Questions tagged [petroleum]

Questions of[petroleum][5] origin, [history] [1], & methods of production. Examples of [formations] [3]/deposits this is to include [mapping] [4]. Application i:e development of petroleum based products & other usages. Evolution of petroleum technology past, present, & future aligning with [ancient chinese method] [1] to current.

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51
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3answers
7k views

How much oil is created each year?

We all know that oil is an essentially nonrenewable resource over human time scales. However, I am currently working on an activity for high schoolers that teaches them to predict how long humans can ...
22
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1answer
314 views

Estimating the permeability tensor of an oil field by remote sensing

I work a lot with numerical methods to solve multiphase flow in porous media for oil applications. In our field, we often use Darcy's law which states that the flux is negatively proportional to the ...
13
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2answers
293 views

How can the 'abiogenic oil' hypothesis be disproven?

We do know that complex hydrocarbons (e.g., tholins) exist in the outer Solar System. Some geologists maintain that at least some oil on Earth is of non-biological origin. The mainstream, though, ...
11
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1answer
200 views

Why would there be no hydrocarbons in the Sveconorwegian belt?

I've had an inconclusive chat about the Sveconorwegian belt of the Fennoscandian shield, the western parts in particular, and reasons as to why there would not be any deposits of hydrocarbons there. ...
11
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1answer
767 views

The youngest and oldest source rock for hydrocarbons in economic quantities

Most famous and productive source rocks for hydrocarbons are Paleozoic or Mesozoic, but there are also examples from the Neogene. Time is needed for the rock to reach the right depth and temperature ...
10
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3answers
550 views

Is it feasible to use depleted oil wells for geothermal production?

There is an oil field outside my hometown. I wonder if it is feasible to use the same oil wells for geothermal production after oil production rate drops below profitable point.
9
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3answers
2k views

What is the most important source of natural gas? Coal, oil or other?

By heat and pressure, both coal and oil can produce gas. But what is the most important substance for gas? Is there a relation to the amounts of marine organism (sea life) which died and the amount of ...
9
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3answers
8k views

Why is there so much oil in Saudi Arabia, Venezuela and Canada, but almost none in Europe?

Why do some countries have a lot of oil reserves, while some others don't?
7
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3answers
369 views

How does one create petroleum/crude oil for future generations?

I am a geological novice so maybe this is a wrong question. But the idea is to create a thought experiment. How does one "create" petroleum or crude oil for future generations? Is it enough to bury a ...
7
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1answer
283 views

Incised valleys and hydrocarbon potential

The Wikipedia page on sequence stratigraphy states: Sandstone bodies associated with incised valleys are good hydrocarbon reservoirs. Can anyone elaborate on this statement and the reason behind ...
7
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4answers
532 views

In the oil field, when a vertical cylinder coring sample is taken, how is the core severed at the bottom and removed from the formation?

I would like to know how the core is cut off at the bottom of the drill. I also would like to know how the core is brought up to the surface without slipping out and falling back down.
6
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1answer
268 views

Are there probably decent oil fields located in the middle of the ocean?

I did a google image search for a world map of offshore oil. Surprisingly I found virtually nothing. I had to search country by country for such maps. I noticed most if not all were located very near ...
6
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1answer
340 views

Hydrocarbon potential in Ganges Brahmaputra delta

According to Curray (1991): Total sediment thickness beneath the [Ganges–Brahmaputra delta] southeast of the hingezone exceeds 16 km... Considering a normal geothermal gradient and data for oil ...
5
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2answers
1k views

What would happen if magma flows into a very large oil deposit?

If there were an earthquake that somehow cause a crack in the earth and allowed a significant amount of magma to flow into a very large oil deposit. With that high amount of explosive energy that ...
5
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3answers
779 views

How can I test my house water supply for hydrocarbon presence?

I live in a city where the water supply quality seem pretty good on daily/average basis. However, it is also well known that there is a huge problem with deteriorating water pipes. My problem is that ...
5
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1answer
114 views

How much oil was consumed worldwide since it was started to use massively in the mid 19th century?

According to this article from 2015 How much oil is left on Earth 1.5 trillion barrels of crude oil reserves were left in the world by end 2015 But how much oil was already consumed worldwide since ...
5
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1answer
276 views

What is a "show" in petroleum geology?

Is a show when naturally ocurring oil seeps out of a fracture on the surface? Or is it when engineers fracture rocks in order to extract oil?
5
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1answer
227 views

Glossary of oil and gas industry geophysical terms

Reviewing market regulatory standards I came across the problem of finding a source that I could cite of concise, worldwide accepted industry geophysical terms. So far I know Schlumberger Oilfield ...
4
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2answers
154 views

What are the natural causes for methane formation?

Natural gas is mostly made of methane ($\ce{CH4}$). Methane can be produced as a result of microbes eating organic matter. But can it also be naturally formed without any assistance from organic ...
3
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1answer
117 views

How to compare the oil production in barrel vs production in tons

I hope this is the right SE site...I was unsure if to post here or on Physics, but I see there are quite many questions about oil here. So, my question is the following: I would like to compare the ...
3
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1answer
155 views

How much of the petroleum ever formed has made it into reservoir rocks?

I am aware that it's a bit general a question, and petroleum geology (or petrology ;-)) has never been a field of interest to me. A superficial search using related keywords brings up only economic ...
3
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0answers
112 views

Does Earth have any stable bodies of liquid, that are not liquid water?

Overland oil spills are fairly common, so Earth arguably has some transient hydrocarbon lakes. One incident in 2013 dumped nearly 1 million gallons of oil over North Dakota, covering 13 acres of land. ...
2
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3answers
3k views

What is the age of the earth's oil?

Oil in the ground is found under the oceans and seas. It is made of dead fish. But from what period are those fish? I heard they are about 119 million years old. But fish exist much longer than that. ...
2
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3answers
2k views

Petroleum and coal formation

I was wondering why are coal and petroleum being both fossil fuels are found at different places i.e. coal at land and petroleum at sea.
2
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2answers
44 views

What methods do geologists employ to detemine the age of a petroleum deposit?

Petroleum is not considered a rock, but it is formed by a process, so it has an age. What methods do geologists employ to determine the age of a petroleum deposit?
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2answers
172 views

Will kerosene reserves deplete long before oil?

Assuming that the oil reserves would end at a certain date, would it be expected that the kerosene be no longer used as fuel on a previous date due to the quality fall of barrels? If so, would that ...
1
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1answer
122 views

Estimating fracture pressure (looking for literature to support)

I am trying to estimate fracture pressure of a reservoir when applying injection. I keep reading fracture pressure=reservoir pressure+2000psi or fracture pressure gradient is 0.7psi/ft, but I can't ...
1
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0answers
93 views

Possible reasons for field GOR being below Solution GOR(Rs)

It has been noticed in the field multiple times that the field produced GOR is well below the Solution GOR (obtained from PVT properties). Based on Industry observed production data globally, I would ...
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0answers
39 views

Oil production profile of oil fields with water coning [closed]

What is the typical production profile of oil fields with water coning?
0
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0answers
46 views

Caspian Sea oil deposits

Azerbaijan appears to have vast development in its oil sector. Images on google earth show oil platforms connected by road ways far out into the Caspian Sea of the coast of Baku. Why is the majority ...
-6
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1answer
613 views

Is it possible that the recent droughts are signs of epic crust failure? [closed]

The full question is: Is it possible that the recent, successive, long droughts from Australia to the West Coast of both American continents are signs of epic crust failure? The question is aimed ...