L&U DOK. SENTER O STATOIL. L. NR. 3rt^8<444QO2.A KODE. 11 October 1984 TECHNICAL MANAGER. Denne rapport tilhører NORSKE SHELL E J TANANGER

Transcription

1 A/S NORSKE SHELL E J TANANGER Denne rapport thører O STATOL L&U DOK. SENTER L. NR. 3rt^8<444QO2.A KODE Returneres etter bruk COMPLETON & PRODUCTON TEST PROGRAMME NUMBER WELL 3/2-5 RG "BORGNY DOLPHN" October 984 OPERATONS ENG/ CHEF PETR. ENG. TECHNCAL MANAGER

2 A/S NORSKE SHELL E & P TANANGER COMPLETON & PRODUCTON TEST PROGRAMME NUMBER f WELL 3/2-5 RG "BORGNY DOLPHN" L October OPERATONS ENG/ CHEF PETR. ENG. TECHNCAL MANAGER

3 L CONTENTS!. PRODUCTON TEST DESCRPTON PAGE NO.. Test Objectves 3.2 Programme Outnes 3.3 Sequence of Operatons 3.4 Genera 4 2. WELL DATA 2. Reservor Data Competon Fud Perforaton nterva Depth Reference Gun Type Gauge Type 5 3. DETALED OPERATON 3. Preparaton/ Settng Packer Runnng Test Strng wth tubng conveyed gun Drawdown/ Perforatng Fow Test Programme 3.5 Addtona Perforatng/ Fowtestng Retrevng Test Strng 3 APPENDCES. Preparaton of Tubng 4 2. Pressure Testng Surface Lnes and Equpment 5 3. Safety Procedure for Handng Mercury 6 4. Safety Procedure for Handng Exposves 7 5. Fowng the We 8 6. Handng of Competon Brne 9 7. Contngency Measures 2 8. We Status 3/ Measurements Requred Procedure for Recombnaton Sampes 25. Sand Detecton Speca DST Toos n Test Strng Testng Organsaton 28 FGURES. EZ-tree space out 2. Perforatng/ Test Strng 3. Gun/ Sea Assemby space out 4. Surface Equpment Layout 5. Formaton Log test 3/2-5

4 P P. PRODUCTON TEST DESCRPTON. Test Objectve Two tests are panned n ths we and the objectves are as foows: a) - n the frst test to defne we productvty n the mcaceous o bearng sand. b) - n the second test to determne the nature of the fuds n the zone of uncertanty ( m) wth respect to the GOC. Detaed programme for the second test s not ncuded n ths programme and w foow ater..2 Programme Outne Test The o bearng reservor secton w be tested n the nterva m BDF (8m) n consodated, mcaceous sands. The we w be dspaced to cean brne and a permanent packer set. A 3" competon strng w be run wth tubng conveyed guns on bottom, the guns spaced out on depth, a fowhead nstaed and the we perforated under drawdown. Foowng a cean up perod, gauges w be run and the we fow tested and shut n for pressure bud up. Subsequenty addtona nterva ( m) may be perforated wth through tubng guns (-/6") and addtona fow testng carred out before retrevng the strng..3 Sequence of Operatons.3. RH to bottom wth bt, 9-5/8" scraper, stabs, DC's and HWDP on 5" dr ppe..3.2 Dspace we bore to seawater..3.3 Cean casng wth vscous ps and acd treatment..3.4 Dspace we to.20 SG CaCU brne and fter brne n hoe to an acceptabe sods eve..3.5 POH wth 5" DP and rack same..3.6 Log CBL/VDL and Set Mode "F-" producton packer..3.7 Make "dummy run" wth 4J" test rser..3.8 Run 3" test strng wth tubng conveyed guns on bottom..3.9 Test strng to 4000 ps and and strng..3.0 Dspace tubng wth dese to gve maxmum drawdown (approx. 400 ps)..3. Perforate underbaanced the nterva m BDF by runnng the detonatng bar on wrene..3.2 Fow we to cean up..3.3 Cose n we and RH and reease the guns..3.4 Run pressure gauges. test 3/2-5

5 D n.3.5 Carry out man fow test..3.6 Cose n we for bud-up and retreve the gauges..3.7 Run -/6" perforatng guns through test strng and perforate nterva m (optona)..3.8 Open up we and fow test. Dependant on performance gauges w be run or fow testng concuded (optona)..3.9 K we and retreve test strng..4 Genera The we has been dred to a Tota Depth of 677 m BDF. The 9-5/8" casng has been set wth shoe at 663 m and foat coar at 638 m. The casng has been pressure tested to 4000 ps. Pror to startng the competon/ test programme, the BOP stack w be pressure tested.!! test 3/2-5

6 É 2. WELL DATA 2. Reservor Data Top reservor 482 m BDF Gas O contact (uncertan) m O Water Contact 583 m Reservor pressure 2302 psa at 572 m BDF Estmated maxmum CTHP wth o +/- 800 ps O gradent(reservor condtons) 0.34 ps/ft Water gradent 0.44 ps/ft Water santy ppm Reservor Temperature 56 deg F 2.2 Competon fud The competon fud to be used w be cean Cacum Chorde (CaC 2 ) brne. Densty:.20 SG (0.520 ps/ft) - gvng +/- 290 ps overbaance on the o zone when the rser s removed. The reservor was dred wth.23 SG Cacum Chorde/ chak mud and the 9-5/8" casng was set n same mud. 2.3 Perforaton nterva The foowng perforaton nterva has been seected for the man test: m BDF (8 m). Possbe addtona nterva to be perforated after the man test s: m BDF (3 m). 2.4 Depth References A depths quoted n ths programme for packer settng and perforatng refer to the LDT/CNL/NGT og no. 4 of made from Borgny Dophn (see fg. 5). Dr foor - Mean Sea Leve 25 m Dr foor - Seabed 368 m 2.5 Perforatng Gun type Tubng conveyed perforatng guns w be run on bottom of the perforatng strng. Gun specfcaton: 5" Deep Penetrator, 2 shot per foot, 60 deg Scaoped, 9.5 grams RDX charges. For addtona through tubng perforaton the Schumberger -/6" Enerjet wth 4 spf w be used. 2.6 Gauge Type x Amerada RPG, 0,000 ps eement, 44 hrs cock 2 x SSDP, deay and sampng rate to be advsed. test 3/2-5

7 t ^^ 3. DETALED OPERATON Genera A. Ceanness The success of the test s dependent on the ceanness of a the fuds pumped n the hoe, and the ceanness of a the equpment run n the hoe. Great care shoud be taken to acheve an acceptabe eve of ceanness. Two specfc tems of concern are as foows: ) Ensure ALL reevant crcuatng nes are ceaned of mud, usng seawater. Ths ncudes choke and k nes, and a nes whch may be used n the brne crcuaton system. Ths shoud be carred out whst crcuatng the we cean and before runnng the competon testng strng. ) DO NOT USE EXCESSVE D.P. DOPE. - Dope pns ony usng a sma pant brush and wpe off excess dope squeezed out of the connecton. B. Safety ) A operatons nvovng trppng wth sma bore ppe (3", 2-7/8", etc) shoud be treated wth a maxmum of care. Hoe fup voumes are to be cacuated and checked and the taes recorded n a neat format. ) 3. Preparaton f evdence of swabbng s noted durng trppng, nsta an nsde BOP on the DP mmedatey to mantan contro over the DP shoud t come ve. Whst the annuus remans stabe, run n hoe as deep as possbe before shuttng n the we and crcuatng out the nfux. f the annuus starts to fow, nsta key, cose n we, and crcuate/ contro we at that depth. RH wth 8" bt (no nozzes), 9-5/8" casng scrapers, stabzers, 9 x 6" DC's, and 4 stands 5" HWDP on 5" pastc coated DP and tag the 9-5/8" foat coar. 3.. Crcuate the hoe to seawater and contnue to crcuate one hoe voume before pumpng the foowng fuds to cean the casng: test 3/ bb p of seawater geed wth 2 b/bb J-64 (HEC) and ga/bb F40 (surfactant). Crcuate the p around wth seawater ntroducng a second vscous p after approxmatey hoe voume. Crcuate out and dscard the geed ps ga 5 % HCL contanng 20 gas A200 nhbtor. (nhbtor aready ncuded n the acd as devered to the rg). Crcuate round the acd wth seawater at maxmum rate - and dscard spent acd returns. 50 bbs Caustc p (Ph = 3) dspaced wth seawater.

8 '/» P j P Contnue crcuatng wth seawater usng rg pumps unt the sods eve n returned seawater has reached an acceptabe eve as measured by the Couter counter. Sampes for Couter counter to be taken at the gumbo box and the seawater returns dumped n the sea. Pumpng rate shoud be as hgh as practcay possbe When the sods eve n the seawater s acceptabe, dspace the seawater wth.20 SG (0.520 ps/ft) CaCU cean brne usng the Dowe pump (use a 20 bbs geed seawater spacer). Havng dspaced the hoe to brne, crcuate the brne n the hoe va the fters unt a the cean brne at surface has been pumped downhoe. Contnuousy montor the sods eve of the returns wth the Couter counter. f sods eve s unacceptabe at ths stage, contnue crcuatng and fterng unt an acceptabe eve has been acheved (to be confrmed by base) POH wth the 5" DP rackng same n the derrck Rg up Schumberger and run CBL/VDL/CCL/GR og from the foat coar to 00 m above top cement. NOTE : Record and report the exact depth of the top of the foat coar for ater correaton Rg up Schumberger and run gauge rng/ junk baset (00 = 8.300") down to the foat coar RH on Schumberger ne and set at +/- 528 m BDF, the Baker Mode "F-", sze retaner producton packer wth 6" bore and max OD = 8.28". POH and rg down Schumberger. NOTE : a) Settng depth w be top of packer bore (See fg. 3). b) Settng depth s seected such that the perforatng guns w be on depth when the G-22 sea assemby s spaced out,.e. the ocator 2.5 m above top ocator bore. c) The sub assemby w be re-measured on the ste and the packer settng depth adjusted accordngy f requred Make up futed hanger, sck jont and SSTT. At ths stage connect hydrauc hoses and test unatchng/ atchng feature. Bank off njecton and contro ne ports and run 4", 9.2 bs/ft, C-75, PH-6 tubng rser ncudng ubrcator vave (+/- 30 m BDF) wth banked off contro ne ports. Run n and and futed hanger on wearbushng. Space out so that top of tubng rser s +/- 5 meters above rg foor. Cose/ open 5" ppe rams. Pu out and stand 4" rser back n derrck, ncudng SSTT. Check for ram-mpressons on sck jont Make up the fowhead on one snge of 4" PH-6 tubng jont and ay down same on pperack. test 3/2-5

9 j 3.2 Runnng Test Strng wth Tubng Conveyed Gun 3.2. Make up the guns and assocated subassembes as per fg. 2 ncudng the frst 3" VAM snge. NOTE : a) Refer to Appendx 4 for safety precautons handng the tubng conveyed guns. whst b) The Sdng Sde Door (SSD) w be run n cosed poston. c) The PCT vave w be run n ocked open poston. See Appendx 2. d) The ported-pressure equazng sub and perforated ppe w aow the strng to f wth brne whe runnng the strng n the hoe. e) The ength from the top shot on the gun to the 6-22 ocator on the Baker sea assemby, shoud be spaced out such that as when the strng s anded wth the G-22 ocator 2.5 m above the top of the packer bore, the guns are n correct perforatng poston, (see fg. 3). f) Pup jonts (2-3/8") of tota 60 feet ength w be used n between the top of the gun and the mechanca gun reease, so that the mue shoe w be approx. 8 m above the second test nterva ( m). Thus as an opton, ths nterva can be perforated wth -/6" guns f requred wthout pung the test strng Rg up test sub wth Fopetro 0,000 ps wrene BOP and stuffng box on top on the tubng strng. RH wth wrene and set the RN test too n the 2-7/8" RN - nppe. Wth wrene atched onto the pug, pressure test the tubng to 4,000 ps surface pressure for 30 mnutes. After successfu pressure test, retreve the test too and rg down the wrene equpment and test sub. NOTE : a) Whe pressure testng, ncrease pressure n stages of,000 ps hodng each step for mnutes whe observng pressure.test pressure of 4,000 ps shoud be hed for 30 mnutes. f drop occurs et t stabze for 0 mnutes. Then ncrease to 4,000 ps agan whch shoud then be hed for fu 30 mnutes. Keep annu us open, and montor voumes pumped and returned. b) Make sure cabe s centrazed n BOP whe cosng the BOP to avod cuttng the wre RH the guns and sub assemby on 3" C-75, 0.2 bs/ft VAM tubng n the nterva between the top of the subassembtes and the wehead nsta at east two whte panted jonts n the BOP area and RH the strng on 5" dr ppe as rser unt the perforatng gun s just above the F- packer. test 3/2-5 " 8

10 P P P NOTE : The panted jonts shoud be nstaed such that they are n the BOP area when the sea assemby ocator ands on the packer nsta the crcuatng sub and crcuate wth brne (mnmum tubng voume) to cean any possbe f on top of the dsc n the ported sub Whe crcuatng very sowy stab nto the F- packer wth the G-22 sea assemby. Stop pumpng and ower tubng unt ocator assemby stops on top of the packer (set down 0,000 bs for postve ndcaton). Pck strng up 2.5 m and cose the rams around the whte panted snge. (Pckng up the strng and cosng the rams, shoud ony be carred out f there s no heave. f excessve heave, use drstrng compensator and cose rams wth the strng genty anded on the packer. NOTE : a) Record up weght and down weght of the strng before enterng the packer bore. b) Check enterng packer by notng pressure ncrease when frst seas enter packer bore. Stop pumps, and open tubng. c) Check that tubng has moved down the fu ength of the sea assemby (20'). d) Cacuate space out requrements so that when the futed hanger s anded n the wearbushng, the G-22 ocator w be 2.5 m above the packer, and the guns w be on depth Pu back to the whte panted snges and space out wth 3" C-75, VAM pup jonts beow the futed hanger nsta futed hanger and 5" sck jont, and RH the tubng strng on the pre made-up 4" PH-6 tubng rser ncudng SSTT and ubrcator vave wth one jont of tubng on top and hang off strng n rotary tabe. NOTE : Space out so that when fowhead s nstaed t w be +/- 5 m above rg foor Pressure test the test strng to 4,000 ps as n step above. Pressure test the ubrcator vave from above to 4,000 ps. NOTE : Ensure that the sea assemby s not stabbed nto the packer bore RH the strng and stab the sea assemby nto packer bore. Hang off the strng n the rotary tabe Pck up fowhead aready made up on the 4" PH-6 jont, nsta 50' x 2" wre sngs between bas and fowhead eevator nsta chcksan nes to fow and k sdes on fowhead. Connect assemby to upfacng tubng connecton n rotary tabe. Land futed hanger nto wearbushng. Connect the k ne to the Dowe unt and fow ne to the sandfter. test 3/2-5 9

11 3.2.3 Pressure test the fowhead aganst the ubrcator vave to. 4,000 ps for 30 mn Cose mdde 5" ppe ram and pressure test annuus to 500 ps/ 5 mnutes down k ne to check packer/ sea assemby. Keep rams cosed. NOTE : The PCT vave w actuate at 2500 ps annuus pressure Pressure test a surface nes to 4,000 ps for 30 mnutes. 3.3 Drawdown/ Perforatng 3.3. Pressure up annuus to maxmum 2500 ps to actuate the PCT vave and beed off pressure to zero, eavng the PCT cosed. NOTE : The PCT-vave s pre-set n open poston before runnng n hoe by a pressurzed chamber keepng the vave n open poston. To actuate the vave, annuus apped pressure w rupture a dsc thereby reevng the pressure n the too whch aows a mandre to move and the ba vave w cose Open up the Mutpe Openng Reversng Vave (MORV) by pressurng up the strng aganst the PCT vave (approx ps requred). NOTE : The MORV has a 9 cyce combnaton of ndex seeves, and the vave has to be pressure cyced nne tmes before t opens. (Ths ncudes cyces made for pressure testng) Dspace the tubng to dese takng returns up k ne, to wthn 2-3 bbs of the MORV, then cose the MORV. NOTE : a) Dspacement rate can be 3 BPM maxmum. To cose the MORV ncrease pump rate to 4.5 BPM and note pressure ncrease ndcatng that the vave has cosed. b) Record and report max drawdown obtaned. Reservor pressure at 572 m from RFT s 2302 psa, and dese densty assumed at 0.85 SG Open up the PCT vave and keep t open for the duraton of the test (approx. 200 ps s requred to keep the vave open) Rg up Fopetro ubrcator on top of the fowhead wth the swab vave cosed, nsta the detonatng bar connected to the sck wrene, n the ubrcator. Pressure test ubrcator to 4,000 ps/ 5 mn. NOTE : The wrene assemby w consst of from bottom: detonatng bar (fat bottom) (.25" OD) runnng too (.50" OD) wrene jar (.50" OD) 3 feet stem (.50" OD) test 3/2-5 0

12 ; The ength of ths assemby s desgned such that the top of the assemby s beow the ported sub when frng the gun Open the swab vave and RH wth detonatng bar on wrene and fre the gun. NOTE : 3.4 Fow Test Programme Genera Whe frng the gun, make sure that the fow ne s open to the gauge tank bypassng the separator. Ths outne fow test programme s a gude ony. Specfc tems e.g. rates and duratons, engths of bud ups etc. may be vared n the ght of onste nformaton ganed durng the test. The foowng pont shoud however, be noted: ) Fow through the 6"/5000 ps fowne. ) nject gyco va the chemca njecton ne to the EZ tree and at separator and choke manfod. ) Once t has been ascertaned that there s no sand producton bypass the sand fter at hgh fow rates. Be prepared to swtch fow through the sand fter f sand producton occurs. v) nsta erroson probes n fow ne between fowhead and sand fter. v) Mantan a pressure of at east +/- 500 ps greater than FTHP on the ba vave of the EZ tree. v) n a wrene work where the swab vave or ubrcator vave s cosed, the ubrcator s to be fed wth a 50/50 water/gyco for the o test. Pror to openng, the ubrcator s to be re-pressurzed to equaze across the vave used After frng the gun, mmedatey back surge the we and et the we fow nto the gauge tank. NOTE : f the we des after fowng for a whe, the we w be brought ve agan by; cosng the PCT vave, openng the mutpe openng reversng vave, reversng out the tubng contents, dspacng the tubng to dese, cosng the reversng vave, openng up the PCT vave and re-openng the we Contnue fow the we for approxmatey 6 hrs to cean up. Keep fow rate beow 000 BPD n the begnnng whe montorng for sand producton. At ow rate or f the we des, pu the wrene assemby back nto the ubrcator and cose the swab vave. After havng pued the WL. assemby and no sand producton s apparent, open up we to maxmum rate possbe. Agan check for sand producton. NOTE : Dependng on we performance acd stmuatons may be necessary at ths stage. test 3/2-5

13 t When we s cean, cose n the we. NOTE : Before cosng the we consut wth base RH wth Baker wrene too and reease the gun assemby nsta pressure gauges as descrbed n step 2.6, n Fppetro ubrcator and pressure test same. When CTHP has stabsed run gauges to the Baker "F"-nppe. Make gradent stops n the ubrcator and at 50 m, 00 m and 50 m above the 'F'-nppe whe RH Open up the we and fow on maxmum rate for 24 hrs. NOTE : Take PVT recombnaton sampes at the separator as requred (ref. Appendx 9) Cose n we and carry out a 6 hrs pressure bud-up survey RH and retreve the pressure gauges makng gradent stops as above. NOTE : Before precedng wth programme, the guages w be nspected to ensure that they have worked and the resuts are acceptabe. nform base of resuts whch agan w confrm further programme RH wth three bottom hoe sampers and one SDP gauge. Take three sampes wth bottom of BHS assemby +/- 0 m above the bottom of the producton sub assemby whe fowng at +/- 500 BPD. Shut n we at surface and pu sampers. NOTE : Two good BHS are requred RH wth sand baer and record and report Hod Up Depth (HUD). Recover a sampe f any. 3.5 Addtona Perforatng/ Fowng NOTE : f addtona perforatng s requred the foowng programme w be carred out RH wth wrene gauge cutter and check that there s no obstructons n the 'F' nppe/ tae ppe Rg up Schumberger pressure contro equpment on top of the fowhead. RH wth 3 m of -/6" Enerjet wth 4 spf and perforate under pressure contro the nterva m BDF. POH wth gun assemby Open up the we and produce cean. Dependant on the we performance further programme w be advsed,.e. run gauges and fow or addtona perforatng, acd stmuaton or concudng testng. k test 3/2-5 2

14 ( «3.6 Retrevng Test Strng 3.6. Buhead tubng contents down to test nterva wth a vscous chak/ brne p foowed by brne of.20 SG (0.520 ps/ft). Observe tubng dead Cose the PCT vave and open the Mutpe Openng Reversng Vave. Reverse crcuate the we dead wth.20 SG brne. When we s dead, straght crcuate one hoe voume through the vave. Cose the MORV Pck up "sea assemby" out of the packer and crcuate normay and condton we wth.20 SG brne. NOTE : Spot vscous brne/ chak ps f the we s takng fud Lay down fowhead and POH producton strng rackng the 3" tubng n the derrck. Further programme w be advsed. ( test 3/2-5 3

15 J APPENDX B É f k PREPARATON OF TUBNG. Offoad and rack tubng, separatng each ayer wth at east three eveny spaced wooden strps. 2. Number and measure each jont. WSPE and Producton Test Supervsor both to check tubng taes. 3. Remove pn and box protectors, nspect threads for damage, cean wth sovent, and f possbe, wth steam. 4. Brush each jont to remove scae and oose sods: f any jont has excessve scae t shoud be rejected. 5. Drft each jont wth approprate 42" ong tubng drft. A drfts shoud be ftted wth a fshng neck. 6. Recean pns and boxes and repace protectors. (N.B. Protectors shoud aso be cean and ony ghty doped). 7. Check that there are a reasonabe number of pup jonts for spacng. 8. nform shore of any further tubng requrements. 9. Return any unsatsfactory jonts. PREPARATON OF TUBNG SUB-ASSEMBLES EQUPMENT. Physcay check a tubng sub-assembes and nspect and cean threads wth sovent. 2. Ensure that spares of each tem are avaabe on the rg. 3. Functon test a equpment (sdng seeves, nppes, etc.) 4. Run wrene drft through each sub-assemby payng partcuar attenton to poshed sectons as these can easy be squeezed n make up. N.B. Separate drft runs shoud be made down to and through No-Go nppes. 5. Carry out AP pressure test on each sub-assemby to 4,000 ps (to be wtnessed by WSPE, TP and Producton Test Supervsor). NOTE: tems 2 through 6 ony when not carred out on-shore and wtnessed by PTS. 6. Accuratey measure each tubng sub-assemby and note the poston of a accessores. 7. Repace protectors on each end of the tubng sub-assembes. 8. Examne sub-assembes for tong damage. f excessve, a new sub-assemby shoud be made up. 9. TP and WSPE to carry out fna dmensons check. test 3/2-5 4

16 f P j PRESSURE TESTNG SURFACE LNES AND EQUPMENT APPENDX 2 Before the we s fow tested (preferaby pror to nstaaton of the strng) the foowng equpment w have been functon/pressure tested on the deck as foows: Fowhead A net/outet connectons are to be banked off wth testsubs. Pressure test body wth a vaves open. A vaves pressure tested from beow. Producton Test Equpment The foowng tests shoud be carred out before the nstaaton of the test strng n order to save rg tme. Connect the cement dscharge ne to the 2" test ne and pressure test as foows: Lnes to burners Lnes to o and gas manfod Separator Reef vave(s) on separator 000 ps/5 mn 000 ps/5 mn 350 ps/5 mn +/- 450 ps (ony f not recenty done onshore and wtnessed by She representatve). Fush the vaves cean by pumpng +/- bb of water and cose the vave by beedng the pressure to zero. Lnes to upstream net of separator and By-pass vave :,350 ps/5 mn Check "P" pot trps at +/- 350 ps Lnes downstream of steam heat exchanger: 4,000 ps/5 mn Lnes upstream of steam heat exchanger : 4,000 ps/5 mn Wth 4,000 ps through the choke manfod cose a vaves on same and beed off the pressure between the upstream and downstream vaves. Observe for eakages. Cabrate the o and water meters whe hooked-up to the pump ne. TESTS TO BE CARRED OUT AFTER THE NSTALLATON OF THE PRODUCTON EQUPMENT Wth the fowhead mastergate cosed and the k ne/fowne chcksan oops nstaed pressure test aganst the cosed choke manfod to 4,000 ps/ 5 mns. Checks shoud be carred out to ensure the foowng auxares are operatona:. Steam suppy to the steam heat exchanger, the condensate feed back ne to the rg system, and the steam degasser system. 2. Rg ar suppy to the burners. 3. Water sprays to burnerheads. Coong water to the rg's hu/cranes etc ready avaabe and at suffcent pressure. NOTE: After pressure testng the burner boom o and gas nes a vaves downstream of the T-manfod must be kept open to aow for quck change-over of burners. test 3/2-5

17 !! SAFETY PROCEDURE FOR HANDLNG MERCURY APPENDX 3 Mercury s used offshore for re-combnaton surface sampng and transfer of bottom hoe sampes n order not to modfy the composton of the sampe. Mercury Handng Equpment to be used. The test operators who are to perform the operatons utzng mercury must report wth a necessary protectve equpment. Protectve equpment s defned as foows: a) Coveras wthout pockets. b) Snugy fttng spash gogges. c) Sutabe breathng mask. Any other person(s) n the area who may come n contact wth mercury or mercury vapor w be requred to utze smar protectve equpment. d) Mercury exposure contro form. e) Drager tube coormetrc kt for checkng the presence of mercury vapor. f) SRM Mercury sp contro center. 2. The persona protectve equpment sha be eft separate from other tems of equpment or cothng and on competon of work w be paced n seaed pastc bags whch are to be abeed "Mercury Contamnated" and returned to Fopetro for handng n accordance wth statutory requrements and safety standards. 3. Used breathng masks w be handed n the same manner as equpment n tem The test operators sha refran from smokng, drnkng or eatng durng rest break whe engaged n testng or sampng operatons. n the event that any of the prementoned are requred, then a shower and change of cothng s essenta. 5. Entrance to the work area w be roped off and approprate sgns dspayed. No person sha enter the area wthout the approved equpment. The area sha reman roped off unt a Dragertube coormetrc envronmenta test s taken, wthn one () foot of the mercury source to ndcate that no mercury vapor s present. 6. Shoud mercury come n drect contact wth the skn of any person, t must be reported mmedatey to the operator's supervsor, who w nform the medc, the cent representatve, the safety offcer and the company Drng Supervsor. NOTE : Further procedures for operatng of sampng equpment w be sent to the rg separatey from the test programme. test 3/2-5 6

18 B SAFETY PROCEDURE FOR HANDLNG EXPLOSVES Safety durng oadng and frng APPENDX 4 Before gun/settng too s armed a transmtters, cranes, wedng machnes, radar etc. must be swtched off and reman swtched off unt the gun/packer s fred/set. After frng/settng, transmsson can be resumed unt the gun/packer settng too has been pued to about 00 m beow the seabed, but must then cease unt the gun/packer settng too has been ad down and checked. Portabe transmtters shoud be paced n one room to prevent accdenta transmsson. Hecopters shoud not be permtted to and on the patform durng perforatons, or to approach coser than 50 m. Suppy and standby boats to be advsed that ths operaton s to take pace, and to shut down ther transmtters and stand off from the rg at ths tme. Work nvovng exposves Work nvovng the use of exposves shoud be carred out ony by specast personne and shoud never be done durng an eectrca storm. Durng any job nvovng the use of exposves, the number of personne empoyed shoud be kept to a mnmum. A other persons shoud be excuded from the danger area (e.g. wakway and derrck foor) throughout the operaton. Warnng sgns shoud be paced on access routes to the danger area to prevent access by unauthorsed persons. The Patform Manager (Captan) s to nspect procedures. equpment and check safety Two hours before each perforatng/packer settng run the Petroeum Engneer w teex Base wth an estmate of when the rado beacon, VHF transmtter, etc. w be cosed down and for how ong. Actua tmes w be advsed by the Rado Operator. Ths s partcuary mportant f a hecopter fght s schedued for the rg concerned. The frst perforaton must be carred out n dayght but ater runs and packer settngs may be carred out at nght.however, f n the course of the producton test a we s ked due to unforeseen crcumstances, the frst of any subsequent perforatons must aso be carred out n dayght. A constant check must be made to ensure that no votage s measured between the rser and the rg at surface. n the event that votage s measured,! a sources of eectrca energy must be swtched off. (N.B. Ths may U precude perforatng/packer settng at nght). b test 3/2-5 7

19 APPENDX 5 B P FLOWNG THE WELL nta openng up a we to beed off, perforatng wth mmedatey backsurge, or nta start up of a separator, must be carred out n dayght; producton testng may then contnue nto the nght. Farng operatons may be carred out under the foowng condtons: HYDRATE a) Weather sutabe for rescue operatons. b) Wnd force suffcent to carry gases away from the patform. c) Shppng and arcraft warned to stand cear durng bowng off. d) Standby boat and suppy boat(s) advsed that ths operaton s to take pace and to take the acton and precautons necessary for ths operatons. PREVENTON To prevent hydrate formaton durng the fow testng, pump factes shoud be hooked up to the foowng njecton ponts: a) / Tree b) Fowhead c) Data Header d) Gasne downstream of the separator c) and d) may be fed by one pump wth a T-manfod to aow for changeover. n order to safeguard aganst hydrate formaton durng shut-n perods t s recommended to contnuousy nject gyco n the vertca run of the fowhead as we as at the EZ tree. NOTE: Trethyene Gyco to be used for hydrate preventon. Methano to be used when hydrates have been formed. test 3/2-5 8

20 p HANDLNG AND MXNG OF CALCUM CHLORDE A) Handng of CaC2 brne. BRNE APPENDX 6 CaC 2, both as brne and powder can cause unpeasant skn rrtaton and even bsterng f aowed to reman n contact wth the skn. t s therefore mportant that personne nvoved n work where they may be exposed to the brne or powder shoud be protected as foows: a) Rubber goves (gauntet type to cover wrsts). b) Waterproof scker suts wth hoods. c) Rubber boots (eather boots are shrveed by the brne). d) Fu face masks for use when mxng powdered CaC 2. e) Barrer cream (e.g. "Vasene") for use on exposed skn, partcuary face, neck and wrsts, to prevent drect skn contact wth the brne. Addtonay, whenever brne/powder s nadvertenty spashed onto cothng then the affected cothes shoud be changed and washed forthwth. Never aow brne to dry on the skn or cothes. f brne s spashed nto the eye, wash the eye at once wth copous amount of fresh water. B) Mxng of a CaC2 brne p (.20 SG) usng CaC2 powder: The foowng nstructons are for the mxng of 50 bbs of Cacum Chorde brne n the sug pt, the formuaton s to be verfed by a pot check performed at the we ste.. Thoroughy cean the sug pt and fush a the mxng nes and hoppers that are to be used for mxng wth water. Aso fush cean wth water the transfer nes from the sug pt to the Haburton unt. 2. Add 46 bbs of drwater to the sug pt. 3. Add +/ bs of Cacum Chorde (Peadow) (94 bs/bb) to the dr water whe crcuatng through the mxng hopper. NOTE: a) Fud n the sug pt s to be thoroughy agtated durng mxng or the Cacum Chorde fakes w drop out and sette on the bottom of the tank. b) Ths mxng process s a exothermc reacton therefore as the brne s qute hot whe beng mxed t w wegh ess when ntay mxed than when cooed down. C. To vscosfy the above pre-mxed (50 bbs) Cacum Chorde brne.. Reduce the ph of the brne to beow 5 by the addton of J286 powder or HC acd. test 3/2-5 9

21 . - n, 2. Add +/- 50 bs (50 bs/000 ga) of J64 (HEC) to the brne. ' NOTE: The J64 s to be added SLOWLY to the brne whe ^ crcuatng through the mxng hopper. f not added SLOWLY "fsh eyes" w form whch coud possby cause formaton damage ater. Agtate for 30 mns to ensure the J64 (HEC) s fuy dspersed and hydrated. The vscosty shoud start to bud after 5-30 mns dependent upon ph and ambent temperature. 3. Add caustc soda (whe takng the standard precautons for handng) to the brne and ncrease the ph to around 8.5. NOTE: Ensure that the caustc soda s fuy dspersed n the geed brne before addng more as precptates w form f the ph ncreases above 0. The We ste Petroeum Engneer s to conduct and montor the above brne mxng and geng procedures to ensure correct formuaton etc. > test 3/2-5 20

22 ',»', É! j CONTNGENCY MEASURES A. Surface Leaks/Mafunctons. Mnor surface eak/mafuncton: APPENDX 7 a) Cose n the we downhoe at the PCT vave by beedng off annuus pressure. b) Repar the mnor eak/mafuncton and re-pressure test the reevant surface equpment as requred. c) Open up the we and resume testng. 2. Major surface eak/mafuncton (assumng the automatc shut down system has actvated). a) Cose n the we downhoe at the PCT vave by beedng off annuus pressure. b) Open the MORV and reverse crcuate the tubng to brne. c) Observe the we dead. d) Crcuate down tubng at 4.5 BPM to cose the MORV. e) Pressure test annuus to 500 ps. f) Compete repars and re-pressure test the reevant surface equpment. Re open the we as foows: a) Open the MORV vave. b) Crcuate dese nto the tubng strng to wthn 4 bbs of the MORV. ncrease pumpng rate to 4.5 BPM to cose the MORV. c) Pressure test annuus to 500 ps/5 mns. d) Re-open we at the PCT vave wth pressure on annuus. B. Subsurface Tubng Leaks. f a tubng eak s suspected the foowng procedure s to be carred out: a) Cose n the we at the fowhead and observe tubng and annuus pressures. b) Buhead tubng contents wth brne. c) RH wth RN-test too and set same n RN-nppe. POH. d) Open the MORV and reverse crcuate the tubng contents to brne and observe tubng dead. Cose the MORV by pumpng W test 3/2-5 2

23 P P P down the tubng at 4.5 BPM. Pressure annuus to 500 ps/5 mns. e) Attempt to pressure test the tubng to 3000 ps. f ths test s OK then proceed wth the test programme, f not carry out step f) beow. f) f ether of the tubng or annuar pressure tests fa then pu the test strng and nspect the tubng and sub assembes cosey for eaks. g) The further test programme w be advsed. C. HYDROGEN SULPHDE (H2S). f H2S s montored n the hydrocarbons produced whe testng (H2S s to be checked for mmedatey hydrocarbons reach surface) the foowng w appy. a) nform She Toopusher and Patform Manager. b) Ar breathng apparatus s to be ready avaabe on the rg foor and rg personne are to be drected to keep cear of areas down wnd of the test equpment and ppework. c) A constant check s to be kept around the rg for H2S, f detected advse the She Drng Supt. and Patform Manager mmedatey. f the presence of H2S s confrmed (n whatever quanttes) the we s to be mmedatey cosed n at the fow head and any eaks n the system traced and remeded. NOTE: Breathng apparatus to be worn whe checkng for eaks. d) f the H2S perssts the test w be termnated by bu headng the tubng contents nto the formaton. D. Deteroratng Weather. The test strng w ony be run once an acceptabe weather wndow has been forecast for the duraton of the test. f the weather begns to deterorate rapdy once the strng has started to be run a hang off too w be pcked up and the strng hung off. f deteroratng weather s expected once the fow testng has commenced the test w be suspended. The we w be secured as outned beow: a) Cose n we downhoe at the PCT vave by beedng off annuus pressure. b) Open the MORV and reverse crcuate the tubng to brne. c) Cose the EZ tree, beed off any pressure n the annuus and montor tubng pressure va the gyco njecton ne. Be prepared to unatch the EZ tree. test 3/2-5 22

24 É. :» APPENDX 8 WELL STATUS 3/ The we has been dred to a Casng Data tota depth of 677 m BDF. Sze Weght Grade Coupng Depth m Coapse nterna (BDF) Strength Yed Capacty BBL/FT 30" 20" 30 X-52 Vetco ATD-RB 29 X-52 Vetco LS-LH 3-3/8" 72 N-80 BTC _ 9-5/8 47 N-80 BTC K ^B p 3. 34" 34" 44" Tubng Data 9.3 C-75 Hydr CS 0.2 C-75 VAM 9.3 C-75 Hydr PH6 Make up torque 3000 ft/bs ft/bs ft/bs /8" 4.6 P-05 VAM 250 ft/bs NOTE : No safety factors ncuded n the pressure ratngs. For make up torque correcton factor for the partcuar dope used, has to be apped. test 3/2-5 23

25 t ^ MEASUREMENTS REQURED A. Durng fow perods Separator pressure, separator temperature T APPENDX 9 The foowng data shoud be recorded durng fowng perods every 5 mns, or whenever a change occurs: WHP, WHT, choke sze fowne pressure Fowrate (gas) and condensate gas rato CGR Annuus pressure (va k ne) n addton, a produced fuds shoud be measured for densty. Gas shoud be anaysed va the mud oggng unt's gas chromatograph, wth H2S measured wth Draeger tubes. Produced water shoud be measured for santy. : B. Durng BHP surveys Durng a BHP surveys the foowng deadweght THP measurements are requred: a) Every mnutes durng nta ubrcator cabraton stop. b) Every 5 mnutes durng fow perod. c) After cosng n for bud up, every mnutes for the frst hour, thereafter every hour. d) Every 5 mnutes durng the gradent stops at 00 m and 200 m above the mue shoe and at seabed. e) Every mnutes durng the fna ubrcator cabraton stop. SAMPLNG REQUREMENTS ^. Recombnaton (PVT) Sampes P - 3 x 700 m o + 3 x 20 tres gas 2. Bottomhoe Sampe 2 x 700 m o ( run) 3. Buk O 3x barre buk o sampes requred. 4. Water! f water s produced: 2 x 25 tres, from separator. test 3/2-5 24

26 APPENDX 0 PROCEDURE FOR RECOMBNATON SAMPLES É A. Gas Sampe. The bottes shoud be propery evacuated wth a vacuum pump. 2. The Weste Petroeum Engneer ensures that bottes are fed up sowy and are at separator pressure pror to beng cosed. 3. Check contaner and vaves for eaks. 4. Mark bottes wth sampe number. 5. F n surface PVT sampng forms.! B. O/Condensate. O/Condensate sampe contaner to be fed wth mercury. p 2. Sowy dspace 500 cc mercury from 600 cc contaner wth o/condensate from separator. 3. The She Petroeum Engneer ensures that bottes are at separator pressure pror to beng cosed. 4. Draw off 50 cc of mercury to create gas cap. 5. Check contaners and vaves for eaks. 6. Mark bottes wth sampe number, date, tme and we no. 7. F n surface PVT sampng forms. Sampe Botte Workng Pressure Capacty W.P. 20 tres (qas) 2,800 ps 0.7 tres (condensate) 0,000 ps test 3/2-5 25

27 APPENDX SAND DETECTON DURNG OL TESTS j Strct montorng of the fowstream for sand w be performed usng: a) Eroson probes wth pressure gauges w be paced at cruca ebows etc. Addtona eroson probes connected up to the automatc shut down system w aso be nstaed. b) A sand trap w be nstaed n the fowne and shoud be used whenever possbe. c) Mantan record of fter sze used n the sandtrap and coect and mark a sand from sandfter. J test 3/2-5 26

28 SPECAL TOOLS N THE TEST STRNG APPENDX 2 t f f PCT Pressure Controed Tester Ths vave s run n the strng to factate downhoe shut-n for webore storage emnaton, down hoe shut-n for safety, and to reduce wrene work. The PCT s a ba vave whch s opened by annu us pump pressure, and cosed by a combnaton of sprng and ntrogen gas pressure. t can be opened and cosed as many tmes as necessary permttng mutpe fow and cosed-n pressure tests. The PCT vave requres approx. 200 ps pressure on the annuus to keep open. The PCT vave run n ths strng s modfed n such a way that t can be run nto the hoe n ocked open poston so that crcuatng above the fapper vave s possbe. A rupture dsc s nstaed pror to runnng the too, trappng a pressure n the too whch keeps the ba vave open. When the strng s nstaed the vave can be actuated by rupturng the dsc wth 2500 ps annuus pump pressure. HRT Hydrostatc Reference Too Ths too s run just beow the PCT vave and w be run n cosed poston and w have no functon durng the test. t s run for competeness of the PCT too (thread connectons). MORV Mutpe Openng Reversng Vave Ths vave s run n the strng to facate dspacement of the tubng content. To open ths vave, pressure s apped through the tubng aganst a cosed PCT vave. The vave needs 9 pressure cyces before t opens. Pumpng rate through the vave shoud not exceed 3 BPM. To cose the vave, the pumpng rate s ncreased to 4.5 BPM and a preset functon n the vave w cose the ports. SSARV Snge Shot Annuus Reversng Vave The SSARV s run n the perforatng strng ony and w be to open at 2500 ps surface pressure. precharged test 3/2-5 27

29 H The She Toopusher w be n overa charge throughout the test. The She Toopusher w be advsed and asssted durng the test by the We Ste P.E. The Reservor Engneer, f onboard, w advse the She Toopusher and/or We Ste P.E. on the reservor engneerng aspects of the test. The She Producton Test Supervsor w advse and assst the Toopusher and We Ste P.E. as and when requested by them. APPENDX 3 TESTNG ORGANZATON SAFETY MEETNGS Safety Meetngs for each crew are to be hed pror to testng actvty. A personne to be nformed of the possbe dangers reated to exposves, mercury, hydrocarbons and hydrogen suphde. Company representatves shoud be present at these meetngs. P test 3/2-5 28

30 " EZ TREE SPACE OUT WE LL RK3 BORGNY DOLPHN fm^- WELL HEAD -CAMERON s*/»", OOOOPS BOP STACK : CAMERON. M V»". OOOO PS ALL DMENSONS TO BE RE-CHECKED ON STE PROR TO RUNNNG ^ DMENSONS M fches NOT SCALE 4V» PH.«TUBNG ^RSEK PPE LOCK. C J ^ ^ RAUZER».. Q RCE.HYORAUUC LATCH ASSY P 0< J» ~ MMM _ t '... ~ M^^M JT_ s f?! f,2 «E. VALVE ASSY. JJ^T" 9.0 -SUCKJOMT J5g?J 7C25.0 TOP WELLHEAD * M.8.0.F u CLEARANCE BETWEEN TOP VWLVE ASSY AND BUND RAMS- 2.4" CLEARANCE BETWEEN TOP 2 NO PPE RAMS AND BOTTOM OF SHOULDER ON SLCK XWT:9.3B" CLEARANCE BETWEEN BOTTOM LOWER PPE RAMS AND TOP OF SHOULDER ON SUCK JONT: 6.B" t,,,, r f «H \ ^ 4J 23 M j ' M ' DATUM FLUTED HANGER 0 9" «V» 9%"WEAR BU SHNS. 5 '/Z M VAN TUBNG FU.M

31 >- E X ; *^ ^*~ O s~ ^ "^ t~ «^ js* r f^ Ḵ «L J ooo f o X 7" h B> Y -L O /L^ -^^ - -*. ^^ - «*> ««_ X n..n*. PERFORATNG/TEST STRNG- WELL N' 3 - X-over 6$ acme (B) x 4^ PH-6 (P) _ /. A" DU A Q U / «. A. u - ^2 rn-o y.z b/t tubng -X-over 4" PH-6 (B) x 4" acme (P) " Fopetro ubrcator vave X-over 4" acme (P) x 4^" PH-6 (P) Aa PH-b b/rt tubng Fopetro E-Z SSTT sck jont tor 9-5/8 _.. _. /. _.^mrt / D \ «QA" \7AM / D \ X -over 4-j acme (D) x J-j VAM (r) on n o K^/f- -..w-: nn \7AM r *7c; -over 3 a VAM (B) x 3^ CS (P) C-75 on oc r\ T K/^*- T or* n.. n -; A -:«4- Ots 3 2 type XA-bSD J? Lb U.J b/rt L-oU pup jont Y nv*»r ^! P9 CR^ Y ^n TF ('P^ Dowe M.O.R.V.. r\^, r^ C C A D \7 Uowe PL w/ shear dsc, cosed HK w/ 3V F (P) Baker type G-22, sea assy w/ 3" F (P) x (B) Baker F- packer ( ) -over Jj 2 Q t TT7 /n\.. o "7/QM \7AM / Tt\ 7 /Q" UAM r>nr> -/-,-! n - b (t) x Z-//o VAM (P) O'- - o 9 7 /ft" t-wr»o DM on/-rtrt n-r\n^ 2 7/Q \/AM «..«-; n -; n *- LENGTH/ UKKH WN D~" M 5. MAX OD A bu* p H t- rvh- O-O "~-"»^. ^- ' > Poyf <-,>-ahc.h -!^-nr 0 7/f" UAM/'3^^r "t f Q f< & n \ X 2 ^.r^*. O "7 /Q"? ^D^ v O T/Q" T7 /D^ T /Q" rx.tn -;^-;»>#- en 2-3/8" pup jont, EU (mn. 30 feet) 2 T/Q" n,n -^>'r>ho 7 /"m-j-, f>0 fef»^^ X ^v«r^>^ O *} /Q 7!T ^T3\ O 7 /Q" TT /'D^. Bu pug FG. ^

32 GUN / SEAL ASSEMBLY SPACE OUT ocator packer 2,5m packer sett depth 528 m p f 572m Top shot j 580 m Bottom

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34 3/2-3 LDL-CML-SGR RUM84 3/OCT/84 jf ToTooo o.o SGR (GftP) Tsoof -OPML ~.~2900 o.o "ésooo otooo" -7~90Cf RHDBCG/C3) ^ FG. 5