SG11201804955YA - System and method for performing well operations - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization IIIM1411011101010111110101111 101E0101H 01010110111011n III International Bureau 0.. .... .. ..... ..or::,„, (10) International Publication Number (43) International Publication Date WO 2017/102109 Al 22 June 2017(22.06.2017) WIPO I PCT (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every E21B 15/00 (2006.01) E21B 15/02 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, PCT/EP2016/069859 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 23 August 2016 (23.08.2016) KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (25) Filing Language: English PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (26) Publication Language: English SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: 20151749 18 December 2015 (18.12.2015) NO (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant: ODFJELL DRILLING AS [NO/NO]; P.O. GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, Box 33 Kokstad, N-5863 Bergen (NO). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (72) Inventors: STANGHELLE, Rune; Kokstadveien 155, N- TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, 5257 Kokstad (NO). KLEPSVIK, Hakon; Jacob Kjodes- LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, veg 16, 5232 Paradis (NO). BORSHOLM, Thomas; Ovst- SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, tunvegen 24 B, 5223 Nesttun (NO). GW, KM, ML, MR, NE, SN, TD, TG). (74) Agent: ONSAGERS AS; P.O. Box 1813 Vika, N-0123 — Oslo Published: (NO). — with international search report (Art. 21(3)) = = = = (54) Title: SYSTEM AND METHOD FOR PERFORMING = 119 — 2_7 = 107 -------5\ 110 = = 108 WELL OPERATIONS (57) : System and associates method for per- forming well operations in a plurality of hydrocarbon - ' I 109 wells (120a, 120b, 120c) of a wellhead cluster (104), which system comprises a main drilling rig (106) com- prising a main drilling unit (107) displaying a drill floor e.., 118 (108) and comprising a drilling and hoisting system (109) arranged to operate on the drill floor about a well 117 centre (110), wherein the main drilling unit is posi- tioned at least partially vertically above the wellhead = = cluster enabling the drilling and hoisting system to per- - = 106 101c form well operations in the plurality of hydrocarbon wells. A plurality of secondary drilling units (105a, 105b), each comprising its own drilling equipment for 105b 105a performing drilling operations, are positioned on the .b wellhead cluster below the main drilling unit for per- forming well operations in the plurality of hydrocarbon 101b 101a wells, wherein the main drilling unit and at least one of . 5 1-1 104 -----7_4,. M .4 At•-• the plurality of secondary drilling units are arranged for 01 0 120c -- Il ei 0 1-1 IN 1-1 0 ei 120b -S — 120a performing alternating well operations in at least one of the plurality of hydrocarbon wells. Fig. 4 O