CT Annulus Volume
Calculations:
Calculations
Vol,
bbl/ft
From (ft)
To (ft)
Capacity
(bbl)
0
9000
101.988
9000
14000
57.940516
2" CT x 4.5"
Annulus
2" CT x 4.5"
Annulus
0.01133
2
0.01133
2
3.5" tubing
0.00869
6
14113
14238
1.087
2" CT x 4.5"
Annulus
0.01133
2
14238
18000
42.630984
Recommend
ed Fluid
interval
Water
ER Lubricant
Wellbore Vol with CT in well upto
18000’ (bbl)
ER Lubricant
203.160875
Steps:
•
Station CT@ 14113’
•
Mix 102 bbls of Friction reducer solution @ ratio of EasyReach lubricant/ Fresh Water as 20/980.
•
Fill CT with 43 bbls Easyreach lubricant solution and displace it to CT end with water.
•
Pump in CT/tubing annulus with 150 bbls of water first @ highest rate with pressure not
exceeding 3250 psi, then Pump in CT/Tubing annulus 60 bbls of Easyreach lubricant solution
followed by 101 bbl of water to push Easyreach lubricant solution in the interval 11000 ft to
14238 ft.
•
Continue RIH CT at controlled speed (+/-50 ft/min) while pumping Easyreach lubricant solution
at 0.5-0.6 bpm with the well shut in. Reduce pumping rate proportionally to the running speed if
high speed is not maintainable.
•
Once the CT passes last lock up depth, continue to monitor weight closely and perform pull test
if required or continue RIH to TD with Hydrolpull if no weight fluctuation observed.