This is a study and analysis of the case Hughes v. Lord Advocate [1963] 1 All E.R. 705Full description
Resumen de la Revolución Rusa por el historiador estado-unidense Stuart Hughes
Baker MKLFull description
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O analiza extrem de documentată și actuală a terorismului mondial și organizațiilor care complotează din umbră folosind asasinatul ca arma politică.De la Abraham Lincoln și J.F.Kennedy și pâ…Full description
Prior running the Casing Cutter< e reco!!end the CC= log to con3ir! the de$th o3 the collars. *e strongl advice not to cut near cou$ling. ood CB= =og ill also hel$ and save ti!e. Chec" see$ 3or the "nives (.5” >nives).
2! Aully close the kni#es and secure %ith duct tape around kni#es! 3! =o%er do%n the cutter (elo% rotary ta(le to do shallo% test!
%void reverse circulating hile R? ith B?%. #his can da!age the $iston/$ac"ing o3 the tool and ill result in $oor $er3or!ance.
! @H BH" to proposed 456 casing cutting depth $ @@@ !'! ake sure the casing tally has (een re#ie% and cut point is agreed (y client representati#e! ?! -ith no circulation+ esta(lish and record parameter $p+ do%n %eight+ A@T %ith operating 50 @P I 100 @P'! 9! /tart rotation slo%ly 50 I 100 @P+ and then (ring up pump slo%ly to gi#e pressure drop at cutter! Jradually increase &lo% rate to gi#e piston pressure o& 5 $si seen at cutter! onitor cutting torGue and pressure drop at sur&ace &or an indication! ;ote'
3 the CC= is not availa2le< $u!$ to o$en the "nives ith SP, esta2lished during sur3ace test and atte!$t to con3ir! the de$th o3 casing collar. 6o not rotate the $i$e. 6ou2le chec" de$th ith casing tallA !a"e sure e are not close to collar. Set the li!it to ea"est connection in the string.
2! @H %ith spear "ssem(ly+ take parameter $p -eight+ :o%n -eight' (e&ore engage the casing hanger! 3! Engage the casing+ pick up to pre;calculated 456 casing %eight o#er string %eight! & reGuired+ pressure can (e applied (elo% the 456 Casing Pack O&& to assist &reeing the casing! ;ote' Can over$ull u$ to 8 o3 the B?% ea"est $oint/connection to get the casing 3ree.
Baker Hughes Operational Procedure
Operational Running Procedure 5. Contin#enc$ Casin# %illin# o" 9-5/8” 4 !!" Casin# $eration The ET"= 7CHE@ Pilot ill should (e run %ith a shock su( and a su&&icient num(er o& :rill Collars to pro#ide a %ide range o& milling %eights!Both %eight on the mill and @Ps %ill (e determined (y penetration rate+ torGue+ and cuttings remo#al!Pilot milling %ith the ET"= 7CHE@ inserts should (e treated as a machining process rather than a milling process! Once the optimum %eight and @P is esta(lished it should (e maintained! The ET"= 7CHE@ cutting structure allo%sup to ten N10 times the @OP $@ate o& Penetration'! This %ill reGuire a mud system capa(le o& suspending the cuttings and carrying them to the sur&ace! /pecial consideration should also (e gi#en to additional sur&ace eGuipment to handle cuttings
B?% 6esign The milling )o( %ill (e started %ith a &ull gauge taper mill on the (ottom o& the BH"! The : o& the taper mill %ill (e the largest allo%a(le : &or the connection used! & milling %ill start shallo%+ drill collars %ill (e run (et%een the pilot mill and the taper mill! Aor the greatest sta(ility and e*tended mill li&e the taper mill should (e placed directly (elo% the pilot mill! This hookup %ill gi#e #ery little &le*i(ility! n high angle holes %ith poor casing centraliFation+ or any time high torGue (ecomes a pro(lem+ it may (e necessary to change to a smaller O: taper mill! & there is suspected %ashout (elo% the casing shoe and a drilling rig %ith a kelly is (eing used drill collars may (e run (elo% the pilot mill so the taper mill %ill stay inside the casing stu( at all times! :rill collar O: (elo% the mill should (e the largest &isha(le drill collars &or the casing siFe (eing milled! " near (it sta(iliFer %ith a right;hand spiral is run directly a(o#e the pilot mill! The sta(iliFer O: is the same as the pilot mill (lades! " shock su( and or nteG Thruster is run a(o#e the near (it sta(iliFer! The /hock /u( O: %ill (e the recommended siFe &or the outer casing! :rill collar %eight is critical &or mill li&e and cutting siFe! Aor milling 13;345 and ;45 casing+ a shock su( %ith t%o N2 stands o& 5 drill collars on top! This %eight is not reGuired &or %eight on mill (ut &or inertia to keep the mill turning smooth! & larger drill collars are not a#aila(le a minimum o& three N3 stands o& collars should (e used!
,illing luid " i*ed etal Hydro*ide mud system has pro#en to (e the (est milling &luid a#aila(le at present! n the past H has sho%n an a(ility to carry a sustained 2+00M o& metal per hour+ %ithout pro(lems during connections! :epending on cost and amount o& casing to (e milled the customer may choose a di&&erent mud system+ i& this is the case @!O!P! %ill ha#e to (e ad)usted to suit! " mud system %ith a yield point o& 0 ; ?0 %ith a #iscosity o& 50 ; 100 is recommended!
Operational Running Procedure Sur3ace D+ui$!ent History has sho%n that no con#entional drilling mud cleaning system is up to the task o& casing milling cutting remo#al at the ma*imum @!O!P!s! /e#eral designs ha#e (een used success&ully! n all cases there is a straight+ uno(structed and open line &rom the (ell nipple to the primary cleaning system! One type o& primary cleaning system is porta(le shakers and pits %ith the partially cleaned mud (eing pumped to the rigs main shakers &or a &inal cleaning! The (est system to date is similar to an old style gum(o (o*! The gum(o (o* utiliFes a dou(le trough coming &rom the (ell nipple! The top trough is slotted so that the mud %ill drain through and the main portion o& the cuttings %ill roll into containers! The mud %ill then &lo% to the rigs drilling shakers &or &inal cleaning! @emem(er+ (oth the mud and the sur&ace eGuipment must (e a(le to handle a sustained 2+00M o& metal cutting per hour! illing parameters %ill change %ith each )o(! "s a starting point+ rotary speed should (e 10Q @P+ pump rate 00Q JP and ?+000M -!O!! Shale shakers should be ftted with ALAP mesh screens to minimize recirculation o metal cuttings. The shakers should also be closely monitored when sweeps are being pumped, obsering or e!cess cuttings. "!cess cutting will indicate poor hole cleaning. #ncrease the yield point and rotary speed by si! rpm accordingly.
Place ditch magnets in the (ottom o& the shakers and in line o& &lo%! onitor+ clean and %eigh the metal sha#ings! Plot the metal cut #ersus the metal %eighed at the sur&ace! /igni&icant di&&erence in %eights indicate hole cleaning pro(lem!
Operational Running Procedure Casing ,illing ;otes' 3 the ell has not 2een dis$laced to !illing 3luid< it should dis$laced $rior to 2eginning cutting o$erations. Should there 2e a re+uire!ent to co!$ro!ise ith the !illing 3luid< the viscosit is the !ost i!$ortant as$ect o3 the 3luid. Should the ield $oint 2e reduced it is reco!!ended to circulate 2otto!s u$ $rior to shutting don $u!$s. t is Ba"er reco!!endation to rig u$ the $u!$ing e+ui$!ent< such that in the event a connection is to 2e !ade. #he $u!$ !a 2e diverted to the "ill or cho"e line to allo continuous circulation in the large 2ore riser and "ee$ the !illing 3luid !oving reducing the e33ects o3 cuttings 3all out and 2rea"ing circulation. Cuttings handling at sur3ace should 2e care3ull designed to $revent 2loc"ages o3 sur3ace lines< leading to ;P#. Consultation ith the Ba"er ishing #ools re$resentative at an earl stage could hel$ alleviate these $ro2le!s.
@H to 10 &t a(o#e the casing stu( $taper mill depth' and esta(lish parameters %ith and %ithout pumps!
;otes' #his B?% is designed to !a7i!i0e RP hile $rotecting the E /8” casing. Sta2ili0ers are incor$orated a2ove the ,ill in order to distri2ute the a$$lied side
Operational Running Procedure load on the casing and at the !ill. B?% analsis and case histories shos this to 2e the case. Sta2ili0ers are o3 an o$en $ro3ile in order to allo clear $assage o3 the !illed cuttings. ;otes' #he B?% eight is su2stantiall greater than the e7$ected !illing eight. #his is to $rovide a large rotating !ass hich hel$s reduce torsional shoc".Belo the !ill a relativel short asse!2l is used. #his li!its the rotating !ass 2elo (hich e7$eriences le3t hand tor+ue) and $revents an li"elihood o3 a 2ac"o33 2elo the !ill. Sta2ili0er si0ing is discussed later.
3! Continue to @H and tag the casing stu(!
?! t is e*tremely important that progress is maintained at all times+ since rotation in one spot can Guickly cause e*ternal casing string damage! 9! Continue milling+ making alteration in the BH" as necessary! 5! Clean out trips should also (e made at appropriate times throughout the operation in order to clean out any cement sheath+ %hich may remain! ! Once milling depth has (een reached+ circulate %ell clean! 10! POOH %ith illing "ssem(ly! 11! /hould the pilot milling not (e complete %ith the a(o#e assem(ly+ repeat the a(o#e procedure %ith a ne% pilot mill!
