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1. (WO2017095322) DRILL PIPE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/095322 International Application No.: PCT/SE2016/051220
Publication Date: 08.06.2017 International Filing Date: 05.12.2016
IPC:
E21B 17/00 (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
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Applicants:
DRICONEQ PRODUCTION AB [SE/SE]; Box 325 686 26 Sunne, SE
Inventors:
ANDERSSON, Lars; SE
ÖHRN, Anders; SE
Agent:
BERGENSTRÅHLE & PARTNERS GÖTEBORG AB; Lindholmspiren 5A SE-417 56 Göteborg, SE
Priority Data:
1551588-503.12.2015SE
Title (EN) DRILL PIPE
(FR) TIGE DE FORAGE
Abstract:
(EN) The present invention relates to a drill pipe (1) comprising at least a central portion (2), a first end piece (3) and a second end piece (4), where the end pieces (3, 4) permit interconnection with mating parts of another drill pipe (1), said central portion (2) comprising a cylindrical tube, wherein said central portion (2) is arranged with an inner pipe (5) arranged at an inner wall (20) of said central portion (2) and having a wall thickness (t) which reduces the volume (V) of the void inside the central portion (2) with at least 10 %, more preferred at least 25 % and most preferred at least 50 %.
(FR) La présente invention concerne une tige de forage (1), comprenant au moins une partie centrale (2), un premier embout (3) et un second embout (4), lesdits embouts (3, 4) assurant l'interconnexion avec des parties correspondantes d'une autre tige de forage (1), ladite partie centrale (2) comprenant un tube cylindrique, ladite partie centrale (2) étant agencée avec un tube interne (5) disposé sur une paroi interne (20) de ladite partie centrale (2) et présentant une épaisseur de paroi (t) qui réduit le volume (V) du vide à l'intérieur de la partie centrale (2) d'au moins 10 %, de préférence d'au moins 25 % et de manière préférée entre toutes d'au moins 50 %.
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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, JP, KE, KG, 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: English (EN)
Filing Language: English (EN)