Well Control Simulator for iPad

Example of the Driller’s Method

Surface StackRev: 1.1

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Well Control Simulator for iPadPortrait x Landscape

1) Use iPad on vertical position for options buttons; 2) Use on landscape position to see the well bore;

3) Tap on ‘Files’ button to set a data file;

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Well Control Simulator for iPad

4) Tap on ‘Unit System’ button:

Note: Also available on other views

5) Select the ‘Unit System’ option:

Select the Unit System

On MAIN, Select [OPTIONS] -> ‘Unit System’:

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Well Control Simulator for iPad

8) Tap on ‘Default Surface Stack’ button to load data in RAM memory:

9) For save it with any data files, enter ‘Surface 1’ for example on text box and Tap on ‘Save Data to File’ button.

10) For open any data file, roll up/down the wheel to select a data file by name and Tap on ‘Open File’ button;

Set a Data File

Notes:

- The data that are loaded in the RAM memory are saved to data file named with the content of File Name TextBox.

- When the text “Loaded” is “#”, the Ram Memory is loaded with Default Data.

- Attention for “Replace if exists” option.

- The data file is created in iCloud or Local according to the selected option.

Recommendation

Save your exercise with different filenames at the points of interest for analyzes

11) Attention: When a data file is removed, the data is lost.

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Well Control Simulator for iPad

12) Tap ‘Well Config’ button on Main View 13) Default Subsea Stack with full features

Set Well Configuration

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Well Control Simulator for iPad

14) Tap on ‘Mud/Gradients’ button on Well Config View 15) Set Gradients to:

- Absorption Gradient = 14.3 ppg - Fracture Gradient = 14.8 ppg

Set Mud and Gradients

Note: The ‘Power’ for Rheological Model is best to bring mud pump to kill speed on simulator:

16) Rheological model: Selected ‘Bingham’ for this example

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Well Control Simulator for iPadSet Equipments17) Tap on ‘Equipments’ button on Well Config View About the Surface Circulation Volume:

Surface Circulation Volume = Volume of the flow line, pipes, etc on circulation.

When occur a kick on the drilling, the driller stops the mud pump and the "Surface Circulation Volume" return to tank. The calculation of the real volume of the kick = Static Vol. after shut-in the well - Dynamic Volume on drilling - Surface Circulation Volume.

Example: Static Volume (mud pump stopped) = 500 bbl Drilling with mud pump @ 100 spm => Pit Volume = 470 bbl => Surface Circulation Volume @ 100 spm = 30 bbl - Shut-in the well => pit volume = 510 bbl - Kick Volume = 510 - 470 - 30 = 10 bbl

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Well Control Simulator for iPadRecord the Pump Pressure @ Kill Rate Speed

Kill Rate Speed = 30 spmKill Flow Rate = 125.5 gpmKill Rate Pump Pressure = 178.8 psi

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Well Control Simulator for iPadSet the Kick

3) Enter Kick Volume=10 bbl, SIDPP=300 psi and SICP=450 psi

5) Tap on Kick button again to close popup view

2) Select ‘sidpp/sicp’ option;

4) Tap on ‘Set’ button;

Note: The kick volume increases until the well is closed

1) Tap on ‘Kick’ button on Main View

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Well Control Simulator for iPadShut-in the well

3) The BOP is closed when Choke Option is selected

2) Select the ‘Drillpipe’ and ‘Choke’ options;

1) Tap on ‘Circ’ button on Main View

4) Tap on Circ button again to close popup view

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Well Control Simulator for iPadClose the choke

5) Tap on ‘close’ button;

6) Repeat until choke closed;

7) Note that kill pressure and choke pressure increases;

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Well Control Simulator for iPadStabilization of the pressures

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Well Control Simulator for iPad

Stabilization: ECD at Bottom Hole = Form Equiv Density (Critical ECD) => SIDPP=300 psi, SICP=484 psi, Vol=13.2 bbl

Checking the Stabilization of the pressures

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Well Control Simulator for iPadStarting the circulation

1) Open Choke ~ 2% (Kill Pressure 500 -> 495 psi) Bring the mud pump to 5 spm

OPEN CHOKE AND START MUD PUMP: Try to maintain KILL PRESSURE CONSTANT (~ SICP = 484 psi for 13.2 bbl)

2) Bring Mud Pump to ~ 5 spm Open Choke ~ 8% Bring Mud Pump to ~ 10 spm

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Well Control Simulator for iPadStarting the circulation

3) Open Choke ~ 10% Bring the mud pump to 15 spm

4) Open Choke ~ 12% Bring the mud pump to 20 spm

OPEN CHOKE AND START MUD PUMP: Try to maintain KILL PRESSURE CONSTANT (~ SICP = 484 psi for 13.2 bbl)

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Well Control Simulator for iPadStarting the circulation

5) Open Choke ~ 14% Bring the mud pump to 25 spm

6) Open Choke ~ 18% Bring the mud pump to 30 spm

OPEN CHOKE AND START MUD PUMP: Try to maintain KILL PRESSURE CONSTANT (~ SICP = 484 psi for 13.2 bbl)

FINAL ADJUST MUD PUMP => Real ICP = 505 psi (Initial Circulation Pressure)

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Well Control Simulator for iPadThe Driller’s Method

Using the ‘Well Control Methods’ App about procedure

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Well Control Simulator for iPad

Step 1: Circulate out the influx to surface: Maintaining ICP ~ 500 psi

Timer Options

The Driller’s Method

slow / fast buttons

slow / fast buttons

Timer Options

Pause ON/OFF button

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Well Control Simulator for iPadThe Driller’s Method

Step 1: Circulate out the influx to surface: Maintaining ICP ~ 500 psi

Check for Hydraulics Show / Hide the Bottom Hole Pressure and Pressure at Shoe Depth

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Well Control Simulator for iPadThe Driller’s Method

Graph Options Reset Options

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Well Control Simulator for iPadThe Driller’s MethodStep 1: Circulate out the influx to surface: Maintaining DP = ICP ~ 500 psi

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Well Control Simulator for iPadThe Driller’s Method

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Well Control Simulator for iPad

Step 2: Filling the Drillstring with Kill Mud Weight Set Kill Mud Weight = 11.1 ppg

1) Tap on ‘kmw’ button

3) Select ‘Enabled’ option;

2) Enter KMW=11.1 ppg; 4) Tap on ‘Set’ button;

The Driller’s Method

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Well Control Simulator for iPad

Step 2: Filling the Drillstring with Kill Mud Weight: Maintaining Kill Pressure ~ 320 psi

The Driller’s Method

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Well Control Simulator for iPadThe Driller’s MethodStep 3: Filling the Annular with Kill Mud Weight: Maintaining DP Pressure = FCP ~ 220 psi

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Well Control Simulator for iPad

This app was developed based on my experience. There was no comparison with any other software.

Our goal was to create a low-cost application with the help of experts to share with drilling engineers, technicians, drillers and students.

You can contribute with suggestions for improvements, correcting the translation to english, reporting bugs and spreading it to your friends.

Please visit our support url and see other applications for Oil & Gas for iPhone, iPod Touch, iPhone and Mac OS X.

Contact:contact@wellcontrol.com.br

Support URL:http://www.wellcontrol.com.br

On App Store:Oil & Gas Apps for iPhone and iPad

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