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1. (WO2001034937) METHOD AND¿ ?DEVICE FOR EXCITING TRANSVERSAL OSCILLATIONS OF A PIPE STRING IN A BOREHOLE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/034937 International Application No.: PCT/RU2000/000450
Publication Date: 17.05.2001 International Filing Date: 09.11.2000
Chapter 2 Demand Filed: 30.05.2001
IPC:
E21B 28/00 (2006.01) ,E21B 31/00 (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
28
Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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
31
Fishing for or freeing objects in boreholes or wells
Applicants:
IVANNIKOV, Vladimir Ivanovich [RU/RU]; RU
IVANNIKOV, Ivan Vladimirovich [RU/RU]; RU
Inventors:
IVANNIKOV, Vladimir Ivanovich; RU
IVANNIKOV, Ivan Vladimirovich; RU
Agent:
POROIKOV, Alexandr Jurievich; ul. Veshnyakovskaya, 28/21-2-16 Moscow, 111395, RU
Priority Data:
9912396810.11.1999RU
Title (EN) METHOD AND DEVICE FOR EXCITING TRANSVERSAL OSCILLATIONS OF A PIPE STRING IN A BOREHOLE
(FR) PROCEDE ET DISPOSITIF POUR EXCITER DES OSCILLATIONS TRANSVERSALES D'UNE COLONNE DE TUBES A L'INTERIEUR D'UN PUITS
Abstract:
(EN) The invention relates to a borehole technology in relation to drilling and the use of boreholes and can be used in particular for intensifying the flow of forming fluids, for cleaning the filtration part of the borehole and for eliminating blockages in the boreholes and for improving the quality of the cementing of the casing strings in said boreholes. The invention also increases the effectiveness of the method by obtaining the oscillations without pumping a liquid the possibility of regulating the oscillation parameters. According to the invention a hammer with a flexible suspension arrangements is placed in a pipe string and periodical radial oscillations are produced in said hammer which transmits the radial impacts to the pipe string. The hammer(s) placed in the pipe string have a maximum cross section of 0.9-0.98 in relation to the internal cross section of the pipe string. The periodical radial oscillations of the hammer are created by its axial displacement within the pipe string at a speed selected according to the required force of impact.
(FR) L'invention relève du domaine des techniques de puits liés au forage et à l'exploitation de puits et peut s'utiliser notamment pour intensifier les écoulements de fluides de formation, purifier la partie de filtration des puits et pour liquider les coinçages par pression différentielle dans les puits et améliorer la qualité de cimentage des colonnes de tubage dans les puits. Selon l'invention, on place dans la colonne un ou plusieurs marteaux accrochés à une suspension souple. Le ou les marteaux placés dans la colonne ont une section transversale maximale qui a un rapport avec la section interne de la colonne compris entre 0,9 et 0,98. On crée des oscillations périodiques radiales du marteau en déplaçant lesdits marteaux axialement dans la colonne à une vitesse qu'on sélectionne en partant du principe de transmettre à la colonne des chocs ayant une force requise.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, 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, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
Publication Language: Russian (RU)
Filing Language: Russian (RU)