SG11201807635YA - Fwi with areal and point sources - Google Patents

Abstract

202-) Adjust (scale/shape) field data; Mute direct arrival Up/down separation Mute direct arrival r 207 ( -208 FWI A 203-) Downgoing 4 / 7 primaries and multiples ng 1pp Simulate with areal source and absorbing surface; subtract direct arrival 204-) Match modeled and recorded upgoing multiples 200 Point source Simulate with point source and reflecting free surface Form hybrid source 1-1 1-1 1-1 00 00 1-1 N O C•1 O (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 02 November 2017 (02.11.2017) WIP0 I PCT omit VIII Hot 0 HE 1E1111m Hs (10) International Publication Number WO 2017/189180 Al (51) International Patent Classification: GO1V 1/30 (2006.01) (21) International Application Number: PCT/US2017/025706 (22) International Filing Date: 03 April 2017 (03.04.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/327,752 26 April 2016 (26.04.2016) US (71) Applicant (for all designated States except US): EXXONMOBIL UPSTREAM RESEARCH COMPA- NY [US/US]; CORP-URC-E2.4A.296, 22777 Springwoods Village Parkway, Spring, TX 77389 (US). (72) Inventors; and (71) Applicants (for US only): BAUMSTEIN, Anatoly, I. [US/US]; 1522 Chippendale Road, Houston, TX 77018 (US). VDOVINA, Tetyana [GB/US]; 1122 Chelshurst Way, Spring, TX 77379 (US). TANG, Yaxun [CN/US]; 301 Pruitt Rd., #1630, Spring, TX 77380 (US). (72) Inventor; and (71) Applicant: YANG, Di [CN/US]; 59 Meadowridge Place, Spring, TX 77381 (US). (74) Agent: WRKICH, Joseph, E. et al.; Exxonmobil Up- stream Research Company, CORP-URC-E2.4A.296, 22777 Springwoods Village Parkway, Spring, TX 77389 (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, 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, (54) Title: FWI WITH AREAL AND POINT SOURCES FIG. 2 (57) : A method, including performing, with a computer, up/down separation of geophysical data, which produces an approx- imate up-going wavefield and an approximate down-going wavefield; creating an areal source based at least in part on the down-going wavefield; and performing, with a computer, a full wavefield inversion process with the areal source, and an objective function mea- suring a misfit between modeled up-going wavefields and recorded up- going wavefields, wherein the full wavefield inversion process generates a final subsurface physical property model. [Continued on next page] WO 2017/189180 Al MIDEDIMOMOIDEIROIDEMOMMEIHOHMOMOVOIMIE 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). 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))