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Machine translation
1. (WO2001000960) DEVICE BY TOOL ADAPTED TO CHANGE THE DRILLING DIRECTION WHILE DRILLING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/000960    International Application No.:    PCT/NO2000/000213
Publication Date: 04.01.2001 International Filing Date: 21.06.2000
Chapter 2 Demand Filed:    29.12.2000    
IPC:
E21B 7/06 (2006.01)
Applicants: BAKKE TECHNOLOGY AS [NO/NO]; Opstadveien 11, N-4330 Ålgård (NO) (For All Designated States Except US).
BAKKE, Stig [NO/NO]; (NO) (For US Only)
Inventors: BAKKE, Stig; (NO)
Agent: HÅMSØ, Eivind; Håmsø Patentbyrå Ans, Jostein Soppeland, Box 171, N-4302 Sandnes (NO)
Priority Data:
19993138 24.06.1999 NO
Title (EN) DEVICE BY TOOL ADAPTED TO CHANGE THE DRILLING DIRECTION WHILE DRILLING
(FR) DISPOSITIF CONSTITUE D'UN OUTIL CAPABLE DE MODIFIER LE SENS DE FORAGE EN COURS DE FORAGE
Abstract: front page image
(EN)The invention relates to a device by a tool (1) adapted for changing the direction of drilling during drilling. The drilling equipment used in the drilling preferably comprises a drill string such as coiled tubing, a bent sub, drilling motor and drill bit. The tool (1) is positioned between the drill string and the bent sub, comprises housing elements (2-5) connected to one another, and has a passage for, i.a., fluid such as drilling fluid. The tool can be activated for rotation of the bent sub, so that the direction of drilling is changed. The object of the invention is to provide a tool, whereby the rotation of the bent sub can take place in an infinitely variable manner. This is realised by means of means (18, 20-24, 26, 27) positioned in the passage of the tool (1), and comprising a valve (20-24) adapted for choking the passage, so that the tool (1) can be activated for rotation, a piston (18) adapted for providing the rotation after the passage has been choked, and sets of co-operating guides (26, 27) adapted for forced guiding of the rotation. The guides (26, 27) can be formed by twisted splines formed in the wall of the passage and in the wall of the piston (18) opposite.
(FR)L'invention concerne un dispositif constitué d'un outil (1) capable de modifier le sens de forage en cours de forage, De préférence, le matériel de forage utilisé comprend un train de forage du type à tube enroulé, un raccord coudé, un moteur de forage et un trépan. L'outil (1), placé entre le train de forage et le raccord coudé, comprend des éléments de boîtier (2-5) reliés entre eux, et il comporte un passage, emprunté entre autres par un fluide du type liquide de forage. L'outil peut être activé pour mettre en rotation le raccord coudé, de manière à modifier le sens de forage. Aux fins de l'invention, cet outil peut entraîner la rotation du raccord coudé de façon variable, sans aucune limitation. On y parvient en utilisant un système (18, 20-24, 26, 27) placé dans le passage de l'outil (1), qui comprend une vanne (20-24) capable d'obturer le passage, de sorte que l'outil (1) puisse être mis en rotation, un piston (18) capable d'assurer la rotation une fois le passage obturé, et des jeux de guides qui coopèrent (26, 27), capables de guider la rotation en force. Ces guides (26, 27) peuvent être des cannelures torsadées formées dans la paroi du passage et dans la paroi du piston (18) à l'opposé.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Norwegian (NO)