Liner weight and displacement graphs to be prepared.
Pip tags to be available prior to running liner.
Back up shoe, float and landing collars should be available on location.
Make sure to drift DP in the derrick during the running of the liner in order to eliminate the possibility of having any debris as well as plugging the pipe.
Ensure Gauge the OD of the liner drift provided by Weatherford and confirm with the Operations Engineer that the dimension is acceptable. OD certification should not be older than 12 months.
Randomly selected ten joints of liner should be internally callipered to accurately determine internal volumes. Use the average ID to calculate displacement volumes. Obtain an accurate measurement of mud pump efficiency for pumping cement.
Shoe jt, float collar jt, single joint and landing collar joint to be laid out on top row of liner.
Confirm reamer shoe design with Operations Engineer.
The displacement will be made with the cementing pumps, using a dedicated tank. Ensure pump is fully charged prior to displacement and total volume recorded.
Mud loggers to calibrate pit volume indicators and ensure accurate records of pit volumes are maintained throughout liner running and cementation.
Liner cementing head on location. Confirm with Operations Engineer the following:
Correct size of pump down plug has been loaded into the Plug Dropping Head Assembly
The phenolic setting ball has already been inserted in the ball dropping sub.
Calculate space out and make up cementing system ensuring there is adequate space for string manipulation. Lay out on catwalk.
Example 7” Liner Running Checklist
Shoe track thread protectors should be cleaned on the deck and used dope free protectors prior to bringing them on the rig floor.
M/U shoe track and function test floats. Thread lock all joints
RIH liner as per tally. Fill every 10 jts.
Pick up the Liner Hanger assembly very carefully to avoid right hand torque.and make up to the 7” liner. Leaving rotary slips set on liner joint pick up approximately 1m to check setting tool and all connections are properly made-up.
Check number and rating of shear pins.
Confirm back up 1 ½” ball available.
Fill PBR with clean brine or fresh water before running in hole.
Pull slips and lower assembly through rotary and set DP slips on the setting tool extension at the top of the running tool.
Pick-up Liner and circulate 120% of the liner content, check for leaks on the Liner Hanger assembly with the assembly above the rotary table. Do not exceed maximum circulating pressure 900psi (62 bar).
Record pick-up and slack-off weight of liner. Report in DDR.
Record up and down weights
Lock rotary table
RIH liner on DP (release block lock).
When making up shoe track, use a chain tong first then torque up with power tong, this minimizes potential thread damage to the tubulars.
Running speed 2-3 min per stand.
Fill string every 5 stands. No circulation.
Apply dope sparingly to pin connection only with paint brush.
Do not ‘bump’ against back up tong
No left hand rotation of string – this can release the running tool
At 7” shoe:
Circulate Liner + DP contents @ 70 spm (absolute max 5bbls/min). Do not exceed 900 psi pressure.
Closely monitor and record any static and dynamic losses.
Record up and down weights.
BOT engineer to record all parameters.
Continue RIH liner through open hole. BOT Engineer to be on drill floor.
If liner takes weight stop and call Drilling Supervisor.
Wash and tag bottom. Continue to circulate while spacing out for cement head ion Tag with no more than 10 tonnes.
Record up and down weights. Pick up to neutral weight + 2m and rotate string at 20-30rpm.
Mark pipe and note torque readings.
Space out 0.5m off bottom and make up cement head.
Ensure swivel is used on cement hose and it is properly supported.
Circulate bottoms up whilst rotating string. Do not exceed 900 psi.