gba mpd trn gbsetpoint for mpd
DESCRIPTION
setpoint dataTRANSCRIPT
GBSetpoint for MPD
Software How To Training
Nancy DavisCarrollton
Revision 1.0
GeoBalance Training
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Module Overview
• Purpose of GBSetpoint for MPD• Calculations• Components• Data flow .. Inputs, outputs GBSetpoint• GBSetpoint : Inputs• GBSetpoint : Outputs
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GBSetpoint: What is it’s job?
Automatic calculation of appropriate pressure set point for choke through all drilling activities based on desired bottom hole pressure.
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GBSetpoint: Model
Pore Pressure
Frac Pressure
Depth
Pressure
Underbalanced
Region
TraditionalDrilling
MPD – Target BHP
Collapse Press
- Measure - Analyze
Measured BHP
Set Point Pressure
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GBSetpoint … how does it get there?
Drillstring and Well bore GeometrySurvey dataMud Density
Mud Rheology
Hole and Bit DepthFlow Rate
Stand Pipe PressureWellhead Pressure
Running Speed
Desired Pressure from well modeling.
PWD Bottom hole Pressure
Surface
Setpoint
Pressure
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Model
• How does GBSetpoint model the downhole pressure?
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ECD Equivalent Circulating Density
• ECD = Hydrostatic Pressure (weight of fluid)
□ + Friction due to flow
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Hydrostatic Pressure
• Pressure due to weight of fluid
• Hydrostatic Pressure in PSIG =
TVD in feet *
Mud Density in ppg
* 0.052
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Friction due to Flow
Friction due to flow is a function of flow rate,
Geometryand
Fluid rheology
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ECD Equivalent Circulating Density
• ECD = Hydrostatic Pressure (weight of fluid)
□ + Friction due to flow
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TED Total Equivalent Density
• TED = ECD
+ Surge … pipe moving down (increases pressure)
OR
- Swab … pipe moving up (reduces pressure) NEGATIVE
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Surge Pressure +++++++++
• What is surge pressure?Surge Pressure: When pipe moves downward with mud circulation through drill string, additional bottom hole pressure called “Surge Pressure” is created. If surge pressure is too much, many problems will occur such as formation break down, partial mud loss and lost circulation.
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Swab Pressure ---------
• What is swab pressure?Swab Pressure: If a drill string , casing string or logging tool is being pulled out of hole too fast, due to bigger diameter almost same hole size, BHA/ bit, casing or logging tool will possibly swab mud out of hole, like pulling small a piston of syringe. For this reason, hydrostatic pressure of bottom hole will be reduced. Pressure reduction created by this situation is called “Swab Pressure”.
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TED Total Equivalent Density
• TED = ECD
+ Surge … pipe moving down (increases pressure)
OR
- Swab … pipe moving up (reduces pressure) NEGATIVE
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What isn’t modeled ???
□ Does not model cuttings□ Does not model 2 phases (liquid only)□ Does not model the U-tubing effect while tripping out of the
hole.
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WHP Setpoint Calculations
• WHP Setpoint = TargetBHP – Hydrostatic Pressure– Corrected Friction Pressure
Corrected Friction Pressure = Pressure due to flow *
Friction Correction Factor+ Pressure due to pipe movement *
Surge or Swab Correction Factor
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WHPSetpoint Correction Factor
• What is the correction factor?
– Correction factor is meant to adjust setpoint for actual pressure data (PWD)
– Applied to friction component of setpoint
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What is run? Software Components
...Installed with GB Setpoint installation
…Comes with GB Setpoint
Two programs are used; GBSetpoint for Monitor and Setup and GBSetpoint Server for calculations
GB Setpoint Monitor
GB Setpoint Server
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GBSetpoint - GBSetpoint Server
• GBSetpoint needs to be installed separately to Insite• Consists of GBSetpoint Monitor and GBSetpoint Server• To start Server, from System Manager Configure->Geobalance Servers
Check Yes beside Will this Computer be running GBSetpoint?
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Behind the scenes. Running GBSetpoint Server
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GBSetpoint Monitor
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Running GBSetpoint : Running correctly
Monitor when correctly configured should look something like screen on right ….
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GBSetpoint …. Not running server
This is how GBSetpoint looks when the server is not running.
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GBSetpoint …Server Not Calculating
GB Setpoint Monitor will give an invalid configuration warning when the Server is calculating but there are invalid inputs. In the picture on the left, the Server is running but the Flow Rate in is missing.
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GBSetpoint … Missing Variable
This is the result when one of the variables is not being received into GBSetpoint.
When not receiving data, last calculated does not increase.
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Well BasedGBSPConfig
INSITE Data Records
GBSetpoint Monitor
.
GBSetpoint ServerRun Based Real Time Data
FlowWHP
Running SpeedMD/TVD
WHP
Run Based Geometry Borehole, Borehole Comp, Borehole Prm
Drillstring, Drillstring Comp, Drillstring Prm
Well Based: Mud
GBSPResultsGBSPPWDCF
GBSPDiagnosticsGPSPInputRecTS
GBSPRTInputs
Run 50 GBSPTargetEqn
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GBSetpoint: General Tab
Real-time should always be set to one second.
Recorded is best set to one second, but decreasing
won’t change real time well control.
Leakoff Test numbers are entered on this screen.
Export/Import Configuration is used to save or load all
the settings for GBSetpoint.
Check the PWD in use box if PWD is being used.
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GBSetpoint: General Tab
• Enter the results from the Leakoff
Test in order to get the
Maximum Allowable
Casing Pressure (MACP)
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GBSetpoint: Mud Editor
Well Based: Mud Record
There are 3 tabs in the Mud Editor
• General
• Rheology
Fluid Properties
Within these tabs are Mud Parameters that must be entered in
order for GB Setpoint to start calculating. These parameters will
appear in bold font that will distinguish them from the other
parameters
GBSetpoint Server
GBSetpoint
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GBSetpoint: Mud Editor
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GBSetpoint: Mud Editor
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GBSetpoint: Mud Editor
Be sure to enter the OWR in the proper format. In the event
that the OWR is entered incorrectly, a window will pop up
reminding you to put it in the correct format.
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GBSetpoint: Mud Editor
By default, the Mud Editor will only show the fluids for the active well. To enable Mud
Editor from past wells that are still saved in the data base,
click on Options and click on Show Active Well Only. This
will remove the check mark and Mud Editor will show all
past wells.
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GBSetpoint: Mud EditorIn this example there is one active well and one
past well within Mud Editor. From here you can copy past records
and paste them into the current record.
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GBSetpoint: Mud Editor• Choose the record you wish to copy. This can be a record from a past well or it can be
a record from within the current well.• Right-click and select Copy Record.
• Go to your active well and choose the fluid you wish to edit. Right-click the selection
and choose Past Record.• From here you can edit the newly copied record to reflect the most recent mud report.
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GBSetpoint: Multiple MudsGB Setpoint can model for multiple drilling fluids in the
well bore. The Muds in Well tab will display the
density and volume of the multiple muds. The
adjacent tabs will show the type of fluid that is in the well and it’s properties.
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GBSetpoint: Multiple Muds• To change fluid type or fluid
properties of a mud being pumped into the wellbore select Change Mud in the Mud Tab.
• Set Current Mud box will appear• Choose the Mud type from the
drop down box and select the Display Color.
• Or you can choose to only change the mud density of the fluid going into the wellbore. Click on Override Density and type in the new density. Select the display color and choose OK.
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GBSetpoint: Multiple Muds• After the new mud has been selected, it will
appear as long as there is an active mud flow in.
• Place the cursor over the mud and the following will appear
1. Volume2. Density3. Top of the section for that particular mud.4. Bottom of the section for that particular mud.5. The length of the section of mud.• This is true for all of the muds present in the
wellbore, not just the current mud being pumped into the drill pipe.
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GBSetpoint: Multiple Muds• To increase the volume of mud present in the wellbore, click on the “+” button and select the volume, in bbl, you wish to add to the wellbore.
GB Setpoint can only add volume, not subtract existing barrels of mud in the
wellbore.
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GBSetpoint: Multiple Muds• To quickly fill the entire wellbore with
the mud that is currently being pumped in, simply click on the “Fill” button and the drill pipe and annulus
will fill entirely with the selected mud.
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GBSetpoint Rheology Inputs
Enter Fann Dial Readings, Press calculate, and Apply
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GBSetpoint Thermal Correction• Thermal correction can be
applied to the WHP Setpoint calculation. When Thermal Correction is applied to the model it will appear highlighted, when not in use it will be grayed out and will not be used in the calculation.
• For Thermal Correction to be applied;
1. Must have a Mud Temp In and Mud Temp Out
2. At least 2 point specifying Depth and Temperature
3. Current Pump Time will determine how the Thermal Gradient is applied within the wellbore.
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GBSetpoint Thermal Correction• Choose None if there are
no temperatures available in order to apply Thermal Correction. You can still calculate the WHP Setpoint but it will not account for Thermal Correction.
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GBSetpoint Thermal Correction• Input Mud Temperature In
/Out properties. • These values can be
obtained through a data exchange or Wits.
• Or you can Force Value if you have a know temperature.
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GBSetpoint Thermal Correction• To enter points for
Formation Thermal Gradient
1. Click Edit Thermal Gradient.
2. Choose the Depth from which you obtained temperatures.
3. Select Add.4. Input depth and the
temperature at that depth.5. Click Save Edit.
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GBSetpoint Thermal Correction• You will need to enter at
least 2 points. If you have more temperatures at different depths add them to the thermal gradient.
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GBSetpoint Thermal Correction• Pump duration will
determine how much Thermal Gradient will be applied.
• You can adjust the pump time by adding or subtracting the offset.
• You can choose the offset by changing the value in the box.
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GBSetpoint: Geometry
Geometry editor is used to enter borehole and drillstring geometry.
May have multiple geometries, it which case the geometry is selected using the combo boxes.
Incorrect Geometry data is one of the biggest reasons for failure of the monitor to display the wellbore and
drillstring.
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GBSetpoint: Geometry Bit Gauge and Total Flow Area come from the bit
properties in the selected drillstring.
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Surge and Swab
• Surge or swab will not be applied when rig activity is drilling.
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Surge and Swab
• When Surge/Swab is enabled when moving the drill pipe, a green light will appear next to the corresponding activity and will apply it to the calculation.
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Surface Parameters
The Insite source for the surface parameters are selected from the
“Surface” Tab.
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Bit Depth
Total Equivalent
Density including
WHP
Total Equivalent
Density without WHP
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Target at CD
Select Change Target to
change the target ECD or Pressure
Use Override to set the desired Target
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CSV Template
Create Template will create a CSV file with the
correct format.
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CSV Template
CSV file in the correct
format.
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CSV Import
• Import previously saved CSV file.
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Control Depth
• Correction factor can be applied at the Hole Depth, Shoe or any desired depth.
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PWD
Select to Apply
Correction Factor to Setpoint
PWD is averaged for calculation of
correction factor, this is
the number of points to average.
Deviation of injection flow
from on bottom flow average for inclusion in correction
factor
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PWD
• The timer on the PWD tab indicates when the last PWD point was received when there was a change in the PWD value.
• You can average up to 20 PWD points
• Low Limit on PWD cannot be change by inputting a value. The only way to lower the limit is to lower the modeled mud weight.
• PWD Depth Offset is the distance from the bit to the PWD sensor.
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WHP Setpoint
• Lead Chokes feature will engage when flow rate decreases at a rate above the Start threshold. • Lead Chokes feature will stop when the WHP is within the limit specified in the Stop threshold, to
the WHP Setpoint.
Lead Chokes during Pumps OFF
Hold SPP
during Pumps ON
Account for
pressure drop during GeoSpan
downlink
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Realtime ResultsWhen the mud pumps are
turned on and flow is going into the drill pipe, if SPP does not go above the threshold Friction will
not turn on until SPP goes beyond the
threshold. Where you are most likely to notice this is when the Rig is filling drill pipe while Tripping in the
hole.
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Realtime Results
GB Setpoint Monitor shows that calculations
for WHP Setpoint. Correction factors that
are disabled will appear grayed out and will not be accounted for. Thermal Correction is enabled in this situation, therefore it appears in white and is
applied to the calculation.
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Realtime ResultsOn the display you
can see the calculation for the Model Pressure at the Control Depth with the correction factors applied, if applicable. Along
with the calculation for the WHP
Setpoint.
This section of the of the display will show which processes are enabled.
Anything in green is enabled. Anything in Red is not enabled.