WELLPLAN: STUDENT GUIDE
Contents:
0 I II III III I# # #I #II #III#III-
Intro Introdu duct ctio ion… n……… ………… ………… ………… ………… …….. .... Start Startin ing g Well Plan Plan…… ………… ………… ………… ………. …. Crea Creati ting ng a New New Well…… ll………… ………… ………… …….. Enteri terin ng the the basi basicc Ino Inor! r!at atio ion… n……… ………. …... $%dr $%draul aulic ics… s……… …….… .……… ………… ………… ………… …… Well We ll Control 'nal%sis…………………… 'nal%sis…………………… Surge 'nal%sis…………………………… )or*ue )or*ue and +rag………………………… Eerci Eercises… ses………… ……………… ……………… ……………… ………..
02 03 04 0" &4 20 2( 0, 2
Written b%/ I'ES)E Student ernando S1inelli er.s1inelli%ahoo.co!
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0 - Introduction
)his sotware is used to si!ulate drilling o1eration. It can either be used to 1lananal%e the 1rosess o building a new site or to e5aluate 1ossible alternati5es in actual 1roble!. )he user user is re*uired to in1ut the data and the sotware has a range o !odules to assess the data. )here are !ain !odules that can be chosen to generate the si!ulations and dierent out1uts. or e5er% !odule %ou !a% ha5e a range o sub!odes to run the anal%sis. )he !odules are/ •
Torque Torque Drag Dra g Analysis / 1redicts and anal%es the tor*ue and aial orces generated b% drill strings6 casing strings6 or liners while running it in 1ulling out6 sliding6 bac7 rea!ing andor rotating in the well bore. )he !ain out1uts o this !odule are the Eecti5e )ension6 )ension6 )rue )ension6 )ension6 )or*ue6 )or*ue6 atigue6 Stress and Side orce gra1hics.
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Hydraulics/ used to si!ulate the d%na!ic 1ressure losses in the rig8s circulating s%ste!6 and to 1ro5ide anal%tical tools to o1ti!ie it. )he !ain out1uts o this !ode are the 9eother!al 9radient and Pressure :oss gra1hics.
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Well Control/ calculates the e1ected inlu 5olu!e6 generates 7ill sheets6 deter!ines !ai!u! sae drilling de1th6 and deter!ines the !ai!u! allowable inlu 5olu!e. )he !ain out1uts o this !ode are Pressure at +e1th6 ;ai!u! Pressure6 'llowable
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Surge/ used or inding surge and swab 1ressures throughout the well bore cause b% 1i1e !o5e!ent. )he )he !ain out1uts are Surge :i!it6 Swab :i!it and )ri1 )ri1 S1eed 5s. ;o5ing Pi1e +e1th gra1hics.
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OptCem/ used to o1ti!ie ce!enting o1erations and !ini!ie the 1ossibilit% o costl% errors. )he !ain out1uts are the Circulation Pressure and Surace Pressure gra1hics.
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Critical Speed: assists with the deter!ination and 1rediction o critical rotation s1eeds that !a% result in da!aging downhole 5ibrations. )he !ain out1uts are the Critical =otational S1eeds6 '11licable orces and ;o!ents gra1hics.
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Bottom Hole Assemly: this !odule 1ro5ides an accurate re1resentation o the orces acting on the asse!bl% as it lies in the well bore. )he !ain out1uts are the Side orce and +is1lace!ent gra1hics.
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Stuc! "ipe: calculates orces acting on the drillstring at the stuc7 1oint. It can be used to deter!ine the location o the stuc7 1oint6 the o5er1ull 1ossible without %ielding the 1i1e6 the !easured weight re*uired to set the >ars and the surace action re*uired to achie5e the desired conditions at the bac7o 1oint.
)o run an% !odule there are so!e basic data that !ust be entered and each one has its own re*uire!ents to run the anal%sis. )he irst ste1 to start the si!ulation is to in1ut the basic
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inor!ation. In order to do that there are 2 o1tions/ whether %ou use a 1re5ious ile which has si!ilar characteristics to the new one or %ou start one ro! the scratch. So!eti!es it !a% see! easier to use a 1re5ious ile6 but e5entuall% there are so!e dierences that !a% be orgotten which could s1oil the anal%sis. Since the ti!e s1ent on in1utting the basic inor!ation is relati5el% short6 it is reco!!ended to start a new well design i %ou are going to si!ulate a well that has ne5er been used beore. )his is a *uic7 guide and will gi5e e!1hasis in 4 !odules/ )or*ue +rag 'nal%sis6 $%draulics6 Well Control and Surge. It will teach %ou how to in1ut the data to run the sotware6 but it does not ha5e detailed e1lanation about how the sotware 1eror!s its anal%sis. or detailed descri1tions o the dierent !odules6 there is a WellPlan !anual a5ailable. )here is one hardco1% o the !anual with ?l5e =as!ussen @
[email protected] and the co!1an% oer online hel1 at
[email protected] . E5er% ti!e %ou need their hel16 %ou should also send the license and 5ersion inor!ation/ Site number: 15409 Name/location: Norwegian U. of Science and Tech. Det. of !etroleum "ngineering and #lied $eoh%&ic& The 'er&ion i&: ("))!)#N *00+.11.0.1 ,"D- *00+.11.0.+,04.1.00.0*5.00
I # Starting Well"lan )he sotware WellPlan is onl% installed in one !achine at IP). It can be ound in the co!1uter lab BS%77el5er7stedet on the base!ent o the institute @!iddle one o the three 1hsing northA. E5er% ti!e %ou star the sotware6 %ou ha5e to in1ut the ollowing inor!ation/ DataSourse:
EDT 2003 single user
User:
edm
Password:
landmark
E5er%ti!e %ou log on to the co!1uter as the sa!e user6 the well that %ou were wor7ing on last ti!e will be a5ailable when %ou start the sotware. Dou can wor7 on the well6 edit it and sa5e it. $owe5er6 i %ou were wor7ing in a ile and %ou want to edit it later as a dierent co!1uter user @or i so!ebod% else will wor7 on that ile laterA6 %ou ha5e to e1ort the inor!ation when %ou are inished6 so the net user can i!1ort it and continue wor7ing on the sa!e ile. )he sa!e thing will ha11en i the sotware is e5entuall% installed in a dierent co!1uter. )o use the sa!e ile on a dierent co!1uter6 %ou ha5e to e1ort is ro! the original co!1uter and i!1ort it to the new one. )here is a sa!1le ile a5ailable @created b% !eA that can be ound in the location C/:and!ar7Sa!1les o the co!1uter where the sotware is installed. Dou >ust o1en the sotware and i!1ort the case @ro! ile !enuA.
II - Creating a $e% Well )here are dierent le5els to describe a well. )he irst le5el is the Co!1an%. When %ou are creating a new well %ou should sa% i it belongs to an eisting co!1an% otherwise %ou will
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ha5e to create a new co!1an%. =ight clic7 on Co!1an% and ollow the dialog. )he sa!e will ha11en with all the dierent le5els a5ailable6 which are Pro>ect6 Site6 Well6 Wellbore6 +esign and Case. In so!e le5els6 there is so!e inor!ation that !ust be entered while %ou are creating a new ile. Felow %ou can chec7 the le5els on which so!e t%1e o data that !ust be entered while creating the ile/ •
Well / when creating a new ile at this le5el %ou !ust enter the inor!ation about de1th reerence.
Dou should deine i the well is onshore6 oshore or subset. +e1ending on the situation %ou !a% ha5e to create a datu! to 1lace the =
Design/ at this stage %ou !ust enter the 1hase at which the well currentl% is. Dou can choose between Protot%1e and Planned.
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In the abo5e igure %ou can see that %ou also ha5e to choose the +e1th =eerence Inor!ation @i !ore than one datu! has been created at the Well le5elA.
III - &ntering t'e Basic In(ormation )he basic inor!ation !ust be entered at the design and case le5els. )his data will be used b% the sotware to si!ulate all the situations 1ur1osed at the dierent !odules. It is etre!el% i!1ortant that these inor!ation is as aithul as 1ossible to actual situation6 since s!all changes at this le5el can be 1ro1agated into considerable changes in the out1uts.
)*+ - Design In(ormation When the design le5el is selected in the Well E1lorer @the window on the let o the screen6 where all the inor!ation about the well is shownA6 4 o1tions beco!e a5ailable on the botto! let corner. )he illustration bellow show the e1ected la%out when %ou are in1utting the basic inor!ation o the design.
WE:: EHP:?=E=
+ESI9N IN?=;')I?N
's %ou can see abo5e6 there are 4 dierent t%1es o basic inor!ation that !ust be entered at the design le5el6 to edit one o the! >ust double-clic7 it/
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Wellpat'/ this is the data about the geo!etr% o the well6 i %ou are not using the data ro! an actual station6 %ou should enter the e1ected !easured de1th @;+A6 inclination and ai!uth at dierent de1ths and sotware calculates the )rue #ertical +e1th6 as well as other characteristics o the geo!etr%.
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"ore "ressure/ here %ou enter the inor!ation about the Pore Pressure at dierent de1thsG
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,racture radient / here %ou enter the inor!ation about the racture 9radient at dierent de1thsG
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eot'ermal radient/ b% clic7ing here a window will o1en and %ou will ha5e to enter the surace6 !udline and well te!1eratures. I %ou want6 %ou can >ust enter the te!1eratures at dierent de1ths. It is i!1ortant to 7now that the te!1erature here is the or!ation te!1erature.
)*. # Case In(ormation When the case le5el is selected in the Well E1lorer6 3 o1tions beco!e a5ailable on the botto! let corner. )he 1rocedure to edit the! is the sa!e as the design le5el. )he o1tions here are/ •
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Hole Section/ here %ou describe the well geo!etr%. Dou can choose between casing6 o1en hole6 riser or tubing and enter the de1ths at which the% ta7e 1lace. When %ou choose a casing6 or ea!1le6 %ou ha5e to enter the no!inal weight6 no!inal dia!eter and grade. 'ter %ou ha5e in1ut the data6 %ou still can edit the characteristics6 such as inner dia!eter6 riction actor6 linear ca1acit%… It is i!1ortant to enter the inor!ation as 1recisel% as 1ossible because the hole section characteristics will be used to calculate out1uts ro! the dierent !odules. Assemly/ $ere %ou in1ut the inor!ation about the drill string.
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's %ou can see6 or e5er% co!1onent o the string %ou should choose its 1ro1erties. WellPlan has a catalogue o 1ossible co!1onents and %ou can choose ro! a range o o1tions. So!eti!es the one %ou are loo7ing or is not in the catalogue6 and then %ou can choose the closest one and edit the 1ro1erties that dier ro! the one in the catalogue. or e5er% co!1onent %ou should also enter the length6 and since %ou ha5e the total length @that %ou !ust in1utA6 the sotware calculates the length o re*uired drill 1i1e ro! the =
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,luid/ $ere %ou should enter the luid data. Dou can add !ore than one luid and choose which one is circulating at dierent situations.
)here are so!e 1ro1erties that !ust be entered. ?n the to1 right6 %ou !ust enter luid densit%6 t%1e6 base and choose the rheolog% !odel used. Dou should also in1ut the low line te!1erature6 1lastic 5iscosit% and %ield 1oint. ?nce %ou ha5e entered the design and case inor!ation %ou are read% to choose ro! one o the !odules or %our anal%sis. In the net 1ages %ou will get instructions on how to o1erate the dierent !odules. ust re!e!ber that the basic inor!ation has a great i!1act on the gra1hics out1ut and i the outco!e 1lot diers ro! the e1ected 1lot there is 1robabl% so!ething wrong in the basic inor!ation. So!eti!es it is necessar% to loo7 or the error b% ins1ection6 editing the inor!ation to chec7 or the i!1act o the change in the 1lot.
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I/ # HD1A23ICS Fesides the basic inor!ation6 there are other tables that !ust be illed so the sotware can run the h%draulics anal%sis. Felow %ou can see the table with the dierent !odes on the irst colu!n and each BH sa%s the re*uired tables to run the !ode. Dou can edit so!e tables b% clic7ing BCase on the !enu bar. So!e other tables can be edited b% clic7ing on BPara!eters on the !enu bar. 't this !odule %ou can choose between &2 !odes/ • • • • • • • • • • •
Pressure/ Pu!1 =ate =angeG Pressure/ Pu!1 =ate iedG 'nnular #elocit% 'nal%sisG SwabSurge )ri11ing ScheduleG SwabSurge Pressure and EN+G 9ra1hical 'nal%sisG ?1ti!iation PlanningG ?1ti!iation Well SiteG Weight u1G $ole Cleaning ?1erationalG $ole Cleaning Para!etricG
% t i c i r t n e c c "
m e t & % S g n i t a l u c r i 0
& h t e D D 0 "
& e t a 1
& e c i 2 e D f f o d n a t S
!re&&ure: !um ate ange
!re&&ure: !um ate i6ed
#nnular 'elocit% #nal%&i&
a t a D & n o i t a r e 3
Swab/Surge Triing Schedule
Swab/Surge !re&&ure and "D
$rahical #nal%&i&
3timi7ation !lanning 3timi7ation (ell Site (eight U
& t i m i ) m u !
& n i a r t & n o 0 n o i t u l o S
a t a D & i & a % l t a a a t n a D # D t e U r t o i t S h & l g l i n e e a r ( ( T
8ole leaning 3erational
8ole leaning !arametric
4*+ - &ccentricity
$ere %ou can edit the inor!ation about the eccentricit% i %ou ind it i!1ortant to the anal%sis. 4*. # Circulating System ?n the Surace E*ui1!ent tab %ou should t%1e in the Surace E*ui1!ent =ated Wor7ing Pressure and the Pressure :oss6 which can be t%1ed in or calculated b% the sotware.
?n the ;ud Pu!1s tab %ou in1ut the 1ara!eters o the !ud 1u!1s and whether the% are acti5ated or not. 4*) # &CD 5&qui6alent Circulating Density7 Dept's $ere %ou can enter u1 to ( !easured de1ths on which %ou would li7e to ha5e the EC+ calculated b% the sotware.
4*4 # 1ates In this table %ou !ust enter the range o low rates to be anal%ed. or ea!1le6 i %ou enter the !ini!u! rate 263 ! 3!in6 the !ai!u! 36J ! 3!in and the incre!ent 1u!1 rate at 062 !3!in6 that !eans that the sotware will 1eror! the anal%sis assu!ing the 1u!1 rate will
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5ar% between 263 and 36J ! 3!in within an incre!ent rate o 062 @it will anal%se 263 !3!in6 then 26( ! 3!in6 then 26J ! 3!in … until 36J ! 3!inA. It is also i!1ortant to in1ut the Noles characteristics. Dou can do that b% clic7ing on the noles icon on the botto! right. )here %ou can either >ust t%1e in the )' or %ou can t%1e in the nole inor!ation and the sotware will calculate the )' or %ou.
4*8 # Stando(( De6ices )his is a11licable on wells that use stando de5ices6 such as riction reduction de5ices. In that case6 %ou !ust enter the characteristics o the de5ice.
4*9 # Operations Data $ere %ou enter the inor!ation to s1eci% the conditions %ou want to use to calculate a SurgeSwab )ri11ing Schedule6 Pressure and EC+. In both o1erations %ou ha5e to enter the !ai!u! 1ressure change that will be allowed during the tri11ing out o the hole.
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4* # "ump 3imits $ere %ou t%1e in the !ai!u! 1u!1 1ressure and the !ai!u! 1u!1 1ower. 4*; # Solution Constrains )his dialog uses the in1ut data to calculate the 1u!1 rate to !ai!ie bit h%draulics6 the bit >et i!1act orce6 the !ini!u! annular 5elocit% and the o1ti!u! )'. 4*< # Well Site Data )his dialog gi5es %ou inor!ation about reco!!ended low rate and )' to !ai!ie h%draulic horse1ower. 4*+0 # Weig't up Data )his dialog returns the nu!ber o sac7s re*uired to weight u1 the !ud using the in1ut conditions.
4*++ # Transport Analysis Data )his dialog is used to s1eci% the anal%sis 1ara!eters that will be used or $ole Cleaning. Dou !ust enter the =?P6 rotar% s1eed and 1u!1 rate. Dou can also in1ut additional inor!ation6 such as cuttings dia!eter and densit%6 bed 1orosit% and ;+ calculation inter5al.
/ # W&33 CO$T1O3 A$A3SIS )his !odule can be used to calculate the e1ected inlu 5olu!e6 assist with casing design to handle 1ressure associated with 7ic7s6 generate 7ill sheets6 deter!ine !ai!u! sae drilling de1th and !ai!u! inlu 5olu!e allowed. )he well control !odule has 3 dierent !odes/ •
&=pected In(lu= /olume / 1redict the 5olu!e o an inlu while drilling or ater 1u!1 shut downG
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>ic! Tolerance/ si!ulate the circulation o a 7ic7 while drilling6 a swab 7ic7 or ater the 1u!1s ha5e shut downG • >ill S'eet/ *uic7l% generation o a stand1i1e 1ressure scheduleG Fesides the basic inor!ation6 there are other tables that !ust be illed so the sotware can run the Well Control 'nal%sis. Fellow %ou can see the table with the dierent !odes on the irst colu!n and each BH sa%s the re*uired tables to run the !ode. Dou can edit so!e tables b% clic7ing BCase on the !enu bar. So!e other tables can be edited b% clic7ing on BPara!eters on the !enu bar. •
n o i t u i b r u t t & e i S D l e r o r u t t n a r o 0 e l l m e e ( T
n o i t a n i m r e t e D & & a l 0 ; c i :
n o i t a m i t & " e m u l o ' 6 u l f n < =1
m e t & % S g n i t a l u c r i 0
e c n a r e l o T ; c i :
"6ected
=
ic; Tolerance
ill Sheet
HK / this table is onl% re*uired i the well is s1eciied as oshore and subsea. HK& / this dialog is onl% a5ailable i the 7ic7 class is 7ic7 while drilling
8*+ # Well Control Setup $ere %ou ha5e two tabs/ Cho7e
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Driller?s: the 1ressure data onl% 5alid or the second circulation6 i.e. when the 7ill !ud is 1u!1ed down the string to the bit. Wait and Weig't: the 1ressure data is based on the assu!1tion that the 7ill !ud is 1u!1ed down the string while the 7ic7 is circulated outG
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8*. # Temperature Distriution Dou use this dialog to in1ut inor!ation about the string and annulus te!1erature. $ere %ou can choose between three dierent te!1erature !odels/ •
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Steady State / this !odel 1eror!s a heat transer calculation between the luids in the annulus and the luids in the string to deter!ine their res1ecti5e te!1erature 1roileG 2ndistured Temperatures / this !odel assu!es the annulus and string te!1erature 1roiles are identical to the or!ation te!1erature 1roile @set in the 9eother!al 9radient6 one o the basic inor!ationAG Constant Temperature / this !odel assu!es the !ud is one te!1erature through the entire wellbore and stringG
8*) # >ic! Class Determination )his dialog is used to calculate the botto! hole 1ressures6 inlu 5olu!e6 and 7ic7 tolerance and 7ic7 t%1e at the !o!ent an inlu ta7es 1lace. )he initial !ud gradient reers to the !ud in the well when the 7ic7 occurred @the deault is the one set in luid editorA. )he circulation low rate is the 1u!1 rate during drilling 1rior to the inlu and the 7ic7 inter5al gradient is the 1ore 1ressure o the or!ation that 1roduced the 7ic7.
)he Luic7 :oo7 gi5es %ou the 7ic7 characteristics as a result o the 5alues %ou in1ut. )here are 3 t%1es o 7ic7 class/ •
>ic! W'ile Drilling/ when a 7ic7 is ta7en while drilling6 the 1ore 1ressure is higher than the d%na!ic botto! hole 1ressure6
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>ic! A(ter "ump S'ut Do%n/ when a 7ic7 is ta7en ater the circulation 1u!1s ha5e been shut down6 the 1ore 1ressure is lower than the d%na!ic botto! hole 1ressure but higher than the static hole 1ressureG S%a >ic! / when a 7ic7 is ta7en while tri11ing out o the hole6 the 1ore 1ressure is higher than the static botto! hole 1ressureG
8*4 # Circulating System ?n the Surace E*ui1!ent tab %ou should t%1e in the Surace E*ui1!ent =ated Wor7ing Pressure and the Pressure :oss6 which can be t%1ed in or calculated b% the sotware.
?n the ;ud Pu!1s tab %ou in1ut the 1ara!eters o the !ud 1u!1s and whether the% are acti5ate or not. 8*8 # >ic! Tolerance )his dialog is used to si!ulate the circulation o an inlu ta7en while drilling or ater 1u!1 shut down. or a swab 7ic76 tri11ing the wor7 string bac7 to the botto! o the hole is si!ulated. In this scenario6 a worst case situation o 1assing the inlu bubble with the F$' is anal%ed at e5er% de1th.
't this dialog6 %ou will be able to see the set u1 inor!ation6 which has been set in the
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Type o( In(lu=/ %ou can choose between gas6 oil and salt water. >ill 1ate/ the low rate that will be used to circulate out the inluG Total In(lu= /olume / %ou can either use the 5alue calculated in the Esti!ated Inlu #olu!e !ode or %ou can in1ut another 5alueG Dept' o( Interest / the de1th in the well that %ou are interested in anal%ing @casing shoe de1th is co!!onl% usedAG >ill @ud radient/ +ensit% transor!ed into 1ressure 1r !. Dept' Inter6al to C'ec! / the inter5al o de1th on which the anal%sis will be !adeG
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8*9 # In(lu= /olume &stimation )his dialog is used to s1eci% inor!ation re*uired to deter!ine the 5olu!e o the inlu. )his 5olu!e de1ends on the 7ic7 detection !ethod6 reser5oir 1ro1erties6 crew reaction ti!es6 and the 7ic7 class @which was deter!ined using the
It is di5ided into ( tabs6 which !ust be e1lained in5iduall%/ Setu16
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Setup/ %ou cannot edit the inor!ation on this tab. )his is the su!!ar% o the
ic! Determination @et'od / deine the t%1e o 7ic7 detection in use. Dou can choose ro! low rate or 5olu!e 5ariations !ethods. )his inor!ation is used to hel1 deter!ine the inlu sie. or the low rate #ariation !ethod %ou !ust enter the !ini!u! low dierence that can be detected between the low rate in and the low rate out. or the #olu!e #ariation !ethod6 %ou !ust enter the !ini!u! increase in 1it 5olu!e that can be 1racticall% detected. Since there is a dela% between the actual change and the detection6 %ou !ust also in1ut a +etection )i!e +ela%G 1eser6oir / this tab deines the reser5oir 1ro1erties used to deter!ine the sie o the inlu. 't this tab %ou ha5e ( 5alues to in1ut/ "ermeaility: • • "orosity: • T'ic!ness: the total !easured de1th thic7ness o the reser5oir @ not a5ailable or 7ic7 'ter Pu!1 Shut +ownAG • 1ate o( "enetration: =?PG • &=posed Heig't: the !easured de1th length o the reser5oir that has been drilled @onl% a5ailable or
/I # Surge Analysis )his !odule is used or inding surge and swab 1ressures throughout the well bore caused b% 1i1e !o5e!ent. It can be useul or well 1lanning o1erations when surge 1ressures need to be
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controlled and when well 1roble!s occurred that were related to 1ressure surges. )his anal%sis sol5es the ull balance o !ass and !o!entu! or 1i1e low and annulus low. )his !odule oers 2 dierent o1tions o anal%sis/ •
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Steady State / easier and aster calculation6 howe5er it is not reco!!ended or critical anal%sis6 since the transient surge 1ressure is !ore accurate. Transient pressure/ this !odel has se5eral eatures that a stead%-state !odel does not ha5e6 such as co!1ressibilit%6 storage @the a!ount o luid entering the well is not necessaril% the a!ount eitingA6 elasticit% and inertia.
)here are so!e tables that !ust be illed so the sotware can run the si!ulation. )he tables are/ or!ation 1ro1erties6 ce!ent 1ro1erties6 eccentricit%6 >ob data and o1erations data. 'lso6 the sotware has 2 dierent !odes/ SurgeSwab and =eci1rocation. Foth !odes use al!ost the sa!e data6 but the ?1erations +ata diers. 9*+ # ,ormation "roperties S1eci% the 1ro1erties o the or!ation i %ou ha5e it a5ailable. I %ou do not s1eci% the data in this table6 deault 5alues o &.4( H &0 " 1si or Elastic ;odulus and 0.3 or Poisson8s =atio will be used. )his data is used to calculate the co!1ressibilit% o the or!ation. 9*. # Cement "roperties S1eci% the elastic 1ro1erties o the set ce!ent behind the casing. I %ou do not ill this table6 the sotware will assu!e that the ce!ent 1ro1erties are the sa!e as the or!ation 1ro1erties @J.&A.
9*) # o Data Msed to deine crucial >ob inor!ation such as tracer luid t%1es6 rate6 5olu!e6 and 1lace!ent or each luid in the ce!enting >ob or a surge 1ressure anal%sis. It should be used or surge anal%sis while ce!enting or i 1u!1ing while tri11ing.
9*4 # Operations Data (or SurgeS%a S1eci% the t%1e o o1erations %ou want to anal%e6 %ou !ust select its t%1e b% choosing an o1tion between Swab and Surge. 'ter %ou ha5e chosen the t%1e o o1eration6 %ou can edit its details. It is also 1ossible to s1eci% +e1th o interest @such as casing shoeA6 where co!1lete anal%ses are 1eror!ed.
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)he details de1end on the t%1e o o1eration. $ere %ou s1eci% 1ara!eters such as tri1 s1eeds6 acceleration rates and deceleration rate. Dou can also s1eci% whether loats and o1ti!ied tri1 ti!es should be included in the o1eration. F% chec7ing the ?1ti!ie )ri1 )i!e bo %ou can calculate the !ai!u! s1eed the 1i1e can be tri11ed. 9*8 # Operations Data (or 1eciprocation $ere %ou in1ut the details o the reci1rocation o1eration. Dou s1eci% acceleration and deceleration rates. Dou can also s1eci% whether loats should be included in the o1erationG s1eci% stro7e length6 stro7e rate6 luid t%1e6 and low rate in the ields 1ro5ided. ust 7ee1 in !ind when %ou deine the 5elocit% 1roile data @stro7e length and rateA6 that i the !o5ing 1i1e a11roaches within 20 eet o the current !easured de1th o the well6 the anal%sis de1th is bac7ed o ro! the well botto! b% 20 eet 1lus the length o one stro7e beore the reci1rocation anal%sis begins. It is also 1ossible to s1eci% +e1th o interest @such as casing shoeA6 where co!1lete anal%ses are 1eror!ed.
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/II # Torque and Drag Fesides the basic inor!ation6 there are J other tables that !ust be illed so the sotware can run the tor*ue and drag anal%sis/ tor*ue drag setu16 !ode data6 luid colu!n6 stando de5ices6 calibration data6 actual loads and run 1ara!eters. Dou can edit the tor*ue drag setu1 b% clic7ing BCase on the !enu bar. )he other tables can be edited b% clic7ing BPara!eters on the !enu bar. Dou can choose ro! 4 dierent !odes/ Nor!al 'nal%sis6 Calibrate riction6 +rag Chart and )o1-down 'nal%sis. In this guide we will ocus on the Nor!al 'nal%sis.
;?+E SE:EC)I?N
Each !ode re*uires dierent data to be illed. In the table bellow %ou can chec7 which dialog is re*uired or each !ode
&
u t e S g a r D d n a e u > r o T Normal #nal%&i&
alibrate riction
Drag hart Todown #nal%&i&
a t a D e d o -
n m u l o 0 & d i u l 5
& e c i 2 e D f f o d n a t S
a t a D n o i t a r b i l a 0
& d a o ) l a u t c #
& r e t e m a r a ! n u 1
?n the ollowing ite!s there will be a general e1lanation on how to ill the dierent dialogs. *+ - Torque and Drag Setup
)he !ost i!1ortant inor!ation that !ust be entered at this stage is the )ra5elling 'sse!bl% Weight @)'WA. )he rest %ou can >ust lea5e as deault6 unless %ou need to 1eror! a 1articular anal%sis. )he )'W can be calculated b% the total weight o the string !inus the buo%ant orce !ade b% !ud on the string. )he Contact orce Nor!aliation :ength is the distance that %ou want the contact orce to be re1orted or. +etailed e1lanation about the !eaning o e5er% chec7 bo can be ound on the WellPlan ;anual. Since the ob>ecti5e o this guide is to gi5e a *uic7 orientation on how to 1rocedure with WellPlan6 those 7ind o e1lanation would s1oil its 1ur1ose. *. # @ode Data
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$ere %ou choose the data that will be used in the anal%sis. F% chec7ing the boes on the let %ou choose i %ou want the sotware to run the si!ulation o the action described. Dou also ha5e to in1ut the Weight on Fit @W?FA and the tor*ue at the Fit. )he sotware assu!es that when the asse!bl% is tri11ing its rotational s1eed is ero. Fut %ou can change that b% t%1ing in its rotational s1eed. *) # ,luids Column *4 # Stando(( De6ices and *8 # Actual 3oads
are sel e1lanator% !odules where %ou >ust ollow the dialog. *9 # Caliration Data
Msed to s1eci% the 1ara!eters re*uired to calibrate the coeicients o riction. )he calculation can be !ade using 2 !ethods/
20
•
•
2sing Actual 3oad/ Dou !ust ill in the actual load dialog and be sure to chec7 the BMse 'ctual :oad bo. ?n that !ethod the calculated coeicient o riction is based on the selected !easured weights and tor*ue 5aluesG 2sing Input /alues / Dou !ust enter at least one o the ollowing/ tri11ing out !easured weight6 tri11ing in !easured weight or rotating o botto! tor*ue. )he calculated coeicient o riction is based on the selected 5alue entered or the s1eciied bit ;easured +e1th. )o use this !ethod %ou do not to chec7 the BMse 'ctual :oad bo.
* # 1un "arameters ?n this dialog %ou indicate the de1th inter5al that %ou want to anal%e. Dou also select the o1erational !odes %ou want to anal%e6 the orces acting at the botto! o the wor7 string or each o the o1erational !odes and the coeicient o riction %ou want to use.
*; # Analysis )he anal%sis can be !ade through dierent 1lot o1tions. Dou ha5e to clic7 on B#iew at the !enu bar and choose BPlot to chec7 all the o1tions a5ailable. Dou can also ha5e access to tables containing the data o the si!ulation b% choosing the B)able o1tion on the B#iew !enu. *< # Troules'ooting •
I the sotware is not able to 1eror! the si!ulation it will show an error !essage located on the status !enu6 on the botto! o the screen. F% reading the !essage %ou should be able to locate the error and i it.
•
I the 1lot outco!e diers ro! the e1ected6 there are a ew things %ou can test. )he basic is to chec7 the 5alues o the inner dia!eter o hole and the outside dia!eter o the string. )he best thing to do is to search or the error b% ins1ection. or ea!1le6 increase the 5alue o the inner dia!eter o the o1en hole and chec7 the i!1act o the change on the 1lot.
/III - &=ercises Statoil was drilling a well located in the iled 9ulla7s. )he well started to be drilled on une &st &,,J and the drilling 1hase was acco!1lished on No5e!ber &( th &,,J. +uring the drilling 1rocess the% aced so!e 1roble!s6 such as 7ic7s. )he basic inor!ation will be the sa!e or all the eercises6 and it can be ound below. 'ter %ou ha5e entered the basic inor!ation6 in1ut the data or the dierent eercises and run the si!ulation. Basic In(ormation: Well Design Pore Pressure:
2&
Fracture Pressure: )he !ost sensiti5e location so ar is the &3 3 casing shoe6 where the acture 1ressure is &JJ0 7g! 3 Geothermal Gradient:
Statoil was drilling a well when a 7ic7 occured. Fellow %ou can see the basic inor!ation o the well and the descri1tion o the 7ic7. In1ut all those 1ara!eters into the :and!ar7 WellPlan and run the si!ulation o the 7ic7. Wellpath: MD (m)
INC (°)
AZ (°)
**+?*
1*?+
100
+5
1*?+
100
114?5
@?4
110?
22
15@5
@?4
110?
194
A?@4
110
*+4+
9?1
11+?1
*@0
?A
11+?1
+01A
?9
11+?@
Basic Information: Case
ole !ection:
340.4, !!
Fluid: Den&it% Ba&eT%e heolog% -odel Temerature !la&tic 'i&co&it% Eield !oint
1A*0 ;g/m+ (ater Bingham !la&tic 0 C +@ !a=& 1A !a
Bottom ole "ssem#l$ %not to scale&:
23
&=ercise +:
While drilling the well described abo5e6 a 7ic7 occurred. Considering that there was no !ud circulating at the !o!ent o the 7ic76 the 7ic7 Inter5al gradient was &"6 2 7Pa! and assu!ing the te!1erature is deined b% the 9eother!al 9radient6 answer the ite!s bellow/ aA What 7ind o 7ic7 was it bA Plot the ;ai!u! 'nnulus PressureG cA Plot the 'nnulus Pressure at the botto! as unction o Inlu #olu!eG dA Plot the or!ation Frea7down 9radient in the ?1en $oleG &=ercise .:
Considering the Pu!1 low =ate as 36 "( ! 3!in6 the Weight on Fit as &4J6 & 7N6 the )or*ue at Fit as 33000 N.!6 the tri11ing s1eed @non rotatingA as &62, !!in6 and the )ra5elling 'sse!bl% Weight as ,64 7N6 answer the ite!s below/ aA Plot the )or*ue +rag Eecti5e )ension 9ra1hG bA Plot the )or*ue +rag )rue )ension 9ra1hG cA Plot the )or*ue +rag atigue 9ra1hG dA Plot the Nor!al )or*ue 9ra1hG
&=ercise ):
Consider the ;ini!u! Pu!1 low =ate as 26 3 ! 3!in6 the Incre!ent Pu!1 =ate as 06&( !3!in and the ;ai!u! Pu!1 =ate as 36"( ! 3!in6 the ;ai!u! Pu!1 Pressure as 300007Pa and the ;ai!u! Pu!1 Power as &2(0 7W. )he EC+ de1ths should be e5er% &000 ! and at the botto! o the well and the Surace E*ui1!ent =ated Wor7ing 1ressure should be set at 32000 7Pa. Msing the $%draulics !odule and the Pu!1 =ate =ange !ode6 answer the ite!s below/ aA Plot the Pressure :oss 9ra1hG bA 'ccording to the gra1h6 what would ha11en i the low rate was set 26 3 !3!in
24
cA 'ccording to the gra1h6 what would ha11en i the low rate was set 36 "( !3!in dA Plot the 9eother!al 9radient 9ra1hG
2(
