Cementing Job - Preparation Checklists

Checklist for Drilling Supervisor
#	*Time*	*Description*	*Post-job remarks*
1	5d	Cement proposal checked/acceptable.
2	3d	Cementer called out. Competence verified through the Contractor Base Manager.
3	2d	Proposal approved by ODE/1X.
4	6h	Tasks appointed; Scenario ready.
5	6h	Diagram of all lines / valves OK and checked.
6	6h	Annotated execution flow chart ready.
7	1h	Hole OK. (Clean, losses cured, overbalance OK).
8	1h	Mud OK (Rheology in spec., mud mobility in annulus maximised).
9	1h	Mixwater and spacer checklist OK.
10	1h	Rig Eqt. OK. (Compressor, Transfer-and Mud Pumps, Silo's)
11	1h	Cement Eqt OK. (Cmt Unit, Cmt head, Surface/ Lines)
12	1h	Plugs and launcher OK (plugs, P test, Ids of cocks, XO, DP, etc. for liner).
13	1h	Safety Eqt OK. (Dusk mask, Goggles, Earplugs, Gloves, Eye Wash, Fire Fighting)
14	1h	All involved Personnel briefed; 'What if' discussed with key personnel.
15	1h	Check lines/valves (tanks, cmt unit, surface (P test), return)
16	5d	Send samples of water, cement and additives to lab . Label and telex.
17	5d	Send cementation form to lab. Preliminary recipe received.
18	2d	Received recipe for cement and weighted spacer from lab.
19	2d	Prepare cementation programme.
20	1d	Update cement programme with caliper and temperature from logs. The Lab must be informed of any variation from estimated temperature.
21	1d	Compare job calculations with those of Cementer.
22	2h	Perform circulation test. Establish pressure at bump rate.
23	1h	Dust mask, gloves and ear and eyes protection, eye wash.

Checklist for Mud Engineer
#	*Time*	*Description*	*Post-job remarks*
1	1d	Fill mixing tank with water to required level and check chlorides <400 ppm.
3	1d	Check quantity of additives as they are added to tank. Record quantity and sequence.
4	1d	Record level of mix water tank after adding additives
5	1d	Perform bench test with mix water with representative cement sample.
6	2h	Check that the mud rheology is within specifications of the Well Programme.
7	2h	Calibrate time gradient with pressurised mud balance plus back-up standard mud balance.
8	1h	Check level of mix water tank prior to cementing for any evidence of contamination.
9	1h	Water bath set at correct temperature.

Checklist for Rig Equipment by Drilling Contractor
#	*Time*	*Description*	*Post-job remarks*
*Air Compressor*
1.		Power end.
2.		Pressure.
3.		Volume.
4.		"Dryness".
5.		Relief valve.
6.		No leaks in system (last test date/pressure).
*Transfer pump*
1.		Impeller check (dry run).
2.		Leaking shaft seals (false air).
3.		Electrical switches.
4.		Lines flushed.
*Mud pumps*
1.		Relief valve (pressure test).
2.		Control power supply, switches.
3.		Pistons OK (pre job cleaned).
4.		Liners OK (pre job cleaned).
5.		Valves OK (pre job cleaned).
6.		Suction lines/strainers (pre job cleaned).
*Tanks*
1.		Line up to cement unit OK.
2.		No leaks on tank or valves.
3.		Level indicators OK.
*Surface lines*
1.		Pressure test .
2.		Size adequate (avoid bottlenecks).
3.		Cement dump line operational.
4.		Ensure that valves in lines are in good condition.
*Manifold*
1.		Hook up as on diagram.
2.		Integrity of the valves OK.
3.		Check lines (flushed/clean).
4.		Contingency lines clean and ready for hook up.
*Return line*
1.		Lined up as per diagram.
2.		No Leakage’s into line from outside
*Cement silo's*
1.		Pre fluff and circulate around.
*Surge tank*
1.		Maintain pressure differential.

Checklist for the Cementer
#	*Time*		*Description*		*Post-job remarks*
*General*
1.			Job calculations done.
2.			Chemicals quality and quantity checked.
3.			Dust mask, gloves and ear, eyes protection; fire extinguisher, eye wash station.
*Pre-Job*
1			Check quantity / appearance of cement and additives
2			Flush lines from mix tank to cement unit with water
*Cementing unit*
1.			Air system - check air cleaner, lubrication, tanks and drain moisture.
2.			Diesel fuel - check level, drain water and sediment from bottom.
3.			Engine oil - check level twice for consistency.
4.			Radiator/heat exchanger - water level.
5.			Fire hose for cooling engine stand-by.
6.			Fan belt - tension, crack or damage.
7.			Transmission oil - check level.
8.			Chain case oil - check level.
9.			Power end oil - check level.
10.			Hydraulic oil - check level.
11.			Plunger oiled - check reservoir tank level and alemite pump.
12.			Gauges - check for operation.
13.			Emergency kill system - check operation.
14.			Pneumatic operating butterfly valves - check operation.
15.			Centrifugal pumps - bearing oil level, packing seal, impeller (dry run),
16.			Output pressure and rate.
17.			Pressure sensor diaphragm - pumped up and leak-free.
18.			Start engine - check starter.
19.			Circulation - check for strainer, suction and discharge lines.
20.			Valves condition.
21.			Over pressure shutdown system - check operation by pressuring.
22.			Pressure test - test unit to 1,000 psi. above expected working pressure.
23.			Sensors - pressure, gradient and flow rate, calibrate if necessary.
*Re-circulating mixer*
1.				Slurry tub - strainer, clean and cement-free.
2.				Knife gate (metering valve) - check operation, grease.
3.				Mixing bowl - correct jets size.
4.				Centrifugal pump - check for output pressure and rate, leaks on seal, wear in bearing
5.				Check operation of cement, water quick shut off valves & recirculating valve.
*Batch Mixer*
1.				Centrifugal pump - check for output pressure and rate, leak on seal, wear in bearing
2.				Paddle - operational.
3.				Electric motor - cables, switches, coil resistivity test.
4.				Chemical hopper - clean, jets good, lines clear.
5.				Dry cement inlet - clean and operational.
*Surge Can*
1.		Check can clean and empty.
2.		Pre fluff through air jets and blow clear through vent line.
3.		Check all gauges, zero the gradient indicator.
4.		Load cell - pumped up, leak-free.
5.		Sight glasses - clean and not cracked.
6.		Hatch cover - hinges, bolts secured, leak-free.
7.		Relief valve - check last serviced and tested.
8.		Check all lines, jets, hoses and check valves.
*Cementing heads*
1.		Correct size - pressure rating (stump test).
2.		Manifold valves - greased, pressure tested.
3.		Plug retainers - greased, operation.
4.		Plug release indicator - operation.
5.		Cross-over - ‘o’ rings, correct thread.
6.		Circulating heads - non welded, pressure rating.
7.		Check quantity/appearance of cement and additives

Most Read

Latest

Cementing Job - Preparation Checklists