Innova Drilling & Intervention
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      • 13.1 - Activity Codes
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    • Appendix A – Software Licensing
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      • Innova Engineering
        • 01 - Innova Engineering Introduction
        • 02 - Innova Engineering Hydraulics
        • 03 - Innova Engineering Torque and Drag
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        • 05 - SCC and Magnetic Interference
        • 06 - SAG Correction
  • Technical Notes
    • High Priority
      • WS 3D Plot Issues
      • Check for Update Function
      • Data Synchronization Feature Update
      • Products & Features and User Permissions Update
      • WS 3D Chart C2C Distance Critical Update
      • Critical update for Anti-Collision in Inc Only Wells
    • Medium Priority
      • Slide Sheet Overwrite Issue
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      • AC Report vs RTAC Dialog
      • Build Turn Planning Method From Vertical
      • Data Fetch Update
      • EDM Import Function Update
      • Excel Report Printing Error
      • Force Layout Reset
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      • Inclination Only IPMs Sensitivity to Zero Inclination
      • IPM File Management
      • Large Well Seeker Database
      • Login Credential Management Change
      • Missing MFPlat.DLL Error
      • Missing MFC140U.DLL Error
      • Missing Microsoft Edge Update
      • Missing SQL Driver
      • Offset Selector - C2C Global Scan
      • Remote Data Fetch Icons Missing
      • Remote Data Fetch Procedural Recommendations
      • Sidetrack Reporting
      • Survey Tool BGS integration
      • Target Line Dip Angle Adjusted For Azimuth Changes
      • Third Party Survey Correction Integration
      • Troubleshooting Anti-Collision
      • Update to Multi-Nudge Projection Dialog
      • Up/Down discrepancies with Target Line Changes in 3D Laterals
      • Unit Set File Format Updated
      • Well Seeker X Failure to Open
      • Well Seeker Pro Import Function Update
      • Well Seeker Pro Change to UD LR Logic at low inclination
      • Error Ellipses at Sidetrack Depth – Well Seeker vs Compass Comparison
      • Well Seeker Pro CRS Updated Functionality
      • Well Seeker Pro - Compass EDM Erroneous Grid Convergence
      • Well Seeker Pro - Real Time Data Exchange Update
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      • Well Seeker Pro - Slide Sheet Update
      • WSP & Innova Portal - Object Validation Feature
      • WSP - Solo Cloud Target Lines Update
      • WSP - Charts & WPC Improvements
      • WS - New Outlook Email Automation Unavailable
      • Well Seeker X: Displays Not Fully Visible
  • Development
    • Innova Cloud Portal (ICP) API
    • Accessing the API for Non-Programmers
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On this page
  • 7.1 – Vertical section
  • 7.2 – Survey Selection
  • 7.3 – Raw Survey Data
  • 7.4 – Survey Corrections
  • 7.5 – Main Survey Grid
  • 7.5.1 - Tortuosity
  • 7.5.2 – Calculated Survey Data
  • 7.5.3 – MSA

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  1. Innova Engineering Manual

7.0 - Surveys Tab

Previous6.0 – Drill String, Well Geometry and Fluids TabNext8.0 – Engineering Parameters Tab

Last updated 3 years ago

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7.1 – Vertical section

This part of the tab allows the user to specify how the vertical section is calculated. The vertical section is displayed on the Section View Plot, so changing these parameters will change how the surveys are displayed. Parameters in this section have no effect on any calculation module.

  • Vertical Section azimuth – The azimuth of the vertical section in degrees

  • Origin NS – The origin NS where the vertical section is calculated from in local co-ordinates. This value is usually zero if the vertical section is calculated from the well head location.

  • Origin EW - The origin EW where the vertical section is calculated from in local co-ordinates. This value is usually zero if the vertical section is calculated from the well head location.

7.2 – Survey Selection

This section defines which surveys are being displayed in the survey grid. There are three options:

  • Actual surveys – Usually surveys taken while drilling

  • Well Plan – Plan or surveys used when the well was in the planning stage

  • Raw surveys – Raw MWD surveys, this page is used for survey corrections such as MSA, SCC and SAG

Note that when modelling a well where only one survey listing or plan is present, it does not matter if the surveys are entered in well plan or actual.

7.3 – Raw Survey Data

The data in this section is used for the Short Collar Correction (SCC) and Multi-Station Analysis (MSA) modules and the well path magnetics calculations. The data in this section only affects surveys in the raw survey grid.

  • Latitude - Required to calculate the SCC Delta Azi in the Magnetic Spacing Calculator

  • HL Ref – The reference magnetic field strength in micro Tesla (µT). This is used for the SCC, MSA and magnetic spacing calculations. This value is usually obtained from the well planning department and a program such as IGRF, BGGM or HDGM.

  • Dip Ref – The reference magnetic dip angle. This is used for the SCC, MSA and magnetic spacing calculations. This value is obtained from the well planning department and a program such as IGRF, BGGM or HDGM.

  • TAC – Total Applied Correction. This is the correction applied to raw survey azimuths and is calculated automatically, depending on the north reference and the value of grid convergence and magnetic declination.

  • Grid – Grid Convergence. This value comes from a well planning package and is the angle between True North and Grid North from True North. Note this is the inverse of Grid correction. The two should not be confused.

  • Dec – Magnetic declination. This is angle from True North to Magnetic North from True North and is used to calculate the TAC and the magnetic azimuth for magnetic interference calculations. This comes from a package such as IGRF or BGGM.

  • North – The north reference the surveys are referenced to. Either true or grid.

  • Inclination to use – This is the inclination used by the program to calculate the TVD, NS, EW, VS, TF, DLS, BR & TR values. The user can choose between Sag Corrected and Raw. This option only affects the raw surveys.

7.4 – Survey Corrections

This section defines parameters for the SAG correction module and the well path magnetic interference module.

  • Offset – The distance from the bit to the MWD directional sensor. This is used for well path magnetic interference calculations and SAG calculations.

  • Inc Start – If inclination range is specified in the Calc. type combo this is the 1st inclination value to be calculated.

  • Inc Stop - – If inclination range is specified in the Calc. type combo this is the last inclination value to be calculated.

  • Inc Step – This is the step value used for the inclination range calculation

  • DLS – The hole curvature used for single and inclination range calculations

  • Inc – The inclination use for single calculation

  • Calc Type –

    • Single – Calculates SAG & BHA Analysis for a single inclination

    • Inc Range – Calculates SAG & BHA Analysis for a range of surveys specified by inc start, stop and step

    • Surveys – Calculates SAG & BHA Analysis for the survey grid selected, curvature is derived from the surveys themselves. If the raw survey grid is selected the corrected inclinations will be displayed in the grid as well as the delta inc.

7.5 – Main Survey Grid

The main survey grid is where all the actual survey data is entered. The survey grid has the same grid controls as all other grids in Innova engineering, with insert delete and copy and paste functions. Surveys can be entered in a number of ways:

  • Manually typing in each survey line by line

  • Importing surveys from an existing file using the survey import tool

  • Copy and pasting data from the clipboard

Depending on the survey selection the survey grid will display different information. If raw surveys are selected and a valid Ref HL and Ref Dip are entered the short collar correction algorithm will automatically run and update every time a change is made to the grid or ref HL and Dip. Surveys which fall out with the QC limits specified will be highlighted in red.

7.5.1 - Tortuosity

This option is only available for Actual and Well Plan surveys and cannot be used with raw surveys. In some situations, it may be necessary to add tortuosity to a well plan or survey to better simulate real life conditions. Well plans which contain purely vertical sections are a typical example of this.

Tortuosity can be applied to the whole wellbore or to one specific section.

  • Apply Tortuosity – Select this box to enable the tortuosity options

  • Sinusoidal – Tortuosity will be applied in the form of a sine wave. The inclination and azimuth vary by an amount equal to: A sin(2Ï€*(∆MD/T)). The maximum dogleg variation is 4A/T

  • Random – The inclination and azimuth vary independently in the range ±A every depth interval T. The maximum dogleg variation is 2A/T.

  • Depth Range – Select this box to enable the Depth Range options. If this is not selected, tortuosity will be applied to the whole survey or plan.

  • Period Length – The length of one cycle of the curve.

  • Start Depth – First depth at which Tortuosity will be applied.

  • End Depth – Last depth at which Tortuosity will be applied.

7.5.2 – Calculated Survey Data

This option is only available for Actual and Well Plan surveys and cannot be used with raw surveys. This section gives a breakdown of the selected surveys every 10ft or meters, and is a representation of the survey data used in the calculations. If tortuosity has been added to the selected survey, then it will be included in this listing.

7.5.3 – MSA

This radio button opens the Multi-Station Analysis dialogue. This is discussed in more detail in Section 4.5.10 - Multi Station Analysis.

Figure 134: Surveys Tab
Figure 135: Vertical section details
Figure 136: Survey Selection
Figure 137: Raw survey details
Figure 138: Survey corrections
Figure 139: Main survey grid
Figure 140: Tortuosity
Figure 141: Calculated Survey Data