Global Patent Index - EP 2992170 A4

EP 2992170 A4 20160615 - RESUMING INTERRUPTED COMMUNICATION THROUGH A WELLBORE

Title (en)

RESUMING INTERRUPTED COMMUNICATION THROUGH A WELLBORE

Title (de)

WIEDERAUFNAHME VON UNTERBROCHENER KOMMUNIKATION DURCH EIN BOHRLOCH

Title (fr)

REPRISE D'UNE COMMUNICATION INTERROMPUE À TRAVERS UN PUITS DE FORAGE

Publication

EP 2992170 A4 20160615 (EN)

Application

EP 14792132 A 20140501

Priority

  • US 201361818175 P 20130501
  • US 2014036354 W 20140501

Abstract (en)

[origin: WO2014179561A1] Resuming communication along a wellbore after a drilling stand or other occurrence that reduces the flow rate of the drilling fluid into a borehole being drilled in a drilling procedure or causes perturbations in the pressure of the drilling fluid in the borehole by measuring a first flow rate of drilling fluid being pumped into the drillstring during the drilling procedure before adding a section of drill pipe to the drillstring or before the pressure perturbation and increasing the flow rate of the drilling fluid being pumped into the drillstring above the first flow rate after the section of drill pipe has been added to the drillstring or the pressure perturbation has occurred.

IPC 8 full level

E21B 21/08 (2006.01); E21B 47/06 (2012.01); E21B 47/18 (2012.01)

CPC (source: EP US)

E21B 21/08 (2013.01 - EP US); E21B 47/06 (2013.01 - EP US); E21B 47/18 (2013.01 - EP US)

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

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

WO 2014179561 A1 20141106; EA 201592080 A1 20160531; EP 2992170 A1 20160309; EP 2992170 A4 20160615; MX 2015015169 A 20160225; US 2016090800 A1 20160331

DOCDB simple family (application)

US 2014036354 W 20140501; EA 201592080 A 20140501; EP 14792132 A 20140501; MX 2015015169 A 20140501; US 201414888436 A 20140501