Donate Bitcoin

Donate Paypal


PeakOil is You

PeakOil is You

A Statistical Model for the Simulation of Oil Production

Discuss research and forecasts regarding hydrocarbon depletion.

Re: A Statistical Model for the Simulation of Oil Production

Unread postby Taskforce_Unity » Sat 15 Oct 2005, 15:21:42

Average field distribution from 100 projects announced to be taken on-stream between the period 2005-2010 (taken from my own report, launch date now set at the end of October due to media-related reasons).


This analysis showed that:

• 23% of the projects were EOR projects
• 12% of the projects were discovered before 1980
• 7% of the projects were discovered between 1980 and 1989
• 29% of the projects were discovered between 1990 and 1999
• 18% of the projects were discovered between 2000 and 2004
• 11% of the projects were unconventional projects (tar sands and orinoco heavy oil)


Some Specific oil projects discovery - on stream time lag

Golfinho

Country: Brazil
Type: offshore
Discovery date: 2003
Reserves: unknown
Production starting date: 1st half 2006
Amount of production: 100.000 b/d
Operator: Petrobras

Constitution

Country: Gulf of Mexico
Type: Offshore
Discovery date: 2002
Reserves: unknown
Production starting date: 2006
Amount of production: 70.000 b/d
Operator: Kerr-Mcgee

Muniteer-Exeter

Country: Australia
Type: offshore
Discovery date: 2003
Reserves: unknown
Production starting date: 2005, full production expected in 2006
Amount of production: 100.000 b/d
Operator: Santos

Luda

Country: China
Type: offshore
Discovery date: 2000-2002
Reserves: unknown
Production starting date: 2005
Amount of production: 40.000 b/d
Operator: ConocoPhilips

Tui

Country: Maui
Type: offshore
Discovery date: 2002-2004
Reserves: 20-30 million barrels
Production starting date: 2006
Amount of production: 30.000 b/d
Operator: Taranaki


As an average distribution we see that newly discovered fields are at the moment coming on-stream on average 4-6 years after they have been discovered. Sometimes this is 3 years and in very special cases 2 years.

The fields coming from the "existing reserve base" or in other words, discoveries made before the year 2000 are rapidly being brought into production due to economic factors (high price of oil) and technological possibilities. Or in other words we are eating the "lower fruit"

Almost all projects coming on-stream are offshore oil projects (except for EOR and Unconventional). This is a serious issue since offshore oil fields rapidly decline on average after 10-15 years of production.
User avatar
Taskforce_Unity
Coal
Coal
 
Posts: 479
Joined: Mon 22 Nov 2004, 04:00:00
Location: Holland

Re: A Statistical Model for the Simulation of Oil Production

Unread postby SilentE » Mon 17 Oct 2005, 14:32:11

Taskforce_Unity wrote:Your assumption is not correct SilentE. At the moment the average life after discovery when an oil field comes on-stream is approximately 4-6 years. Some oil fields come on-stream 2 years after they have been discovered!


Do you mean that only oil fields that entered production in 2005 were on average discovered 4-6 years ago? Or that all oil fields discovered in 2000 will be placed into production within (average) 4-6 years? That is, does that 4-6 year period only apply to the subset of oil fields that are actually put into rapid production, while other fields are deliberately held in reserve for far longer, and thus because they have yet to be produced they are not included in the average?

Any insight into what accounts for the wide range of differencs - is it national, regional, or type (offshore)?
<i>A little glob becomes a globe instantly
If you just add silent e.</i>
-- Tom Lehrer
User avatar
SilentE
Peat
Peat
 
Posts: 56
Joined: Tue 23 Aug 2005, 03:00:00

Re: A Statistical Model for the Simulation of Oil Production

Unread postby Taskforce_Unity » Mon 17 Oct 2005, 15:50:55

SilentE wrote:Do you mean that only oil fields that entered production in 2005 were on average discovered 4-6 years ago?


No

SilentE wrote: Or that all oil fields discovered in 2000 will be placed into production within (average) 4-6 years?


Yes

SilentE wrote:That is, does that 4-6 year period only apply to the subset of oil fields that are actually put into rapid production, while other fields are deliberately held in reserve for far longer, and thus because they have yet to be produced they are not included in the average?


No, because of economical and technological differences and incentinves when compared to the past any oil field discovered at the moment is rapidly being brought into production. Whether it is an old oil field (discovered 30 years ago) or a new oil fields (discovered 5 years ago)

SilentE wrote:Any insight into what accounts for the wide range of differencs - is it national, regional, or type (offshore)?


most oil comin on-stream is offshore nowadays, allmost every on-shore field is already in production to my knowledge (except for a large amount of barren Russian fields, they are also coming into production). This is a worldwide trend (except maybe for the "missing" 130 billion barrels not in production in Saudi Arabia).
User avatar
Taskforce_Unity
Coal
Coal
 
Posts: 479
Joined: Mon 22 Nov 2004, 04:00:00
Location: Holland

Re: A Statistical Model for the Simulation of Oil Production

Unread postby khebab » Mon 17 Oct 2005, 17:03:57

Taskforce_Unity wrote:This analysis showed that:

• 23% of the projects were EOR projects
• 12% of the projects were discovered before 1980
• 7% of the projects were discovered between 1980 and 1989
• 29% of the projects were discovered between 1990 and 1999
• 18% of the projects were discovered between 2000 and 2004
• 11% of the projects were unconventional projects (tar sands and orinoco heavy oil)

Thanks Taskforce for these details!

It gives the following pdf for the lags (excluding unconventional projects):
Code: Select all
Prob(lag <= 5 years)= 0.25
Prob(5 < lag <= 15)= 0.44
Prob(15 < lag <= 25)= 0.11
Prob(lag > 25)= 0.18

This is very different from a uniform density, it looks more like a Gamma law.

question:
1- do you know the percentage of offshore projects?
______________________________________
http://GraphOilogy.blogspot.com
khebab
Tar Sands
Tar Sands
 
Posts: 899
Joined: Mon 27 Sep 2004, 03:00:00
Location: Canada

Re: A Statistical Model for the Simulation of Oil Production

Unread postby WebHubbleTelescope » Mon 17 Oct 2005, 23:45:42

khebab wrote:Thanks Taskforce for these details!

It gives the following pdf for the lags (excluding unconventional projects):
Code: Select all
Prob(lag <= 5 years)= 0.25
Prob(5 < lag <= 15)= 0.44
Prob(15 < lag <= 25)= 0.11
Prob(lag > 25)= 0.18

This is very different from a uniform density, it looks more like a Gamma law.


Which is what I have been saying with my model. I assumed a convolution of three exponential phases, Fallow, Development, and Maturation. This just happens to give a gamma distribution of order 3. Which gives ~ x-cubed * exp -x/3. Drop one of the phases, and it is still a gamma but of order 2.
User avatar
WebHubbleTelescope
Tar Sands
Tar Sands
 
Posts: 950
Joined: Thu 08 Jul 2004, 03:00:00

Re: A Statistical Model for the Simulation of Oil Production

Unread postby Taskforce_Unity » Tue 18 Oct 2005, 03:30:32

khebab wrote:question:
1- do you know the percentage of offshore projects?


Ill look it up later today or tomorrow.

Besides that you should be aware that 90% of all oil fields every discovered were in production in 2003 according to IHS. That means that approximately around 2010 no oil fields will come on-stream anymore from before 2000 (or very little). Given the current rate in which oil-fields are coming on-stream.
User avatar
Taskforce_Unity
Coal
Coal
 
Posts: 479
Joined: Mon 22 Nov 2004, 04:00:00
Location: Holland

Re: A Statistical Model for the Simulation of Oil Production

Unread postby Taskforce_Unity » Sun 23 Oct 2005, 17:44:51

khebab wrote:question:
1- do you know the percentage of offshore projects?


It's not an exact figure but i guesstimate 60% from going through 40 projects and also including unconventional oil and reworking old fields.

WebHubbleTelescope I am looking through your shock oil model. Looks really interesting and it is even so simple that i can understand parts of it :P.

Anyway might be interesting to insert some new variables like reserve increases over time due to technology. Or faster pumping up of oil due to technology whereafter the decline curve is far steeper. Or overproduction...
User avatar
Taskforce_Unity
Coal
Coal
 
Posts: 479
Joined: Mon 22 Nov 2004, 04:00:00
Location: Holland

Re: A Statistical Model for the Simulation of Oil Production

Unread postby WebHubbleTelescope » Wed 11 Jan 2006, 20:21:21

ElijahJones wrote: But then again not everyone is be forthright about their techniques.


I assume you are talking about the legions of analysts working for the oil industry at a salary, sequestered in their office buildings, unable to say a peep about the reality of the situation? And then the paid consultants, told to muddle the arguments when someone comes close to the truth?
User avatar
WebHubbleTelescope
Tar Sands
Tar Sands
 
Posts: 950
Joined: Thu 08 Jul 2004, 03:00:00

Re: A Statistical Model for the Simulation of Oil Production

Unread postby WebHubbleTelescope » Thu 12 Jan 2006, 01:19:51

ElijahJones wrote:I am more than willing to correspond via a-mail with anyone who is interested.


I agree with everything you say, apart from the email thing. I do everything via the blog or message board or something like sourceforge if it involves source code. Email is too secretive for me. If that's the only way somebody wants to communicate, I suppose, but its better to keep everything out in the open.
User avatar
WebHubbleTelescope
Tar Sands
Tar Sands
 
Posts: 950
Joined: Thu 08 Jul 2004, 03:00:00

Previous

Return to Peak oil studies, reports & models

Who is online

Users browsing this forum: No registered users and 14 guests