Basic Petroleum Fluids

1. What is the most commonly used density scale for oil?

API Gravity Scale

Specific Gravity Scale

SPE Gravity Scale

2. Usually the source beds are older and deeper than the reservoir rock itself.

True

False

3. Specific gravity is the ratio of a substance's density to the density of fresh water.

True

False

4. Solution Gas-Oil Ratio (GOR) refers to the amount of surface gas that can be dissolved in a stock tank barrel of oil when brought to a specific pressure and temperature.

True

False

5. You can recover every barrel of oil from a reservoir.

True

False

6. What was the majority of today's hydrocarbons formed from?

Volcanoes

Accumulated Organic Material

Meterorites

Radioactive Decay of Uranium

7. As the density of an oil gets lighter, the API gravity will increase.

True

False

8. As the density of an oil gets lighter, what will happen to the value of API Gravity?

It will increase

It will decrease

It will remain the same

9. Hydrocarbons with little or no sulfur are called

Sour

Sweet

Light

Heavy

10. What is gas formed at high temperatures called?

Distilligenic

Hermatogenic

Biogenic

Thermogenic

11. What type of bacteria does not require free oxygen to live?

Anaerobic

Hydrocarboxyl

Aerobic

Mesocarboxyl

12. In what type of environment is the source material for hydrocarbon thought to accumulate?

Rivers

Sea bed

Mountain Top

Alluvial Fans

Dry Lake Bed

13. What causes dissolved gas to come out of a solution?

Increasing pressure

Decreasing pressure

14. The lower the API gravity gets means the lighter the oil gets.

True

False

15. The sulfur keeps the oil from being corrosive.

True

False

16. What is the oil that contains more than 1% Sulfur called?

Sweet

Light

Sour

Intermediate

Strong

Delicious

17. During which era does the majority of today's hydrocarbon production come from?

Cenozoic

Mesozoic

Pre-Combrian

Palezoic

Your mom

18. Will 1,000 barrels of a typical oil brought to the surface take up more, less or the same amount of space as it did downhole?

More

Less

The Same

19. How old is the Earth?

460 Million Years

4.6 Million Years

4.6 Billion Years

46 Million Years

20. What is thought to be the primary source of organic material for hydrocarbon generation?

Plankton

Trilobytes

Dinosaurs

Trees

21. Where is the material for hydrocarbon generation thought to accumulate?

Meteorites

The Highest Mountaintops

River Channels

Volcanoes

Warm Shallow Seas

22. How is the porosity of the formation normally determined?

From a full bore core of the reservoir

From pressure transient testing

From a resistivity tool

From a porosity logging tool

From surface seismic

23. During which era were the majority of present day reservoirs deposited?

Mesozoic

Cenozoic

Triassic

Jurassic

Pre-Cambrian

24. Common recovery efficiencies are

10% - 30%

30% - 60%

60% - 80%

80% - 100%

25. What is the 7758 constant for the reserves equation?

Converts Acre-ft to Stock Tank Barrels

Converts gallons to Stock Tank Barrels

Corrects for gas oil ratio

Corrects for temperature effects of bringing the oil to surface conditions

26. What is the name of the supercontinent which existed during the late Paleozoic and early Mesozoic eras?

Jurassic

Pangaea

Tectonica

Ageana

Quaternaria

27. The weight of the hydrocarbon is greatly influenced by the

Paraffin content

Scale content

Dissolved gas in the oil

Additive content

28. Name the 4 eras of geologic time.

Cenozoic

Paleozoic

Mississippian

Pre-Cambrian

Triassic

Quaternary

Jurassic

Mesozoic

Submit

29. What does an oil's formation volume factor reflect?

The expansion of the volume because of the decrease in temperature

The decrease of the volume because the pressure is decreased

The expansion of the volume because the pressure is decreased

The decrease of the volume because of the release of dissolved gases in the oil

30. Thickness of a reservoir is determined by the

Well logs

Seismic surveys

Pressure transient analysis

Cores

31. What is the most common primary source rock for hydrocarbons?

Diatomites

Chert

Shale

Sandstones

Dolomites

32. Gas developed in shallow sources is called

Anaerobic

Thermogenic

Biogenic

Catagenesis

33. Special alloy wireline should be used in low sulfur wells.

True

False

34. What would the API Gravity be of an oil with a density of 6.87 Ib/gal?

39

40

38

41

42

35. Match the eras of geologic time to the numbers representing youngest to oldest (1 being the youngest and 4 being the oldest)

1

2

3

4

Submit

36. Increasing the dissolved gas causes the oil to

Have a lower viscosity

Have a higher viscosity

Have a lower density

Have a higher density

37. During which era did the dinosaurs live?

Paleozoic

Mesozoic

Jurassic

Triassic

Cenozoic

Pre-Cambrian

Quarternary

Jurassic Park

Submit

40. How is the drainage area of the well normally determined?

From pressure transient testing

From a porosity logging tool

From a full bore core of the reservoir

From a resistivity tool

From surface seismic

Submit

Basic Petroleum Fluids

1. What is the most commonly used density scale for oil?

2.

What first name or nickname would you like us to use?

2. Usually the source beds are older and deeper than the reservoir rock itself.

3. Specific gravity is the ratio of a substance's density to the density of fresh water.

4. Solution Gas-Oil Ratio (GOR) refers to the amount of surface gas that can be dissolved in a stock tank barrel of oil when brought to a specific pressure and temperature.

5. You can recover every barrel of oil from a reservoir.

6. What was the majority of today's hydrocarbons formed from?

7. As the density of an oil gets lighter, the API gravity will increase.

8. As the density of an oil gets lighter, what will happen to the value of API Gravity?

9. Hydrocarbons with little or no sulfur are called

10. What is gas formed at high temperatures called?

11. What type of bacteria does not require free oxygen to live?

12. In what type of environment is the source material for hydrocarbon thought to accumulate?

13. What causes dissolved gas to come out of a solution?

14. The lower the API gravity gets means the lighter the oil gets.

15. The sulfur keeps the oil from being corrosive.

16. What is the oil that contains more than 1% Sulfur called?

17. During which era does the majority of today's hydrocarbon production come from?

18. Will 1,000 barrels of a typical oil brought to the surface take up more, less or the same amount of space as it did downhole?

19. How old is the Earth?

20. What is thought to be the primary source of organic material for hydrocarbon generation?

21. Where is the material for hydrocarbon generation thought to accumulate?

22. How is the porosity of the formation normally determined?

23. During which era were the majority of present day reservoirs deposited?

24. Common recovery efficiencies are

25. What is the 7758 constant for the reserves equation?

26. What is the name of the supercontinent which existed during the late Paleozoic and early Mesozoic eras?

27. The weight of the hydrocarbon is greatly influenced by the

28. Name the 4 eras of geologic time.

29. What does an oil's formation volume factor reflect?

30. Thickness of a reservoir is determined by the

31. What is the most common primary source rock for hydrocarbons?

32. Gas developed in shallow sources is called

33. Special alloy wireline should be used in low sulfur wells.

34. What would the API Gravity be of an oil with a density of 6.87 Ib/gal?

35. Match the eras of geologic time to the numbers representing youngest to oldest (1 being the youngest and 4 being the oldest)

36. Increasing the dissolved gas causes the oil to

37. During which era did the dinosaurs live?

38. Calculate the API Gravity of an oil with a density of 6.95 Ib/gal.

39. Calculate the reserves in Stock Tank Barrels for a 160 acre reservoir with a porosity of 15% and water saturation of 34%. The reservoir is 20 feet thick with a formation water resistivity of .12 ohm-meters at 70F. The formation temperature is 220F and the formation volume factor is 1.3.

40. How is the drainage area of the well normally determined?

41. Determine reserves in stock tank barrels for the following well:A 30 foot thick limestone with drainage radius of 1,290 feet, 10% porosity, 21% water saturation and a formation volume factor of 1.15. There are 43,560 square feet in one acre.