Well Planning Information & Worksheet
S-CURVE WELLS

Creating a Two-Dimensional S-Curve Well Plan has never been easier. Follow the steps below to create the curve for an S-Curve well profile using the PathPlanner Well Planning Program from Onscreen Software Solutions

Step 1: Describe The Ending Point of the Curve
Enter the required data below to describe the ending point of your curve:

  Horiz. Displacement:   ____________

  Azimuth Bearing:   ________________

  Maximum Allowable
  Vertical Displacement:  ___________
  

We can ignore the target TVD for now. First we will design the curve, and later we will adjust it to fit our required target depth. But since we are in the process of entering data:

  Target TVD:        ________________

Step 2: Start the Program
From PathTracker's "Tools" Menu, select "PathPlanner Well Planning Program". Enter data for the well description and click "OK".

Step 3: Design The Curve

From the "Calculators" menu, select "Curve Displacement".Click on the "Add 2nd Curve" button to open a second curve. Click on the "Add Tangent" button to open the tangent section inputs. Adjust the starting angle (inclination) to be the same as the angle of the last segment of your current plan (the "Apply" feature will not work if these angles do not match). Enter the End Angle for your curve and adjust the first and second build rates, and the tangent angle and length until you have acheived your desired horizontal section. Verify that the TVD required does not exceed the the maximum TVD you have alloted for the curve. If it does, try increasing the build rates or tangent angle to readjust your curve.

Record your information and click "Apply" to add these curves to your plan.

 Starting Angle: __________

 1st Build Rate: __________

 Tangent Angle:  __________
 
 Tangent Length: __________
   
 2nd Build Rate: __________
	 
 Ending Angle:   __________

Step 4: Adjust the TVD for Our Target
From the "Edit" menu, select "Adjust All TVD's for New Final TVD". Enter the true vertical depth for our target.

Step 5: Complete the Plan to TD
From the "Add Segment" menu, select other segments to finish planning the well. Enter the depth at which you wish to terminate the well.

   Total Depth(TD): __________

Step 6: Add Interpolation Points for Formation Tops, Casing Points, etc.
If you want your plan to clearly identify formation tops or other points in the well, we need to add interpolation points to mark them. From the "Edit" menu, select "Add Interpolation Point" and select either "Measured Depth " or "True Vertical Depth". Enter the depth and the point will be added. Repeat this step as often as necessary.

 Point 1:________MD/TVD
 
 Point 2:________MD/TVD
 
 Point 3:________MD/TVD
 
 Point 4:________MD/TVD
 
 Point 5:________MD/TVD
 
 Point 6:________MD/TVD
 
 Point 7:________MD/TVD
 
 Point 8:________MD/TVD
 
 Point 9:________MD/TVD

Step 7: Create a Survey File
Now we need to interpolate the points in between our segment starting and end points so that we can obtain an accurate picture of our plan. From the "File" menu, select "Create Survey File". The default interval is 30 metres or 100 feet. You can change this to any interval you want. A zero (0) value will create a file with the points in the segment plan only.

Step 8: Add Text Annotations to the Planned Survey
If you created interpolation points in Step 10, you may want to add lines of text to your printouts to identify these points. From the "Edit" menu, select "Edit Text Annotations", or just click on the "Text" button. You can now enter the depths from Step 10, and type in any associated text to display at that point. Note: Text only displays on print outs when "Show Annotations" on the Print Window is checked.

THAT'S IT! YOU'VE CREATED AN S-CURVE. You can now print your plan or view it with any of PathTracker's graph features.