AFE Designer How To Guide

A guide to the AFE Designer Module within Well Seeker Pro.

1.0 – AFE Designer Introduction

The purpose of this document is to introduce the user to the AFE (Authorisation For Expenditure) Designer module features within Well Seeker Pro. It has been assumed that the user has already installed Well Seeker Pro, has a valid license that gives them access to the AFE Designer features and has a database structure in place ranging from Operator to Planned Wellbore level.

The AFE (Authorisation For Expenditure) Designer is a budgeting and approval tool used during the planning process for a well about to be drilled. Once completed the AFE provides, amongst other things, a budget for the project against which actual expenditure can be compared, along with a detailed breakdown of projected timings for each phase of the proposed scope of work.

The AFE Designer can only be accessed via a plan, by right clicking on a planned well in the database tree and selecting AFE designer via the reporting submenu. This option will be greyed out when accessed from any other level in the database tree.

Export AFE: Exports the AFE, which allows the user to quickly copy the data from one plan to another.

Import AFE: Imports an AFE export file. It is important to note that if the cost codes used in the original export are not available as options in the well which the AFE is being imported into, then the cost section for each activity will remain unpopulated.

Calculate: Runs the AFE calculation and opens the AFE Designer Results dialog.

Apply: Saves any changes made

Close: Closes the well AFE designer dialog

1.1 – AFE Activity Tree

The AFE activity tree is where the user can detail all the relevant activities which make up the scope of work. These can be further broken down to incorporate as much detail as the user requires.

New activities are added by either right clicking on the tree itself and choosing from the available options, or from the radio buttons at the bottom of the window.

Once created, activities can be move around the tree to allow them to be positioned appropriately by using the Move Up / Down options. It is also possible to copy activities and paste them into other areas of the tree, where there is a requirement for a duplicate activity.

Note that it is only possible to copy activities which have properties assigned, and that once an activity has a property assigned to it, it is no longer possible to add a new activity below it in the tree.

1.2 – AFE Probability Type

The user has the option to choose from two different probability types when running the AFE calculation, Probabilistic and Deterministic.

Probabilistic: Uses a Monte Carlo simulation to determine the probability of various outcomes for the well. It will produce the minimum and maximum expected duration of the well along with the probability it will occur.

Deterministic: The length of time taken for an operation is fixed and cannot be changed. The cost and duration of the well is fixed and only a single output will be produced

Correlation Coefficient: The user can enter a value here between 0 and 1. This determines how closely correlated (matched) certain parameters are to one another. A high correlation coefficient (1) means directly correlated. This is where a change in one parameter has a direct impact on another parameter. A correlation coefficient of 0 means that parameters are not correlated at all and will be calculated independently of one another

Outputs: Allows the user to select which P values are displayed in the calculated outputs. The user can choose 3 outputs with P90, P50 and P10 as the defaults.

Monte Carlo Analysis: This option, allows the user to adjust the number of iterations that are used in the probabilistic calculations. 5000 is the default.

1.3 – AFE Tubular Details

DP Jnt Length: DP joint length used by the program when Tripping DP (jnt/hr) is selected in the activity properties

DP Stand Length: DP stand length used by the program when Tripping DP (std/hr) is selected in the activity properties

Casing Jnt Length: Casing joint length used by the program when Tripping CSG (Jnt/hr) is selected in the activity properties

1.4 – AFE Activity

Activity Name: The name of the specific activity. This is the name that will appear in the activity tree.

Activity has Properties: When checked, this option allows the user to enter data in the activity properties, costs and risks sections. It is important to note that when this option is selected, it is no longer possible to add a new activity below this in the activity tree.

Activity Properties: This section allows the user to enter the relevant properties for a given activity. The properties available to enter will vary slightly depending on the probability type selected.

  • Start Depth: Start Depth for the given activity

  • End Depth: End Depth for a given activity. This depth can be shallower than the start depth for activities such as tripping out of hole etc.

  • Time: This dropdown menu gives the user the following choices: ROP, Tripping DP (std/hr), Time, Tripping DP (jnt/hr), Tripping Csg (jnt/hr). The user should select the most appropriate option for the activity.

  • Variable: This dropdown menu allows the user to choose between Variable and Fixed. This option is only available when Probabilistic is selected as the probability type. Variable will allow the user to enter a min, avg and max value; while fixed will only allow the user to enter an avg value.

  • Min: The minimum value associated with the selected time option. This forms part of the Probabilistic calculation and will not be available when Deterministic is selected.

  • Avg: The average value associated with the selected time option. This input is required for both the Probabilistic and Deterministic calculations.

  • Max: The maximum value associated with the selected time option. This forms part of the Probabilistic calculation and will not be available when Deterministic is selected.

1.5 – AFE Costs

When a selected activity has properties, the AFE cost section will be available to populate. Selecting the description or cost code cells will open a dropdown menu where the user can select the appropriate cost. This dropdown list is populated directly from the Cost Codes section associated with the well. New costs can only be added in the cost code section, which can be selected at the well level of the database tree.

1.6 – AFE Risks

When a selected activity has properties, the AFE risks section will be available to populate. Risks are events which could impact the overall time for the selected activity. Risks are only available in the probabilistic model and the time will be calculated based on the probability entered using a distribution based on the min max and avg times.

1.7 – AFE Designer Results

The AFE designer results window gives the user access to all the calculated results data in Chart and Excel format. All the chart outputs and data are available to view and print via the various menu options.

File Menu: Allows the user to exit the results window.

Charts Menu: Allows the user to switch between all the available chart outputs. The selected chart will be displayed in the window. The user can choose from the following options.

  • Time Probability Density Function

  • Cost Probability Density Function

  • Time Cumulative Density Function

  • Cost Cumulative Density Function

  • Depth v Time

  • Cost v Time

  • Time - Interval

  • Time - Cumulative

  • Cost - Interval

  • Cost - Cumulative

The final option available on this list allows the user to show annotations on the depth v time chart.

Excel Documents Menu: Allows the user to print an excel report for any one of the following options.

  • Event Model

  • Detailed Event Breakdown w/Costs

  • Cost Model

  • Time v Depth

  • Time v Cost

  • Time Histogram

  • Cost Histogram

  • Full Report

Chart Settings Menu: From here the user can change the background colour of the charts from black to white.

Report Settings Menu: Allows the user to select which charts and excel documents are included in the full report.

Appendix A – Context Menu

The context menu is available in every plot by right clicking anywhere on the plot. This allows the user to change certain aspects of the plot based on their requirements. The contents of the menu will vary depending upon the chart selected.

Viewing Style – Allows the user to select the desired Chart style

Border Style – Allows the user to select the desired Border style of the chart

Font Size – Allows the user to select the desired font size, which will affect all fonts on the chart including title and axis labels. Large, Medium or Small

Show Legend – Allows the user to toggle the chart legend on and off

Legend Style – Allows the user to select the Legend style. There are 6 options, including Hide Legend

Numeric Precision – Allows the user to select the number of decimal places the numbers in the plots are referenced to. Zero to 3 d.p

Plotting Method – Allows the user to select the way the line is plotted: Point, Line, Bar, Points + Line, Spline Area

Data Shadows – Allows the user to select between off, shadow and 3D

Gradient Styles – Allows the user to select the gradient graphic on a pie chart

Data Labels as – Allows the user to select the labels as a percentage or as the actual value

Group Percentages – User can select the percentage threshold below which a segment in a pie chart will be grouped as other

Grid Options – Allows the user to change the grid options in the chart

Graph and/or Table – Allows the user to view the chart only, table only or both at the same time

Point Label Orientation – Allows the user to select the orientation of the X axis series labels

Include Data Labels – Allows the user to add data labels to the chart

Mark Data Points – Adds the data points relating to the data labels

Undo Zoom – Resets the zoom on the chart. Pressing the Z button has the same effect

Customization Dialog – Opens a dialog that allows the user to chart titles, axis min and max values, fonts, line colour and styles

Maximise – Maximises the chart to fill the screen. Escape button exits this view

Export Dialog – Allows the user to Export the chart using multiple image formats: EMF, WMF, BMP, JPG and PNG. The user has 3 options:

  • Clipboard: exports directly to clipboard, allowing images to be quickly added to word, excel & PowerPoint documents

  • File: Creates an image file of the chart which can be used on its own or imported into any suitable document

  • Printer: Sends the chart to the printer

The user can also choose the relevant Width, Pixels and DPI to use for the export. For Clipboard and File options, Pixels is the only available selection. When Printer is selected, the Millimeters, Inches and Points options become available to select.

X Axis on Top – Moves the labelled X axis from the bottom to the top

Y Axis on Top – Moves the labelled Y axis from the left to the right

Additional X Axis – Adds an additional labelled X axis

Additional Y axis – Adds an additional labelled Y axis

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