Drilling

Total Flow Area Calculation

This drilling software/ spreadsheet calculates the total flow area for a selection of up to 11 nozzle sizes. Download: 646 – Total Flow Area – TFA – Calculation DD.xls                                                                                                                                                                       

Kick Tolerance Calculation

This drilling software/ spreadsheet calculates the kick tolerance (maximum kick volume before reaching the frac gradient at the shoe). Download: 645 – Kick Tolerance Calculation DD.xls                                                                                                                                                                             

BOP Accumulator Capacity Calculation

This drilling software calculates the BOP accumulator volumes requires to meet API RP43 and IRP 1 requirements. Download: 644 – Accumulator Capacity DD.xls                                                                                                                                                           

Mud Rheology Calculation

This drilling software calculates the values of mud rheology data (PV, YP, etc.) based on the Ɵ300 Ɵ600 or back calculate Ɵ300 Ɵ600 from the PY and YP. Download: 643 – Mud Rheology DD.xls                                                                                                                                                         

Mud Compressibility Calculation

This drilling software calculates the compressibility of a mud in the well, subjected to its own weight and additional stand pipe pressure. Download: 641 – Compressibility Calculation DD.xls                                                                                                                                                                                      

Equivalent Circulating Density (ECD) Calculation

This drilling software calculates the equivalent circulating density of drilling fluid mud, circulated in a well through a drill string. Download: 642 – ECD calculation DD.xls                                                                                                                     

Final / End of Well Report

General information Well and rig summary information plus the date that the well was spudded and abandoned / suspended / handed over to Production. Well schematic showing final well status. Time vs Depth graph, showing planned vs actual performance. Final cost breakdown showing planned vs actual costs by category. A summary of good points from … Final / End of Well Report

Sequence of Operations – Typical Offshore Well

Operations General Practices 1.  Conductors at jacket level   Ensure cap not dropped into conductor   Ensure that no loose items or junk on bottom   Check that conductor not crimped   Mark conductor with red paint in case conductor sinks during production   Take extreme care when POOH in case bit/stabilisers hook up on … Sequence of Operations – Typical Offshore Well

Lost Circulation

Lost Circulation is not always a major problem; however, the procedure below should be followed when losses do occur: 1. Check surface equipment for leaks. If this fails to show any signs of leakage, proceed as usual in such cases, e.g. reduce mud weight if safe to do so. 2. When the level in the … Lost Circulation

Sequence of Operations – Typical Onshore Well

This article describes the sequence of operations and the general practices for a typical onshore well. Operations General Practices 1.  Prepare access road and well lease Minimise environmental impact due to survey/construction – Prepare environmental report and map – Obtain final survey of Lat./Long/Evaluation – Avoid natural drainage routes, significant topographical disruption.  Early contractor site … Sequence of Operations – Typical Onshore Well