Global Patent Index - EP 2007970 A4

EP 2007970 A4 20141112 - DISPERSIVE RISERLESS DRILLING FLUID

Title (en)

DISPERSIVE RISERLESS DRILLING FLUID

Title (de)

DISPERSIVE, SETZLOSE BOHRFLÜSSIGKEIT

Title (fr)

FLUIDE DISPERSIF DE FORAGE SANS TUBE PROLONGATEUR

Publication

EP 2007970 A4 20141112 (EN)

Application

EP 07760926 A 20070419

Priority

  • US 2007066983 W 20070419
  • US 79303106 P 20060419
  • US 73705807 A 20070418

Abstract (en)

[origin: US2007246221A1] A method for drilling riserless that includes providing a drilling fluid to a drilling assembly for drilling a borehole on a seafloor, the drilling assembly comprising a drill string and a bottomhole assembly, and wherein the drilling fluid includes a brine, and a non-hydratable clay, wherein the drilling fluid is substantially free of hydrating clays, and flowing the drilling fluid and cuttings through an annulus formed by the drill string and the borehole into sea water is disclosed.

IPC 8 full level

E21B 43/00 (2006.01); C09K 8/14 (2006.01); E21B 7/128 (2006.01); E21B 21/00 (2006.01); E21B 43/11 (2006.01)

CPC (source: EP US)

C09K 8/145 (2013.01 - EP US); E21B 7/128 (2013.01 - EP US); E21B 21/001 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

US 2007246221 A1 20071025; AU 2007240399 A1 20071101; AU 2007240399 B2 20110609; BR PI0710460 A2 20110816; CA 2649574 A1 20071101; CA 2649574 C 20110920; EA 200870450 A1 20090428; EP 2007970 A2 20081231; EP 2007970 A4 20141112; MX 2008013311 A 20081027; MY 146020 A 20120615; NO 20084782 L 20090115; WO 2007124368 A2 20071101; WO 2007124368 A3 20071206

DOCDB simple family (application)

US 73705807 A 20070418; AU 2007240399 A 20070419; BR PI0710460 A 20070419; CA 2649574 A 20070419; EA 200870450 A 20070419; EP 07760926 A 20070419; MX 2008013311 A 20070419; MY PI20084075 A 20070419; NO 20084782 A 20081112; US 2007066983 W 20070419