EP 0126680 A2 19841128 - Formation sampling apparatus.
Title (en)
Formation sampling apparatus.
Title (de)
Vorrichtung zur Entnahme von Flüssigkeitsproben aus Erdformationen.
Title (fr)
Dispositif d'échantillonnage de fluides de formations terrestres.
Publication
Application
Priority
US 49528383 A 19830516
Abstract (en)
An apparatus and method for taking fluid samples from earth formations surrounding a borehole while minimizing the erosion of the formations which occurs during such sample-taking, in which a specialized tool is brought into communication with the desired formation and the fluid pressure which exists within the formation prior to taking a sample is used to restrict the flow of fluids into the tool. This restriction is however opposed with a pre-determined biasing force in combination with the dynamic fluid pressure during the sampie-taking process. These opposing forces control the rate of flow of formation fluids into the tool in a manner diminishing the erosion which occurs.
IPC 1-7
IPC 8 full level
E21B 49/10 (2006.01)
CPC (source: EP)
E21B 49/10 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0126680 A2 19841128; EP 0126680 A3 19860604; EP 0126680 B1 19880817; AU 2802684 A 19841122; AU 570462 B2 19880317; BR 8402274 A 19841226; CA 1227418 A 19870929; DE 3473490 D1 19880922; DK 242384 A 19841117; DK 242384 D0 19840516; NO 841934 L 19841119; OA 07772 A 19850830
DOCDB simple family (application)
EP 84400946 A 19840509; AU 2802684 A 19840515; BR 8402274 A 19841116; CA 454313 A 19840515; DE 3473490 T 19840509; DK 242384 A 19840516; NO 841934 A 19840515; OA 58298 A 19840516