Global Patent Index - EP 2817486 A4

EP 2817486 A4 20160302 - WELL DRILLING SYSTEMS AND METHODS WITH PUMP DRAWING FLUID FROM ANNULUS

Title (en)

WELL DRILLING SYSTEMS AND METHODS WITH PUMP DRAWING FLUID FROM ANNULUS

Title (de)

BOHRLOCHBOHRSYSTEME UND VERFAHREN MIT EINER EINE FLÜSSIGKEIT AUS EINEM RING ZIEHENDEN PUMPE

Title (fr)

SYSTÈME ET PROCÉDÉS DE FORAGE DE PUITS AVEC ASPIRATION PAR UNE POMPE D'UN FLUIDE D'UN ESPACE ANNULAIRE

Publication

EP 2817486 A4 20160302 (EN)

Application

EP 12869370 A 20120224

Priority

US 2012026419 W 20120224

Abstract (en)

[origin: WO2013126064A1] A well pressure control method can include regulating pressure in a wellbore by operating a suction pump which draws fluid from an annulus formed between a drill string and the wellbore, the fluid entering the suction pump proximate the earth's surface. Another well pressure control method can include regulating pressure in a wellbore by operating a suction pump which applies suction pressure to an annulus formed between a drill string and the wellbore. A well drilling system can include a suction pump positioned proximate the earth's surface. The suction pump can receive fluid which exits an annulus formed between a drill string and a wellbore.

IPC 8 full level

E21B 21/08 (2006.01); E21B 21/10 (2006.01)

CPC (source: EP US)

E21B 21/08 (2013.01 - EP US); E21B 21/10 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2013126064 A1 20130829; AU 2012370472 A1 20140703; AU 2012370472 B2 20151001; BR 112014017674 A2 20170620; BR 112014017674 A8 20170711; EP 2817486 A1 20141231; EP 2817486 A4 20160302; MX 2014010132 A 20140908; MX 353838 B 20180131

DOCDB simple family (application)

US 2012026419 W 20120224; AU 2012370472 A 20120224; BR 112014017674 A 20120224; EP 12869370 A 20120224; MX 2014010132 A 20120224