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1. (WO2019024531) METHOD FOR DEEP PROFILE MODIFICATION AND FLOODING OF LOW-PERMEABILITY RESERVOIR
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/024531 International Application No.: PCT/CN2018/082670
Publication Date: 07.02.2019 International Filing Date: 11.04.2018
IPC:
C09K 8/588 (2006.01) ,E21B 43/22 (2006.01) ,C08F 220/58 (2006.01) ,C08F 220/56 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
58
Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
588
characterised by the use of specific polymers
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
43
Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
16
Enhanced recovery methods for obtaining hydrocarbons
22
Use of chemicals or bacterial activity
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
220
Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02
Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
52
Amides or imides
54
Amides
58
containing oxygen in addition to the carbonamido oxygen
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
220
Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02
Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
52
Amides or imides
54
Amides
56
Acrylamide; Methacrylamide
Applicants:
中国石油天然气股份有限公司 PETROCHINA COMPANY LIMITED [CN/CN]; 中国北京市 东城区东直门北大街9号 9 Dongzhimen North Street, Dongcheng District Beijing 100007, CN
Inventors:
吴天江 WU, Tianjiang; CN
郑明科 ZHENG, Mingke; CN
李宪文 LI, Xianwen; CN
杨海恩 YANG, Haien; CN
黎晓茸 LI, Xiaorong; CN
唐凡 TANG, Fan; CN
薛芳芳 XUE, Fangfang; CN
陈荣环 CHEN, Ronghuan; CN
张荣 ZHANG, Rong; CN
郑力军 ZHENG, Lijun; CN
徐春梅 XU, Chunmei; CN
刘保彻 LIU, Baoche; CN
易萍 YI, Ping; CN
朱家杰 ZHU, Jiajie; CN
毕卫宇 BI, Weiyu; CN
Agent:
北京三友知识产权代理有限公司 BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD.; 中国北京市 金融街35号国际企业大厦A座16层 16th Fl., Block A, Corporate Square No.35 Jinrong Street Beijing 100033, CN
Priority Data:
201710640026.631.07.2017CN
201810233253.121.03.2018CN
Title (EN) METHOD FOR DEEP PROFILE MODIFICATION AND FLOODING OF LOW-PERMEABILITY RESERVOIR
(FR) PROCÉDÉ DE MODIFICATION DE PROFIL PROFOND ET D'INONDATION D'UN RÉSERVOIR À FAIBLE PERMÉABILITÉ
(ZH) 一种低渗透油藏深部调驱的方法
Abstract:
(EN) A method for deep profile modification and flooding of a low-permeability reservoir, comprising: sequentially injecting a soft elastic particle pre-slug, a polymer microsphere main slug, and a soft elastic particle protection slug into an oil layer, the ratio of total injection volumes of the three slugs being 1-2:6-8:1-2. The method provides a solution for profile modification and flooding by combining styrene soft elastic particles and polyacrylamide polymer microspheres, wherein the soft elastic particles can fill oil layer cracks and large pores, and the polymer microspheres can displace remaining oil in the oil layer. The method adopts the combination of different profile modification and flooding system slugs to achieve the purpose of filling cracks and large pores, displacing crude oil, and increasing oil recovery.
(FR) L'invention concerne un procédé destiné à la modification de profil profond et à l'inondation d'un réservoir à faible perméabilité, comprenant : l'injection séquentielle d'un pré-bouchon de particules élastiques molles, d'un bouchon principal de microsphères de polymère et d'un bouchon de protection de particules élastiques molles dans une couche de pétrole, le rapport des volumes d'injection totaux des trois bouchons étant de 1-2:6-8:1-2. Le procédé fournit une solution destinée à une modification de profil et à une inondation, par combinaison de particules élastiques molles de styrène et de microsphères de polymère de polyacrylamide, les particules élastiques molles pouvant remplir des fissures de couche de pétrole et de grands pores, et les microsphères de polymère pouvant déplacer le pétrole restant dans la couche de pétrole. Le procédé adopte la combinaison de différents bouchons de modification de profil et de système d'inondation en vue d'atteindre le but de remplir des fissures et de grands pores, de déplacer du pétrole brut et d'augmenter la récupération de pétrole.
(ZH) 一种低渗透油藏深部调驱的方法,其包括:依次向油层注入柔弹性颗粒前置段塞、聚合物微球主段塞、柔弹性颗粒保护段塞,且三个段塞总注入量的体积比为1-2:6-8:1-2。该方法提供了一种采用苯乙烯类柔弹性颗粒与聚丙烯酰胺聚合物微球组合的调驱方法,其中,柔弹性颗粒可以封堵油层裂缝和大孔道,聚合物微球可驱替油层剩余油,本方法采用不同调驱体系段塞组合达到封堵裂缝和大孔道、驱替原油及提高油井采收率的目的。
Designated States: 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)