the rig has to be moved during the defrosting period (March-April), gravel or slabs must be used for the road.
The mast will have been inspected after laying down on the previous location to avoid unnecessary delays if repairs are required.
The cellar should have been constructed and the 36” phase drilled, with the 30” set @ 10-12 m below ground level (and possibly the 20” pre-set). Confirm data with Superintendent.
Check that the conductor is vertical, by means of an electronic laser level device. If the conductor is misaligned, the position of the rig can be adjusted accordingly.
Check that the height and connector of the 30” conductor in the cellar and check compatibility with the riser.
Note: Fill in the Elevation reference sheet. Send to Drilling Engineer.
Check that rig is correctly aligned over the well in both planes. Take photographs for future reference. Inform Drilling Superintendent in case of misalignment greater than 2in.
Note: This is of critical importance when using the FMC wellhead.
UGK commissioning. Confirm Drilling Contractor has notified UGK and all necessary documentation is on site.
Note: If the Well Design/Project has not been approved by UGK yet, it is essential to have a protocol linking the well to another similar well already approved. The linking document normally gives the possibility to drill to the top of the reservoir only. Check with the Operations Drilling Engineer if unsure.
After the UGK commissioning has been completed, inspect the rig and complete the rig acceptance checklist. Send to Drilling Superintendent.
Check that the following documents are available at the rigsite:
Well Specific Drilling Program (WSDP),
Well Construction Guidelines (this document)
Design Project as submitted to authorities, in both English and Russian,
Mud logs from relevant offset wells
Confirm with Superintendent if location survey is required because of subsidence. The survey to be done by E&P will be repeated if misalignment is detected or after heavy loading operations and rainfall (E&P to take core for analysis if required).
Check that all required drilling and mud services equipment are operational. Ensure that all sensors, flow-sensors, gas detection equipment (Hydrocarbon and H2S) are operational.
Ensure that all solids control equipment and waste management systems are fully operational and that there are no leakages on them.
Ensure that mud pits are aligned to avoid vibration on the pump modules and to reduce the hydrostatic on the centrifugal pump suction pit.
Check hydraulics calculations and install appropriate liners on mud pump. Set and pressure test relief valves.
Ensure the rig has a sufficient inventory of spare of liners, piston head and shaker screens. Drilling Contractor to provide list.
Install and test cellar pump.
Check casing stabber platform.
Check Communications and network setup.
Check/test rig gas alarms and general site alarms document it on the Daily Drilling report.
Ensure enough LCM material is available.
Check that the 20” circulating head is at the rigsite.
Tally and drift the 20” casing before spud so the final TD can be based on the tally, using a +/- 3 m rathole.
Install the stop collars for the casing on the pipe rack (one stop collar per joint). Install the centraliser across the stop collar.
Make up and stand back enough stands of HWDP/ DP for cement stinger and drilling to TD.
The 20 ¾” Casing Head Housing will be delivered with a 20” casing pup installed below and made up to a running tool with x-over to DP on top. Spare ‘O’-Rings should be available.
Make up casing head housing assembly on a DP joint and lay down. Check the space out to have a tool joint above the RT when the CCH is landed.
Backup emergency Sliplock 20 ¾” CHH to be readily available.
Inspect all connections on the 20 ¾” CHH assembly to ensure that these are free from damage.
At least two days before spud, perform pre-spud meeting at the rig site with the drilling crew and all services company personnel. Confirm with Operations Engineer.
Prepare riser and lay down on pipe rack.
The 20” stab-in float shoe should be pre-installed on a joint of casing at the rig site or warehouse. Confirm with Superintendent.
Cement stinger and spare o-ring to be available. Check ID receptacle in casing shoe to ensure cement stinger is correct size.
Check connection on cement stinger is compatible with DP in use. Plan to space out to allow a crossover to 1502 to be connected at an acceptable height on the rig floor during cementation.
Check if 5 ½” drill pipe pup joint and correct crossovers are available for making up BHA.
Lay out BHA on pipe rack. Measure dimensions of all components, Stabilisers will be gauged in and out of the hole and reported in the DDR. Plan to run assembly to minimise handling heavy collars to drill out the 30” shoe track. Ensure only certified slings are used.