Patent AU-2008261053-C1 (AU)
Title: Procedures and compositions for reservoir protection
Inventor: CREWS JAMES B
IPC: C09K8/68
Filed: 2008-06-11
Granted: 2013-05-23
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date (10) International Publication Number 11 December 2008 (11.12.2008) PCT W O 2008/151330 Al (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, C09K 8/506 (2006.01) E21B 33/138 (2006.01) CI, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, C09K 8/68 (2006.01) EG, ES, FI, GB, GD, GE, GI, GM, GT, HN, HR, HU, ID, (21) International Application Number: IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, PCT/US2008/066484 LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, (22) International Filing Date: 11 June 2008 (11.06.2008) PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, (25) Filing Language: English SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, (26) Publication Language: English ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 11/754,786 29 May 2007 (29.05.2007) US kind of regional protection available): ARIPO (BW, GI, (71) Applicant (for all designated States except US): BAKER GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, HUGHES INCORPORATED [US/US]; P.O. Box 4740, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), Houston, TX 77210 (US). European (AT, BE, BG, CI, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, (72) Inventors; and NO, PL, PT, RO, SE, SI, SK, TR), OAPI (BF, BJ, CF, CG, (75) Inventors/Applicants (for US only): HUANG, Tianping CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). [US/US]; 19827 Lajuana Lane, Spring, TX 77388 (US). CREWS, James, B. [US/US]; 5206 Sunshine Point, Published: Willis, TX 77073 (US). with international search report - before the expiration of the time limit for amending the (74) Agent: DUPHORNE, Darin, H.; Baker Hughes Incorpo- claims and to be republished in the event of receipt of rated, P.O. Box 4740, Houston, TX 77027-4740 (US). amendments (81) Designated States (unless otherwise indicated, for every - with information concerning request for restoration of the kind of national protection available): AE, AG, AL, AM, right of priority in respect of one or more priority claims; [Continued on next page] (54) Title: PROCEDURES AND COMPOSITIONS FOR RESERVOIR PROTECTION (57) Abstract: A flow conduit having at least one orifice is placed in the vicinity of a flow source, which in one non-limiting embodiment may be a hydrocarbon reservoir. The flow pathway between the orifice and the source is temporarily blocked with a O degradable barrier. Once the flow pathway is physically placed, the degradable barrier is removed under the influence of an acid, a solvent, time and/or temperature. The flow source and the flow pathways are at least partially covered (and flow blocked by) a temporary coating such as a pseudo-filter cake formed by a viscoelastic surfactant-gelled aqueous drill-in fluid, and the flow conduit is extended to the flow source. The pseudo-filter cake is removed when viscosity is reduced by an internal breaker, and flow is then allowed. The method is useful in one context of recovering hydrocarbons where the flow conduit is a telescoping sleeve or tube that contacts the borehole wall. W O 2008/151330 A1l ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| the decision of the receiving Office regarding the request for restoration is pending and will be published separately once available