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Name 3 main physical properties of rocks which are logged by wirelines.pptx

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Name 3 main physical properties of rocks which are logged by wirelines.pptx Powered By Docstoc
					Name 3 main physical properties of
rocks which are logged by wirelines:
   a. Electrical, nuclear, acoustic
   b. Electrical, nuclear, water
      content
   c. Shear wave velocity, strength,
      water content
   d. Shear wave velocity, fracture
      patterns, strength
 Name 3 main physical properties of
 rocks which are logged by wirelines:
a. Electrical, nuclear, acoustic
b. Electrical, nuclear, water content
c. Shear wave velocity, strength, water
   content
d. Shear wave velocity, fracture patterns,
   strength
                   Wirelines
• The oil and gas industry records rock and fluid
  properties to find hydrocarbon zones in the
  geological formations intersected by a borehole.
  The logging procedure consists of lowering a
  'logging tool' on the end of a wireline into an oil
  well (or hole) to measure the rock and fluid
  properties of the formation. An interpretation of
  these measurements is then made to locate and
  quantify potential depth zones containing oil and
  gas (hydrocarbons). Logging tools developed over
  the years measure the electrical, acoustic,
  radioactive, electromagnetic, nuclear magnetic
  resonance, and other properties of the rocks and
  their contained fluids.
 You are mapping a transgressive sequence that
 is dipping down slope steeper than the ground
 surface. Would you expect the limestone unit
       to be found upslope or downslope?
a. Not enough given information
b. Downslope
c. Upslope
d. Limestone is not an integral part of a
    transgressive sequence
 You are mapping a transgressive sequence that
 is dipping down slope steeper than the ground
 surface. Would you expect the limestone unit
       to be found upslope or downslope?
a. Not enough given information
b. Downslope
c. Upslope
d. Limestone is not an integral part of a
    transgressive sequence
In the interpretation of the geology of an area one
could first look at some features observable on a
topographic map such as drainage patterns to suffest
geologic information. A trellis drainage pattern could
be indicative of which of the following?

a.   Influence by domes or basins
b.   A tilted rock layer
c.   Folded beds
d.   Uniform surficial geology
In the interpretation of the geology of an area one
could first look at some features observable on a
topographic map such as drainage patterns to suffest
geologic information. A trellis drainage pattern could
be indicative of which of the following?


a.   Influence by domes or basins
b.   A tilted rock layer
c.   Folded beds
d.   Uniform surficial geology
Example of trellis drainage
pattern where juvenile
streams (top to bottom) join
secondary stream flowing
from right to left. This is in
the Babine Range. Trellis
drainage is characteristic of
areas with alternating
parallel valleys and ridges.
Streams occupy the valleys,
flowing parallel to the ridges
but occasionally cutting
across the geological grain at
water gaps.
A ridgeline observed on a map scale of 1:2400 is
offset 3 inches by a strike slip fault. What would
be the offset on the ground surface?
a.   7200 feet
b.   600 feet
c.   300 feet
d.   Can’t be determined by the information
     given
A ridgeline observed on a map scale of 1:2400 is
offset 3 inches by a strike slip fault. What would
be the offset on the ground surface?
a.   7200 feet
b.   600 feet
c.   300 feet
d.   Can’t be determined by the information
     given
• Since the scale is 1:2400,
  1”=2400”.
• 3”=7200”
• 7200” x 1ft ÷ 12” = 600 feet
On a geologic map at a scale of 1:24,000 the
outcrop of a geologic unit measures 0.4 inches
perpendicular to strike. How many feet wide is
the outcrop?
a.   2,000 feet
b.   200 feet
c.   800 feet
d.   9,600 feet
On a geologic map at a scale of 1:24,000 the
outcrop of a geologic unit measures 0.4 inches
perpendicular to strike. How many feet wide is
the outcrop?

a.   2,000 feet
b.   200 feet
c.   800 feet
d.   9,600 feet
• Since the scale is 1:24,000,
  1”=24,000”
• 0.4”=9600”
• 9600” x 1ft ÷ 12”= 800 feet
              A FENSTER is?
A. An erosional remnant of the older geologic
   unit that were thrust over younger units
B. An eroded area of a thrust sheet that
   exposes younger rocks beneath the thrust
C. A klippe
D. A rounded linear remnant left after the
   glaciers melted
              A FENSTER is?
A. An erosional remnant of the older geologic
   unit that were thrust over younger units
B. An eroded area of a thrust sheet that
   exposes younger rocks beneath the thrust
C. A klippe
D. A rounded linear remnant left after the
   glaciers melted
“Window” in German
                  Part uno
• Magnetic declination is constantly changing;
  therefore, if you have an old map on which
  you will be placing data obtained in the field
  you will need to ascertain the correct
  declination before measuring any orientations.
So…. What is the best way(in the field)
to obtain a local magnetic declination?
                   yo
A. Rubbing a needle with silk then placing it in a
   pool of undisturbed water so it points north like
   in that movie The Edge with the guy who looks
   like Sean Connery.. What is it?
B. By orienting the map along a straight road and
   measuring the orientation with a compass
C. By contacting U.S. Geologic survey
D. By checking the established polar wandering
   since the date the map was made.
                 Wait what?
A. Rubbing a needle with silk then placing it in a
   pool of undisturbed water so it points north like
   in that movie The Edge with the guy who looks
   like Sean Connery.. What is it?
B. By orienting the map along a straight road and
   measuring the orientation with a compass
C. By contacting U.S. Geologic survey
D. By checking the established polar wandering
   since the date the map was made.
     What is the process through which
         wood becomes lithified?
A.   Metamorphism
B.   Burial
C.   The great flood of Noah’s day
D.   Putrification
E.   Diagenesis
F.   Mitt Romney

				
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posted:1/22/2014
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