B PET1

Petrophysics

0.0 (0)

S. L.

Étudier

S. L.

À propos de ce fichier

This flashcard set is designed for primary school students exploring nature studies, particularly focusing on geological concepts. It covers key topics like neutron and density logs, various rock types such as limestone, sandstone, and shale, and their properties. The flashcards also delve into nuclear magnetic resonance (NMR) techniques, explaining how they work and their applications in studying fluid properties and porosity. This set is beneficial for young learners who are beginning to understand the fundamentals of geology and related scientific principles.

Cartes-fiches

Utilisateurs

Langue

Anglais

Catégorie

Histoire naturelle

Niveau

École primaire

Créé / Mis à jour

11.04.2013 / 21.04.2013

Fichiers de cartes similaires

Dolomite

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

n>rho

Limestone n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

n=rho

Chert

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

rho>n

Shale

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

n>>rho

Sandstone

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

both high

rho>n

Coal

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

both massive ie. repeated scale

rho>n

Gamma ray variations?

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

shaly increases, low for everything else

Ironstone

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

very low rho i.e off end of scale

Halite

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

rho>>>n

extremes

Gypsum

n vs. rho

Commandes clavier:

= tourner,

= avant/arrière,

= faire défiler

largest n (extreme)

average rho

Anhydrite

n vs. rho

both low

extremes

rho

density porosity

neutron porosity

primary vs. secondary porosity

primary=orignal

secondary=created after diagenisis

chert limestones dolomite

density and neutron log order

cold long days precede nights

when log gets stuck (caliper)

fake kick in neutron log

NMR affects what water?

free water

How does NMR work?

(hydrogen protons) of the free water are made to spin at 90 degrees to earths axis

signal of how much they are spinning is recorded

The initial maximum amplitude of the received signal is proportional to the formation POROSITY

The decay rate of the received signal is related to molecular interactions taking place in the fluid and is related to the pore- and grain size distribution

what information can NMR give?

Clay-bound water (CBW) Capillary-bound water (BVI) Producible fluids (BVM

Evaporite n and rho logs graphs

Chert resistivity on the log

less conductive

1 / 21

Cartes-fiches

Dolomite

n vs. rho

n>rho

Limestone n vs. rho

n=rho

Chert

n vs. rho

rho>n

Shale

n vs. rho

n>>rho

Sandstone

n vs. rho

both high

rho>n

Coal

n vs. rho

both massive ie. repeated scale

rho>n

Gamma ray variations?

shaly increases, low for everything else

Ironstone

n vs. rho

very low rho i.e off end of scale

Halite

n vs. rho

rho>>>n

extremes

Gypsum

n vs. rho

largest n (extreme)

average rho

Anhydrite

n vs. rho

both low

extremes

rho

density porosity

neutron porosity

primary vs. secondary porosity

primary=orignal

secondary=created after diagenisis

chert limestones dolomite

density and neutron log order

cold long days precede nights

when log gets stuck (caliper)

fake kick in neutron log

NMR affects what water?

free water

How does NMR work?

(hydrogen protons) of the free water are made to spin at 90 degrees to earths axis

signal of how much they are spinning is recorded

The initial maximum amplitude of the received signal is proportional to the formation POROSITY

The decay rate of the received signal is related to molecular interactions taking place in the fluid and is related to the pore- and grain size distribution