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1. (WO2007003894) WELLBORE CLEANING METHOD AND APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/003894 International Application No.: PCT/GB2006/002389
Publication Date: 11.01.2007 International Filing Date: 29.06.2006
IPC:
E21B 37/02 (2006.01) ,E21B 37/04 (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
37
Methods or apparatus for cleaning boreholes or wells
02
Scrapers specially adapted therefor
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
37
Methods or apparatus for cleaning boreholes or wells
02
Scrapers specially adapted therefor
04
operated by fluid pressure, e.g. free-piston scrapers
Applicants:
SPECIALISED PETROLEUM SERVICES GROUP LIMITED [GB/GB]; Arnhall Business Park Westhill Aberdeen AB32 6UF, GB (AllExceptUS)
TELFER, George [GB/GB]; GB (UsOnly)
Inventors:
TELFER, George; GB
Agent:
KENNEDYS PATENT AGENCY LIMITED; 185 St Vincent Street Glasgow G2 5QD, GB
Priority Data:
0513645.202.07.2005GB
Title (EN) WELLBORE CLEANING METHOD AND APPARATUS
(FR) PROCEDE ET APPAREIL DE NETTOYAGE DE PUITS DE FORAGE
Abstract:
(EN) This invention relates to well cleaning methods and apparatus. In particular, this invention relates to a method of drilling and cleaning a wellbore. In one embodiment of the invention, a method of drilling and cleaning a wellbore (12) is disclosed. The method comprises the steps of providing a drill string (10) having a drill bit (28) and a cleaning tool (24) with selectively activatable cleaning members (34); drilling a wellbore using the drill bit while maintaining the cleaning members in a deactivated position; and pulling the drill string from the wellbore with the cleaning members in an activated position, to thereby clean the wellbore. A corresponding cleaning tool is also disclosed.
(FR) L'invention concerne des procédés et un appareil de nettoyage de puits. Elle porte notamment sur un procédé de forage et de nettoyage d'un puits de forage. Dans un mode de réalisation, un procédé de forage et de nettoyage d'un puits de forage (12) est décrit. Ce procédé consiste à prévoir un train de forage (10) possédant un trépan (28) et un outil de nettoyage (24) doté d'éléments de nettoyage pouvant être activés sélectivement (34) ; à forer un puits de forage au moyen d'un trépan tout en maintenant les éléments de nettoyage dans une position désactivée ; et à tirer le train de forage du puits alors que les éléments de nettoyage sont dans une position activée, afin de nettoyer ainsi le puits de forage. Un outil de nettoyage correspondant est également décrit.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO20080610NO20141070MXMX/a/2007/015922US20090025927US20130220596CA2612092
EA200800239CA2863886