Survey program and report
This article describes the data required for a survey program and report.
1 General well data
·well name / ·wellhead co-ordinates (North, East, TVD, latitude and longitude) / ·co-ordinate reference (grid, true or magnetic North, type of grid system) / ·grid convergence and definition (in wording and drawing) / ·declination and definition (in wording and drawing) / ·depth reference / ·target direction / ·casing size and depths / ·pressures / ·temperatures / ·mud properties
2 Gyroscopic survey data
·tie-in point / ·time and date of programme / ·survey interval / ·survey frequency /·running speed (wireline operations) / ·spacing of TOTCO ring, baffle . . .