Before running the 13-3/8” casing, make sure that the rig is correctly aligned with the rotary table centred over the wellhead (note: the DP will now be racked back so the weight distribution from when drilling will have changed). This is to prevent damaging the wellhead at seal area. This can be done when jetting wellhead.
Check all equipment is on-site and in good condition.
Gauge the OD of the casing drift provided by Weatherford and confirm with the Operations Engineer that the dimension is acceptable. OD certification should not be older than 12 months.
Check Weatherford Torque graphs if they are correct. Ensure no debris is inside casing joints.
Ensure that backup’s of shoe, float collar, couplings and plus are available on location.
Ensure the 13-3/8” float equipment is a PDC drillable.
Check if the casing shoe has been supplied in auto-fill mode and ensure test procedure is applied.
Ensure that the spiral type casing centralizers are used in order to not causing any damage to wellhead.
Ensure that the mandrel casing hanger and running tool are assembled prior to sending out to the rig.
If Overdrive system not utilised then the fill up circulating tool will be used to fill up the casing while RIH and in the event it becomes necessary to circulate the string down.
Ensure that the service history of the circulating packer is sent with the tool and it has been serviced and checked to be in good condition and of correct size. Back up circulating tool element is to be available on location and should be in good working condition.
Check the Klepo’s and Stabbing guides fit the pin & box ends.
Make sure the snub line is the correct size and length and certified.
Re-check all safety features are functioning on power tong.
Prepare, clean, drift and dope on the pipe rack all the joints which are to be run.
Remove casing thread protectors and clean pin and box ends thoroughly. This can be done with a light concentration of Baraklean and water using a pressure washer.
Use API modified thread compound compliant with API 5A3.
Centralizers will be pre-installed with stop collars on the pipe racks as per tally.
Ensure that the centralisers have the necessary clearance from the Flush Mounted Slip’s.
Check to see if we have the correct nails (ordinary & spiral) for the centralizers.
Ensure that various length casing pup joints are available for space out.
Ensure maximum pull information is available at the rig floor.
When slinging the single joint elevators position them through the pad eyes on the Varco elevators
Ensure that the casing tally is prepared well in advance and all joints crosschecked and confirmed on pipe racks before casing running job is started. 2 independent measurements must be made.
Ensure the correct Pup joints for positioning the Fill up tool to be as close as practicable as possible to the elevators in order to allow circulating down any potential tight spots.
When rigging up the Casing equipment make sure the Hawk jaw tong has been laid out, and then bring the Casing tong up first (before the bails), this way the tong & computer can be set up and calibrated while the Fill up tool & the auto handling equipment is installed.
Make sure that a conventional circulating swage will be available on the rig floor at all times.
Ensure a cementing manifold is prepared and made up to the wellhead. This will allow returns to be taken to shakers or straight to the waste pit from the wellhead.
Rabbit/drift all casing and strap. Ensure that sufficient casing has been delivered to allow for 10% excess. Calliper the ID of 10% of randomly chosen joints and use the average for displacement purposes. Ensure to calliper each joint in both NS and EW directions. Obtain an accurate measure of mud pump efficiency for pumping cement. Pump efficiency recorded on previous 13-3/8” cement jobs should be referenced for comparison.
Once the casing has been tallied, a spreadsheet of displacement values against running number and hook weights should be prepared and available on the drill floor.
Before running the casing, calculate the swab and surge pressures (ensure that the mud logger is competent to run the casing swab and surge pressure calculations).
Select the most suitable running speed for the hole conditions.
If possible have the FMS control panel and any other equipment on the rig floor before the start of the rig up (Rig floor space a factor)
Make sure the air hose for the Varco’s are long enough. Tie/Tape off the air supply hose for the Varco’s along the bail arms. Coil the hose is necessary.
When slinging the single joint elevators position them through the pad eyes on the Varco elevators.
JamPro unit to be checked before job as well as confirming pipe details.
Mobile telephone signals cause interference with the JAM unit – ensure mobile telephones are not present on the rig floor as per Company policy.
Make sure the snub line is the correct size and length and certified.
Lift all joints of casing to the floor using the Rig Floor tugger and rest in the V-door.
Check there is a C-Plate for the Fill up Tool.
Connect Varco type elevators to the bail arms positioning the air operating switch to the side of the stabbing board.
Have a work stand prepared for operating the tong as well as when making up the Float Collar (13-3/8”).
When running the job every half hour pour some oil in between the slips and the Varco body. On the fly grease the FMS & Varco elevators (preferably every 25-30 joints).
A casing drag chart will be provided by the Operations engineer.
After making up the Shoe track, fill up every joint as we lower it down, ensure that the joint never overflows. Stop pumping once the OBM is at the same level as the previous coupling.
Discuss with mud engineer and mud logging engineer how losses while running will be monitored.
22 ft long bail arms will be sent to rig site to allow / facilitate the utilisation of the circulating packer.
Ensure that back-up is available at the rig site for all shoe track components - including spare joints with couplings backed-off and pre-thread locked plus a spare shoe joint and float collar joint pre-assembled, plus spare loose couplings.
The first 4 connections must be thread locked.
The Drilling Supervisor must specify in his Instructions to the Drilling Contractor the slip to slip running speed which is to be used.
The Drilling Supervisor must ensure that as the casing is being run the actual string weight is plotted against the theoretical profile at the rig floor and cross checked by the mud logger. Any deviation should be reported immediately to the Drilling Supervisor.
The mud engineer is to monitor displacement for losses.
Wash down last joint. Leave 3m rat hole. Note down final landing weight in Daily Drilling Report.
Check casing left on rack against tally when planned casing setting depth has been reached. Accountable persons will be the DSV and the Toolpusher who will independently verify the correct casing setting depth.
Ensure mud pump suction strainers are checked and cleaned prior to cementing, to achieve maximum pump efficiency during displacement.
The casing string will be supported in the elevators during the cement job.
Circulate at least 150% of the casing volume. Ensure to calculate the equivalent flow rate to achieve drilling ECD. Stage up the pump rates in increments until the ECD when drilling is reached.