Well Logs Test 2 Review

Front 1

FDC

Back 1

Formation Density Compensated

Front 2

DSI

Back 2

Dipole Sonic Imager

Front 3

LSS

Back 3

Long Spaced Sonic

Front 4

BHC

Back 4

Borehole Compensated

Front 5

NGR

Back 5

Natural Gamma Ray

Front 6

CNL

Back 6

Compensated Neutron Log

Front 7

SNP

Back 7

Sidewall Neutron Porosity

Front 8

SGR

Back 8

Spectral Gamma Ray

Front 9

TDT

Back 9

Thermal Decay Time

Front 10

NLL

Back 10

Neutron Lifetime Log

Front 11

SSP

Back 11

Static Spontaneous Potential

Front 12

PSP

Back 12

Psuedo Spontaneous Potential

Front 13

AIT

Back 13

Array Induction Tool

Front 14

PEX

Back 14

Platform Express

Front 15

CMR

Back 15

Compensated Magnetic Resonance

Front 16

MRIL

Back 16

Magnetic Resonance Imager Log

Front 17

MCFL

Back 17

Microformation Density Compensated Log

Front 18

UBI

Back 18

Ultrasonic Borehole Imager

Front 19

FMI

Back 19

Formation Micro Imaging

Front 20

FWL

Back 20

Full Wave Form Logging

Front 21

SNR

Back 21

Signal Noise Ratio

Front 22

ZDL

Back 22

Compensated Z-Density Tool

Front 23

SEN

Back 23

Sidewall Epithermal Neutron

Front 24

CNS

Back 24

Compensated Neutron Sonde

Front 25

ENS

Back 25

Epithermal Neutron Sonde

Front 26

One API unit is defined as 1/100 of the difference in log deflection between the two concrete zones of low and high radioactivity in the standard calibration pit.

Back 26

FALSE; 1/200

Front 27

One API neutron unit is defined as the 1/1000 of the difference between instrument zero and log deflection opposite a six feet zone of Indiana limestone in a neutron calibration pit.

Back 27

TRUE

Front 28

Neutron tool can be run in both open and cased holes.

Back 28

TRUE

Front 29

Transverse relaxation time increases with pore size.

Back 29

TRUE

Front 30

Accepted value of T2 cutoff time for calculating bound and free water is 93 ms for sandstones.

Back 30

FALSE

Front 31

Neutron log can be run in air drilled holes.

Back 31

TRUE

Front 32

Acoustic impedance is product of density and velocity squared.

Back 32

FALSE

Front 33

Shear wave transit time increases as sonic tool passes from water saturated zone to gas saturated zone.

Back 33

FALSE

Front 34

Separation between neutron porosity and density porosity is suppressed in shaley sand.

Back 34

TRUE

Front 35

Wyllie Time Average equation cant be used to calculate porosity in gas saturated formations.

Back 35

TRUE

Front 36

Wyllie Time Average equation cant be used to calculate porosity from shear wave transit time.

Back 36

FALSE

Front 37

For a given wave velocity, wavelength decreases as the frequency of the wave increases.

Back 37

TRUE

Front 38

Higher reflection coefficient higher the amount of reflection at an interface.

Back 38

TRUE

Front 39

Operating principle for cement bond log is Snell's Law

Back 39

FALSE

Front 40

Is the shale index calculated from gamma ray log true representation of shale volume?

Back 40

FALSE

Front 41

FDC tool looks deeper into formation as compared to CNL tool.

Back 41

FALSE

Front 42

Modulus of a material is product of its density and velocity.

Back 42

FALSE

Front 43

Photo electric constant is assumed to be independent of porosity.

Back 43

TRUE

Front 44

Separation between neutron porosity and density porosity is suppressed in shaley sands.

Back 44

FALSE

Front 45

In a borehole, critical angle for compressional waves is higher than the critical angle for shear waves.

Back 45

FALSE

Front 46

Shale index calculated from gamma ray log true representation of shale volume

Back 46

FALSE