EP 2069457 A1 20090617 - INCREASED RATE OF PENETRATION FROM LOW RHEOLOGY WELLBORE FLUIDS
Title (en)
INCREASED RATE OF PENETRATION FROM LOW RHEOLOGY WELLBORE FLUIDS
Title (de)
ERHÖHTE PENETRATIONSGESCHWINDIGKEIT RHEOLOGISCH FLACHPROFILIERTER BOHRSPÜLMITTEL
Title (fr)
VITESSE ACCRUE DE PÉNÉTRATION DE FLUIDES DE PUITS DE FORAGE À FAIBLE RHÉOLOGIE
Publication
Application
Priority
- US 2007071344 W 20070615
- US 82515606 P 20060911
- US 61757606 A 20061228
- US 61703106 A 20061228
- US 74168907 A 20070427
- US 74119907 A 20070427
Abstract (en)
[origin: WO2008033592A1] A method of increasing a rate of penetration when drilling as compared to drilling with a baseline drilling fluid comprising an API-grade barite weighting agent and having a given sag, settling rate, density, flow rate, and pressure drop through a wellbore, comprising: circulating a drilling fluid comprising a base fluid and a micronized weighting agent through the wellbore; wherein the drilling fluid is characterized as having an equivalent density, an equivalent or lower settling rate, and an equivalent or lower sag than the baseline drilling fluid; wherein the circulating is at a higher flow rate than the baseline drilling fluid flow rate; and wherein the circulating results in an equivalent or lower pressure drop through the wellbore.
IPC 8 full level
C09K 8/03 (2006.01); C09K 8/32 (2006.01); C09K 8/36 (2006.01)
CPC (source: EP GB US)
C09K 8/02 (2013.01 - GB); C09K 8/03 (2013.01 - EP); C09K 8/032 (2013.01 - EP); C09K 8/32 (2013.01 - EP); C09K 8/36 (2013.01 - EP); E21B 21/08 (2013.01 - EP GB US)
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
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008033592 A1 20080320; AU 2007294626 A1 20080320; AU 2007294626 B2 20110414; BR PI0716973 A2 20130213; CA 2663117 A1 20080320; CA 2663117 C 20120724; EP 2069457 A1 20090617; EP 2069457 A4 20090930; GB 0905100 D0 20090506; GB 2455034 A 20090603; MX 2009002614 A 20090407
DOCDB simple family (application)
US 2007071344 W 20070615; AU 2007294626 A 20070615; BR PI0716973 A 20070615; CA 2663117 A 20070615; EP 07798639 A 20070615; GB 0905100 A 20070615; MX 2009002614 A 20070615