*** Coming soon on the App Store ***
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Version 2.5.1:
Minor fixes: Importing kick volume from graph with decimals to the Calculations view.
More details at: http://www.wellcontrol.com.br/?pag=kicktolerance
The Well Control for Mac provides to drillers, tool pushers, engineers, chemists, students and other professionals in Oil & Gas industry a productivity tool helpful in drilling of oil wells the understanding the methods of well control.
This application uses the basic calculations of the methods to control oil wells after the occurrence of kick during drilling operations on floating platforms and landing rigs.
Well Control Methods:
1. Driller’s Method
2. Wait and Weight
3. Static Volumetric: Migration;
4. Static Volumetric: Lubricate and Bleed (Top Kill)
5. Dynamic Volumetric
Others features:
1) Calculations of Riser Safety Margin;
2) Included the formulas;
3) Ability to work with data files (On Mac / iCloud);
4) Pop-up view to alert user about invalid values (option);
5) Ability to move drill string and position of kick off the bottom;
6) Views with calculations of hydrostatics, capacities, volumes and more.
7) Defining the parameters of the well, drillstring, drill bit, mud (fluid), mud pumps, circulation lines on surface, diameter and coefficient of choke and more;
8) Options wells in floating units or in drilling land rigs;
9) Selection of rheological models (Bingham and Power);
10) Calculation of the ECD on bottom hole and the casing shoe;
11) Hydrostatic calculations at the bottom hole and the casing shoe;
12) Selecting the system of units;
15) Drill string sections: Drillpipe1, Drillpipe2, Heavy Weight, drill collar 1 and drill collar 2.
16) Included Qty / Size of Jet Nozzles;
17) Option for Bit TFA fixed;
18) View for Internal pipe and Annulus friction losses and hydrostatic calculations.
19) Directional basics Hydrostatic calculations (KOP, Bottom Hole and Casing Shoe TVD and Measured Depth)
20) Summary of methods;
21) Sections in the well: Riser, Casing, Liner and Open Hole.
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New in these updates:
– Send data file by email;
– Open in… (on Mail App and file managers apps)
– Backup and Restore data files with iTunes File Sharing.
Description
This application uses the basic calculations of the methods to control oil wells after the occurrence of kick during drilling operations on floating platforms and land rigs.
This app is completely interactive and allows users to define a wide variety of parameters for oil wells and unit system, save data and more.
It is can be applied in the oilfield and also help on understanding the methods of the well control.
Well Control Methods:
For Simulation, use the another app “Well Control Simulation”.
For new features, report bugs, improvements and suggestions please contact us: contact@wellcontrol.com.br
Well Control Methods:
1. Driller’s Method
2. Wait and Weight
3. Dynamic Volumetric
4. Static Volumetric – Migration / Bleed
5. Static Volumetric – Lubricate / Bleed (Top Kill)
Others:
6) calculations of Riser Safety Margin;
7) Included the formulas;
8) Ability to work with multiple files;
9) Sections: Riser, Casing, Liner and Open Hole;
10) Pop-up view to alert user about invalid values;
11) Send resume of methods by email.
12) Show graph theoretical of the methods.
13) Set drillstring with drillpipe1, drillpipe2, heavy weight, drillcollar1 and drillcollar2;
14) Select floating rig or land rig;
15) Select unit systems: Metric, SI, field1 (imperial) and field2 (mix);
16) set fluid parameters: mud weight, plastic viscosity, yield point and initial gel;
17) Select rheological models: Power or Bingham;
18) Set gradients: formations and temperature;
19) Set jet nozzles or fixed TFA;
20) Vertical or Slant Well Type (KOP, TVD and Measured Depth);
21) Set surface circulation equipments (mud pump and lines);
22) Save configuration to data files;
23) Show schematic of well with drillstring;
23) Useful for filling of Standardized Kill Sheets for Well Control;
24) Useful for Filling of Previous Recorded Sheets;
25) Capacities and Volumes calculations;
26) Hydrostatic and critical pressures calculations;
27) Hydraulics calculations;
During drilling operation of oil wells, there may be inflow of formation fluids into the well, which is an undesirable condition. The driller should detect such events and closing the well immediately. Record information after the closing of the well corresponding to stabilization of pressure, volume gain, SIDPP (Shut-in Drillpipe Pressure) and SICP (Shut-in Casing Pressure. In the case of operations on floating units (subsea stack), this term could be redefined as Shut-in Choke Pressure).
The control method to be applied is the driller’s method. That is to circulate the influx even with the original weight of the mud, keeping constant the circulation pressure named ICP – Initial Pressure Circulation. The second circulation should be made with the kill mud weight in two steps:
1. Fill the drill string until the bit by keeping the pressure at the Choke (at the KILL, on subsea stack) constant and equal to SIDPP.
2. Complete circulation of the annular to the surface keeping the pressure of circulation with the kill mud constant named FCP – Final Circulation Pressure. On subsea stack, after the choke fully open, the pump pressure increases until FCP 2.
Attention: about drill bit off bottom
This method should only be applied with the drill bit in the bottom hole or when the kick is completely in annular of the drill string. To minimize errors of calculation of the kill mud weight, the calculations made in this application considers the depth of the drill bit instead of the depth of the well to calculate the kill mud weight.
The formation pressure consider the depth of well. In case of top of the kick bellow the bit, it is recommended to apply the volumetric method until kick go through the drill bit to the annular, following then the driller’s method.
Formulas:
ICP = Pks + SIDPP
ICP - Inital Circulation Pressure, psi
Pks - Recorded pump pressure at the kill rate speed, psi
SIDPP - Shut-in Drillpipe Pressure, psi
Notes about floating units:
a) Pks must be recorded by circulating riser;
b) Record the friction loss in the choke line at the kill rate speed, psi;
KM = OM + SIDPP / (0.0519 x TVD)
KM - Kill Mud Weight, ppg OM - Original Mud Weight, ppg TVD - True Vertical Depth, ft
FCP = Pks x KM / OM
FCP - Final Circulation Pressure, psi
FCP 2 = (Pks + ΔPcl) x KM / OM
FCP 2 - Final Circulation Pressure with Kill Mud at Choke, psi ΔPcl - Choke Line Friction, psi
Summary of method
| STEPS | PUMP PRESSURE | KILL PRESSURE | CHOKE PRESSURE | VOLUME TO PUMP |
|---|---|---|---|---|
| Bring the pump to kill speed | – | SICP | SICP – Choke line loss | – |
| Circulate out the influx to surface | ICP | – | – | Bit to Surface |
| Circulate to fill drill string with kill mud | – | SIDPP | SIDPP – Choke line loss | Surface to Bit |
| Circulate to fill annulus with kill mud | FCP | – | – | Bit to Surface |
Formulas used in calculations of this method:
Screenshot from WCMethods:
Example in Well Control Simulator:
Screenshot from Well Control Simulator for iPhone and iPod Touch:
DRILLER’S METHOD |
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WAIT AND WEIGHT METHOD (ENGINEER’S METHOD) |
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DRILLER’S METHOD |
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WAIT AND WEIGHT METHOD (ENGINEER’S METHOD) |
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Importing Data from other Apps:
 Well Control Simulator iPhone | iPad |
 Drilling Simulator iPhone | iPad |
 Leak-Off Test Simulator iPhone | iPad |
 Kick Tolerance iPhone | iPad Mac OS X |
 Drilling Hydraulics iPhone | iPad Mac OS X |
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Visit our Portfolio on the App Store for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
Visit our website for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.
This application uses the worksheets based on standardized worksheets of the methods to control oil wells after the occurrence of kick during drilling operations on floating rigs with subsea stack and rigs with surface stack.
This app is great for use in the offices: Toolpusher, drilling engineer, company man, technicians, superintendent and OIM.
It can be used on the rig (offices) by drilling staff and also help in the understanding of the methods of well control.
Well Control Worksheets for Methods:
– Driller’s Method
– Wait and Weight Method
– Option to select “Subsea Stack” or “Surface Stack”
– Option to Select Unit Systems: METRIC, SI, IMPERIAL and MIX
– Selection of units also per parameter
– Printing and attachments with retina display- Ability to use gestures
New in this update:
– Fix unit of the “Max. Mud Weight” parameter (LOT) on “Casing & Liners” pop over view to Metric and Si systems.
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contact@wellcontrol.com.br
New in this update:
– Fix title on the “Import data from other apps” view from “Well Control Methods” to “Kick Tolerance”;
– Set graph ranges to convenient values when importing well data from other apps;
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New in this update:
This app provides a graphical very useful tool for training of Technicians, Drillers, Toolpushers, Drilling Engineers, Students and others professionals of the oil & gas industry to simulate leak-off test and more: hydraulics, hydrostatic, capacities and volumes, ability to select unit systems: Metric, Si, Imperial and Field (mix), very useful for filling well control worksheets.
About the Leak-off Test on drilling operations:
A test to determine the strength or fracture pressure of the open formation, usually conducted immediately after drilling below a new casing shoe.
Initially, pumping fluid into the borehole results in volumetric compression of the drilling mud column and elastic expansion of the casing string plus rock around the borehole. As the pressure in the borehole increases, the leak-off pressure (LOP) is reached when the relationship between pressure increase and volume of fluid pumped deviates from linear. This occurs when fluid begins to diffuse into the formation at a more rapid rate as the rock begins to dilate. Generally, a LOT is a test that finishes immediately after LOP is reached.
Features:
1) Panel with the following parameters: pump pressure, choke pressure, mud pump speed, strokes totalizer, flow rate, mud weight and volume;
2) Intuitive graphical interface: Instruments with pointers to the parameters: pump pressure, choke pressure and open/close hydraulic choke;
3. Graph Options:
– Pressures Pump / Choke and Volume Pumped versus Pumping Time;
– Pressures Pump/ Choke and Pumping Time versus Volume Pumped;
4) Panel with alarms: pump failure, bop failure and bop status;
5) Toolbar with buttons: Data File, Well Config, Restart, Ranges, Set Alarms, Graph Limits, Pause/Continue, Restart, Set BOP, Send by email, about;
6) Set drillstring with drillpipe1, drillpipe 2, heavy-weight, drillcollar1 and drillcollar2;
7) Select floating rig or land rig;
8) Select unit systems: Metric, SI, field1 (imperial) and field2 (mix);
9) set fluid parameters: mud weight, plastic viscosity, yield point and initial gel;
10) Select rheological models: Power or Bingham;
11) Set gradients: absorption and fracture;
12) Set jet nozzles or fixed TFA;
13) Set choke parameters and BOP test pressure;
14) Vertical or Slant Well Type (KOP, TVD and Measured Depth);
15) Set surface circulation equipments (mud pump and lines);
16) Save configuration to data files;
17) Select circulation options: drillpipe -> riser and drillpipe -> choke, Close/Open (Hard shut-in) the well;
18) Reset alarms: pump failure: max pump speed, max pump pressure and max pump power;
19) Register the pressures at the kill speed ;
20) Show schematic of well with drillstring and riser, casing, liner and open hole;
21) Shut-in the well using hard method;
22) Circulation on slow rate (kill speed);
23) Useful for filling of Standardized Kill Sheets for Well Control;
24) Useful for Filling of Previous Recorded Sheets;
25) Analize of the Choke Line effect in Maximum Choke Pressure;
26) Analize of the Effect of porosity and permeability on absorption curve;
27) Simulation of the Leak-Off Test operation and Graphical Analize of the Leak-Off Test
28) Capacities and Volumes calculations;
29) Hydrostatic and critical pressures calculations;
30) Hydraulics calculations;
Basic Exercise:
1. Close BOP and Choke;
2. Set Mud Pump Speed;
3. Monitor the Choke Pressure;
4. When the pressure deviates from linear, stop the mud pump;
5. Wait until the choke pressure stabilize;
6. Tap on graph to obtain data;
7. Open choke to bleed until choke pressure to zero;
Notes:
1. Set fracture gradient > absorption gradient;
2. The Absorption curve is function of porosity and permeability.
3. Tap with finger and moving it in the graph area to obtain Choke Pressure,
Equivalent Density, Equivalent Gradient, Volume Pumped and Pumping Time.
contact@wellcontrol.com.br
*** Awaiting approval by Apple ***
Features:
Well Control Simulator Provides a graphical very useful tool for training of roughnecks, derrickmen, drillers, tool pushers, drilling engineers and students in the well control procedures.
– Interactive System: no pre-set methods;
– Ability to apply methods: Driller’s method, wait and weight, dynamic volumetric and static volumetric (lubricate and bleed);
– Capacities and Volumes;
– Hydraulics and Hydrostatics and critical pressures calculations;
– Behavior of the kick;
– Applied with subsea stack and surface stack;
Kick Model:
The model assumes that the kick starts as a single bubble and migrates upward as a single bubble from the bottom to the surface.
Notes:
– For Simulation of drilling and kick detection, use the another app “Drilling Simulator“.
– For Simulation of leak-off test, use the another app “Leak-Off Test Simulator“;
– About methods to control, use the another app “Well Control Methods“;
These are complementary tools of this simulator;
New in this update 1.2:
Use the app “Drilling Simulator” to drill, detect kick, close the well and wait for stabilization of the pressures:
Import by iCloud to control:
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Apply the Driller’s Method:
Or the Wait and Weight Method:
Other Screenshots:
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
*** Awaiting approval by Apple ***
Features:
Well Control Simulator Provides a graphical very useful tool for training of roughnecks, derrickmen, drillers, tool pushers, drilling engineers and students in the well control procedures.
– Interactive System: no pre-set methods;
– Ability to apply methods: Driller’s method, wait and weight, dynamic volumetric and static volumetric (lubricate and bleed);
– Capacities and Volumes;
– Hydraulics and Hydrostatics and critical pressures calculations;
– Behavior of the kick;
– Applied with subsea stack and surface stack;
Kick Model:
The model assumes that the kick starts as a single bubble and migrates upward as a single bubble from the bottom to the surface.
Notes:
– For Simulation of drilling and kick detection, use the another app “Drilling Simulator“.
– For Simulation of leak-off test, use the another app “Leak-Off Test Simulator“;
– About methods to control, use the another app “Well Control Methods“;
These are complementary tools of this simulator;
New in this update 1.2:
Use the app “Drilling Simulator” to drill, detect kick, close the well and wait for stabilization of the pressures:
Import by iCloud to control:
Apply the Driller’s Method:
Or the Wait and Weight Method:
Other Screenshots
contact@wellcontrol.com.br
This application uses the worksheets based on standardized worksheets of the methods to control oil wells after the occurrence of kick during drilling operations on floating rigs with subsea stack and rigs with surface stack.
This app is great for use in the offices: Toolpusher, drilling engineer, company man, technicians, superintendent and OIM. It can be used on the rig (offices) by drilling staff and also help in the understanding of the methods of well control.
Well Control Worksheets for Methods:
– Driller’s Method
– Wait and Weight Method
– Option to select “Subsea Stack” or “Surface Stack”
– Option to Select Unit Systems: Metric, SI, Imperial and Mix.
– Sharing data file with iCloud.
New in this update:
– Added ability to select units also per parameter
– Improved synchronization between worksheets
– Fix calculations of EMW (LOT) in the Metric and SI unit systems
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contact@wellcontrol.com.br
Well Control 
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