The purpose of the Plan Editor is to generate a series of curve types to form a plan trajectory to one or more target locations. The Plan Editor has three areas: an interactive plan grid, a number of plan method windows for data entry and calculation, and a toolbar. The plan grid is always present and displays all plan sections and enables key parameters of each row to be changed. The plan method windows are used to define individual curves or profiles. The plan method windows appear when you activate one of the method toggles.
The COMPASS software has over 20 planning methods. Some methods are divided into subgroups, which are accessed by using the planning method icons. The planning methods can be divided into
two-dimensional tools, three-dimensional tools, and the Wellpath Optimiser.
Each planning solution consists of rows displayed in the Plan grid. A row is a line in space with a constant dogleg, build, or turn rate. Different planning methods construct a different number of rows. For example:
• Hold adds one row.
• Slant Well adds three rows.
• Thread Targets adds multiple rows.
Rows are added to the grid by using the different planning methods.
Multiple planning methods can be used when constructing a single plan.
The keyboard can be used to insert new sections at any point in the plan, or delete sections no longer required.
Rows in the grid are mathematically linked together by the planning method that was used to construct them. Therefore, deleting a particular row in the grid also deletes all rows linked to that method. To edit a section in the plan, click the relevant row in the grid, and the plan method for that section displays.
Chapter 5: Planning Module
Accessing the Plan Editor
You can access the Plan Editor in the following ways:
• The Plan Editor is automatically displayed after you finish creating a plan using the Plan Design Properties tabs.
• Double-click on an existing plan in the Explorer to open an existing plan.
• Select File > Open > Plan and select the desired plan from the list of existing plans.
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The following graphic depicts the Plan Editor.
Plans can be generated through more than one target.
The plan grid is interactive. White cells are editable. If you change a value, the plan recalculates.
Select a Plan method.
Different methods can be combined to form a wellpath through multiple targets.
When a Plan method is selected, the Plan Method window displays the inputs required to calculate sections of that method.
When values have been entered for the plan method, click Calculate to generate a trajectory.
Some plan methods have submethod buttons.
Use the Planned Wellpath tab to view survey data generated from the plan.
Use the scroll arrows to adjust data in preset increments.
Chapter 5: Planning Module
Using the Plan Editor Toolbar
The planning toolbar is located at the top of the Plan Editor. Several plan options are available from the toolbar:
• Save As and Save – Save this plan by another name.
• Undo and Redo – Restore the last plan calculation.
• Plan Set-up – Edit the plan detail and tie-on information.
• Import Files – Import plan data from the Clipboard or a file.
• Thread Targets – Construct a trajectory through several targets.
• Apply Walk – Apply azimuth drift where expected in rotary drilling.
• Interpolate – Interpolate between two survey data points.
• Optimize Plan – Optimize a plan for torque/drag, construct drilling limits plots, or evaluate redrill options on idle wells.
• Projection Ahead – Quick calculation of vector to hit a target.
• Survey Annotations – Access the Annotations dialog box.
Annotations are comments on the Survey/Plan that do not fit into the category of Casings or Formation Tops. Examples of possible use of annotations include top of fish, sidetrack point, MWD Check Shot, and Final Depth (TD). Annotations may be added to wall plots and reports. Predefined auto-annotations can also be added to the plan.
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• Create Target – Create a target from a row of plan data. Highlight the row, click Create Target, and the target is created and added to the File > Properties > Project > Targets list.
Adding a Plan Section
To add a plan section:
1. Select the last empty line in the grid, and then select a Planning Method option.
2. Fill in the entry fields that are displayed in the Plan Method window section of the Plan Editor dialog box.
3. Click Calculate to compute the results.
4. Click the next line in the grid to accept the results and start the next plan section or click Undo to reject the calculations and close the curve data entry fields.
Deleting a Plan Section
To delete a plan section:
1. Click on a row within the plan section you want to delete.
2. Press Delete.
Incremental Measured Depths
The planning algorithms remember incremental measured depths, rather than absolute measured depths. For example, a plan to a target has a rathole of 300 ft; but then the target was moved and the plan angle was changed. The plan would keep the 300 ft rathole even though the final TD changes.
Deleting a Plan Section
You cannot delete individual rows of a plan section. You must delete the entire plan section.
Chapter 5: Planning Module