Data: sources
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| Oil Field Production Geology | |
| |
| Series | Memoirs |
|---|---|
| Part | The Geological Scheme |
| Chapter | Sources of Data |
| Author | Mike Shepherd |
| Link | Web page |
| PDF file (requires access) | |
| Store | AAPG Store |
A large amount of data is available to the production geologist for reservoir evaluation. Much of the data will have been expensive to acquire, particularly if obtained from wells offshore. For instance, core taken from a drilling operation on an offshore drilling rig may have cost more than a million dollars to recover. There is an obligation to take good care of the data and to make sure that the information is accessible, either as well-organized paper data files or as data on a computer shared drive. Data files stored on a computer should be labeled with the originator's initials, a date, and some idea of the significance of the data, e.g., "MS August 31, 2008, final top reservoir depth map." Well files should be compiled with all the available data collected on a well-by-well basis. Good data management can make all the difference between a project that is well organized and effective, and one that is disorganized and inefficient.
Obtaining data in an oil field environment is expensive; therefore, it is necessary to justify the economics of gathering the information. In the early stage of field life, the value of information is enormous; the data are essential for reservoir evaluation. Later on in field life, it becomes more important to justify the expense of the data. The new information should be gathered on the basis that it significantly improves the project value and reduces the company's investment risk (Gerhardt and Haldorsen, 1989).
Types of data
A production geologist will use data from a variety of sources. These include:
- mud logging data
- core data
- sedimentology and petrography reports
- outcrop analogs/modern depositional environments
- wireline-log and logging-while-drilling (LWD) data
- production-log data
- well-test data
- fluid samples
- production data
- seismic data
See also
References
External links
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