EP 0874947 B1 20030820 - CORE SAMPLING METHOD AND CORE SAMPLER THEREFOR
Title (en)
CORE SAMPLING METHOD AND CORE SAMPLER THEREFOR
Title (de)
KERNBOHRVERFAHREN UND KERNBOHRWERKZEUG ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE DE CAROTTAGE ET CAROTTIER POUR SA MISE EN OEUVRE
Publication
Application
Priority
- BE 9700005 W 19970115
- BE 9600033 A 19960115
Abstract (en)
[origin: WO9726439A1] A core sampling method, particularly for the oil industry, wherein actual core sampling is performed by means of a core sampler (1) comprising at least one inner barrel (5), an outer barrel (2) and a bit (3), and a substantially axial compressive force (F) is exerted on the top (7A) of a core sample (7) being formed, at least during a major part of the core sampling process, said force being within a range determined particularly on the basis of the material of the core sample (7), whereafter the force (F) is removed at the latest before the core sample (7) is withdrawn from the inner barrel (5). A core sampler for carrying out the method is also provided.
IPC 1-7
IPC 8 full level
E21B 25/00 (2006.01); E21B 25/08 (2006.01)
CPC (source: EP US)
E21B 25/00 (2013.01 - EP US); E21B 25/08 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 9726439 A1 19970724; BE 1009968 A5 19971104; CA 2242922 A1 19970724; CA 2242922 C 20040525; DE 69724230 D1 20030925; DE 69724230 T2 20040609; EP 0874947 A1 19981104; EP 0874947 B1 20030820; NO 316131 B1 20031215; NO 983237 D0 19980714; NO 983237 L 19980902; US 6164389 A 20001226
DOCDB simple family (application)
BE 9700005 W 19970115; BE 9600033 A 19960115; CA 2242922 A 19970115; DE 69724230 T 19970115; EP 97900512 A 19970115; NO 983237 A 19980714; US 10148398 A 19981119