Directional Drilling Survey Calculation Methods And Terminology
The purpose of this article is to understand how to perform various directional drilling survey calculation methods and terminology and we will provide a simple excel spreadsheet to help in your calculations as average angle, the radius of curvature & minimum curvature Directional surveying spreadsheet. Article main headings: 1 The Purpose Directional Drilling Survey Calculations 2 Principles of Surveying 3 Wellbore Surveying 4 How To Determine The Coordinates Of Directional Survey stations 4.1 First, The position of the initial, reference point 4.2 Second, The measured depth (AHD) of the survey station 4.3 Third, The direction (Degrees from North) at the survey station 4.3.1 Azimuth Reference Systems 4.3.1.1 Magnetic North (MN) 4.3.1.2 True (Geographic) North (TN) 4.3.1.3 Grid North (GN) 4.3.2 Conversions 4.3.2.1 Grid Convergence : 4.3.2.2 Declination: 4.4 Fourth, The inclination (Degrees from the vertical) of the wellbore at the survey station 5 Directional Drilling Survey Calculations Methods / Models & Terminology 5.1 Tangential- Most Inaccurate Directional Drilling Survey Calculation Methods & Terminology