Mackenzie Valley Land and Water Board
Transcript of Mackenzie Valley Land and Water Board
Abandonment Program for Paramount Fort Liard F‐36
Well Name: Paramount et al Liard F‐36
Area: 600 10’ N, 1230 15’ W
Location: Latitude: 600 05’ 27”
Longitude: 1230 22’ 00”
UWI: 300F366010123150
WID: 1841
Spud Date: March 3, 1998
Rig Release Date: March 28, 1998 (Suspended drilling for break‐up)
Well Status: Dually‐completed as a Mattson/Fantasque gas producer.
Currently shut‐in
Last Workover March 2006
KB Elevation: 470.3 m
Ground Elevation: 464.8 m
PBTD: 2092 mKB
TD: 2110 mKB
Casing & Cementing
Surface Hole: 311 mm to 502 mKB
Surface Casing: 244.5 mm, 48.07 kg/m, H‐40, ST&C set at 502 mKB.
Cemented with 30 t class 'G' cement plus 2% CaCl2.
3m3 cement returns to surface.
Intermediate Hole: 222 mm to 1494 mKB
Intermediate Casing: 177.8 mm, 34.2 kg/m, J‐55, LT&C set at 1494 mKB.
Cemented with 20t 1:1:2 and 19 t Expandomix+ 0.15% CFL‐3 + 0.3% LTR.
2 m3 cement returns to surface
Main Hole: 156mm to 2110 mKB
Liner: 114.3mm, 17.26kg/m,L‐80, LT&C, set at 2107.59mKB.
Cemented with 15.8t 0:1:0 “G” + 0.4% D‐24 salt gel
Liner top @ 1387.7m
Operational Program:
Note: Preparation, road construction and rig up will be handled by a separate document incorporating
the requirements of the Operations Authorization and supporting documents (Safety Plan,
Environmental Protection Plan, and Emergency Response Plan which are already on file with OROGO).
These documents well be onsite for reference by the site supervisor, along with site specific extracts,
emergency contact numbers etc.
This document focuses on the describing the operations planned for the well.
Overview:
The Fort Liard F‐36 well was drilled in 1998. It was initially completed as a Mattson gas producer (after
an unsuccessful test of the Golata). The Fantasque was subsequently perforated and the well re‐
completed as a dual producer (tubing and annulus) – both zones were sweet gas. Gas production up the
annulus from the Fantasque was insufficient to overcome associated water production and in 2005 the
well was recompleted again using a dual tubing configuration. Gas production has declined and the well
was shut‐in in 2007. The field is shut‐in with some of the facilities decommissioned. The purpose of this
program is to permanently abandon the depleted Mattson and Fantasque zones, and the cut and cap
the well.
A wireline plug was dropped on top of the packer @ 1383mKB in 2005 and it appears to have fallen
beside the slick‐joint. Attempts to retrieve it or to connect to the packer were not successful at that
time. Thus it is not possible to latch onto the connector and retrieve the packer. Similarly, the presence
of the loose plug on top of the packer makes it impractical to mill around the outside of the packer (a
difficult operation with a permanent packer in any case). For this reason, neither the liner top at
1387mKB nor the lower perforations are accessible to be isolated with bridge plugs and cement.
Paramount therefore proposes the abandon the lower zone (Mattson – top perforation 1582) by
removing the current tubing strings, setting a permanent bridge plug immediately above the existing
packer at 1383 and capping this with cement. While this is significantly above the existing perforations
at 1582m, previous logs have indicated that there are no productive zones between the current
perforations and the Fantasque zone (perforations 1344‐1347mKB). Because the subject packer is so
close to the Fantasque perforations, Paramount proposes to use one extended cement plug to cap the
bridge plug and to cover and isolate the Fantasque.
The wellbore will be left filled with inhibited fresh water. An air space will be left at the top of the
wellbore to prevent freeze‐back of the wellbore fluid (water). There is no observed history of
permafrost in this well. In addition, the NRCAN “permafrost Map” indicates “Sporadic Discontinuous
Permafrost” in the area, and none of the boreholes in the area (200‐400 km) indicated any permafrost,
the air space is considered prudent.
The steps of the operation are listed below. Paramount believes that this is an acceptable abandonment
procedure for the Fantasque zone, given the current state of the well. As the guidelines for suspension
and abandonment of wells in the NWT are currently not finalized, the Alberta Energy Regulator (AER)
Directive 20 has been used as a guideline for this operation.
Proposed Operations:
1. Check for surface casing vent flow.
2. Kill well with fresh water.
Produced water is not readily available and fresh water is sufficient to kill both zones.
Additionally, this will avoid the need to circulate the well to fresh water after plugging
operations.
3. Rig up service rig and install and test BOPs.
Ensure service rig is positioned to allow BOP doors to be opened to change rams, and ram
cavities are oriented to allow ram change.
The alignment pin (typ. Hex key) on the tubing spool should be at the 12 o’clock position and the
rig at 6 o’clock. The 60mm tubing string should be on the left (9 o’clock) and the 50mm string
on the right.
4. Pull 52mm tubing from the well and lay down.
(Note: 52mm offset rams are required. Offset will be 1.86” or 47mm from center)
5. Pull 60mm tubing from the well with Baker FH packer @ 1383m KB.
(Note: A ram change to 60mm rams is required. Offset rams will not be used – as soon as the
tubing hanger is pulled the tubing will be essentially centered in the wellbore.)
6. Set a 178mm permanent bridge plug as close as possible on top of the packer at 1383m.
7. Run in hole with a 178mm retrievable packer and set below the Fantasque perforations at 1347.
Pressure test the bridge plug to 7000kPa for 10 minutes (ref. AER Directive 20 5.3.5.2 Option 1).
Release and retrieve the packer.
8. Run in hole with 60mm tubing and set just above the bridge plug at approximately 1381mKB.
Circulate a balanced 1.2 m3 Class G cement plug (final plug top will be 1324m – 20 meters above
top of Fantasque perforations).
9. Pullout of plug and backwash tubing. Wait on cement to set.
10. Pressure test plug to 14,000 kPa for 10 minutes.
(Ref: AER Directive 20 5.3.5.2 Option 4)
11. Confirm plug top with tubing (minimum weight is 1800 daN).
(Ref. AER Directive 20 – 6.1 Method 1)
Plug top must be at least 1325m (9 meters above the top Fantasque perforation).
12. Pull out all tubing. Do not fill the hole. This will leave approximately 50 meters of air filled
borehole.
13. Dump 1% water dispersible inhibitor down well (Corinox or equivalent).
14. Cut and remove rathole/mouse hole 1m below ground if present.
Backfill hole with 1 m cement plug if required.
15. Excavate around wellbore approximately 1.5 meters below ground level).
Slope sides 1:1 or shallower.
16. Cut and remove conductor pipe.Support casing bowl with picker or similar.Cut three 60 degree windows in surface casing just below the bowl and then cutproduction casing. Production casing may drop.Cut surface and production casing at least 1meter below ground level.Stitch weld a 6mm steel plate over the casing stubs (do not seal).
17. Weld pipe signpost to surface casing and install the permanent well sign.
18. Backfill the hole with a 0.3m crown to allow for possible subsidence.
19. Rigdown and remove all equipment and material used in the operations from the lease.Haul any remain fluid to an approved waste disposal location.
END
R Heenan
20161108
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Engineers and Geoscientists
1 m below groundNon-sealing steel plate
Inhibited water+/- 50m 502m 244mm Surface casing
Cement Top 1325 m MIMIMUM (feel with tubing)
Fantasque Perforations NEW Cement plug1344-1347m
1380 approx NEW bridge plug
On-Off connector 47.6mm profileFSG Plug dropped 1383.3 Hydraulic Set Packerstuck on & blocking on/off con.
Packer is not retrievable1387 114mm liner top
1494 178mm Intermediate csg shoe1501.5 Sliding Sleeve
8 jts 60mm tbgF nipple3.07m 60mm pupOn-Off connector 47.6mm profile
1589.8 Packer
1514-1582mKBMattson Perforations
1740 Baker WL Packer
Numerous MattsonPerforationsAbove & below the BP Bridge plug1751-2046mKB
2107 114mm line shoe
PARAMOUNT ET AL FT. LIARD F-36Proposed Abandonment
WELL NAME DATE March 21,2006
ELEVATIONS (meters)KB ELEV GL ELEV KB TO THF KB TO SCF KB TO GL PBTD
470.3 464.8 4.95 5.5 2092 mKBOD (mm) LANDED DEPTHWEIGHT (kg/m) TOP OF (mKB)
Surface Casing 244.5 502 mKB 48.07 SurfaceIntermediate Casing 177.8 1494 mKB 34.2 SurfaceLiner 114.3 2107.59 mKB 17.26 1387.7
Perf Date Zones Top Shot Bottom Shot Status Gun Data17 Mattson 1751.00 2046.00 Open
Mattson 1600.00 1724.00 OpenMattson 1514.00 1582.00 Open
16 Fantasque 1344.00 1347.00 Open
15
DOWNHOLE DESCRIPTION FROM BOTTOM UP (Tubing String)ITEM # DESCRIPTION LENGTH TOP OF (mKB)
1 139.7 mm On/Off not latched, no seals 0.44 1382.3624 2 60.3 mm, L-80 tubing pup joint 0.63 1381.73
3 60.3 mm x 47.63 mm 'F' profile 0.28 1381.454 60.3 mm x 73.0 mm x-over 0.20 1381.25
14 5 177.8 x 73.0 mm 'FH' 10K Hydraulic set packer 2.03 1379.226 73.0 mm x 60.3 mm x-over 0.20 1379.027 139.7 mm L-10 On/Off c/w 47.63 mm profile 0.44 1378.58
23 8 60.3 mm, L-80 tubing pup joint 1.27 1377.319 60.3 mm x 47.63 mm 'F' profile 0.28 1377.03
13 22 10 60.3 mm, L-80 tubing nipple 0.33 1376.7021 11 3 - jts 60.3 mm, 6.99 kg/m, L-80 tubing 29.08 1347.62
Fantasque Int 12 2 - 60.3 mm blast joints (78.0 mm x 50.6 mm) 6.00 1341.621344-1347 mKB 20 13 Baker 'CD' SSL 60.3 mm x 47.63 mm 'F' profile 1.16 1340.4612 19 14 136 jts 60.3 mm, 6.99 kg/m, L-80 tubing 1317.91 22.55
18 15 3 - 60.3 mm, L-80 tubing pup joints (1-6', 2-10') 8.00 14.5516 1 - jt 60.3mm, 6.99 kg/m, L-80 tubing 9.71 4.84
11 17 Dual Hanger Assemby 0.20 4.6410 -9 18 52.4 mm re-entry guide @ 1347.90 mKB -
19 52.4 mm x 3.00 m pup jt @ 1347.82 -8 20 52.4 x 39.67mm 'R' no/go 38.35mm @ 1344.61 mKB -7 21 52.4 mm, 4.84 kg/m jt tbg @ 1334.69 mKB -6 22 52.4 x 39.67mm 'F' @ 1334.46 mKB -
23 52.4 mm x 3.00 m pup jt @ 1331.43 -24 52.4 mm, 4.84 kg/m, 134 jts tbg @ 1331.43 mKB -
5 WEIGHT OF TUBING STRING (daN 8000 TOTAL STRING LENGTH 1378.16TENSION/COMPRESSION (+/- daN -5000 STRETCH/SLACKOFF (+/- m) -0.31
4 LANDED STRING WEIGHT (daN) 3000 TUBING BOTTOM (mKB) 1382.80
3 DOWNHOLE DESCRIPTION FROM BOTTOM UP (Rod String)2 AMOUNT DESCRIPTION LENGTH TOTAL (m)
Model 'L' On/Off 1 -No Seals, not -latched Plug on top of Pkr -
-Center Element -1383 mKB -
--
PUMP DESCRIPTION PUMPJACK DESCRIPTION
On/Off Tool c/w LANDED DEPTH (mKB) 4.95
47.63 mm profile WELL HEAD DESCRIPTIONBaker 'FLH' Pkr 1589.7 mKB ITEM # DESCRIPTION SERIAL # MWP SIZE1590.5 mKB
Baker 'L' SSLMattson Int 1653.41 mKB1514-1582 mKB Blast Joints
Baker 'WL' Pkr1740.5 mKB
Baker 'R' profile c/w1742.7 mKB
REMARKSBridge Plug Baker 'FH' packer set at 1379.97 mKB to center element in 5000 daN compression.
Mattson Int Pup joints at top 1751-2046 mKB Recorders & wire left in Mattson @ 1592m - see daily reports March 2006
CASING DESCRIPTION
Downhole Well ProfileParamount et al Fort Liard F-36
Liard F-36 Current Configuration (20161104)