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Peakoil.com :: View topic - Iran's Depletion Curve
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Iran's Depletion Curve
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pup55
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PostPosted: Tue May 03, 2005 12:30 pm    Post subject: Iran's Depletion Curve Add User to Ignore List Reply with quote

Iran News Report from OGJ

This report appeared earlier today in the news section.

In it, there is an estimated depletion curve by this character:

Fesharaki Bio

who is an ex-pat Iranian oil guy.

Quote:
Iran is losing 350,000 b/d/year of oil production capacity, Fesharaki said, and the decline rate could increase to 500,000 b/d/year by the end of the decade.


Based on current production of 3.8 mbo/d, and assuming the depletion gets worse linearly, the depletion curve looks like this:

Quote:
gby
1965 0.696
1966 0.778
1967 0.950
1968 1.037
1969 1.232
1970 1.404
1971 1.669
1972 1.847
1973 2.156
1974 2.212
1975 1.966
1976 2.160
1977 2.086
1978 1.935
1979 1.174
1980 0.540
1981 0.482
1982 0.875
1983 0.896
1984 0.746
1985 0.805
1986 0.750
1987 0.855
1988 0.858
1989 1.056
1990 1.194
1991 1.277
1992 1.286
1993 1.355
1994 1.361
1995 1.366
1996 1.372
1997 1.378
1998 1.407
1999 1.315
2000 1.394
2001 1.363
2002 1.248
2003 1.406
2004 1.420
2005 1.292
2006 1.155
2007 1.009
2008 0.854
2009 0.690
2010 0.517


Frankly, this seems like kind of an extreme dropoff, so there is some question as to the reliability of the estimate, but if true, the notion that these poor guys will be down to a trickle in five years is pretty significant.

The government is not in agreement:

Code:
Iran's fourth 5-year plan, covering the period ending Mar. 20, 2009, calls for an increase in production capacity to 5.4 million b/d through measures that include injection of 5 bcfd of South Pars gas by the end of the period. To reach that level of oil production, Iran must add 1.5-1.6 million b/d of capacity to compensate for declines plus 1.4 million b/d more.


Some comment from Bakhtiari might be in order.
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Shiraz
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PostPosted: Tue May 03, 2005 1:34 pm    Post subject: Add User to Ignore List Reply with quote

I believe he is refering to depletion of existing wells, factoring out new production.

The numbers are alarming, but not near as alarming as it would appear from your chart, which assumes the depletion percentage given is net.

For example, you remember when ExxonMobil speaks of depletion of existing production of 4-6% per year for world production? Well, in this context, increasing from 7 to 8 percent for onshore wells in Iran is surprising. It is perhaps a high estimate. I agree, it would be interesting to hear what Mr Bakhtiari has to say on the matter.
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pup55
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PostPosted: Wed Aug 03, 2005 7:54 am    Post subject: Add User to Ignore List Reply with quote

http://theoildrum.blogspot.com/

Per this morning's news via the front page of PO.com: Iran's depletion rate is 400Kb/d/y.
This is about 9.5% of their total production, of 4125 mbd
Iran's internal consumption of oil grew 5% last year, according to the BP review.

Maybe someone more authoritative than the blogspot can update us with better figures, however, at this rate of internal consumption, Iran will become a net importer of oil within 5 years.

here are the updated production, consumption and export curves:

Code:
Year   Prod   Cons   Export
1965   1908   201   1707
1966   2132   222   1910
1967   2603   246   2357
1968   2840   271   2569
1969   3376   300   3076
1970   3848   331   3517
1971   4572   366   4207
1972   5059   403   4656
1973   5907   473   5435
1974   6060   503   5557
1975   5387   571   4816
1976   5918   599   5319
1977   5714   638   5076
1978   5302   646   4656
1979   3218   692   2526
1980   1479   625   854
1981   1321   570   751
1982   2397   619   1777
1983   2454   748   1706
1984   2043   812   1231
1985   2205   893   1312
1986   2054   863   1191
1987   2342   891   1452
1988   2349   774   1576
1989   2894   882   2013
1990   3270   951   2320
1991   3500   995   2504
1992   3523   1017   2506
1993   3712   1044   2668
1994   3730   1099   2631
1995   3744   1204   2539
1996   3759   1248   2511
1997   3776   1221   2556
1998   3855   1160   2695
1999   3603   1192   2411
2000   3818   1271   2547
2001   3734   1277   2457
2002   3420   1385   2035
2003   3852   1472   2380
2004   4176   1551   2625
2005   3779   1629   2151
2006   3420   1710   1710
2007   3095   1795   1300
2008   2801   1885   916
2009   2535   1980   556
2010   2294   2078   216
2011   2076   2182   -106
2012   1879   2292   -412
2013   1701   2406   -706
2014   1539   2526   -987
2015   1393   2653   -1260
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Taskforce_Unity
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PostPosted: Wed Aug 03, 2005 8:54 am    Post subject: Add User to Ignore List Reply with quote

Confirming through BP and EIA numbers, decline less rapid because of new production from Azedagan and Bangestan



Production (million barrels per day)

2005 3.755
2006 3.454
2007 3.228
2008 3.070
2009 2.974
2010 2.936


The EIA Country Analysis:

“Iran's existing oilfields have a natural decline rate estimated at 8-13 percent per year (300,000-500,000 bbl/d) and are in need of upgrading, modernization, and enhanced oil recovery efforts (i.e., gas reinjection).”


Decline assumption in the model:

Decline of 8% assumed for the period of 2005-2010


Production increases in the model (Based on EIA country analysis):

Azadegan production increase of 50.000 added in 2007
Azadegan production increase of 100.000 added in 2008
Azadegan production increase of 100.000 added in 2009
Bangestan production increase of 50.000 added in 2009
Bangestan production increase of 200.000 added in 2010
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PostPosted: Wed Aug 03, 2005 12:28 pm    Post subject: FLAG Add User to Ignore List Reply with quote

FLAG: "Some comment from Bakhtiari might be in order." 5exclaim
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khebab
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PostPosted: Sun Aug 07, 2005 6:17 am    Post subject: Add User to Ignore List Reply with quote

Quote:
“Iran's existing oilfields have a natural decline rate estimated at 8-13 percent per year (300,000-500,000 bbl/d) and are in need of upgrading, modernization, and enhanced oil recovery efforts (i.e., gas reinjection).”

So they are not in terminal decline, they have not used EOR yet!
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JohnDenver
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PostPosted: Sun Aug 07, 2005 7:19 am    Post subject: Add User to Ignore List Reply with quote

Some more material from the EIA Country Analysis Brief:

Quote:
With sufficient investment, it is widely believed that Iran could increase its crude oil production capacity significantly. Iran produced 6 million bbl/d of crude oil in 1974, but has not surpassed 3.9 million bbl/d on an annual basis since the 1978/79 Iranian revolution. During the 1980s, it is believed that Iran may have maintained production levels at some older fields only by using methods that have permanently damaged the fields. Despite these problems, Iran has ambitious plans to increase national oil production - to 4.5 million bbl/d by the end of 2005, more than 5 million bbl/d by 2009, and 7 million bbl/d by 2024. The country is counting on billions of dollars in foreign investment to accomplish this, but this is unlikely to be achieved without a significant change in policy to attract such investment (and possibly a change in relations with the West).


The following bit is really amazing:

Quote:
To the contrary, in January 2005, the Majlis decided to freeze domestic prices for gasoline and other fuels at 2003 levels. Currently, gasoline costs less than 40 cents per gallon in Iran, far below market cost.
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pup55
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PostPosted: Tue Apr 03, 2007 9:25 am    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Update from Safehaven via LATOC:

Iran Exports

Daily production is coming in at 3.9 according to the above article.

The decline is not as gloomy as the original 2005 article, luckily, which suggested that 400-500 thousand barrel per day decline might be in order.

Bakhtiari now feels that the global peak has occurred.
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PostPosted: Tue Apr 03, 2007 10:03 am    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Petrologistics stated last Wednesday that OPEC supply will be down about 200,000 bpd in April, mostly due to Saudi Arabia and Iran. This suggests that Iran is having trouble keeping production even at prior OPEC quota levels.
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pea-jay
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PostPosted: Fri Apr 06, 2007 12:31 am    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Both Iran and Iraq's curves are not really reflective of geological factors. Politcs and war drove those totals, so unlike other areas I think both countries could offer more, again assuming the non-geological constraints are removed.
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rockdoc123
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PostPosted: Mon Apr 09, 2007 9:39 am    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Been away for awhile but thought I would point those interested in Iran production/reserves to a very recent paper:

Al-Husseini, M.I., 2007, Iran's crude oil reserves and production, GeoArabia, Vol. 12, #2, pp. 69-94.

this is an outstanding piece of research that puts together reserves and production numbers on a field by field basis for all of the Iranian production.

A few quotes:

Quote:
In contrast to 1974 when Iran's production peaked at 6.0 MB/d, production in 2005 averaged about 4.1 Mb/d. The 1974 peak occurred when production from most of the giant fields was ramped-up to very high but unsustainable levels. Current plans are to increase the crude oil production rate to 4.6 Mb/d by 2009. This is a significant challenge because this production capacity has to offset a reported total annual decline rate of 300 - 500,000 barrel/day. This high decline rate is attributed to the maturity of the giant fields, many of which attained their peaks in the 1970's and have produced about half or more of their estimated ultimate recoverable reserves. Therefore to achieve the 2009 production target within the next three years, Iran has to add about 680 Kb/d of capacity per year from its developed fields (infill drilling, recompletions, enhanced and improved oil recovery), while also adding net new surface facilities and well capacity from undeveloped fields and reservoirs.


Quote:
About half of Iran's production comes from four mature sueprgiant fields that have depleted about half of their ultimate recoverable reserves. They contain 25% of Iran's initial-oil-in-place and collectively peaked in 1974 when they were producing 3.9 MB/d (versus abou 2.1 MB/d in 2005). The decline from 3.9 to 2.1 Mb/d corrresponds to ra rate of 2% per year on average.


One of the charts shown in the paper indicates that as compared to 4.1 MB/d production at the end 2005, planned expansions and reserve growth will account for 5.5 MB/d production by 2010. The source for this information is noted to be MEES, February, 2006 and OPEC website.

Unfortunately I cannot provide a link to the paper as it is a subscription magazine. However, if you have access to a local University library they will be able to get a copy for you. The paper is very well written giving a balanced reporting of the information that is currently available with regards to production and reserves. It notes descrepencies between official and independant reserve numbers but avoids making claims as to which is correct. Well worth having in your "Peak Oil Library".
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pup55
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PostPosted: Mon Apr 09, 2007 4:25 pm    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Thanks for this post, Rockdoc.

I guess based on this, there is some hope that they will be able to contribute another million barrels per day at some point.

Did the writer suggest how long they could maintain the 5.5 mbpd?

Anyway, this is quite helpful in understanding the remaining reserves issue.
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PostPosted: Mon Apr 09, 2007 4:52 pm    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

I think the writer (who has Campbell as a colleague) is a bit sceptical of the numbers MEES offers up. For a number of the fields they suggest that production can be maintained via reserve growth. I will look in more detail at all of the numbers as I get a chance. Recovery factors are currently all over the place with various zones in fields such as Azadegan ranging from 12.3% (Gurpi Fm) to 28.2% (Gadvan Fm) with the majority of reserves in the 18% recovery range (Sarvak Fm). Also there seems to be a wide range in current recovery factors in similar lithologies. As an example the Asmari limestone in Ahwaz has 64.2% recovery whereas the Asmari at Agha Jari only has 15% recovery.
This is one paper that brings together all the data though. It should be possible to get some sense of what potential reserve growth might be reasonable for the various pools on a strictly statistical basis (take the range in recoveries for a given reservoir across all of the fields and fit a lognormal distribution to it). From that one might be able to come up with a probablistic approach to what production numbers might be in the future. I'll have a go when I get some free time.
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pup55
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PostPosted: Mon Apr 09, 2007 7:01 pm    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Quote:
12.3%


Ay Caramba! I think this is close to the hydrocarbon percent in the
Athabasca oil sands. They'd almost be better off trying to mine it.

We forum dwellers will wait to hear from you.
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rockdoc123
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PostPosted: Mon Apr 09, 2007 8:04 pm    Post subject: Re: Iran's Depletion Curve Add User to Ignore List Reply with quote

Quote:
Ay Caramba! I think this is close to the hydrocarbon percent in the
Athabasca oil sands. They'd almost be better off trying to mine it.

We forum dwellers will wait to hear from you.


Ahhh,...patience grasshopper, the low recovery may only mean they haven't bothered to hit that particular zone with secondary recovery. This is what I need to see if I can sort out with a bit of data mining. Luckily Al-Husseni has put together the data which should make it fairly straight forward.
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