Patent SG-11201807927Q-A (SG)
Title: Oil-based drilling fluids containing an alkaline-earth diamondoid compound as rheology modifier
Inventor: MOHAMMED MUSARRAT H
IPC: C09K8/82
Filed: 2017-03-09
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 111111110111101110101011111010111110111011110011111111101101111101111011111 International Bureau .. .... ..Yejd .... ..or::,,, (10) International Publication Number (43) International Publication Date WO 2017/160570 Al 21 September 2017 (21.09.2017) WIP0 I PCT (51) International Patent Classification: Box 5000, Dhahran, 31311 (SA). ALABEDI, Gasan Sel- C09K 8/34 (2006.01) C09K 8/82 (2006.01) man; c/o Saudi Arabian Oil Company, Post Office Box 5000, Dhahran 31311 (GB). WHITING, Andrew; c/o (21) International Application Number: Durham University, South Road, Durham DH1 3LE (GB). PCT/US2017/021478 HODDER, Michael Hayward; c/o M-I Drilling Fluids (22) International Filing Date: UK Limited, Pocra Quay Footdee, Aberdeen AB11 5DQ 9 March 2017 (09.03.2017) (GB). (25) Filing Language: English (74) Agents: MEYER, Christopher I. et al.; Dinsmore & Shohl LLP, One South Main Street Fifth Third Center, (26) Publication Language: English Suite 1300, Dayton, Ohio 45402 (US). (30) Priority Data: (81) Designated States (unless otherwise indicated, for every 62/309,662 17 March 2016 (17.03.2016) US kind of national protection available): AE, AG, AL, AM, (71) Applicants: SAUDI ARABIAN OIL COMPANY AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, [SA/SA]; Post Office Box 5000, Dhahran, 31311 (SA). BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DURHAM UNIVERSITY [GB/GB]; South Road, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, Durham DH1 3LE (GB). M-I DRILLING FLUIDS UK HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, LIMITED [GB/GB]; Pocra Quay Footdee, Aberdeen KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, AB11 5DQ (GB). MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, (71) Applicant (for AG only): ARAMCO SERVICES COM- RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, — PANY [US/US]; 9009 West Loop South, Houston, Texas TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, — 77096 (US). ZA, ZM, ZW. _ (72) Inventors: MOHAMMED, Musarrat H.; c/o Durham (84) Designated States (unless otherwise indicated, for every = University, South Road, Durham DH1 3LE (GB). kind of regional protection available): ARIPO (BW, GH, GREENWELL, Hugh Christopher; c/o Durham Univer- GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, = sity, South Road, Durham DH1 3LE (GB). VEER- TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, = ABHADRAPPA, Manohara Gudiyor; c/o Durham Uni- TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, versity, South Road, Durham DH1 3LE (GB). HALL, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, = John Adrian; c/o Saudi Arabian Oil Company, Post Office LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, = [Continued on next page] = — (54) Title: OIL-BASED DRILLING FLUIDS CONTAINING AN ALKALINE-EARTH DIAMONDOID COMPOUND AS RHE- = OLOGY MODIFIER = = aoaoo = _ 35000 30030 = = 25000 _ 20000 - 0 = - WOO 10000 5000 _ 0 20 30 50 11 DEGREES (20) FIG. 1 0 IN 11 in © 1-1 ---. (57) : An oil-based drilling fluid and method of preparing an oil-based drilling fluid are disclosed. The oil-based drilling IN fluidcomprising a base oil continuous phase, an aqueous discontinuous phase, and at least one rheology modifier. The at least one O rheology modifier including an alkaline-earth diamondoid compound. The method of preparing the oil-based drilling fluid including N mixing a base oil, at least one emulsifier, and at least one wetting agent to form a first mixture, adding and mixing at least one rhe - O ology modifier into the first mixture to form a second mixture, adding and mixing at least one fluid-loss control additive into the ,-t second mixture to form a third mixture, adding and mixing a brine solution into the third mixture to form a fourth mixture, and adding and mixing a weighting additive into the fourth mixture to form the oil-based drilling fluid. WO 2017/160570 Al MIDEDIMOMOIDEIR010130HIMIRINEDIREVOIMIE SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, as to the applicant's entitlement to claim the priority of GW, KM, ML, MR, NE, SN, TD, TG). the earlier application (Rule 4.17(iii)) Declarations under Rule 4.17: Published: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(0 with international search report (Art. 21(3))