs, hold two graphs up to a light to compare features, use

a planimeter

or cut and weigh technique to find peak areas, or "squint and click" on each point with a digitizing tablet, then you will f ind

UN-SCAN-IT to be an accurate, quick, and easy solution.

The Program


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Using Un-Scan-It

Initial View


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Lets Digitize the pump performance map we saw previously.

Initial View
http://snagi%20demo.avi/


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This is what we want.

The data can now be copied and pasted as needed.


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A Tool to Generate Pump Curves From a Single Point




What if we want to use a pump curve but we do not have any data?

Amec Foster Wheeler has developed a tool to generate pump

curve data from a single Head/Flow pair.

Required Inputs:

Flow at BEP (gpm); Head at BEP (ft);

Peak Efficiency (fraction);

Specific Gravity;

Shut-Off Head Rise Fraction (optional);

Pump Run-Out Fraction (optional); and

Exponent for Efficiency Equation (optional)

Pump Curve Generator
http://pump%20curve%20generator.exe/http://pump%20curve%20generator.exe/


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Lets use the data from our example curve:


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Lets use the data from our example curve:

Required Inputs:

Flow at BEP (gpm); 4700.0

Head at BEP (ft); 162.0

Peak Efficiency (fraction); 0.8

Specific Gravity; Shut-Off Head Rise Fraction (optional); 1.36

Pump Run-Out Fraction (optional); and

Exponent for Efficiency Equation (optional)

Pump Curve Generator
http://pump%20curve%20demo.avi/http://pump%20curve%20demo.avi/


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Results


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Simplifying Elevation Profiles




Pipeline modelers are provided elevation profile in many ways:

1. Alignment Sheets;

2. Data from GPS (manypoints often only feet apart); or

3. Data from Google Maps.

If the data comes from alignment sheets, they are typically read by

hand. However you can use UN-SCAN-IT.

Data from Google Maps can be used for new pipelines to get the

relative elevation between stations, valve, etc.

Data from GPS usually is provided in a text file or a spreadsheet.


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Here is an example of the data provided in an ASCII text file.


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Import file into Excel and save it.


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Plot the data in Excel. All 844 pairs.


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Run the Data Reducer Application

Adjust the number of points in the reduced elevation profile by adjusting

the slope tolerance (0 1000).

Rerun the application by selecting

Check the comparison of the existing profile and reduced profile for any

missing data.

Copy and paste the data as needed.
http://elevation.avi/http://elevation.avi/


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Capturing Output From Your Program or Desktop





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Capturing Output From Your Program or Desktop




What you can do with Snagit: Capture an Image;

Capture a Region, Window or Scrolla Window;

Capture the Entire Screen;

Capture a Fixed Region;

Capture an Object;

Capture a Menu; Capture a Shape;

Capture the Clipboard Contents;

Capture Off-Screen or Window Larger than Screen;

Capture multiple Areas of the Screen;

Capture Using a Time Delay or Schedule;

Capture a Video up to 1 GB;

Include Cursor if Desired.


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What you can do with Snagit: Capture an Image;

Capture a Region, Window or Scrolla Window;

Capture the Entire Screen;

Capture a Fixed Region;

Capture an Object;

Capture a Menu; Capture a Shape;

Capture the Clipboard Contents;

Capture Off-Screen or Window Larger than Screen;

Capture multiple Areas of the Screen;

Capture Using a Time Delay or Schedule;

Capture a Video up to 1 GB;

Include Cursor if Desired.

Documents

Tools for Pipeline Models