How to (Remotely) Calibrate the Chromatograph or "Pick Peaks" for...

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How to (Remotely) Calibrate the Chromatograph or "Pick Peaks" for C-Values


This article discusses using iBall Instruments Gas Chart Software to remotely connect
to a Bloodhound and set peaks.  By "Remote" it implies that you are connected to the
Bloodhound over a network - it can be a Local Area Network (in the same trailer as
the Bloodhound even) or the Internet.

PREREQUSITES:
These are the requirements before attempting to remotely calibrate/pick peaks on a
Bloodhound using iBall Instruments Gas Chart Software:

1)  You must have iBall Instruments Gas Chart installed on your PC and operating with
     a remote connection to the Bloodhound on which you wish to calibrate/pick peaks.
2)  You must have an Administrator-level username and password to the Bloodhound.
     If you do not have this, contact your mud logging company's Bloodhound Support
     staff for this information/account.
3)  You must have at least 1 hour of current data from the Bloodhound in Gas Chart.
     You can accomplish this either by:
     a)  connecting the Gas Chart software to the Bloodhound and running it for
          roughly an hour or,
     b)  Downloading data from iBallRemote and importing it into the Bloodhound.  See
          the bottom of this article for a link to the article on doing this.
4)  The Bloodhound must be actively running on the well with a connected sample line.
5)  You want to be reading some gas with this exercise - trying to do this with 2 units
     of gas will simply not give you enough to work with.  A recommended minimum is
     somewhere around 100 units of gas.

VIDEO HELP:

To see a video-tutorial on how to accomplish this, click HERE. video1a

HOW-TO:

1)  Open iBall Instruments Gas Chart software.

2)  Make a connection to the Bloodhound that you wish to calibrate/pick peaks on:
     a)  Right-Click the mouse to bring up the "Gas Chart Control Box".
         
     b)  Click the "Setup" button to bring up the "Program And Equipment Setup"
          window.
         
     c)  Click on the "Bloodhound" tab.
     d)  In the section titled, "Local Ethernet Or Internet Connection Settings", be
          sure the check box to the left of "Use Ethernet Instead of Serial Connection"
          is checked.
     e)  Fill in the box to the left of the button that reads, "Look Up IP" with the
          appropriate Bloodhound ID (EX: "0112").
     f)  Click on the "Look Up IP" button.  NOTE:  You may see the field beneath
         "Remote Bloodhound IP and Port" change.
     g)  You are remotely connected to Bloodhound remotely.

3)  Enter "2-Way Interactive" mode so that picking the peaks will be accomplished.
     NOTE:  You can still go through the exercise below without being in "2-Way
     Interactive" mode, and it will act like it's picking peaks, but nothing will be
     changed on the Bloodhound.
     a)  Click the button at the bottom of the "Program And Equipment Setup" screen
          to bring up the "Unlock Connection" window.
          
     b)  Type in your Administrator-level Username and Password, then click on the
          button that says "Send".
     c)  Verify that you are connected in 2-Way Interactive mode by looking at the
          button you clicked at the bottom of the screen to bring up the "Unlock
          Connection" window.  If it is green and now reads, "Two Way Active" (as in
          the example below, you can proceed to to the next step.  If it is not, return
          to step 3-a and try again.  If it is still not working, call Bloodhound Support
          and ask them to verify the rights on your login to see if you have the privilege
          to enter 2-Way Active with your ID.
           

4)  On the right-hand side of the chart (the time-based side) double-click your left
     mouse button.

5)  You will now be able to "drag" a flashing line and a little green "time window"
     around.  Drag up or down by at least 30 minutes (on the chart).

6)  Double-click your left mouse button again, and you will get the "Select Items Box"
     (see figure below).


7)  Click on the "View Chromatograph" button on the top of this list.

8)  The "Chromatograph Data" window will pop up (see figure below).


9)  Understaning the "use" of this page:
     a)  The graph on the left represents the (by default) 8-minute burn of the
          chromatograph from left to right.  The gases burn off in their molecular-weight
          order from lightest to heaviest (Methane/Ethane/Propane/Butane).
     b)  The "peaks" are each of these gases.  You will see a vertical line through the peak
          with a "C-Value" associated with it from C1 to NC4.  This graph is picked correctly
          in that the vertical line/C-Value precisely intersects with the very peak of its
          corresponding gas.  In order, the C-Values represent the following:          

 C-Value

 Gas

 C1

 Methane

 C2

 Ethane

 C3

 Propane

 IC4

 Iso-Butane

 NC4

 Normal-Butane

     c)  The graph on the left can be moved up and down by clicking your left mouse
          button and "dragging" up and down.  This is useful when the chart comes up
          and the bottom is below the bottom page margin.
     d)  The graph on the left can also be "scaled" up and down with the slider on the
          right-hand side of the window.  This is useful when the peaks are either too
          large and scaled off the top, or too small and easier to pick when larger.
     e)  The information block to the right of the graph represents the individual
          characteristics of the sample.
     f)  The "Next" and Previous" buttons on this page allow you to cycle through
          various samples, up to the current sample (which will usually be only
          partially completed).  NOTE:  When at the most current sample, you need
          to click "Previous" then "Next" to get to the second-to-the-last sample.
     g)  The various "Set C... Peak" buttons are how you calibrate/pick peaks.

10)  To pick a peak:
     a)  Find a sample that is recent, and which reasonably shows the peaks of the
          various gases you know to be in your current mix.
     b)  Click on one of the "Select C... Peak" buttons on the right (for example,
          click "Select C1 Peak").
     c)  The button you clicked will flash and you may see red text at the top of the
          graph which reads "Double-Click On Peak To Set Timing".
     d)  Roll your mouse over to the graph, find the peak that you are trying to pick,
          and double-click your mouse.  If you were successful, you will see a pop-up
          window which looks similar to the following:
         

11)  Now, because the cromatograph has a cycle time (8 minutes by default), you
     have to wait for at least one complete cycle to complete before you can see
     the results of your peak pick.  That means that if the chromatograph cycle time
     is set to 8 minutes (the default), you must wait at least 16 minutes before going
     back into the Chromatograph Data window for the most recent sample to see
     the results.  However, your "C-Values" in the Real-Time Data window within
     Gas Chart will start to show the change on the next cycle and may show up
     earlier than 16 minutes.  The bottom line, is wait a little while and check your
     C-Values to see if they are correct.  Below is an example of the Real-Time Data
     window in Gas Chart, with acceptable peaks:
    

12)  NOTE:  Sometimes this takes a few tries to get it right, so don't be afriad to
     re-pick the peaks to get them properly calibrated. 

GENERAL NOTES ABOUT PICKING PEAKS:
1)  Shoulders:  Very often you will see the C2 peak as a "shoulder" off of C1 rather than
     as a distinctive peak value (a good illistruation of this is shown in the "Chromatograph
     Data" screen above).  When this is the case, we have found it works best to pick the
     peak on the outside corner of the shoulder (in this case the right corner).  If you
     pick the inside shoulder, we have found that the peak will "crawl" up the C1 curve and
     skew the C2 results higher than they should be.
2)  Troughs:  It is common with diesel or oil-based mud to see "troughs" leading, or in
     between the peaks.  This is not a problem - pick your peaks normally, and ignore
     the troughs.
3)  Bumps:  Often you will have enough gas to pick a peak, but even when you do, the
     value of the gas beyond C1 might show up as zero.  This is because there is a,
     "Chromatograph Noise Floor" which assumes numbers below it are simply noise.

Congratulations!  You have calibrated/picked peaks!


OTHER ARTICLES OF INTEREST:

How to (Locally) Calibrate the Chromatograph or "Pick Peaks" for C-Values:
http://www.bhkb.org/kb2/KnowledgebaseArticle50031.aspx

How to Download and Install iBall Instruments Gas Chart Software:
http://www.bhkb.org/kb2/KnowledgebaseArticle50050.aspx

How to download Data from iBallRemote and Import it into Gas Chart:
http://www.bhkb.org/kb2/KnowledgebaseArticle50022.aspx



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Details
Last Modified:11/18/2013 2:03:01 PM

Last Modified By: syonker

Type: HOWTO

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