Patent SG-11201901872U-A (SG)
Title: Wellhead seal with pressure energizing from below
Inventor: FORD DAVID
IPC: E21B33/04
Filed: 2017-08-07
Abstract: Title: WELLHEAD SEAL WITH PRESSURE ENERGIZING FROM BELOW (57) : An annular seal for sealing an interface between a wellhead housing and a casing hanger. The annular seal includes a central body portion and a first pair of seal legs extending in a first direction from the central body portion. Each of the first pair of seal legs sealingly engages one of the wellhead housing or the casing hanger, and are further energized by bore pressure. The annular seal also includes a second pair of seal legs extending in a second direction from the central body portion. Each of the second pair of seal legs sealingly engages one of the wellhead housing or the casing hanger, and is further energized by annulus pressure. VFBP 4 12 120 126 142- 140 1544 - 138a- 144 146 138171 139 137- - 122-, FAP - 130- 162- 132- 158 128- 164 166 136 134- 152 W O 20 18/05 25 66 Al 160 FAR,'\" FIG. 2 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 22 March 2018 (22.03.2018) WIP0 I PCT 0111111010 0111 °nolo III m IIIII ollionno oimIE (10) International Publication Number WO 2018/052566 Al (51) International Patent Classification: E21B 33/04 (2006.01) (21) International Application Number: PCT/US2017/045663 (22) International Filing Date: 07 August 2017 (07.08.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/264,816 14 September 2016 (14.09.2016) US (71) Applicant: VETCO GRAY INC. [US/US]; 4424 West Sam Houston Pkwy North, Suite 100, Houston, TX 77041 (US). (72) Inventors: FORD, David, Lawrence; 4424 West Sam Houston Parkway North, Houston, TX 77041 (US). PAL- LINI, Joseph, William; 4424 West Sam Houston Park- way North, Houston, TX 77041 (US). FRASER, Thomas, Allen; 4424 West Sam Houston Parkway North, Houston, TX 77041 (US). BARNHART, Daniel, Ralph; 4424 West Sam Houston Parkway Norht, Houston, TX 77041 (US). BENSON, Daniel, Caleb; 4424 West Sam Houston Park- way 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). [Continued on next page] WO 2018/052566 Al MIDEDIMOMMIDEFIERIMMIHRIERMOVON Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(11)) 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))