Patent SG-11201406568S-A (SG)
Title: Modular stress joint and methods for compensating for forces applied to a subsea riser
Inventor: DZIEKONSKI MITCHELL Z
IPC: E21B7/12
Filed: 2013-04-15
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 17 October 2013 (17.10.2013) WIPOIPCT (10) International Publication Number WO 2013/154617 A3 (51) International Patent Classification: E21B 7/12 (2006.01) (21) International Application Number: PCT/US2013/000110 (22) International Filing Date: 15 April 2013 (15.04.2013) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 13/506,352 13 April 2012 (13.04.2012) US (72) Inventor; and (71) Applicant : DZIEKONSKI, Mitchell, Z. [US/US]; P.O. Box 1527, Stafford, TX 77497 (US). (74) Agent: MATTIS, Jacob, S.; 2000 Bering Drive, Suite 700, Houston, TX 77057 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, 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, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). [Continued on next page] (54) Title: MODULAR STRESS JOINT AND METHODS FOR COMPENSATING FOR FORCES APPLIED TO A SUBSEA RISER l> •t -10 22_% N 1 -J- 24- ^ 18- 20- 14- 16- (57) Abstract: Modular stress joints usable to compensate for forces applied to a subsea riser or other structure include a base member and one or more additional members. Members having desired lengths can be selected such that the sum of the length of the base member and additional members defines a desired total length. Members having desired wall thicknesses can be selected such that combination of a the wall thicknesses of the base mem­ ber and each additional member defines an overall wall thickness or stiffness. The total length, overall wall thickness, or both correspond to expected forces applied to the subsea riser or structure, such that the stress joint is ad­ apted to compensate for the forces and prevent damage. The number or length of members used and their thickness or other characteristics can be varied provide multiple lengths and stiffnesses, such that to the stress joint is modular and reconfigurable. i-H o CJ o & WO 2013/154617 A3 I lllll llllllll II llllll III lllll lllll III III III lllll lllll lllll lllll lllll llll lllllll llll llll llll Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) (88) Date of publication of the international search report: 25 September 2014