Objective Drill 12 1/4″ hole to approx. 140000ft TVDBDF (80ft below Marker). 30 ft above shallowest “overpressurised” zone, allowing ± 50 ft uncertainty on the seismic. Run and set 103/4″ x 9 7/8″ casing 25ft off bottom. General 1. Well path specific 2. TD determination: LWD (GR/Res), ROP, Cuttings, Gas readings, Calcimetry, Biostratigraphy, with most … Drilling programme 12.25″ section HPHT

1. Summary The output from this analysis will become the basis of the functional specifications for a Drill String ITT. The drill string analysis focused on the three most critical sections as follows: the 12 ¼” section drilled vertically from 1900m to about 4550m MDBRT; the 8 ½” section drilled directionally from 4550m to 5140m … Drill Pipe String Design (example)

The information contained in this document is provided as guidelines and should be used in conjunction with the kick procedures flowcharts to deal with specific well control problems. These procedures basically apply to the hp section of an hp well, generally following the setting of the deep intermediate casing, (9.5/8″ – 10.3/4″). 1. INTRODUCTION The … HPHT Drilling Procedures

This article describes the keys elements for preparing a HPHT procedure An offshore Daily Meeting will be held between Company Drilling Supervisor, and service companies to review programme, procedure and safety aspects. The meeting will be conducted by the Company drilling supervisor. Prior to starting specific operations other than routine jobs (i.e. well control, .etc) … HPHT procedures

Drilling fluid volumes (active, reserve and kill mud) The minimum safety stock of mud available on surface prior to and whilst drilling any potential high pressure formation will be: Active mud                                                                     60m3 Reserve mud (same MW and properties active)      160m3 Kill/slug mud             MW= 2.00 SG                            15m3 Total minimum mud on surface                                    250 m3 Mud … Minimum safety stock for HPHT operations

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

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

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

Ensure that a drill pipe strainer is ALWAYS in the pipe when pumping fluids into the well Ensure 4 x ditch magnets are in place for extracting milled cuttings. Prepare sweeps prior to milling operations to aid clean up. Theoretical swarf weight estimation has been noted from whipstock supplier. Consider inclusion of circulation sub in … Whipstock Milling Operation – Best Practices

Checklists for the members of the rig team: OIM, Barge Master, Toolpusher, Driller, Assistant Driller, Derrick Man,  Cement Operator, Mud Engineer, Mud Logger. Download HPHT Checklists – Word Document 1. OIM / Barge Master HPHT Daily Checklist prepare non essential personnel list (to be agreed with company drilling supervisor) hold morning meeting obtain copy of … Rig Team HPHT Checklists