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1. (WO2015123140) DOWNHOLE SELF-ISOLATING WELLBORE DRILLING SYSTEMS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/123140 International Application No.: PCT/US2015/015016
Publication Date: 20.08.2015 International Filing Date: 09.02.2015
IPC:
E21B 7/00 (2006.01) ,E21B 21/08 (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
7
Special methods or apparatus for drilling
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
21
Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
08
Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
Applicants: SAUDI ARABIAN OIL COMPANY[SA/SA]; 1 Eastern Avenue Dhahran, 31311, SA
ARAMCO SERVICES COMPANY[US/US]; 9009 West Loop South Houston, Texas 77210-4535, US (AG)
Inventors: ZHOU, Shaohua; SA
Agent: BRUCE, Carl E.; US
Priority Data:
14/177,42311.02.2014US
Title (EN) DOWNHOLE SELF-ISOLATING WELLBORE DRILLING SYSTEMS
(FR) SYSTÈME DE FORAGE DE PUITS DE FORAGE AUTO-ISOLANT DE FOND DE TROU
Abstract:
(EN) A downhole self-isolating wellbore drilling system to pulverize formation cuttings which includes a cutting grinder tool (102) and an isolation tool (110). The cutting grinder tool (102) can be attached to a drill string (104) uphole relative to a drill bit (106) attached to a downhole end of the drill string (104). The cutting grinder tool (102) can receive and pulverize formation cuttings resulting from drilling a formation using the drill bit (106). The isolation tool (110) can be attached to the drill string (104) uphole relative to the cutting grinder tool (102). The isolation tool (110) can control flow of the pulverized formation cuttings mixed with a drilling mud uphole through the drill string (104).
(FR) L'invention porte sur un système de forage de puits de forage auto-isolant de fond de trou pour pulvériser des carottes de formation, lequel système comprend un outil de broyage de carotte (102) et un outil d'isolation (110). L'outil de broyage de carotte (102) peut être fixé à un train de tiges de forage (104) en haut de trou par rapport à un trépan de forage (106) fixé à une extrémité de fond de trou du train de tiges de forage (104). L'outil de broyage de carotte (102) peut recevoir et pulvériser des carottes de formation résultant du forage d'une formation à l'aide du trépan de forage (106). L'outil d'isolation (110) peut être fixé au train de tiges de forage (104) en haut de trou par rapport à l'outil de broyage de carotte (102). L'outil d'isolation (110) peut commander un écoulement des carottes de formation pulvérisées mélangées à une boue de forage en haut de trou à travers le train de tiges de forage (104).
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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: English (EN)
Filing Language: English (EN)