Patent SG-11201907500V-A (SG)
Title: Seismic acquisition geometry evaluation using full-waveform inversion
Inventor: AHMED IMTIAZ
IPC: G01V1/28
Filed: 2017-12-04
Abstract: CLIPAN INVERSE OF THE DWI IMAGE (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 07 June 2018 (07.06.2018) WIPO I PCT (51) International Patent Classification: GO1V 1/28 (2006.01) GO1V 1/30 (2006.01) (21) International Application Number: PCT/US2017/064503 (22) International Filing Date: 04 December 2017 (04.12.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/429,569 02 December 2016 (02.12.2016) US (71) Applicant: BP CORPORATION NORTH AMERICA, INC. [US/US]; 501 Westlake Park Boulevard, Houston, TX 77079 (US). (72) Inventor: AHMED, Imtiaz; 150 W. Warrenville Road, MC 200-1W, Naperville, IL 60563 (US). (74) Agent: REED, KaRan; BP America Inc., 150 W. War- renville Road, MC 200-1W, Naperville, IL 60563 (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). 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: 09 August 2018 (09.08.2018) (54) Title: SEISMIC ACQUISITION GEOMETRY EVALUATION USING FULL-WAVEFORM INVERSION 100 — (57) : A method for use in seismic exploration includes: obtaining a diving wave illumination image of a subterranean region from a set of seismic data representative of the 105 subterranean region using a selected acquisition geometry; clipping an inverse of the diving wave illumination image to a range of values; and performing a weighted full-waveform inversion. The weighted full-waveform inversion further includes: weighting a full-wave- form inversion gradient with the clipped inverse of the diving wave illumination image; 110 and performing the full-waveform inversion using the weighted gradient. omit °nolo im min 111E1111°111 (10) International Publication Number WO 2018/102813 A3 W O 20 18/ 10 28 13 A3 115a, WEIGHT A FWI GRADIENT WITH THE CLIPPED INVERSE OF THE DWI IMAGE \", I 1151)„ .. 1_ PERFORM THE FWI WITH THE WEIGHTED GRADIENT FIG.