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LEADERS Physics - Chapter 4.4
Chapter 4.4 Natural Gas Resources and Reserves
29
Physics
Graduate
06/26/2010

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Term
How long does the formation of natural gas take?
Definition
thousands possibly millinos of years
Term
What were the natural gas price spikes in 1970s and 2000 indications of?
Definition
that we are running out of natural gas which is estimated to still be in the gorund
Term
What is unconventiaonal gas?
Definition
Unconventional gas does not exist in these conventional reservoirs and it takes another form or is present in a peculiar formation that makes the extraction different from conventional resources
Term
What does the total natural gas resource base include?
Definition
the entire volume of natural gas contained and trapped in the earth, before any is extracted and produced (includes estimations of ALL of the natural gas that is, or was trapped in the earth); a lot of it is non-recoverable
Term
What are recoverable resources?
Definition
the subset of the total resource base that is thought to be technically recoverable
Term
How are recoverable resources divided?
Definition
discovered and undiscovered recoverable resources
Term
What are discovered recoverable resources?
Definition
Those in known locations and they include current production, all past production, as well as the gas that is remaining to be produced
Term
What are undiscovered resources?
Definition
those deposits that have not been pinpointed, but are generally expected to exist based on geologic conditions
Term
Can reservoir locations have both economically recoverable and economically unrecoverable resources?
Definition
Yes
Term
What are the two main categories of reserves?
Definition
Proved reserves and other reserves
Term
What are proved reserves in natural gas?
Definition
with "reasonable certainty" that they can be recovered today or in near future with current technology and $; 90% probability that the natural gas recovered from those reserves will exceed the amount that is estimated beforehand to be recoverable
Term
What are producing proved reserves?
Definition
those reservoirs that are currently being produced
Term
How are proved non-producing reserves broken down?
Definition
1. Proved undeveloped reserves
2. Proved developed non-producing reserves
Term
What are proved undeveloped reserves?
Definition
those where no well has been drilled, but for which there is still relatively certainty surrounding the amount of natural gas they contain
Term
How much technically recoverable natural gas is in the US?
Definition
1,747 Tcf = trillion cubic feet OR
1.7 x 10e12 cubic feet
Term
What is included in the 1.7 x 10e12 cubic feet of technically recoverable natural gas in the US?
Definition
undiscovered, unproved and unconventional natural gas; proved reserves makes up a very small proportion of the total recoverable natural gas resources in the US
Term
Out of 1.7 x 10e12 cubic feet of total natural gas resources in the US, how much of it is UNproved?
Definition
1.4 x 10e12 (80% of resource estimates are unproved)
Term
What happened with US proved natural gas resources?
Definition
decreased
Term
How much potential natural gas resources are in the US (probable resources, possible resources, and speculative resources)
Definition
1.8 x 10 e 12 cubic feet
Term
What is happening with the proved natural gas reserves in the US?
Definition
Not a whole lot is changing
Term
What will happen if the additions to proved reserves in a given year are larger than the subtractions production?
Definition
Then proved reserves will increase and vice versa
Term
Which 3 states have the most natural gas proved reserves?
Definition
Texas, Wyoming, New Mexico
Term
What are the world proved natural gas reserves?
Definition
estimates world proved
natural gas reserves to be around 6,254 Tcf
Term
Where is most of the world natural gas reserves?
Definition
Most of the reserves are located in the Middle East with 2,549 Tcf or
41% of the world total
Term
Europe and USSR natural gas reserves
Definition
And Europe and the Former U.S.S.R. have 2,020 Tcf or 32% of total
world reserves
Term
What are the top 5 countries in natural gas reserves?
Definition
Middle East
Eurasia
Afria
Asia
North America
Term
How much natural gas does the Middle East have?
Definition
2,549 trillion cubic feet
Term
What's going on with natural gas in western europe?
Definition
Post peak
Term
Which 3 countries have the most natural gas reserves?
Definition
1. Iran
2. Qatar
3. Russia
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