Global Patent Index - EP 2673469 A4

EP 2673469 A4 20160113 - METHOD AND TOOL FOR EVALUATING A GEOLOGICAL FORMATION

Title (en)

METHOD AND TOOL FOR EVALUATING A GEOLOGICAL FORMATION

Title (de)

VERFAHREN UND WERKZEUG ZUR BESTIMMUNG EINER GEOLOGISCHEN FORMATION

Title (fr)

PROCÉDÉ ET OUTIL POUR L'ÉVALUATION D'UNE FORMATION GÉOLOGIQUE

Publication

EP 2673469 A4 20160113 (EN)

Application

EP 12744840 A 20120208

Priority

  • AU 2011900395 A 20110208
  • AU 2012000111 W 20120208

Abstract (en)

[origin: WO2012106758A1] A method of evaluating a geological formation (20) of non-homogeneous porosity and permeability, particularly in exploration for hydrocarbon fluids, comprising the steps of: (a) inserting a formation evaluation tool (30) into a borehole (10) to a location (10a) within the geological formation (20); (b) setting the formation evaluation tool (30) into position isolating interval(s) of the borehole (10) with a packer arrangement (50) forming portion of the formation evaluation tool (30), for sample evaluation for said interval(s); (c) extracting representative samples of formation fluid from the location within the geological formation (20) for evaluation under downhole conditions using sampling means (32a, 52b, 54b) operative to extract formation fluid samples over a range of porosity and permeability encountered within the geological formation (20); and (d) analysing the formation fluid samples and measuring formation (20) permeability. A formation evaluation tool (30) for practising the method, and including an packer arrangement (50) for isolating intervals of the borehole (10) for sample acquisition and evaluation, is also disclosed. The method and tool (30) are particularly suited to geological formations comprising complex carbonate rocks such as mudstones, Wackestone, Packstone, Boundstone and crystalline carbonate rocks which typically include features such as vugs and fractures.

IPC 8 full level

E21B 49/10 (2006.01)

CPC (source: EP US)

E21B 47/00 (2013.01 - US); E21B 49/08 (2013.01 - US); E21B 49/10 (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

DOCDB simple family (publication)

WO 2012106758 A1 20120816; AU 2012214101 A1 20130822; EP 2673469 A1 20131218; EP 2673469 A4 20160113; US 2014014331 A1 20140116

DOCDB simple family (application)

AU 2012000111 W 20120208; AU 2012214101 A 20120208; EP 12744840 A 20120208; US 201213984122 A 20120208