drilling

Contingency – Heavy losses It is recommended not to attempt to drill ahead with heavy losses. LCM pills and/or cement plugs should be set as soon as the losses occurred, so that they can be positioned easily on bottom and across the loss zone. If losses are not manageable, the hole can be opened to 16″ Potential Problems – Best Practices

Making connection Wipe the full stand once by pumping out and reaming back down Wipe the bottom single once by pumping out and reaming back down The driller must nominate a responsible person to control the mud pumps (e.g DD, Toolpusher, AD). This person will be responsible for shutting down the pumps quickly in the 12.25″ guidelines for tripping, making connections and back reaming

26” Section – Preparation In addition to the items specified in the pre-spud section, the following preparation and checks will be performed: Pre-cut conductor from ground level. Keep attached in 4 areas with 2” tabs. Install 30” dresser sleeve. Test all mechanical surface equipment (Mud Engineer and solid control personnel to check all Mud equipment Best Practices – Drilling 26″ section

Hold a pre-job safety meeting on BHA make up. Make up 16” BHA as detailed in well specific programme. Ensure a ported float is included in the string. Circulate through the BHA and report weight in DDR. Note: If a conventional motor steering assembly is to be used, ensure that the Directional Driller witnesses the Drilling 16 inch Section – Best Practices

Conduct Pre-section planning meeting between rig and office personnel to discuss section objectives and hazards. Conduct a tool-box talk covering the expected problems outlined above and objectives of the hole section. Prepare 1900m of 5 1/2” DP on racks to P/U and rack back in derrick. Note: 5” HWDP is NOT required for this section Planning 16 inch section – Best Practices

Hold pre-job planning meeting. All equipment to be checked and personnel familiar with the plan. The final cement programme to be issued to the rig and approved by the Drilling Superintendent. Ensure that BJ needs to blow out water from the lines after performing pressure test to avoid frozen the lines if job is carried 7” Liner – Cementing Preparation and Procedure Checklist

8 ½” Section Preparation checklist Drilling Engineer is to organise pre-section meetings at the rig site, with rig and office personnel to discuss section objectives and hazards. Confirm primary and contingency bits (including milled tooth and insert tri-cone) are available on location. Confirm hydraulics and bit nozzle requirements with Operations Engineer and dress bit accordingly. 8.5in Section Drilling – Best Practices

Drilling Engineer to organise pre-section meeting at the rig site, with rig and office personnel to discuss section objectives and hazards. Gauge of all stabilizers will be checked prior to making up the BHA. Prior to RIH, the Drilling contractor will provide an accurate BHA report including serial numbers and dimensions of all the components. 6in Section Drilling – Best Practices

This article presents examples of loadout/ equipment list for the following hole section: 36″, 26″, 17.5″, 12.25″, 8.5″ and 6″ Loadout list, equipment list for 36″ hole section Qty Description – Equipment List – Loadout List Contract   36” and 26” drillbits c/w nozzles Company 1 ea 36” and 26” bitbreakers Drilling Contractor 2 Bit Loadout list for drilling operations

Example of loadout lists for 30″, 20″, 13 3/8″, 9 5/8″ and 7″ Casing,  7″ and 4 1/2″ Liner                                                                               30in Conductor Loadout Check List Item Quantity Back Up Description 1 1 1 Conductor Pipe 30in x 3/4in x 40R-Range 3 2 1 1 Conductor Pipe 30in x 3/4in x 20R – Range 1 3 1 Loadout lists for 30″, 20″, 13 3/8″, 9 5/8″ and 7″ Casing, 7″ and 4 1/2″ Liner