EP 3433467 A1 20190130 - DOWNHOLE REBOUND HARDNESS MEASUREMENT WHILE DRILLING OR WIRELINE LOGGING
Title (en)
DOWNHOLE REBOUND HARDNESS MEASUREMENT WHILE DRILLING OR WIRELINE LOGGING
Title (de)
MESSUNG DER RÜCKPRALLHÄRTE IN EINEM BOHRLOCH WÄHREND DES BOHRENS ODER WIRELINE-MESSENS
Title (fr)
MESURE DE DURETÉ PAR REBONDISSEMENT EN FOND DE TROU LORS D'UN FORAGE OU D'UNE DIAGRAPHIE PAR CÂBLE
Publication
Application
Priority
- US 201615077463 A 20160322
- US 2017023367 W 20170321
Abstract (en)
[origin: WO2017165386A1] A method of obtaining a hardness profile of a formation is disclosed. A testing surface in a wellbore impacts the formation to obtain a measurement of formation hardness. A lithological property of the formation is measured and used in determining the rock strength of the formation from the formation hardness. The testing surface may be propelled at the formation a plurality of times to obtain a profile of rock hardness measurements with distance into the formation, including at a surface layer of the formation. Alternatively, the testing surface can be propelled at the formation at multiple energies to obtain formation properties at a plurality of depths into the formation, including at a surface layer of the formation. The rock strength may be used with measurements of geomechanical stress and pore pressure to build a model of the formation in order to develop the formation.
IPC 8 full level
E21B 49/00 (2006.01); E21B 7/06 (2006.01); G01N 3/48 (2006.01); G01V 9/00 (2006.01); G01V 99/00 (2009.01); G06F 17/50 (2006.01)
CPC (source: EP)
E21B 49/00 (2013.01); G01N 3/52 (2013.01); G01N 2203/0244 (2013.01)
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 2017165386 A1 20170928; EP 3433467 A1 20190130; EP 3433467 A4 20191120
DOCDB simple family (application)
US 2017023367 W 20170321; EP 17770966 A 20170321