TI MEALL OTTED:1hour Q1. Wha ti smea nt byPRI MARYWELLCONTROL?
a.Theus eofBl owOutpr ev ent er st oc l os ei nawel l t hati sfl owi ng b.Thes l owCi r c ul at i ngRat ePr es sur eus edi nt hek i l l pr oc es s c .Theus eofMudHy dr os t at i ct obal anc efl ui dpr es s ur esi nt hef or mat i on d.Th eus eo fPi tVo l u mean me dFl o wr at eme as ur i ngd ev i c est or ec og ni z eak i c k
Q2. I na no pe nwel l wi t hg asc utmudwhe ni sbo t t om ho l epr e ss ur er edu cedt he
most ? a.Whent hegasi satt hes ur f ac e b.Whent hegasi satbo t t om c .Wh ent heg asi satt hec as i n gs h oe Q3. Wheny ouwoul dc ons i dert ak i ngas l owc i r c ul at i ngr at epr es s ur e?
( Sel ec tt woa ns wer s ) a.Onl yaf t erdr i l l i ngoutc as i ngs hoe b.Atbegi nni ngofeac hs hi f t c .Ev e r yt i memudd en s i t yi sc ha nged d.I mmedi at el yaf t erc ement i ng Whi c hoft hef ol l owi ngpar amet er sar er equi r edf orac cur at ef or mat i ons t r engt h? Q4. ( Sel ec tt hr eeans wer s ) a.Ac c ur at epumps t r ok ec ount er . b.Ac c ur a t epr e ss ur eg auge . c .Ex ac tmuddens i t y . d.Hy dr os t at i cpr es sur ei nc as i ng. e.Ac cur at ehol ec apac i t y . f .Meas ur eddept hofc as i ng.
Q5. Whi c hf ac t or sc ani nc r eas epr es s ur es ur geswhi l er unni ngi n?
( Sel ec tf ourans wer s ) a.Lar geannul arc l ear anc e b.Smal l annul arc l ear anc e c .Hi g hv i s c o usmu d d.Runni ngi natf as ts peed e.Lar ges i z enoz z l es f .L owv i s c o usmu d g.Ru nni ngi nats l o ws pe ed h.Bal l edups t abi l i s er s Whi c hoft hef ol l owi ngs t at ement sar ec ons i der edt obegoodoper at i ngpr ac t i c es Q6. i nTOPHOL Ewh er et h er ei sar i s kofg asb ea r i n gf or ma t i o n? (Se l e ctt woa ns wer s) a.Ci r c ul at i ngwhi l epul l i ngoutoft hehol eont r i ps b .Us eah i g hd en s i t ymu dt oc r e at ema x i mu mo v e r b al a nc e c .Dr i l l api l othol e d.Mai nt ai nhi ghr at esofpenet r at i ont oens ur emudv i s cos i t yl ev el i sashi ghas pos s i bl e e.Regul ar l ypumpf r es hwat erpi l l t or emov et hec ut t i ngsf r om t hehol e Q7. Whi c hoft hef ol l owi ngc ondi t i onshel pi ns el ec t i ngk i l l r at e?
( Sel ec tt woa ns wer s ) a.Capac i t yofk i l l mudpr epar at i on b.T r i pt ankv ol ume c .Vol umehandl i ngc apac i t yoft hec hok e d.For mat i onpr es s ur e Q8. I ft hemudwei ghti si nc r eas eddur i ngdr i l l i ngwhatwi l l happent ot heMAASP?
a.MAASPwi l l i n cr eas e b.MAASPwi l l r emai nsame c .MAASPwi l l d ec r e as e Q9. Whi c honeoft hef ol l owi ngi st hemos tr el i abl ei ndi c at i ont hatawel l i sflowi ng?
a.i nc r eas ei nt or que b.Gasc utmud c .De c r e as ei npu mppr e s s ur e d.I nc r eas ei nfl owr et ur ns l ec tt her oduc t sc ommonl us edt opr ev entt hef or mat i onofh ydr at es ? Q10.Se ( Se l e c tT woAn s we r s ) a.Gl y col . b.Ca r b ox yMe t h y lCel l ul os e ( CMC) . c .Wa t e r d.Met hanol Q11.Whi c hoft hef ol l owi ngpos s i bl ewar ni ngs i gnsi ndi c at et hatwel l ma ygounder
ba l an ce ?( Se l ec tt woan swer s ) a.I nc r eas ei npumppr es s ur e b.Changei ncut t i ngs i s i z e&s hape
c .Reduc t i oni nr at eofpenet r at i on d.I nc r eas ei ndr i l l edgasper c ent age e.I nc r eas ei nwei ghtonbi t tc anbes ai dt hatc l os i ngi nt hewel l pr ompt l yi soneoft hemos ti mpor t ant Q12.I dut i esofaDr i l l er .Anydel aymaymak et hewel l pot ent i al l ymor edi ffic ul tt ok i l l .Fr om t hel i s ts hownbel ow,t i c kt hemos tl i k el ypr ac t i c eswhi c hc anl eadt oani nc r eas ei n t hes i z eoft hei nfl ux : ( Sel ec tt hr eeans wer s ) a.Swi t c hi n go fft h efl o w me t era l ar ms b.Regul arbr i efi ngf ort heDer r i c kmanonhi sdut i es c .Dr i l l i ngaf ur t her15f eetaf t eradr i l l i ngbr eak ,bef or efl owc hec k i ng d.Runni ngr egul arpi tdr i l l sf ordr i l l c r ew e.T es t i ngs t ab—i nv al v esdur i ngBOPt es t s f .Cal l i ngt ool pus hert ofl oorpr i ort os hut —i nt hewel l i c ki sbei ngc i r c ul at edoutat35SPM,Dr i l l Pi pePr es sur er eads650ps i , Q13.Ak an dCas i n gPr es s ur e1 05 0ps i .I ti sd ec i d edt os l o wt h ep umpt o30SPM wh i l e ma i nt ai ni ng1 05 0ps i o nt hec as i ngg au ge. Ho w wi l l t h i saff ec tbo t t om h ol epr e ss ur e( Ex c l u dea nyECDeff ec t)? a.I nc r eas e b .De c r e as e c .St a yt h es a me d.Nowayoft el l i ng er eas ons huti nc as i ngpr es sur ei sus ual l yhi ghert hant hes hut i ndr i l l pi pe Q14.Th pr e ss ur ei sbec a us e? a.Thec ut t i ngi nt heannul usar el i ght er ,t her ef or ec r eat i ngal i ght erhy dr os t at i ci nt he a nn ul u s
b.Thei nfl uxi sus ual l yl es sdens et hant hee xi s t i ngmudwei ght c .Thec as i ngpr es sur ei snotnec es sar i l yhi gher ,i tdependsonwhet heri ti san o ff s ho r eor l andoper at i on d.Theonl ydi ff er enc ei si nt heg augesus ed t ers hut t i ngi nonak i c kt heSI DPPandSI CPhav es t abi l i z ed,t hent he ybot h Q15.Af s t ar ts l owl yr i s i ngbyt hes ameamount .Whati st hepr obabl ec aus e? a.Af ur t heri nfl uxi soc c ur r i ng b.Thei nfl uxi sgas8.mi gr at i ngupt heWel l Bor e c .Thegaugesar ef aul t y d.Th eBOPs t ac ki sl e ak i ng l ec t3c ondi t i onswhi c hy ouf eel wi l l i nc r eas et her i s kofex ceedi ngt he Q16.Se MAASPdur i ngawel l k i l l oper at i on? a.Smal l di ff er e nc ebe t weenf o r mat i o nb r eak d ownpr es s ur eandmu dh y dr os t at i c p r e s s u r e b.L ar g edi ff er en cebe t we enf or ma t i o nsb r ea k sdo wnp r es s ur ean dmu dh y dr os t a t i c p r e s s u r e c .Longopenhol es ec t i on d.Shor topenhol es ec t i on e.Lar gei nfl ux f .Smal l i nfl ux Q17.Fo reac hoft hef ol l owi ngs t at ement st i c kwhet heri tr el at est ot heDr i l l er ’ s
me t h odort h eWa i ta ndWe i g htme t h od . a.Re mo v ei nfl uxf r o m wel l b ef or ep umpi ngk i l l mu d Dr i l l er ’ sOR Wai tandWei ght b.Pumpk i l l mudwhi l s tc i r c ul at i ngi nfl uxupt heannul us Dr i l l er ’ sOR Wai tandWei ght
Q18.What i st heappr o xi mat epr es s ur epul s et r av el r at ei nt hemud?
a.4. 5f t / s ec b.750f t / mi n c .1000f t / s ec s houl dbedonewhenc ompl et el os sofr et ur noc c ur swhi l edr i l l i ng7 Q19.What a.Pumpheavymudi nt heannul us b .Pumpc eme nti nt ot h ea nn ul u s c .Pr e pa r et opu mpL CM i mme di a t e l y d.Fi l l andt opupt heannul uswi t hl i ght erfl ui dav ai l abl e( e. g.wat er )moni t or i ngand pr oper l yr ec or di ngt hev ol umefi l l edi n. l i ss hut i nSI DPPi sr ec or dedbutSI CPgaugei sbr ok e n, whi c hoft he Q20.Wel f ol l owi ngpr es sur ec annotbec al c ul at ed? a .Ca s i n gSh oePr e s s ur e b.For mat i onPr es s ur e c .Bo t t om Ho l ePr es s ur e d.I ni t i al c i r c ul at i ngPr es s ur e nt her ear emor ec ut t i ngsi nt hes ys t em,whi c hoft hef ol l owi ngi st r ue? Q21.Whe a.I twi l l i nc r eas et hedi ff er enc ebe t weenSI CP8.SI DPP b.I twi l l dec r eas et hedi ff er enc ebet weenSI CP8.SI DPP c .I twi l l ha v enoeff ec tonSI CP8.SI DPP c hoft hef ol l o wi ngc oul dbet hei mmedi at eeff ec tofs wabbi ng? Q22.Whi a.l nc r eas ei nBot t om Hol ePr es s ur e b.Ak i c k c .Reduc t i oni nBot t om Hol ePr es s ur e d.Los tc i r c ul at i on.
Q23.Du r i ngwel l c ont r ol oper at i on,powerf ai l ed8.wel l i ss huti n. Af t ers omet i me
bo t hSI CPa ndSI DPPs t a r t edr i s i ng.T oma i nt ai nBHPc ons t a ntwh i c hpr es s ur ei st o b ema i n t a i n ed ? a.SI DPP b.Sl CP c .I nfl uxPr es s ur e d .Ca s i n gSh oePr e s s ur e Q24.Youar epul l i ngout ,af t er15s t andsi twasf oundt hatt hehol ei snott ak i ng
pr ope ra moun tofmu d.Wh ata ct i o ny o uar egoi ngt ot ak e ? a.Shuti nt hewel l b.Runbac kt obo t t om c .Pu l l o uta no t h er5s t a nda ndfl o wc hec kag ai n d.Fl owc hec ki fnegat i v er unbac kt obot t om andc i r c ul at eoutmoni t or i ngr et ur ns e.Cont i nuepul l i ngout ft hepi tl ev eIi nc r eas eswhent hepumpsar eoff,buts t ay sc ons t antwhent he Q25.I pu mpsa r er un ni n g” .Wha ti st hepr ob l em? a.Annul arpr es s ur el os s esar egi v i nganov er bal anc eagai ns tf or mat i onpr es s ur e. b.Mudhy dr os t at i c pr es s ur ei sgr eat ert hanf or mat i onpr es s ur e. c .Th ep ump sne edt ob er e pa i r e d. d.Pumppr es s ur ei sgr eat ert hanmudh ydr os t at i cpr es s ur e. Q26.Ki l l r at ec i r c ul at i ngpr es sur ear et ak enatdi ffer entpumpr at e( SPM) .Whi c hone
oft hef ol l o wi ngs houl dbeus edt odet er mi net hemax i mum pumpr at et ous et ok i l l t hewel l ?
a.Mud/ Gass epar at orl i mi t . b.Si z eoft hec as i ng. c .Dept hoft hec as i ngshoe. c hi snott hei ndi c at i ont hatwel l maybek i c ki ng? Q27.Whi a.I nc r eas ei nfl owr at e b .De c r e as ei np umps t r o k e c .De c r e as ei npu mppr e s s ur e d.Pi tgai n c hoft hef ol l owi ngf ac t or swi l l affec tt heMAASP? Q28.Whi ( Sel ec tt woa ns wer s ) a.Casi ngShoeDept h b.Di amet erofc as i ng c .ShoeFr ac t ur es t r engt h d.Wat erl os s e .Ma x i mu ma l l o wa bl ep umppr e s s u r e Q29.Du r i ngwel l k i l l i ngoper at i onDr i l l err educ est hepumps peedf r om 35SPM t o
30SPM mai nt ai ni ngdr i l l pi pepr es s ur ec ons t ant. Whatwi l l happent oBot t om Hol e Pr es s ur e? a.I nc r eas e b .De c r e as e c .St a yt h es a me Q30.Ca l c ul at er educ t i oni nbot t om hol epr es s ur eduet ogasc utmudwi t ht he
f ol l owi ngdat a,t heor i gi nal muddens i t ybei ng13. 0ppg:– De pt hI n t e r v a l
Av e r a geMu dWe i g ht
01000f t .
12. 3ppg
1. 1000-2000f t .
12. 7ppg
20 00-9 80 0f t
13 . 0pp g
ol l owi ngs t at ementdes cr i beoneoft hedi ffer enc esbet weendr i l l i ngwi t h Q31.Thef o i l b as ean dwa t e rb as emu d. “ Gasent er i ngt hewel l bor ewhi l edr i l l i ngwi t hoi l bas emudwi l l r educ e t heh ydr os t at i cpr es s ur emor et hani twoul dwhendr i l l i ngwi t hwat erbas emud” a.T r ue. b.Fal s e. nawel l of9450f t .dept h25bbl sofs l ugof12. 8ppgwaspumped,mudl e v el Q32.I i ndr i l l s t r i ngdr oppedby358f t .Whatwi l l bet hec hangei nBHPi fmudi nus ei s10. 2 ppg&dr i l l s t r i ngc apac i t yi s0. 0178bbl s l f t? a.0ps i b .1 42ps i c .1 13p s i c hoft hef ol l owi ngs i t uat i onmak ek i c kdet ec t i onmor edi ffic ul twi t hPVT Q33.Whi whi l edr i l l i ng? a.Bypas s i ngs ol i dc ont r ol equi pment b.Mi ni mum mudt r ans f ert oac t i v es y s t em c .Al l o wi ngmudl os sb yov er fl owi ngt heshak er s d. Changi ngt hehi gh/l o w al ar ms et t i ngoft hePVT Q34.Whi c hoft hef ol l owi ngwel l c ont r ol pr obl emsr equi r est hepumpt obes hut
downqui c k l yt opr ev entov erpr es s ur i z i ngopenhol ef or mat i on? a.Apl uggedbi tnoz z l e. b .Ap umpl i n erwa s ho ut . c .Awas houti nt hedr i l l pi pe.
d.Al os tbi tnoz z l es . e.Awas ho uti nt h ec hok ema ni f ol d. f .Ap l ug ge dc hok e . Q35.Whi c hoft hef ol l owi ngpar amet erwi l l effec tt her at eofi ni t i al pr es sur ebui l dup?
a.Gasmi gr at i on b.Onl ypor os i t y c .Per meabi l i t y d.Al l oft heabov e Q36.Afl owi ngwel l hasbeens huti n.Thedr i l l pi pepr es sur ei s‘ 0’ bec aus et her ei sa
nonr et ur nv al v ei nt hes t r i ng.T odet er mi net heSI DPP .Whatac t i ons houl dbet ak en? a.Br i ngt hepumpupt ok i l l r at ehol di ngt hec as i ngpr es s ur ec ons t antbyopeni ngt he c hok e .Th ep r es s ur es ho wnwh ent hepu mpi satk i l l r at ei sSI DPP . b.Pumpv er ys l owl yi nt ot hedr i l l pi pewi t ht hewel l s huti n.Whent hepumpi ng p r e s s u r e s t abi l i z est hefloathasopened.Thi spumppr es s ur ei sequal t oSI DPP . c .Shear i ngt hepi peandr eadi ngt heSI DPPdi r ec t l yf r om t hec as i nggauge Q37.Thedr i l l pi pesar ebei ngs t r i ppedi nt ot hewel l wi t hannul arpr ev ent erc l os ed
Dr i l l pi pec apac i t y0. 01776bbl s l f t Dr i l l pi pemet al di s pl ac ement0. 0087bbl s l f t Le ngt ho fones t and90f t i ) .Ho w muc hmudi st obebI eed—offaf t ers t r i ppi ngi npi pe? a.Equal t oc l os edendv ol umeoft hepi pes t r i ppedi n b.Equal t ot hes t eel di s pl ac ementoft hepi pes t r i ppedi n c .Equal t ot hec apac i t yoft hepi pes t r i ppedi n i i ) .Howmuc hmudi st obefi l l edi nt hepi peaf t ers t r i ppi ngones t andi nbbl Q38.Whi l ec i r c ul at i ngoutak i c kmudpumpf ai l ed.Whatfi r s tac t i oni st obet ak en?
a.Shuti nt hewel l
b.Chan gemudpump c.Repai rt hemudpump Q39.Ho wt hec hok ewas houtc anber ec ogni z edwhi l ewel l k i l l i ng?
a.Cont i nuous l yopeni ngc hok et omai nt ai nc or r ec tc i r c ul at i ngpr es sur es b.Rapi dr i s ei nc as i ngpr es sur enoc hangei ndr i l l pi pepr es sur e c .Cont i nuous l yc l os i ngc hok et omai nt ai nc or r ec tc i r c ul at i ngpr es sur es d.Rapi dr i s ei ndr i l l pi pepr es sur enoc hangei nc as i ngpr es sur e wert hef ol l owi ngi fWel l i ski l l edus i ngWei ght&wai tmet hod: Q40.Ans i ) .Wh ent h eFCPi st obema i nt a i n edc o ns t a nt? a .Wh enk i l l mu dr e ac h esc as i n gs h oe b.Af t erk i l l mudr eac hesbi t c .Wh enk i l l mudi sp umpe ddo wnt h es t r i n g d.Wheni nfl uxi soutofhol e i i ) .Whens ur f ac el i nev ol umei s5bbl s,whati st obedone? a.I gnor ei t b.Re—s ets t r ok ec ount eraf t erk i l l mudr eac hesdr i l l s t r i ng c .Subt r ac t150s t r ok esf r om s ur f ac et obi ts t r ok esandr ec al c ul at es t epdown Q41.What wi l l happent omudpi tv ol umewhent hegasi sc i r c ul at edupt hehol e?
a.i nc r eas es b .De c r e as e s c. Remai nss ame Q42.Du r i ngk i l l i ngoper at i ons uddenl os si ndr i l l pi pepr es sur ei sobs er v ed.What
ac t i ons houl dbet ak en? a.Cont i nuek i l l i ngats amer at e b.I nc r eas et hepumpr at e c .Cl os ec hok et oc ompens at ef orpr es sur el os si ndr i l l pi pe d.Shutt hewel l &i nv es t i gat et hepr obl em ofpr es sur el os s l epul l i ngoutt hewel l s t ar t sfl owi ng,whatfi r s tac t i oni st obet ak en? Q43.Whi
a.Runbac kt obo t t om b.I ns t al l FOSV,c l os ei t&s hutt hewel l c .Connec tk el l y&c i r c ul at e t ht hef ol l owi ngdat ac al c ul at et henumberofs t andst hatc anbepul l edout Q44.Wi dr ybef or et hewel l s t ar t st ofl ow. Sh oed ept h:5 , 0 00f t Wel l dept h:8, 500f t Mu dwe i g ht:1 3. 5pp g Por epr es sur egr adi ent0. 685ps i / f t Cas i ngc apac i t y:0. 147bbl / f t Openhol ecapac i t y0. 138bbl / f t D/ Pmet al di s pl ac ement:0. 0082bbl / f t Av er ages t andl engt h:88. 5f t Q45.Wh ati st h ed efi n i t i o no fMAASP?
a . Th ema x i mu m BHPc a nb ea l l o we dd ur i n gk i l l o pe r a t i o n b.Themax i mum dr i l l pi pepr es s ur et hatc anbeal l oweddur i ngk i l l oper at i on c .Thes ur f ac epr es sur ei nex c es sofmudhy dr os t at i ct hati fex c eededi sl i k el yt o c aus el o ss esa ts h oe d.Thet ot al pr es s ur eappl i edatc as i ngs hoet hatc anc aus el os s esats hoe Q46.Whi l ek i l l i ngawel l ,s uddeni nc r eas ei ndr i l l pi pepr es sur ewasnot i c edbutt he
c as i ngpr es s ur er ema i nu nc han ged.Whati st h epr oba bl eca us e ?( Sel ec tt wo answer s) a.Bl oc k agei ns t andpi pe/dr i l l pi pe b.Bi tnoz zl epl ugged
c .Ch ok epl u gg ed d.Pr e ss ur eb ui l du pi nMGS i c hoft h ef o l l o wi n gp r o bl e msn ee dsi mme di a t es t o pp ag eo fmu dp ump s? Q47.Wh a. Par t i al noz z l epl uggi ng b.Nozzl ewashout c .Chok ep l u ggi ng d.St r i ngwas ho ut Q48.De r r i c kmanobs er v edt hats hak er sar eo v er fl owi ngduet oi nc r eas edc ut t i ngs
c omi ngouti nmudr et ur ns .Whati st hes af es tac t i ont obet ak en? a.Sl o w do wnpumpsunt i l s hak er sc anhandl et heflo w &c ont i nuedr i l l i ng b.Fl owc hec ki fnegat i v e,c i r c ul at eatr educ edr at es ot hats hak er scanhandl et he fl ow c .Fl owc hec ki fnegat i v e,c ont i nuec i r c ul at i ngats amer at e d.Fl owc hec ki fnegat i v e,r et ur nator i gi nal dr i l l i ngpar amet er s 00f twel l ( TVD)i sk i l l edaf t erak i c k.Theaddi t i onal mudwei ghtr equi r ed Q49.A100 t opr ov i deat r i pmar gi nequal t oani nc r eas ei nBHPof250ps ii s a.0. 5ppg b.0. 2~0. 3ppg c .0. 3ppg Q50.At whatpoi ntc as i ngs hoepr es s ur ewi l l bemax i mum whi l ec i r c ul at i ngouta
gask i c k ? a.Wh enk i l l mu dr ea ch esbi t b .Wh enk i l l mu dr e ac h ess h oe c .Wh ent o po fg asr e ac h ess h o e. d.Ati ni t i al s huti n.
Q51.Ca l c ul at et hemudl ev el i nc r eas ei nt het r i pt ankaf t erpumpi ng25bbl sof16. 5
pp gs l ug Mudi nuse12. 2ppg Dr i l l st r i ngcapaci t y0. 0177bbl s/ f tAns:—————————-–bbl Wel l TVD10200f t ndr i l l i ngwi t has ur f ac eBOPi ns t al l ed,ho ws houl dt hes t ac kandc hok e Q52.Whe mani f ol dbes etupf oras of ts hut i n?(Sel ec tt hr eeans wer s) a.BOPs i deout l ethy dr aul i cc hok el i nev al v eopen. b.BOPs i deout l ethy dr aul i cc hok el i nev al v ec l os ed. c .Op enc i r c ui tf r om r emo t ec hok edo wnt ot h emudgass ep ar at o r . d.Remot echokeopen. e .Re mo t ec ho k ec l o s e d. f .On ev a l v ec l o s edbe t we enr e mo t ec ho k ea ndmu dg ass e pa r a t or . Q53.Ov erpul l whi l et r i ppi ngouti sas t uc kpi pewar ni ngs i gn.Whatwel l c ont r ol
pr obl em ma ybeas s oc i at edwi t ho v erpul l ? a .Th ep r e s en c eo fh y dr o c ar b on s . b .Swa bb i n g. cSur gi ng. dAfl o wi n gwe l l . Q54.What i st hefi r s tac t i ont ot ak ei f ,whi l ec i r c ul at i ngoutak i c k,t hec hi k sansor
hos egoi ngt ot he dr i l l s t r i ngpar t ed? a.Dr opt hedr i l l s t r i ngandc l os et hebl i nd/ s hearr ams . b .Cl o s et h es h ea rr a ms .( Sh ea rr a ma bo v et h ep i p er a mb ei n gu s ed ) . c .St opt hepump,c l os et hef ul l openi ngs af et yval v eont hedr i l l s t r i ngt henc l os et he choke.
Q55.Ca l c ul at et henews l owc i r c ul at i ngpr es s ur eat30s pm i fmudwei ghthasbeen
i nc r eas e df r om 1 0p pgt o12pp g:‘ Re c or d edd a t a : SCR@ 30s pm:40 0p s i Dr i l l eddept h–9587f t Mu dd en s i t y :1 0p pg a .3 33ps i b .5 76ps i c .4 80p s i d .5 25ps i
