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1. (WO2019031134) PLUG, RETAINING MEMBER AND WELL DRILLING METHOD USING SAID PLUG
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/031134 International Application No.: PCT/JP2018/025902
Publication Date: 14.02.2019 International Filing Date: 09.07.2018
IPC:
E21B 33/12 (2006.01)
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
33
Sealing or packing boreholes or wells
10
in the borehole
12
Packers; Plugs
Applicants:
株式会社クレハ KUREHA CORPORATION [JP/JP]; 東京都中央区日本橋浜町三丁目3番2号 3-3-2, Nihonbashi-Hamacho, Chuo-ku, Tokyo 1038552, JP
Inventors:
小林 征志郎 KOBAYASHI, Seishiro; JP
吉井 輝明 YOSHII, Teruaki; JP
Agent:
特許業務法人HARAKENZO WORLD PATENT & TRADEMARK HARAKENZO WORLD PATENT & TRADEMARK; 大阪府大阪市北区天神橋2丁目北2番6号 大和南森町ビル Daiwa Minamimorimachi Building, 2-6, Tenjinbashi 2-chome Kita, Kita-ku, Osaka-shi, Osaka 5300041, JP
Priority Data:
2017-15615810.08.2017JP
Title (EN) PLUG, RETAINING MEMBER AND WELL DRILLING METHOD USING SAID PLUG
(FR) BOUCHON, ÉLÉMENT DE RETENUE ET PROCÉDÉ DE FORAGE METTANT EN OEUVRE LEDIT BOUCHON
(JA) プラグ、保持部材、および当該プラグを用いた坑井掘削方法
Abstract:
(EN) Provided is a plug wherein there is no effect such as breaks and the like on the members constituting said plug when blocking a borehole. This downhole plug (10) comprises: a hollow mandrel (1); a seal member (2) attached to the outer peripheral surface of the mandrel (1) and that deforms under pressure; and a socket (3) on the outer peripheral surface of the mandrel (1) and attached next to the seal member (2) on the side of the seal member (2), dowstream from where pressure is applied thereto. In the socket (3), the inner peripheral edge (31a) in contact with the mandrel (1) protrudes toward the seal member's (2) side.
(FR) L'invention concerne un bouchon, lequel ne subit pas de dommages ou similaires au niveau de l'élément le constituant au moment du bouchage d'un puits de forage. Plus spécifiquement, le bouchon (10) de trou de forage selon l'invention comporte: un mandrin creux (1); un élément d'étanchéité (2) situé sur la circonférence externe du mandrin (1) et se déformant sous l'effet de la pression; et une douille (3) qui, sur la circonférence externe du mandrin (1), est fixée adjacente à l'élément d'étanchéité (2) en dessous du point où la pression est exercée sur cet élément d'étanchéité (2). Dans la douille, le bord (31a) de circonférence interne en contact avec le mandrin (1) fait saillie côté élément d'étanchéité (2).
(JA) 坑井孔を閉塞する際に、プラグを構成する部材に対して破壊等の影響を与えないプラグを提供する。ダウンホールプラグ(10)は、中空のマンドレル(1)と、マンドレル(1)の外周面に取り付けられており、圧力を受けて変形するシール部材(2)と、マンドレル(1)の外周面において、シール部材(2)が受ける上記圧力の下流側に、シール部材(2)に隣接して取り付けられているソケット(3)とを備えている。ソケット(3)におけるマンドレル(1)と接する内周縁(31a)は、上記シール部材(2)側に突出している。
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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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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: Japanese (JA)
Filing Language: Japanese (JA)