An Introduction to Flexible Pipes

7/18/2019 An Introduction to Flexible Pipes

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An introduction to Flexible Pipe

Stephan Ostergaard



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Agenda

What is flexible pipe?

Where is flexible pipe used?

The PLUTO project1st odern de!elopents

"esign and anufacture

#nstallation



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What is flexible

pipe?



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What is Flexible pipe?

• ‘Flexible pipe’ – can refer t!

"n#bn$e$ flexible pipe

%n$e$ flexible pipe

• &$a' – (e are ging t l) at!

–

Un$bonded Flexible pipe



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What is flexible pipe?

•

* str+ct+re c,pse$ fcncentric ,etallic an$nn#,etallic la'ers,an+fact+re$ in single

extr+sins f ther,#plastics an$ (+n$ (ithcl$ fr,e$ strip ,etal(ires-



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What is flexible

pipe used for?


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What is flexible pipe +se$ fr?

• "se$ ttransprt fl+i$sfr, ne placet anther-

• Fl+i$s! il. gasan$ (ater-


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Where is flexible

pipe used ?



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Where is flexible pipe +se$ ?

•

xtre,e $'na,iccn$itins # ,a)esFP’s in areas li)e therth sea pssible-

• elatiel' g$

ins+lating prperties-• $ che,ical

c,patibilit'

• elatiel' eas' t install

•

nee$ fr $etaile$8etrlg' 9final tie#ins:


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Where is flexible pipe +se$ ?

•

Flexibles are na,e$fll(ing their +se!

• %isers 9can be static <$'na,ic:.

•

Flo&line 9lngerlength static pipe#line:

• 'upers 9nr,all'shrt length fr,

(ellhea$s / bet(eenrigi$s etc:



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The PLUTO

Project

Let(s &ind bac) the cloc)?



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&he P="& Pr>ect

• WW2 # the *llie$ frces areplanning the inasin f+rpe

• The PLUTO

project is born• PLUTO – Pipe =ine "n$er

&he cean

• Pr>ect starte$ in 1042

• & s+ppl' f+el fr *llie$trps after the inasin fr,an$' 1044



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P="& Pr>ect

• eliee $epen$encen il tan)ers

• "sing a$apte$s+b,arine cabletechnlg'

•

&he first line. 12*+g+st 1044. er13; ), fr, sle fWight t@herb+rg-

•&hen anther 2;lines installe$



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The first odern

de!elopents

A lin) to *+T ,no& *O-Flexibles.?

#nstallation offshore /#celand ?



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&he first ,$ern $eelp,ents

• 106 sees the firstc,,ercial flexible pipeinstalle$ bet(een celan$an$ the islan$ fAest,anna

• 14 ), ff the ,ainlan$

• "rgent nee$ t s+ppl'$rin)ing (ater t theislan$s-

• eserirs cnta,inate$(ith s+lph+ric ashes fr,lcanic actiities-



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&he first ,$ern $eelp,ents

• 4B C 9internal $ia,eter:pipeline-

• Press+re rating f 7; bar-

• Aer' +neen seabe$tpgraph'-

• Water $epth f 1;; ,-

• +pplie$ b' ‘D& cables’



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"esign and

0anufacture

0odern flexible Pipe

onstruction

0anufacture

Ancillaries

%iser onfiguration



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Cesign an$ 8an+fact+re

• 8$ern flexible pipe is er' $ifferent t l$er. cabletechnlg' inspire$ ‘flexible pipe’ – alth+gh there arec,,n aspects

• 8+lti#la'er. +n#bn$e$ cnstr+ctin

• 8ix f teel an$ pl',er la'ers

T2pified b23

• Ei#axial stiffness

• =( ben$ing stiffness – c,pare$ t ‘rigi$’ steel pipe-

•

@an (ithstan$ a higher c+rat+re than steel pipe (ith thesa,e press+re rating



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• &'pical sies 9C’s:! 2G t 1G

• &e,perat+re # #35@ t H13;@

• Press+res +p t 15.;;; psi 91;;; bar:

• Water $epths +p t 2;;;,

•

8ain in$+str' c$es fr flexible pipe!• *P 17I

• *P P 17%



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&here are t( ,ain t'pes fpipe $esign. r+gh is the

,st c,,n 9has acarcass: (here s,th is

nr,all' nl' +se$ in gas r(ater in>ectin



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Cesign an$ ,an+fact+re

OUTER SHEATH POLYMER

TENSILE ARMOR CARBON STEEL

ANTI-WEAR POLYMER

TENSILE ARMOR CARBON STEEL

ANTI-WEAR POLYMER

PRESSURE ARMOR CARBON STEEL

INTERNAL PRESSURE POLYMER

CARCASS STAINLESS STEEL

LAYER MATERIAL

Physical Property PA-11 HDPE XLPE PVDF

Maximum Temperature (°C) 65 [150°F] 60 90 130 [265°F]

Allowable trai! (") #$# #$0 #$0 3$5

Mo%ulu o& 'latiit (M*a) 350 #00 +00 950

Te!ile tre!,t- (M*a) 55 30 30 .0

T-ermal Co!%uti/it (m) 0$33 0$35 0$35 0$1#

&he chice fpl',er is

$irectl' relate$t the $esign

te,perat+re fthe pipe



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Cesign an$ 8an+fact+re – n$ fittings



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• iser @nfig+ratins

• teep Wae. teep

• =a' Wae. =a'

• Pliant (ae 9&echnip patent:

•

4Wa!e( – in$icate$ $istrib+te$ b+'anc'• 4S( – in$icate$ the +se f a ‘8i$ Water *rch’-

• Steep – in$icates a $irect cnnectin bet(een the s+bseaen$ an$ anther flange 9n interactin (ith seabe$:

•

La52 – refers t a generall' +n#tethere$ s+bsea en$9alth+gh nt al(a's the caseJ:-



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Flexible pipe ,an+fact+rers

• *O- ,&as *+T.

–

Factries in Dal+n$brg Cen,ar) an$ *c+ %rasil – *re K+alifie$ fr $eep(ater t 2;;;, 9s,e Cs

nl':

• 67 Wellstrea

– Factries in e(castle. nglan$ an$ %rail

– *re K+alifie$ fr $eep(ater t 2;;;, 9s,e Csnl':

•

Technip – n s,e respects the Wrl$ lea$er

– Factries in =e &rait. France. Aitria. %rail <8ala'sia

• Pr2sian

– ",bilical ,an+fact+rer

– I+st K+alifie$ fr flexibles

•

"eepflex – @,psiite flexible

– %ase$ in Wiscnsin. "*



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&he F+t+re?

@,psite Cesign – %n$e$

Airborne

0aga

9al,st Lrigi$G pipe. as itnee$s M12, ben$ ra$i+s:

*irbrne $esign is 3 la'er$esign. fibres are heatf+se$ an$ (+n$ ar+n$extr+$e$ la'er

8* $esign is single (allstr+ct+re. beliee$ t beheat f+se$ (ith pl',er,elt prcess



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#nstallation



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nstallatin

nstallatin cnsi$eratins f a flexible pr$+ct?

N Aerif' that the pr$+ct is installable # What la$s canthe pr$+ct ta)e?

N Cesign an$/r erif' that the la' sprea$ is s+itable #C (e hae the eK+ip,ent reK+ire$ fr installatin?

N Ceelp installatin prce$+res # E( t han$le the

pr$+ct safel'



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nstallatin

N Perfr, installatin anal'sis # What la$s (ill the

pr$+ct experience $+ring installatin?

N Ceelp cntingenc' prce$+res

N # What ifs?



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nstallatin – Aessel selectin

• Ei#en$ essel. (ith single p+rpse



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• r $ (e tr' a s,aller – ‘cheaper’ sl+tin



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• r $ (e g reall' cheap?



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• %arge ,ing n anchrs?



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nstallatin – Pr$+ct strage an$ han$ling

• eels. car+sels < cils



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nstallatin – =a$ +t

• ‘&ransple$’ – =a$ +t



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nstallatin # ngineering

• Pr$+ct $ata

• n place $esign

• Water $epth

• 8etcean $ata! (aeheight. peri$. c+rrents

an$ $irectin

• nstallatin anal'sis

• nstallatin Prce$+res



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• &he la' table



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nstallatin O ngineering



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+,,ar'

What ha!e &e co!ered3

• What it is +se$ fr-

• Where it is +se$-

• * brief l) at the histr'-

•

* er' brief l) at $esign (ith a fc+s n ,an+fact+re-• *n erie( f the installatin prcess-

6roup / points of contact3

• Iannes +lla)sen – Principal ngineer. Flexibles.

*ber$een• Flrian er,anett – @ @hair! risers an$ flexible

s'ste,s base$ in Paris



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8uestions ?



seabe$#t#s+rface

(((-s+bsea7-c,

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An Introduction to Flexible Pipes

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