Patent SG-11201811143Y-A (SG)
Title: Wickers with trapped fluid recesses for wellhead assembly
Inventor: FORD DAVID
IPC: E21B33/04
Filed: 2017-06-29
Abstract: O N O O GC O r•i O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 04 January 2018 (04.01.2018) W I PO I PCT mu °million °nolo loomomolionio oimIE (10) International Publication Number WO 2018/005740 Al (51) International Patent Classification: E21B 33/04 (2006.01) F16L 15/00 (2006.01) (21) International Application Number: PCT/US2017/039902 (22) International Filing Date: 29 June 2017 (29.06.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/196,940 29 June 2016 (29.06.2016) US (71) Applicant: VETCO GRAY INC. [US/US]; 4424 West Sam Houston Pkwy North, Suite 100, Houston, TX 77041 (US). (72) Inventors: FORD, David, L.; 4424 West Sam Hous- ton Pkwy North, Houston, TX 77041 (US). BORNIA, Guaraci; 4424 West Sam Houston Pkwy North, Houston, TX 77041 (US). LOPES, Hugo; 4424 West Sam Houston Pkwy North, Houston, TX 77041 (US). SILVA, Ricardo; 4424 West Sam Houston Pkwy North, Houston, TX 77041 (US). (74) Agent: DOMBROWSKI, Joanna, M. et al.; General Elec- tric Company, Global Patent Operation, 901 Main Avenue, 3rd Floor, Norwalk, CT 06851 (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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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, SA, 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, ST, 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, KM, ML, MR, NE, SN, TD, TG). (54) Title: WICKERS WITH TRAPPED FLUID RECESSES FOR WELLHEAD ASSEMBLY (57) : A wellhead assembly includes a wellhead housing having a bore with a wellhead housing sidewall and a longitudinal axis. A hanger lands in the bore, the hanger having a hanger sidewall. Parallel circumferentially extending hanger sidewall ridges are located on the hanger sidewall. Each of the hanger sidewall ridges have upper and lower flanks that converge to a crest. Hanger sidewall bands are located between adjacent ones of the hanger sidewall ridges. A metal seal ring has an outer seal surface in metal -to-metal sealing engagement with the wellhead housing sidewall and an inner seal surface in metal -to-metal sealing engagement with the hanger sidewall bands. Crests of the hanger sidewall ridges embed into the inner seal surface to restrict relative movement between the hanger and the seal ring. A recess extends through each of the hanger sidewall ridges from the upper flank to the lower flank to allow any fluid trapped between the hanger sidewall ridges to flow out. [Continued on next page] WO 2018/005740 Al MIDEDIMOMMIDIIMMEHVIRIMEMOMOVOIMIE Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))