Which of the following is not a function of the rotary table?

To reciprocate the drill string up and down

To rotate the drill string and bit

To house and rotate the master bushing

To rotate kelly and drill string

Petroleum Engineering Trivia Quiz!

2.

Bit rotation time is less for?

Roller Cone Bit
PDC Bit

Correct Answer

A. Roller Cone Bit

Explanation

The correct answer is Roller Cone Bit. The explanation for this is that a roller cone bit is designed with multiple rotating cones that have teeth or inserts, allowing it to drill through various formations. This design enables the bit to distribute the drilling force more evenly, reducing the time required for each rotation. On the other hand, a PDC (Polycrystalline Diamond Compact) bit has fixed cutters made of diamond materials, which do not rotate. Therefore, the bit rotation time is less for a roller cone bit compared to a PDC bit.

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3.

The eight-point dull grading system is provided by?

Correct Answer
International Association of Drilling Contractors

Explanation
The eight-point dull grading system is provided by the International Association of Drilling Contractors.

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4.

The formula for effective circulating density is:

{(Density of mud)/(0.052*D)} - Pressure of annulus
Density of mud - Pressure of annulus
Density of mud + (Pressure of annulus / 0.052*D)
Density of mud - (Pressure of annulus / 0.052*D)

Correct Answer

A. Density of mud + (Pressure of annulus / 0.052*D)

Explanation

The formula for effective circulating density is Density of mud + (Pressure of annulus / 0.052*D). This formula takes into account the density of the drilling mud and the pressure in the annulus. By adding the pressure of the annulus divided by 0.052 times the diameter of the hole, the formula calculates the effective circulating density. This value is important in drilling operations as it helps determine the pressure exerted on the formation being drilled and ensures that the drilling process is carried out safely and effectively.

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5.

The normal hydrostatic pressure gradient (in psi/ft.) for freshwater is?

0.433
0.465
0.425
0.450

Correct Answer

A. 0.433

Explanation

The normal hydrostatic pressure gradient for freshwater is 0.433 psi/ft. This means that for every foot of depth, the pressure increases by 0.433 pounds per square inch. The pressure gradient is a measure of how quickly the pressure increases with depth. In this case, the pressure increases by 0.433 psi for every foot of depth.

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6.

A well 8000 ft. deep is drilled onshore. From 6000 ft. to 8000 ft. depth, two different bits are used. Cost of the first bit is $2500 while that of second is $4000. 1150 ft. of depth is drilled using the first bit (from 6000 ft. to 7150 ft.) and the rest depth using the second bit. Rotating time for both the bits is 22 hours and 18 hours respectively. Round trip times for 7150 ft. and 8000 ft. are 6 hours and 6.5 hours respectively. The cost of the rig is $12000/day. Calculate cost per foot for both bits.

Correct Answer
14.34, 19.11
19.11, 14.34

Explanation
The cost per foot for the first bit can be calculated by dividing the cost of the bit ($2500) by the depth drilled using that bit (1150 ft.). This gives a cost per foot of approximately $2.17.

Similarly, the cost per foot for the second bit can be calculated by dividing the cost of the bit ($4000) by the depth drilled using that bit (6850 ft.). This gives a cost per foot of approximately $0.58.

Therefore, the cost per foot for the first bit is 14.34 times higher than the cost per foot for the second bit.

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7.

Calculate the tension in the fast line when lifting a load of 500000 lbs. for 6 lines strung between the crown block and the traveling block. The efficiency factor is 0.874.

Correct Answer
95347, 95347.06

Explanation
The answer provided, 95347 and 95347.06, is likely the result of calculating the tension in the fast line using the given load of 500000 lbs and the efficiency factor of 0.874. The tension in each line can be calculated by dividing the load by the number of lines, and then multiplying by the efficiency factor. The two values may represent the minimum and maximum tension that can be expected in the fast line, depending on factors such as equipment and environmental conditions.

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8.

Triplex mud pumps (having three liners and pistons) are:

Double Acting
Single Acting
Triple Acting
None of these

Correct Answer

A. Single Acting

Explanation

Triplex mud pumps are single acting because they have three liners and pistons, but each piston only performs one stroke per revolution. In a single acting pump, the fluid is only displaced in one direction during each stroke of the piston. This design allows for efficient pumping of fluids, such as mud, in various industries including oil and gas drilling.

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2

9.

The Piper Alpha was producing 300,000 barrels/day of oil for:

Schlumberger
ExxonMobil
Occidental Petroleum
Saudi Aramco

Correct Answer

A. Occidental Petroleum

Explanation

Occidental Petroleum is the correct answer because the question asks for the company that the Piper Alpha was producing oil for. Occidental Petroleum is one of the largest oil and gas exploration and production companies, so it is plausible that they could have been a client of the Piper Alpha platform.

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2

10.

OPEC (Organization of Petroleum Exporting Countries) was established in:

March 1963
September 1960
June 1959
August 1962

Correct Answer

A. September 1960

Explanation

OPEC (Organization of Petroleum Exporting Countries) was established in September 1960. This organization was formed by five founding members, including Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela, with the aim of coordinating and unifying petroleum policies among its member countries. By establishing OPEC, these countries sought to exert control over oil prices and production levels, ensuring stability and fair returns for oil-producing nations. Since its establishment, OPEC has grown to include 13 member countries and continues to play a significant role in global oil markets.

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11.

The era of the Seven Sisters (oil companies) is considered from:

1920-1950
1947-1970
1911-1980
1950-1969

Correct Answer

A. 1911-1980

Explanation

The correct answer is 1911-1980. The era of the Seven Sisters refers to the period when seven major oil companies, including Exxon, Shell, and BP, dominated the global oil industry. This era began in 1911 when the Standard Oil Company was broken up into smaller companies, and it continued until around 1980 when the power and influence of these companies started to decline. During this time, the Seven Sisters controlled a significant portion of the world's oil production, refining, and distribution, shaping global energy markets and geopolitics.

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12.

1 bbl. = gallons = cubic ft. = cubic metre.

42, 5.615, 0.125
42, 8.345, 0.263
42, 5.615, 0.158
42, 62.4, 0.158

Correct Answer

A. 42, 5.615, 0.158

13.

LPG (Liquefied Petroleum Gas) at atmospheric conditions will become:

Liquid lighter than water
Gas lighter than air
Liquid denser than water
Gas denser than air

Correct Answer

A. Gas denser than air

Explanation

LPG (Liquefied Petroleum Gas) at atmospheric conditions will become a gas denser than air. This means that LPG, when released into the atmosphere, will tend to sink and accumulate at lower levels rather than rise and disperse.

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14.

A high octane number means that the fuel will have:

High knock resistance but low compressibility
High knock resistance and high compressibility
Low knock resistance but high compressibility
Low knock resistance and low compressibility

Correct Answer

A. High knock resistance and high compressibility

Explanation

A high octane number indicates that the fuel has a high knock resistance, meaning it can withstand high compression ratios without detonating prematurely. Additionally, high compressibility means that the fuel can be compressed to a smaller volume under high pressure. Therefore, the correct answer is high knock resistance and high compressibility.

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15.

The formation of ash upon burning of petroleum products is due to the presence of:

Oxygen
Sulfur
Nitrogen
None of these

Correct Answer

A. Sulfur

Explanation

The formation of ash upon burning of petroleum products is due to the presence of sulfur. Sulfur is a common impurity found in petroleum products, and when these products are burned, sulfur reacts with oxygen to form sulfur dioxide (SO2) gas. This gas can further react with other compounds in the air to form sulfuric acid (H2SO4), which can then condense and form ash particles. Therefore, the presence of sulfur in petroleum products is responsible for the formation of ash during combustion.

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Petroleum Engineering Trivia Quiz!

Which of the following is not a function of the rotary table?

Quiz Preview

Bit rotation time is less for?

The eight-point dull grading system is provided by?

The formula for effective circulating density is:

The normal hydrostatic pressure gradient (in psi/ft.) for freshwater is?

Calculate the tension in the fast line when lifting a load of 500000 lbs. for 6 lines strung between the crown block and the traveling block. The efficiency factor is 0.874.

Triplex mud pumps (having three liners and pistons) are:

The Piper Alpha was producing 300,000 barrels/day of oil for:

OPEC (Organization of Petroleum Exporting Countries) was established in:

The era of the Seven Sisters (oil companies) is considered from:

1 bbl. =____ gallons =____ cubic ft. =____ cubic metre.

LPG (Liquefied Petroleum Gas) at atmospheric conditions will become:

A high octane number means that the fuel will have:

The formation of ash upon burning of petroleum products is due to the presence of:

1 bbl. = gallons = cubic ft. = cubic metre.