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Coiled Tubing Introduction
• Surface equipment
• BHA assemblies
• Some problems and observations
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World Wide CT Records
Largest CT in Use 3-1/2"
Max Depth 24!!!
Max #ori$ontal 1%!!! &'! deg(-W)tch *
Longest *#, 1!! - per. gns - U0
Longest trings 23!!! o. 2-3/'"
2'!!! o. 1-1/2
Max Wellhead +ressre '!! psi
Max Deplo)ent +ress 4!! psi
Max *# Tep %!! - Mex %'! 5apan
Max ,cid at Tep 2'6 at 2'! in D7aiCT in #2 %6 in 8reece
'6/3!!- 8l. o. Mexic
&string sed one tie(
CT in C92 16 - &string rined(
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Power Pack
InjectorReelOperator’s Cab
Transports
and Pumpers
wind
Typical CT Layout
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CT Reel Configurations
•CT Reels available in number of configurations
– Truck mounted fi!ed" # permanentl$ fi!ed to t%e truck c%assis
– Truck mounted skid" # ma$ be c%anged out
– Skid mounted # for offs%ore operations
– Trailer mounted # for large capacit$ lengt%" or %eav$ &eig%tstrings
– CT logging reel # fitted &it% electrical s&ivel'collector
– Special application reel # t$picall$ for completion applications•(ocal conditions'nature of CT operations determine t$peof reel required
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Coiled Tubing Rig up
in Alaska) T&o &ells
on t%e same pad are
being)
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CT *quipment Basics
• Components
– Coil
– +o&er pack
– Component Controls
– Reel
– In,ector &it% guidearc%"
– -ell Control Components
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Coil T$pes and Availabilit$
• CT diameters
• CT &all t%ickness
• CT tapered strings
• CT strengt% ranges
• CT metal c%oices• Composite CT
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CT .iameters
• /'01 2'3 and /4 earl$ diameters
• /#/'34 and /#/'04 &ork%orses /#2'3"
• /#2'3 to 0#2'54 larger &orkstrings 2#/'0"
• 2#/'0 and 3#/'04 and larger" # flo&lines
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CT production for 6or /778
• 1” 1.! "" #t
• 1.!” 1$.! "" #t
• 1.” %.! "" #t• 1.&” '.' "" #t
• !” 1.!! "" #t
• !(')*” +.% "" #t
• !(&)*” +.$' "" #t
• '(1)! +.$ "" #t
• $,$.” +.1! "" #t
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Tapered Strings
• Common is I).) taper # &eld area taper
• 9ncommon is :).) taper # deeper &ells1
some %$draulic problems
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-unction weld in #lat strip
utt /eld 0 early
strin joiner and
common repair weld.
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ias weld
in #lat strip
T%e bias &eld offsets
t%e &eld ends on t%e
strip as it is formed into
a tube – muc% stronger)
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6ield -elds
• Al&a$s a Butt &eld)
• Can decrease tensile strengt% of CT b$ ;<=
or more)
• >ualit$ of field &elds varies enormousl$
• Avoid field &elds &%en $ou can)
– 9pper part of tubing is &orst place for a butt
&eld)
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?aterial Strengt%s
• ;;1<<< psi limited"
• @<1<<< to 5<1<<< psi still in use"
• /<<1<<< psi no& ver$ common"
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Trade#:ffs
• strengt% vs cost
• ductilit$'&eakness vs strengt%'cost
• corrosion possibilities• strengt% vs service life
• In general1 %ig% strengt% CT lasts longer and is morefatigue resistant) But1 &%at about corrosionHardness matters) Stress Corrosion cracking andembrittlement)
, l i . C il d T 7i
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,nal)sis o. Coiled T/7ing
Mod ,:!: Mod ,:!%
Car7on !;!'-!;1 !;!'-!;1%
Manganese !;:!-!;! !;:!-!;!
+hosphor/s !;!3! ax !;!2 ax
/l./r !;!! ax !;!! ax
ilicon !;3!-!;! !;3!-!;4
Chroi/ !;4-!;%! !;4!-!;:!
<ic=el !;2 ax !;1! axCopper !;4! ax !;4! ax
Molo7id/ !;21 ax !;!'-!;1
C7-> !;!2-!;!4
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?ield trength #R* #RC Min; @long;
&psi(
!!!! 22
%!!!! '-4 3!6
'!!!! !-' 2'6
!!!! 4 22 26
1!!!!! 2!-2 226 est;
11!!!! 22-2' 1'6 est
SPE 46052
2ew CT Properties
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#ardness As C
0
2
4
6
8
10
12
14
16
18
20
19 20 21 22 23 24 25 26 27 28 29
#ardness #RC
1 1
C
R e s i s t a n c e
1 c
Corrosion Resistance 3s 4ardness
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Composites
• (imited 9se
• Composites lig%ter'more fle!ible t%an steel)
• ?ore costl$ t%an steel
• (imitations
– Creep under load
– Temperature
– .o&n%ole Buckling resistance
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Surface *quipment
• +o&er +ack
• Reel
• Controls
• In,ector
• Seals
+ k ll di l d i % d li
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+o&er pack – usuall$ diesel driven %$draulic pumps)
Requirements set b$ equipment in use)
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T$pical (a$out of Control Cabin
Controls and Instruments /"L a y e r 1O P E N
S T R I P P E R# 2
L E V E L W I N DA R M
U P
D O W N
E M E RG E N C Y TR A C TIO N SU PP LY
I N J E C T O R I N S ID E TR A C TIO N P RE SS UR E
1 5 0 0 P S I M A X
TO P
O N
O F F
O N
O F F
O N
O F F
M I D D L E
O T TO M
I N S ID E T R A C T I O N
P R E S S U R E A D J U S T
I N S I D E T R A C T IO NS U P P L Y P R E S S U R E
L E E DP R E S S U R E
I N J E C T O R O U T SI D E TE N SI O N P R ES SU R E
1 5 0 P S I M A X
P R E S S U R E
P R E S S U R E
P R E S S U R E
S T R I P P E R# 1
R E T R A C T N E U T R A L P A C ! R E T R A C T N E U T R A L PA C !
S T R I P P E R S Y ST E M P R E S S U R E5 0 0 0 P S I M A X
S T R I P P E R
P R E S S U R E A D J U S TA I R RE G " C O N T R O L
# 2S T R I P P E R
# 1S T R I P P E R
O P S U P P LY O P P R E S S U R E O P S U P P L Y P R E S S U R E
O N
O FF
C L O S E O P E N C L O S E O P E N
C L O S E O P E N C L O S E O P E N
L IN D R A M
P I P E R A M
S E A R R A M
S L I P R A M
OP
I G
LO W
IN J E C T O RS P E E D
R E E L R A ! E
O F F
R E E L P R E S S U R E
R E E L P R E S S U R E A D J U S T
R E E L C O N T R O LL E V E L W I N DO V E R R I D E
I N S I D E T R A C T I O NP R E S S U R E D R A I N
C L O S E
I N J E C T O RM O TO R P R E S S U R E
IN J E C T O R M O T O R P R E S S U R E A D J U S T
I N J EC T O RC O N T RO L
I N J E C T O R D I R EC T I O N A LC O N T R O L V A LV EP I L O T P R E S S U R E
P R I O R I T Y P R E S S U R E2 $ 0 0 0 P S I M A X
IN
O UT
O N
O F F
O N
O FF
A I P S U P P L YP R E S S U R E
% 0 G P MP U M P
& 0 G P MP U M P
T R O TTL E
E N G I N ES T O P
E M E RG E N C YS T O P
A I R O R N
I N J EC T O R C A I NL U R IC A T I O N
R E E L T U I N GL U R IC A T IO N
W E L L E A D P R E S S U R EC I R C U L A TI N G P R E S S U R E
TU I N G W EI G T IN D IC A TO R
S ' ( )* + , e r - e r
D . / e ) )
(ooks more comple!1 but main data is from load1 &ell%ead pressure
and annular pressure)
?ain controls are in,ector %ead and coil spooling)
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+rincipal Dauges
– -ell%ead +ressure Dauge• displa$s &ell%ead pressure at t%e B:+ pressure port
– Circulating +ressure Dauge• displa$s pressure at t%e reel#manifold pressure sensor
– -eig%t Indicator • displa$s &eig%t e!erted b$ t%e tubing on t%e in,ector %ead
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*lectronic *quipment
•6ollo&ing equipment used to monitor CT91 tubing1
and &ell data
– *lectronic .ept% Sensors• provide remote dept% displa$s and signals to a +ACR unit
– *lectronic +ressure Sensors• monitor &ell%ead pressure1 circulating pressure and tubing &eig%t
– Tubing ?onitoring *quipment
• gives remote displa$ of tubing condition and ma$ record lifestatistics
• data ma$ be recorded
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Running Speeds
• 6irst time into a &ell # 3< to @< ft'min
• Eormal run in operations # ;< to /<< ft'min
• Spool#out – depends on t%e &ell1 t%e BHA1
coil equipment1 friction and operator)
• Runa&a$ # e!perienced 5<< to 7<< ft'min)
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T$pical CT Reel # Side Fie&
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-%atGs .ifferent T%an ointed +ipe
All fluids in,ected from t%e
surface enter t%e CT at t%e
bed#&rap end) All fluid %as
to travel t%roug% all of t%ecoil)
T%at influences friction since
friction is near constant &'
CT &%et%er $ou a in,ecting
fluid at / foot into t%e &ell or
/<1<<< ft into t%e &ell)
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Some of t%e e!tra fittings in t%e
input plumbing allo& a ball to beinserted and dropped4 pumped
t%roug% t%e coil") T%e ball travel
ma$ take several minutes to clear
t%e coil and enter t%e &ell)
A flo& control manifold T%is one allo& reverse circulation t%roug%
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A flo& control manifold) T%is one allo& reverse circulation t%roug%
coiled tubing)
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Reel .rum Capacit$
B
A
Freeboard
C
6reeboard is normall$ not muc%
of an issue1 but can become ver$
important if t%e CT is not spooled
tig%tl$ and t%e drum is nearl$ full
for a deep &ell CT ,ob)
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Reel Capacity 5ariables
• Reel diameter
• Reel widt6
• 4ub diameter ( set by CT O7
• Pipe O7
• Ti6tness o# wind 8operator e9pertise:
• /ei6t;
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Reel Bn.oration .or >arios i$es o. CT
CT Dia; Reel #7 Dia; 8ide ,rch &Reel Width( ,pprox; Capacit)
&in( &in( &in( &in( &.t(
!;% 4' 4'
1 :! 4'-4
1;2 %2 4'-%2 11% 1%!!
1; '4 &4'(-%2 12' 1!!!
1;% : %2-: 14' 1'!!!
2 : %2-:
2;3% 1!' !-12!
2;'% 1!' !-12!
3; 12! !-12!
<elected Reel 7iameter In#ormation
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<poolin =ield
• Coiled Tubing is $ielded as it is spooled
• Radius to produce $ielding is
RJ*.'0"'S$
&%ereRJbend radius1 ft
*J elastic modulus1 2<!/<8 psi. J tubing diameter1 inS$ J $ield strengt%1 psi
T%e level#&ind like a bait#casting fis%ing reel" %elps
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g g " p
feed t%e coil onto t%e reel)
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.ept% ?easurement *quipment
•.ept% measuring equipment #*lectronic or mec%anical
•6requentl$ mounted on in,ector %ead•.ept% information commonl$ acquired b$ t&o met%ods• 6riction#&%eel counter bet&een in,ector
c%ains and stripper • *ncoder assembl$ on in,ector#%ead c%ain drive s%aft
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In,ector Duide Arc%
•Duide arc%
– Turn tubing t%roug% angle bet&een &ell%ead and
CT reel – CT supported b$ rollers at K/<#in) intervals
around gooseneck
• guide arc% radius significantl$ affects fatigue in CT
string
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Comparison of Duide Arc% SiLes
50-in. radius(HR 240)
120-in. radius(HR 480)
72-in. radius(HR 260)
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Recommended Duide Arc% RadiiCoiledTubing OD(in.)
0.7501.0001.2501.5001.7502.0002.3752.8753.500
Typical ReelCore Radius
(in.)
2420-3025-3630-4035-4840-4848-5454-5865-70
Typical GuideArch Radius
(in.)
4848-5448-7248-7272-9672-9690-12090-12096-120
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CT Injectors
• In,ector *volution
– &%eel1 c%ains1 c%ain and back to t%e &%eel
• Dripper .esign and *ffect on t%e Tube
• +o&er Requirements
• (oad Cells
• -ear and 6ailure +oints
• Control vs micro4 control
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In,ector Head Components
•+rincipal components of in,ector %ead
– .rive and brake s$stem
– C%ain assembl$
– Traction and tension s$stem
– Duide#arc% assembl$
•Secondar$ or support s$stems
– -eig%t indicator
– .ept% sensor mounts
– Stripper mount
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In,ector Head .rive and Brake
S$stems•.rive and brake s$stems can e!ert %ig% forces on
– CT string
– tubulars
– &ell%ead equipment
•CT9 operator must
– Be a&are of s$stem design and la$out
– Be familiar &it% control and relief valves
– 9nderstand limitations of CT string• avoid application of e!cessive force
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In,ector Head .rive S$stems
•In,ector %eads %$draulicall$ driven
– T&o or four %$draulic motors
– ?otors connected's$nc%roniLed t%roug% gear s$stem
– .rive directed to c%ain drive sprockets via drive s%afts
– Rotation'speed of motors controlled b$ valve on po&er pack
– H$draulic s$stem pressure'rate controlled from CT9
control console
– +ressure relief'crossover relief valves• protect tubing'%$draulic components
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T$pical In,ector Head
Stripper assembly
Gooseneck or guide-arch
Injector drive motor
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T$pical In,ector Head Support
Substructure
Arco
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In,ector Head Brake S$stems
•Brake %$draulicall$ controlled
– H$draulic pressure required to release brake• fail#safe in operation
– Application of brake is automatic• controlled b$ drive s$stem %$draulic pressure
• applied &%en %$draulic pressure belo& preset value
•Some %$draulic motors %ave %ig%'lo& gear option
– Selected remotel$ from t%e CT9 t%e control console
– Allo&s in,ector %ead to operate more efficientl$
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In,ector Head C%ain Assembl$
•?ost in,ector %eads %ave t&o sets of opposingendless c%ains
– Series of gripper blocks mounted on eac% c%ain
– Dripping profile of eac% block suits a specific tubing siLe
•*ntire CT string load %eld b$ face of t%e gripper
block or insert – :ften ac%ieved under significant force
– Selection'operation'maintenance of c%ain componentss%ould minimiLe risk of damage to CT string
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In,ector Head C%ain Dripper Inserts
•Removable gripper inserts on most in,ector %eads
– Run range of tubing siLes &it%out removing'replacingentire c%ain assembl$
– Reduce time'effort required to reconfigure in,ector %ead• &%en running a different siLe of CT string
• &%en running a tapered CT string
– Reduce cost of replacement &%en &orn
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Ribbed in,ector
block)
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Smoot% faced
in,ector
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SS5<< C%ain Assembl$
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Bottom sprocket on in,ector)
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Inside C%ain Tensioner S$stem
•Inside c%ain tensioner s$stem
– Also kno&n as skate s$stem or traction tensioner s$stem
– +rovides force for adequate grip on tubing string• force is applied to t%e back of t%e c%ain assembl$
•C%ains fitted &it% bearings
– Roll smoot%l$ over tensioner s$stem &%ile transmittingload
– *nable c%ains to rotate easil$ &it% %ig% loads
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Traction and Tension S$stems
•In,ector %ead traction or inside c%ain tensioner s$stem
– Also kno&n as skate s$stem
– +rovides force to securel$ grip tubing
– 6orce applied t%roug% 2 separate sets of %$draulic c$linders• reduces risk of ma,or operating failure if component fails
•:utside c%ain tensioner s$stem
– *nsures adequate tension in c%ain section outside verticaldrive plane
– Tension provided b$ %$draulic rams
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Backpressure Ad,usted to
+rovide Suitable Tension
Incorrect
Correct
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BJ Services
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Coiled Tubing
Deployment
0ill Line0ill Line
!;' !;'
lolineloline
1!1;: 1!1;:
Wellhead
@D@D
&Tester(&Tester(
lo Linelo Line
1!1;: 1!1;:
Drilling poolDrilling pool
1%;4 3 M+a1%;4 3 M+a
Coiled T7ing *9+Coiled T7ing *9+
1%;4 3 M+a1%;4 3 M+a
*lind/hear Ra*lind/hear Ra
lip/+ipe Ralip/+ipe Ra
lo poollo pool
,nnlar,nnlar+reAenter +reAenter
ConAentional
Rig *9+
*#,*#,
Deplo)ent *9+Deplo)ent *9+
1%;4 3 M+a1%;4 3 M+a
8ate >alAe8ate >alAe
1%;4 1%;4 LocatingLocating
RaRaUpperUpper
+ipe Ra+ipe Ra
Loer +ipeLoer +ipe /lip Ra /lip Ra
Deplo)ent *9+
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+%$sical Brace
• If t%ere is a long space lengt% is a variable
&it% pipe diameter1 &all1 and buckling
force" t%en a brace bet&een t%e bottom oft%e in,ector and t%e first seal is necessar$)
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Snubbing'Stripping 6orces on CT
• 6orce to pus% CT t%roug% stuffing bo!'stripper opposite running"
• 6orce on CT from -ell Head +ressures #up&ard"
• 6orce to overcome friction oppositerunning"
• 6orce from &eig%t of CT M BHAdo&n&ard"
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Load <ecessar) to +ll Wireline into Wellhead
0
10
20
30
40
50
60
70
80
90
100
0 2000 4000 6000 8000 10000 12000
Wellhead +ressre ps i
L o a d
< e c e s s
a r )
l 7 s
0
0
0
0
<)<@04
<)/<54
+roblem in rig up %eig%t and lubricator lengt%)
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Load <ecessar) to +ll Ca7le into Wellhead
0
100
200
300
400
500
600
700
800
0 2000 4000 6000 8000 10000 12000
Wellhead +ressre ps i
L o a d
< e c e s s a
r )
l 7 s
3/16"
5/16"
7/16"
<nubbin >orce on CT at /ell6ead
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+ress/re Bnd/ced n/77ing orce > Well #ead +ress/re .or >ario/s Coiled
T/7ing i$es &M/st add stripper .riction .orce(
0
20000
40000
60000
80000
100000
120000
140000
160000
0 2000 4000 6000 8000 10000 12000 14000 16000
Well #ead +ress/re psi
* a s e 1 n / 7 7 i n g 4 o r c e
l 7 s
1" CT
1-1/4" CT
1-1/2" CT
1-3/4" CT
2" CT
2-3/8" CT
2-7/8" CT
3.5" CT
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Dap bet&een t%ein,ector and t%e
stuffing bo! – T%e
pipe in t%is area is
ver$ susceptible to bending – Eote t%e
brace around t%e CT)
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-eig%t Indicator
• -%at negative &eig%t &ill cause in,ector to
lift off load cell
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-eig%t Indicator *quipment
Front weight
sensorRear weightsensor
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<eals
• Stuffing Bo! # +rimar$ sealing mec%anism
for isolating t%e &ellbore) +ositioned above
t%e B:+1 ,ust underneat% t%e in,ector %ead)A connector attac%es t%e bo! to t%e B:+)
• B:+ # multi#level control for closing in t%e
&ell1 s%earing t%e CT1 sealing around t%eCT and gripping t%e CT) ?a$ be used in
pairs in e!treme applications)
CT B:+Blind
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Blind
S%ear
+ipe
Slip
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T$pical (oads /);4 CT1 ;<<< psi
• snub force J /)@8@ in0 ! ;<<< psi"
J552; lb
• stuffing bo! friction drag forceJ0<<< lb
• total J/<52; lbat start of t%e CT run#in
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Load C6anes w)CT inserted
• /);1 <)/<74 &all1 /)802 lb'ft
• one foot of CT in &ell J /<522 lb
• /<<<G CT in &ellJ/<52;#/<<< ! /)802"J70/0 lbs
• /<1<<<G CT in &ellJ /<52;#/<1<<<!/)802" J #;27; lbs
• t%is assumes no &all friction
S l i CT i f ll
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Selecting a CT siLe for a &ell
application)• Clearances
– 6or circulation
– 6or passing debris t%roug% t%e CT#tubing annulus
– -%at %appens &%en CT collapses .oes it stick itself
in a profile or ot%er close clearance -%at is diameter
of collapsed CT)
– -%at %appens &%en t%e &ell tubulars are muc% larger
t%an t%e CT Can it buckle -%at if it collapses
Wor=ing Tensile Loads o. ConAe)ances
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Wireline Wor=ing Load Weight o. Wire/T7e Rnning peed
!;!%2 %2! !;!14 1!!-1! .t/in
!;!'2 3! !;!1'!;!2 11:! !;!23
!;1!' 1'2% !;!31
CT
1;2 21!! 1;332 !-1!! .t/in1; 2::!! 1;:23
1;% 3144! 1;1
2;3% 42! 3;!11
T7ing
2;3% %!!! 4;: - 1 .t/in
2;'% %2!! :;4
3; 112!! ;2
3-1/2" D+ 1'!!! 1;
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ob .esign 6actors
– -ell control must be maintained
– +ersonnel safet$ # perform tasks using requiredsafet$ equipment
– :peration designed'e!ecuted &it%in operatinglimits
– :perating standards
• operation e!ecuted in accordance &it% operating practices1 regulations and safet$ standards) T%ese ma$var$ &it% t%e task1 compan$ and location)
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.esign Soft&are
•T$pical ,ob design soft&are'modelling
– Tubing forces – 6atigue tracking soft&are
– :perating limit soft&are
– -ellbore simulator
– 6riction pressure
– 6oam cleanout
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Tubing 6orces Soft&are
•Ne$ features'functions
– Anal$ses loads applied to CT
– +redicts
• &eig%t indicator readings
• point of %elical buckling and lock#up
– +rincipal functions
• confirm &orkstring can be run to desired position in &ellbore
• verif$ toolstring &ill pass doglegs'&ellbore anomolies
-eig%t Indicator (oad #
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gFerification
4 ! ! ! ' ! ! !
- ! !
4 - ! !
! ! ! M e a s / r e d
R B # & o d e l (
+ 9 9 # & o d e l (
M @ , U R @ D D @ + T # 9 T R B < 8 & . t (
W
@
B 8
#
T
B <
D
B C
,
T
9
R
R
@
,
D
B <
8
& l 7
. (
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6atigue Tracking Soft&are
•Ne$ features'functions
– +redicts remaining useful life of a &orkstring
• operates in con,unction &it% database for eac% reel – +rincipal functions
• predict life remaining in eac% &orkstring element
• confirm operation can be completed safel$
• minimiLe risk of tubing failure during operation
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CT String (ife Tracking
2 ! ! ! 4 ! ! ! : ! ! ! ' ! ! ! 1 ! ! ! !
1 !
2 !
3 !
4 !
- !
: ! W e l d L o c a t i o n
+ r e A i o / s L i . e
C / r r e n t L i . e
D B T , < C @ R 9 M D 9 W < # 9 L @ @ < D 9 T R B < 8 & . t (
+
R
@
D
B C
T
@
D
L
B 4
@
R
@
M
,
B <
B <
8
& 6 (
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Support Slides
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:perating (imit Soft&are
•Ne$ features'functions
– .etermines pressure'tension limits underanticipated conditions
– Calculates collapse pressure limit• takes string ovalit$ into account
– +rincipal function• grap%icall$ depicting safe pressure'tension limits for
&orkstring in given &ellbore and conditions
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CT Reel 6eatures
•?ain components of CT reel
– Reel drum
– Reel drive and brake s$stems
– Reel s&ivel and manifold
– (evel&ind assembl$
– .ept% measurement accessories – Tubing lubrication equipment
– Cras% protection frame
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Reel .rum
•Reel drum generall$ consists of
– .rum
– A!le
– 6langed connection on a!le• allo&s s&ivel to be connected
– C%ain sprocket on t%e a!le• drives t%e drum
– Second c%ain sprocket on t%e a!le• drives t%e level&ind leadscre&
– 6acilit$ to lock reel drum &%ile being transported
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Reel .rive'Brake S$stems
– All reels %$draulicall$ driven
– Control s$stem'motor t$pe var$
– ?ost reels can be po&ered in Oin#%oleO and Oout#%oleO
• onl$ Oout#%oleO mode used
– +ressure in %$draulic drive s$stem controls torque outputof motor
• varies tension on t%e tubing bet&een gooseneck and reel
– Reel brake s$stems air or %$draulicall$ operated – Reel brake s%ould be applied &%en tubing is stationar$
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?aintaining Correct Tension
•:nl$ sufficient tension to keep tubing straig%t bet&een reeland in,ector %ead s%ould be applied
•+ressure required to ac%ieve satisfactor$ tension depends on – Amount of tubing on reel
– .istance from gooseneck
•Appl$ing e!cessive tension ma$ result in – +remature failure of %$draulic and drive components
– .amage to tubing
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H$dra#Rig HR 35< In,ector Head
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H$dra#Rig HR 33< In,ector Head
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Ste&art and Stevenson SS 3<<
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Ste&art and Stevenson SS 5<<
R T 2 0
M A R I T I M E # Y D R A U L I C S 1 C A N 2 L T D "C A L G A R Y $ A L E R T A $ C A N A D A
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.R*C: C%ain Assembl$ # :pen
.R*C: C%ain Assembl$
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.R*C: C%ain Assembl$ #
Closed
In,ector Head .R*C: C%ain
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In,ector Head .R*C: C%ain
Assembl$•.R*C: c%ain and drive s$stem
– 9nique single c%ain s$stem
– Hinged gripper assembl$
• ensures gripping force isolated from drive c%ain
– C%ain assembl$ aligned &it% tubing a!is• reduces eccentric loading on c%ain'gripper components
– Smoot% operation and long component life
– Dripping force applied t%roug% %inged gripper block • cam rollers forced closed b$ pressure beams
• %$draulic rams control force applied b$ pressure beams
HR03<'08< C%ain Tension
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HR03<'08< C%ain Tension
Assembl$