Term
| reservoir engineering encompasses what branches |
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Definition
| environmental, geothermal, and petroleum |
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Term
| the reduction of well spacing, remain in the same section of the reservoir (not drilling a different part of the reservoir) |
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Definition
| infill drilling (reservoir exploitation) |
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Term
| 5 requirements of a reservoir. (if you don't have 1 of these, you don't have a reservoir) |
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Definition
1. source (typically organic rich shales)
2. Trap or Seal
3. Migration Pathway
4. Storage Capacity (must be porous)
5. Transmissivity (must be permeable, able to flow) |
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Term
| why does oil volume shrink as it is brought from the reservoir to surface? |
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Definition
| gas evolves as the pressure is lowered |
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Term
| why does gas volume expand? |
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Definition
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Term
| why does gas volume contract |
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Definition
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Term
| when would you want to use a dissolved (or solution) gas drive? |
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Definition
| when you have an oil that is "undersaturated" gas. Initially no free gas is present (volatile and black oils) |
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Term
they are on the stock market.
does not include private companies |
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Definition
| publicly traded companies (they HAVE to report to the SEC) |
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Term
| what do companies have to report to the SEC |
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Definition
Proved net reserves
economic forecast using existing costs and product prices |
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Term
| "much more likely to be achieved than not" |
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Definition
| "reasonable certainty" (proved reserves) |
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Term
| "reasonable certainty," economic under existing conditions, supported by actual tests and production |
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Definition
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Term
| a significant investment is required. Reasonably certain that the locations will be developed. |
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Definition
| undeveloped proved reserves |
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Term
| There are fish in the lake. You may have caught some yesterday. You may have even be able to see them. But you have not caught any today. |
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Definition
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Term
| There is water in the lake. Someone may have told you there are fish in the lake. You have the boat on the trailer. But you might go pay golf instead. |
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Definition
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Term
-Usually early in the reservoir life.
-Good estimates require a lot of work.
-Evaluated as "similar to" another reservoir.
-Monte Carlo statistical simulation |
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Definition
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Term
-Requires reasonably accurate pressure, PVT, and production data.
-pressure needs to be an appropriate "average" for entire reservoir |
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Definition
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Term
can be done throughout the life of the reservoir to find additional areas that may not be draining to the production wells.
-requires considerably more computational effort |
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Definition
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Term
| requires the least amount of information to tell you something about the reservoir |
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Definition
| "type curves" (Decline Curve Analysis) |
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Term
| Just says that the production rate will/won't continue @ the #s used to create the curve |
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Definition
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Term
| uses the most ubiquitous data that you have available to you |
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Definition
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