Drilling Cost for iPhone and iPod Touch, release 2.1, submitted to iTunes App Store

Drilling Cost for iPhone and iPod Touch

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On the App Store

New in this release:

– iOS5 Tested;
– Improvements with data input: now there is no need to tap [done] for each entry, only on the last text field.
– Autosave for Unit Length, Bit Cost and Rig Cost;
– Add new features: Single Calc view, Graph Options View and Datasheet View;
– Improved the feature save/load data file;

The Drilling Cost provides to the drillers, toolpushers, drilling engineers, students and other professionals in the petroleum industry a productivity tool helpful in drilling operation to calculate the drilling cost per length unit drilled, analize of drill bit performance and to use in planning phase of oil wells.

Formulas: 

Drilling Cost = (Bit Cost + Rig Cost x (Drilling Time + Trip Time)) ÷ (Length Drilled)

Drilling Cost => drilling cost $ per length unit ($/ft, $/m)
Bit Cost => bit cost, $
Rig Cost => rig cost per hour, $ / hour
Drilling Time => total drilling time, hour
Trip Time => trip time, hour
Length Drilled => total length drilled by drill bit, ft or m

The Advanced Feature:

This application provides an advanced feature that is the modeling of data Drilling Cost vs. Drilling Time using quadratic regression. The minimum point of the parable may correspond to the operation time of the drill bit, where will occur the minimum cost. The more the R squared is close to 1, the result will be better.

Quadratic regressions:

1) Drilling Cost = c + b (LD) + a (LD)*(LD), LD = total Length Drilled by the dril bit
2) Drilling Cost = c + b (DT) + a (DT)*(DT), DT = total drilling time by the drill bit

Multiple Files:

The user can work with multiple files that must correspond to the drill bits used in each phase of drilling.

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contact@wellcontrol.com.br

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Well Control Worksheets for iPad now available on the iTunes App Store

Well Control Worksheets for iPad

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On iTunes App Store

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.

It can be applied on the field 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, FIELD1 (Imperial) and FIELD2.

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contact@wellcontrol.com.br

http://www.wellcontrol.com.br

Leak-Off Test Simulator for iPhone and iPod Touch 1.0 submitted to the iTunes App Store

Leak-Off Test Simulator for iPhone and iPod Touch 

iLOTSim_512.png Awaiting for Approval by Apple

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.

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 drillpipe, 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;
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) Analyze of the Choke Line effect in Maximum Choke Pressure;
26) Analyze 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.

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iLOTSim_10_05.PNG  iLOTSim_10_08.PNG

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contact@wellcontrol.com.br

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Directional Drilling Survey for iPad is now available on the iTunes App Store

Directional Drilling Survey for iPad

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On iTunes App Store: http://itunes.apple.com/app/directional-drilling-survey/id426718723?mt=8

Description

The Directional Drilling Survey provides the control of directional drilling of oil wells with calculations and plotting of project data and survey data in vertical and plan views to help technicians, drillers, toolspushers and engineers of petroleum industry.

Features:
1. Well Project Definition;
2. Ability to work with multiple data files;
3. Directional Survey: Edit, Add, Insert and Remove Survey Data;
4. Calculations Methods:
– Tangential
– Balanced Tangential
– Minimum Curvature
– Radius of Curvature
– Angle Averaging
5. Projections in vertical view and plan view;
6. Ability to print and to send reports by email;
7. Survey Data Calculations in all methods
simultaneously;
8. Formulas of Methods;
9. Ability to work with length units: foot and meter;
10. Vertical Section View in portrait and Plan View in landscape.

Screenshots:

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contact@wellcontrol.com.br

http://www.wellcontrol.com.br

Update for Kick Tolerance for iPad, release 2.0, submitted to iTunes App Store

Kick Tolerance for iPad

A new update do App Kick Tolerance for iPad, release 2.0, was submitted today to iTunes App Store. We awaiting for approval by Apple.

The Kick Tolerance provides to the drilling engineers, chemists, students and other professionals in the petroleum industry a productivity tool helpful in drilling operation (well control) and planning phase of oil wells.

This application deals with two concepts: 

1- Kick Tolerance as Maximum Poros Gradient;
2- Kick Tolerance as Maximum Kick Volume.

Both with graphical analyses.

– Included the formulas and Definitions;
– Ability to work with multiple files;
– Pop-up view to alert user about invalid values;

New Features:

1) Ability to PRINT screnshots and to SEND by email;
2) Included toolbar in all views;
3) improvements of performance after revision of code;
4) Bugs fixed;

5) Tested with iOS 4.2.1, 4.3 and 4.3.1

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View in App Store

SCREENSHOTS:

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contact@wellcontrol.com.br

http://www.wellcontrol.com.br

Driller’s Method – formulas used in application WCMethods for iPhone, iPad and Mac

Well Control Methods for iPhone and iPod Touch – WCMethods

WCM1_30_icon

 

Download on the App Store

 

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

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 (US Unit) and field2 (mix) or per parameter;
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;

The Driller’s Method

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 / (0.052 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 friction loss
Circulate out the influx to surface ICP Bit to Surface
Circulate to fill drill string with kill mud SIDPP SIDPP – Choke line friction loss Surface to Bit
Circulate to fill annular with kill mud FCP Bit to Surface

Formulas used in calculations of this method:

  WCMethods_Formulas1

Screenshot from WCMethods:

WCM1_DM_01

WCM1_DM_02

Example in Well Control Simulator:

Screenshot from Well Control Simulator for iPhone and iPod Touch:

Wells with Surface Stack

Driller’s Method

surfacedmxstk2

 

Wait and Weight Method (Engineer’s Method)

surfacewwxstk2

Wells with Subsea Stack

Driller’s Method

subseadmxstk2

Wait and Weight Method (Engineer’s Method)

subseawwxstk2

 

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
 

 

Well Control Methods HD (for iPad):

WCM2_DM_04
WCM2_DM_01
WCM2_DM_02
WCM2_DM_03

Well Control Methods for Mac:

WCM3_DM_01
WCM3_DM_02
WCM3_DM_03
WCM3_DM_04

Visit our Portfolio on the App Store for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.

portfolio

Visit our website for more Oil & Gas apps for iPhone, iPod Touch, iPad and Mac OS X.

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Drilling Hydraulics for iPhone, iPod touch, and iPad on the iTunes

Drilling Hydraulics Lite

Drilling Hydraulics for iPhone, iPod touch, and iPad on the iTunes…

itunes.apple.com

Learn more, read reviews, and download Drilling Hydraulics by Cafm on the iTunes App Store.

The Drilling Hydraulics provides the driller, tool pushers, engineers, chemists, students and other professionals in the petroleum industry a productivity tool helpful in drilling of oil wells for hydraulics calculations, optimization of the penetration rate and can help on the decision on selection of bit nozzles.

Resources available:

1. Defining the parameters of the well, drill string, drill bit, mud (fluid), mud pumps, circulation lines on surface, diameter and coefficient of choke and more;
2. Options outstanding: Injecting into the drill string with the return flowline or by injecting the kill line to return the choke;
3. Options wells in floating units or in drilling land rigs;
4. Use of two mud pumps in parallel;
5. Choice of rheological models (Bingham and Power);
6. Calculations of the hydraulic drill bit and the system by friction;
7. Frictional losses in all sections, also showing the length, hydrostatic and Reynolds number in each section;
8. Calculation of the ECD on bottom hole and the casing shoe;
9. Hydrostatic calculations at the bottom hole and the casing shoe;
10. Calculation of bottoms up time;
11. Pressure x Flow chart with touchscreen and rotation (portrait / landscape) and scale definition;
12. Selecting the system of units;
13. Saves the data to reload later;

and more…

Formulas used in rheological models:

Power-law Model: API Recommended Practice 13D – Rheology and hydraulics of oil-well drilling fluids, 2009-10-05

Bingham Model: IADC Drilling Manual, eBook Version (V.11), 2000