Talk:List of oil fields

Orinoco Tar Sands
According to this article, The Orinoco Tar sands are said to be the largest in the world Not to dminish the Orinoco deposits in any way but I gather contributors here have not heard of the Athabasca Tar Sands in Canada which are said to contain more oil reserves than any other single source including Saudi Arabia. Anyone know which deposit is the most substantial ? One facility alone is being developed north of Fort McMurray Alberta at this time with a Capex of $30 Billion CAD. Projects currently on the boards for (conservatively) >$100B worth of capital projects between now and 2012. If the Orinoco is bigger that is all well and good, however, what matters is which deposit is most likley to be developed fully? Our money is on Athabasca which is in politically stable, Alberta, Canada (FYI Alberta borders the USA) and not Venezuela where it is anyone's guess what might happen politically. Capital is fluid and generally only goes where it is wanted and is secure. The site is quickly becoming the darling of world oil interests and their capital funding. Google Athabasca Tar Sands or Fort McMurray Alberta and have a peek...

Orinoco reserves
The Orinoco oil province in Venezuela contains about 1.7 trillion barrels of oil in place.


 * These numbers are all over the map. Some seem to be estimated recovery and others are oil in place.  I assume others are probably reserve estimates.


 * For instance the Cantarell feild in Mexico is about 35 billion oil in place with an ultimate recovery of about 50%. So the posted size of 15-23 in this case seems to be ultimate recoverable.


 * OTOH the Tar Sands have about 1.7-1.8 billion in place with somewhat under 300 billion now classified as reserves.


 * The data should be sortable two (2) ways: (1) by field size and (2) by current production rates.


 * For each field the production history should be shown. This will change month to month so whether this is done montly or yearly is an open question.  But it would be good to try for monthly.


 * Next the total oil in place, reserves etc should be shown. Also it should be noted when the estimates were made because changing technology will change this.


 * We should also show total production to date and an estimate of remaining reserves and remaining oil in place. Some history of the feilds would also be great... and how poorly managed some were.  For example the Turner Valley feild south of Calgary had its gas cap flared.  Not only was this a criminal was of a none renewable natural resource - it also destroyed the reservoir pressure with the result that probably 80% of the oil has been left behind and it is a hell of a job to get it out.


 * It would be a good idea to indicate who operates each feild as well. However that becomes rather complex because you can have ownerrship split by well, zone, pool, battery and so on.  I once wrote software to do this!


 * From good numers we can derive decline rates and it would be good to show this graphically.


 * The date the feild was first discovered and also when it was put on production should also be shown. The discovery record in a play typically follows a log normal distribution so if you organise the data properly then this can be used to forecast the ultimate that will be found in a given play.  I know where there is software to do this.  But to do it you really need to know each pool involved and when it was found so the data here really needs to be beefed up.


 * It likely would not be practical to do this. But the CIA has done it in some areas.  Which I cannot say because they are too secretive.  However I can say I know for sure they were doing this because they had the software even though they wouldn't admit it or even who they were!


 * If we beef up this page then I expect it will become a major resource and ppl will maintain it because it is such a valuable reference. What is here is a good start but it sure needs work!

Billion or trillion
1.7 trillion in venezuela!? or is it billion?

Oil reserves are classified into categories - proven, probable and possible. The tar sands in venezuela do not fit into any of these quantities due to two reasons. 1)It's very heavy oil and not conventional oil (it contains a lot of contaminants like sulfur, heavy metals and carbon) 2) It's a possible reserve.

It's approximately 1,700 Billion barrels of oil in place. You cannot extract but maybe 50% of this oil at most. Furthermore, it takes a LOT of energy to extract heavy crude oil. Kgrr 03:27, 5 July 2007 (UTC)

Tell that the Canadian province of Alberta and Saskatchewan, also to mention the at least during its "pioneer" phase "Oil sand Capital" Fort McMurray. I can't say if there is Permafrost as it goes pretty far to the North and the location itself does not create that much heat like a City in the million(s), but real living spaces was very much worth and even "Living Containers" placed well were very expensive, same for single rooms as some families with a House and a free room could make really good money with that room and allowing the person to use the toilet or invested something and build a 2nd bathroom with an open apartment-style kitchen, just enough for a single worker and the price increased heavy. There were hard times since than, like since late 2008 until prices recovered, than the price war (2016?) and than a bit better time and now pandemic... however as below can be seen only until incl. 2018 the production went up and imports to the US did so too, in many week over 4 million barrels oil per day were exported to the US, almost all via that Pipeline from Alberta/Central Canada to the Gulf of Mexico (Keystone XXL or so?!) and also in this region I guess trains and maybe even crude trucks could have been operating with profit for the most time, like oil in that area a bit further south on the US side also used heavy train transport, extreme many oil tanking wagons were pushed/carried by up to 3 locomotives just to reach a slow tempo but the number of wagons looked from some perspective like it had no end, in other places with very low density and because of that infrastructure (Montana and Wyoming being worst I would say there, but in the eastern-corner of Montana I think in the border area to North Dakota the "Bakken" formation lies and it was the Nr. 1 of the Shale Oil Basins where newest technology was used and at least for a while nice production was achieved, also parts of South Dakota had not the best infrastructure and with all the million barrels from Canada the demand is very low even if we try to refine some crude somewhere in this area and bring the products to the customers in the producing states and export to the nearest other states (= markets) like Nebraska, Minnesota, Idaho, Iowa, Wisconsin, Utah or Colorado the real "big ones" are a bit more away and the pipelines go to or come from the Gulf of Mexico, on its way there it crosses many important areas like Cushing, Oklahoma... the place where a large part of the US SPR and I think private/commercial oil storages was build, somehow it must have been cheap/easy there or they wanted to have it a bit away from both endings but still pretty central...

Canada is increasing its oil production for a longer period now, no very large steps but I'm sure the crude oil production not just in Alberta but in whole Canada is going down in total and since this has to be replaced Canada did well, I updated the German Wikipedia article about Crude oil/Tables and Graphics, which incl. Top 40 oil producing countries, I hope one day an easy program can read the data out, because doing it per hand really is more work than most people think, I had the (June it seems?) 2019 BP Energy Review as most recent Source in early May 2020. If in June 2020 a new came I would have waited maybe, but already 2 years were missing, and I have to correct myself... Canada made BIG steps in production... here a longer period, in 2000 it produced "only" 126.9 mln tons, in 2010 this increased (after the Oil Price collapse/crash in 2008 and the Financial Crisis starting in 2007 in the US) to 164.4 mln tons, 2013 a large increase to 195.1 mln, 2016 already 218.0 mln, 2017 there was a price war since 2016 afair but the 2014-2016 period was good and so the earlier investments kicked in and Canada produced 235.4 mln tons in 2017 and 255.5 million tons in 2018 which made it the 4th largest oil producer and guess where especially the 2017 and 2018 very large increases were coming from... the absolute majority of oil produced outside of Alberta/Saskatchewan is used completely for the demand at the West- and East-Coast areas, while "Central Canada" is not that heavy populated. Calgary in Alberta and Edmonton are 2 large Cities for Canada but together with Saskatoon and Regina the only other places with more than 335k and 260k only 2 more cities in Alberta with more than 100k population are left and the smaller one is really exactly at 100k, thats it for an area alone in Alberta which is almost twice the size of Germany, and only 1 province to the west and there is the Pacific... but a pipeline with over 1 million barrels per day capacity over an distance of like 750km or more (to reach important points before ending in a city with an port would be very expensive and would limit exports and make the use of the Panama Canal necessary for exports to the East-Coast of the Americas or to Europe and Africa the Pacific way is not good, only (South)East-Asia and Australia/Oceania, Japan and Russia, Korea are good to reach from there. Oil sand is oil and thats why Venezuela is the oil richest country by reserves, and Canada with having almost the same amount (each 1/3rd of known global oil sands/bitumen) but only small conventional reserves compared to Venezuela is Nr. 3 in this scenario... maybe with a real updated Shale Oil Map the US could get up really many places because they have like ~10 to 15 years reserves to production left since... a very long time, alone the official reserves from March 2003 when Iraq was invaded are long gone, the reserves updated and upgraded in the early 2010's even with reduced pandemic-production are going down by over 300 million barrels per months and with last pre-corona-impact production even over 400 million (increasing) Kilon22 (talk) 20:06, 22 March 2021 (UTC)

Campos basin
Campos is a basin, not a field. Perhaps someone should modify this to read Country, Basin, Field.

Percentages
I am removing the reserve percentages. It is not adequate to only take the numbers posted here. This gives a distorted view of a country's oil reserves and constitutes original research. The BP statistical review of world energy has the numbers we need. I'll add it to my to do list. --129.173.105.28 16:13, 15 November 2005 (UTC)

Its trillion Comment on direction
I didn't mean for the information to be removed. I just read Simmon's book: "Twilight in the Desert". He has a LOT of data. I will be passing the book on as of tomorrow and I will not have time to organise a template. I will urge others to do this. If we get a nice template set up then we can improve this page in very short order.

Units
I am afraid there are very serious mistakes in this page. First of all, the units used are different. I believe that same units should be used in all fields, not milions, bilions and trilions. So bilions would make sense.. However, using bilions can be quite misleading, as this can mean different things in Europe and USA (bilion vs miliard). Thus I suggest using Gb for bilion (bilion as used in the article). Plus there is another problem of the numbers given here. From my information, some of them are proved reserves, some are probable reserves, some are ultimate and others are resources, not reserves. It is said that the numbers given are inital proved reserves, which is not true. For example the initial proved reserves for the Canada tar sands are 170Gb (accoridng to O&GJ), while 1.7Tb (or 1700Gb, trilion barels) is what is belived to be the ultimate resource. Plus there is no such term as intial reserves used in the petroleum industry. THe proper term is 'ultimate recoverable resourses', or just 'ultimate', which is the current possible reserves (2P) plus cumulative production. In the US they use the sum of proven reserves (1P) and the cumulative prodcution. Initial reserves can only mean one thing - the first estimate of 1P or 2P reserves (proven or possible) - information that almost nobody is actualy interested in. I am changing the inital reserves to Ultimate.

In total, the article is miselading. I do not want to edit it, as there might be some pattern that I could not read, but I guess this is not the case.

Additional information on this page?
I think it would be good to add an extra column to the page covering date of discovery of each oil field —The preceding unsigned comment was added by 151.96.0.8 (talk) 13:14, 5 January 2007 (UTC).
 * I think this is a great idea. I would like to also suggest two columns with the date when the fields were brought into production and the date when peaked.  Perhaps the date when they were exhausted.  If this is voted OK, I will provide the needed research.  Kgrr 13:43, 11 June 2007 (UTC)

Proposed Merge with List of largest oil fields
User:Beagel proposed a merge of this table with the table I created at Peak oil/Table of largest oil fields. There was no discussion on my proposal (above) to add the columns, and the order of this table is not by size, but by geographic location.

This table in its current form does not convey the fact that most of the large oil fields that produce the most oil per day have peaked and all the new oil fields that are being found are much smaller in size and production than the super-elephants listed in the table of largest oil fields. I have trouble with some of the numbers in the table since no references are given as a source for the data. Some figures like the Orinoco Tar sands and the Athabasca Oil sands should only list recoverable reserves, not what may be in the ground. Furthermore, it does not make much sense to list relatively small oil fields since their contribution to the World's appetite for oil is small.

Hence, it does not make any sense in listing any oil field that has less than 1 billion barrels. My table stops at 10 Billion bbls. If they are ordered by size, the log-normal distribution of the oil field sizes becomes readily evident. Succinctly put, there are just a few large oil fields and they are running out. To take their place, it will take many more medium sized ones. For example, to replace the oil flow from Ghawar will take 20-30 Jack 2's Kgrr 04:50, 5 July 2007 (UTC)


 * The merger proposal is already 1.5 years old and there seem to be consensus about this. Should we go forward with this? for more discussion please see Talk:List of largest oil fields. Beagel (talk) 07:02, 24 December 2008 (UTC)

The C.A.R.!
Since when has the C.A.R., Uganda or Mali had any oil fieds and 2 of Mareauiania's oil fields ('Omar' and 1 other) gave no Goole hits and are thus, probaly fakes.--86.29.246.201 (talk) 20:58, 22 November 2007 (UTC)
 * Those were all added by someone with an IP address quite similar to yours. Are you questioning your own work? Cheers Geologyguy (talk) 21:55, 22 November 2007 (UTC)

Read this, User:86.29.246.201-

[] [] —Preceding unsigned comment added by 86.25.54.114 (talk) 22:23, 22 November 2007 (UTC)
 * Those links to articles about farmouts have no information regarding fields, except a mention of M'Boundi field in Congo, and perhaps a discovery (not confirmed as a field) in Uganda. Geologyguy (talk) 16:45, 23 November 2007 (UTC)

I've heared of a minor farm out in the Ubangi river vally, but not actual drillling yet. --Mike A Mitchel jr (talk) 11:36, 10 July 2008 (UTC)

Abu Dhabi not a country
Abu Dhabi is not a country

It is listed as one in this article

It's part of the U.A.E.

&mdash; Stevey7788 (talk) 00:11, 6 July 2008 (UTC)

I agree, it's part of the U.A.E.!--Mike A Mitchel jr (talk) 11:37, 10 July 2008 (UTC)

Add deaths in oil fields
Each oil field should have to list the number of deaths they have yearly. http://www.dothaneagle.com/dea/news/local/article/us_oilfield_deaths_rise_sharply/35837/ Stars4change (talk) 06:32, 7 April 2009 (UTC)

This is not relevant IMHO! This article is about (the largest) oil fields. 598 oil Workers in 6 years for the 3rd largest oil producer is not SOO much. Abroad in "poor" countries the number is higher I think. There are also thousands of deaths in mines, especially in coal mines in China. -- Kilon22 (talk) 22:14, 6 September 2012 (UTC)

Nothing about Marlim
The list hasn't nothing about the Brazilian Marlim oil field.Agre22 (talk) 00:15, 16 September 2009 (UTC)agre22

Nothing about Halfaya oil field
The article has nothing about Halfaya oil field in Iraq.Agre22 (talk) 16:14, 11 December 2009 (UTC)agre22

Basins are not allowed or?
I just did a little bit work in the Timan-Pechora Basin-Article, in German Wiki I have created this article but under "Timan Petschora Oilfield". You can see production from 2004 to 2011 almost 130 million tons of oil were produced in the article I linked. If I remember correct 1 ton is around ~7.3 barrel. This would mean that 130 million tons of oil are exactly 949 million barrels. So production in this "field/basin"? already cumulated far over 1 billion barrels and production is going on? Greetings from Berlin, Europe :) Kilon22 (talk) 19:14, 18 March 2013 (UTC)

Toot, Pakistan is wrong here
This article is for fields larger than 1 billion reserve. In the table Toot is written 1 billion, but in the article:

''There are about 60 million barrels (9,500,000 m3) of oil in place with 12%-15% of which is recoverable. At its peak during 1986, the field was producing approximately 2,400-barrel (380 m3) of oil per day.''

2,400 Barrels peak is nothing, and 60 million reserves of which 12-15% (15% = 9 million barrels) are recoverable is a joke too. Maximum 9 million barrels... so 991 million are missing to the "1 billion" which is written in the table... Kilon22 (talk) 13:21, 1 April 2014 (UTC)

Tengiz?
Where are the Tengiz numbers are from? .530... 530,000 barrels per day, the links is dead: "The List: Taking Oil Fields Offline". August 2006.

In August 2006 the Production of Tengiz never ever could have been 530,000 barrels per day! It is hard to get information about currenct production for the field, but I found information that Tengizchevroil production is lower than 1 year ago.

''In September 2008, Chevron Corporation announced that the major expansion of Tengiz field was completed and it would boost the production capacity to 540,000 barrels per day (86,000 m3/d). In 2012 Chevron announced the field will see its total daily production increase by 250,000-300,000 barrels, bringing production above 500,000 barrels per day.''

Greetings Kilon22 (talk) 12:06, 16 August 2015 (UTC)

I found in the article one ref from September 25, 2008:

''The completion of the expansion brings Tengizchevroil's daily crude production capacity to 540,000 barrels. The first phase of expansion, accomplished earlier this year, increased daily capacity from approximately 310,000 barrels to 400,000 barrels.''

So maybe production in late September 2008 was 400,000 barrels (oil prices were at record high of ~147,50 US-$ in August/September 2008...). Than price declined and like we can read above Chevron said in 2012 that the field WILL SEE an increase to above 500,000 barrels per day - in the future and not in 2012. Than we have price collapse in 2014...

seems unrealistic that the very expensive production there will be increased at the todays low oil prices since production in the Caspian See deep offshore-fields is very expensive and we have a 6-year low in oil price, the low 6 years ago after the 2008 oil price crash. So the 2008 plans were made at an oil price of 147,50$ (which would be today inflation adjusted even a bit more, maybe 160-165 US-$)

Greetings Kilon22 (talk) 12:21, 16 August 2015 (UTC)

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Wrong Numbers - Ref is... not so good
Hey,

in the List we have some fields with very strange numbers, best Example is the Bolivar Coastal oil field, the article says it was discovered already 99 years ago in 1917, and production started almost immediately, right after World War 2 Venezuela was the second largest producer in the world, with US being the "Saudi Arabia" of today, and the Soviets destroyed everything they could not transport away from Maikop (3rd largest oil source during WW2 and shortly after the war), they also set the Maikop fields on fire... Grozny (back than almost nobody knew the Chechnya capital), however it was Number 2 and same plans were already made (transport things away, destroy what can't be transported and set fire on the oil sources, but this did not happen in Grozny, only a little bit reduced output since some things already were moved east.... Baku was the absolutely most important oil field, one of the worlds largest, but still directly after war the Soviet Union did not produce that much if we see Venezuela being No. 2 for I think 15 years, and than No. 3 for another 10 years... from 1945 to 1960 the worldwide No. 2 producer (Venezuela), in 1961 the Soviet Union became 2nd and Venezuela stayed 3rd largest producer for another 10 years until 1970, in 1971 than Saudi-Arabia kicked out Venezuela from the Top 3...

But today Venezuela is collapsing right now because of the petrodollar shortage... combined with the fact that the PDVSA (state owned oil company) was used as a cow by Chavez until he died... he took Milk away but did not give the cows enough grass (or what cows eat^^) to eat... so exploration and drilling was reduced extreme heavy since most of the income was directly taken by Chavez... But there is written that the 99 years ago discovered Bolivar Coastal oil field, which started production in 1922, making it now 94 years old, produces 2.6 to 3.0 million barrels a day.. that is impossible since whole Venezuelan Oil production is lower than 2.6 - 3.0 million barrels, and since there are other fields operating too, most of these are very heavy oil which has to be sold with a discount, but yea... maybe it peaked at ~2.6 (article about the fields says production is 2.6 million).

The ref tells this, but the ref (http://petroglobalnews.com/2013/10/top-ten-highest-producing-oil-fields/) tells us too that the Ghawar Field is No. 1 with ~5 million barrels a day, which is one of the few correct numbers... but on Number 2 they write that the Oseberg field which was discovered in 1979 and production started in 1988, they write this field produces 3,780,000 b/d ... which is not possible since again that number is far higher than whole Norwegian oil production (even though Norway and Russia made a 50/50 agreement about territories both claim, they collect experience and produce a bit oil and natural gas there... so maybe Oseberg peaked, in the article here there is written that current production is 14,121 m3/d (88,820 bbl/d). 88,820 bpd and 3,780,000 bpd... shows how good the ref is... just wanted to mention this (again?!)... Greetings Kilon22 (talk) 23:33, 5 September 2016 (UTC)

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optic
Hi guys only I have an "optic" error?! There is a picture at a position where it has not been before (maybe because the article has a "warning" that information is/could be old?) or someone changed something, I do not know exactly...

I made some edits in the past, I will check, I updated Cantarrel for example quite often since it is the hardcore version of depletion and "overproduction" at all costs since operating an offshore platform is expensive, so 2.1 million barrels per day were produced in ~2004 (which is far too much for such a field, especially since it is already producing since 1981...

the steadily increasing oil prices up to the Summer 2008 extreme high price made it attractive and they produced more than 50% of mexicos whole oil output from Cantarrel alone in 2004, later all "experts" said it will stabilize at 500k, than 450k, than 400k... and I looked 2 years ago or so and it was already well below 400k and decreasing month by month..... I think it won't stabilize before maybe 200k or 175k... since no investions will be done, Ka-Maloop-Zaap is the new 3-field (very close to each other, thats why its called as one with all 3 names in it), this field produced over 800,000 barrels over 2 years ago and investments will be done there after the OPEC cut (Mexico agreed to a small reduction like Russia, Oman, Azerbaijan and other smaller non-opec producers)

However I try to find new data, Greetings Kilon22 (talk) 22:41, 27 February 2017 (UTC)

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Sverdrup is missing
The Johan Sverdrup oil field should be added to the list. --Hg6996 (talk) 06:44, 10 January 2020 (UTC)