EP 1039095 A3 20010411 - Downhole drill bit
Title (en)
Downhole drill bit
Title (de)
Bohrmeissel
Title (fr)
Trépan de forage
Publication
Application
Priority
US 12511999 P 19990319
Abstract (en)
[origin: EP1039095A2] A downhole tool has a body defining a proximal end for connection to a drill string and a distal end which defines a pilot section and an intermediate reamer section. Both the pilot and the reamer sections define cutting surfaces. The body defines a rotational diameter and a smaller pass-through diameter. Stabilizing means arc coupled to the body opposite either the reamer or the pilot section . <IMAGE>
IPC 1-7
IPC 8 full level
E21B 10/26 (2006.01); E21B 10/42 (2006.01); E21B 10/43 (2006.01)
CPC (source: EP US)
E21B 10/265 (2020.05 - EP US)
Citation (search report)
- [XY] EP 0058061 A2 19820818 - DRILLING & SERVICE UK LTD [GB]
- [Y] GB 2317632 A 19980401 - SMITH INTERNATIONAL [US]
- [A] US 5765653 A 19980616 - DOSTER MICHAEL L [US], et al
- [A] US 5678644 A 19971021 - FIELDER COY [US]
- [A] FR 1249499 A 19601230 - EUROP DE TURBOFORAGE SOC
- [A] CSONKA, G. ET AL.: "Ream While Drilling Technology Applied Succesfully Offshore Australia", SPE36990, 28 October 1996 (1996-10-28), Adelaide, pages 271 - 278, XP002153941
- [A] ROTHE J R ET AL: "REAM-WHILE-DRILLING TOOL CUTS COSTS OF THREE VENEZUELAN WELLS", OIL AND GAS JOURNAL,US,PENNWELL PUBLISHING CO. TULSA, vol. 95, no. 2, 13 January 1997 (1997-01-13), pages 33 - 34,36,38-40, XP000685109, ISSN: 0030-1388
- [T] "Hughes Christensen's Drill Out RWD tool", INTERNET ARTICLE, XP002154028, Retrieved from the Internet <URL:http://www.bakerhughes.com/hcc/holeopen/dosrwd.htm> [retrieved on 20001128]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1039095 A2 20000927; EP 1039095 A3 20010411; EP 1039095 B1 20050518; DE 60020185 D1 20050623; DE 60020185 T2 20060112
DOCDB simple family (application)
EP 00302231 A 20000320; DE 60020185 T 20000320