In practice today, pressure transient analysis (PTA) and production data analysis (PDA)
are done separately and differently by different interpreters in different companies using
different analysis techniques, different interpreter-dependent inputs, on pressure and
production rate data from the same well, with different software packages. This has led
to different analyses outputs and characterizations of the same reservoir. To avoid
inconsistent results from different interpretations, this study presents a new way to
integrate PTA and PDA on a single diagnostic plot to account for and see the early time
and mid-time responses (from the transient tests) and late time (boundary affected/PSS)
responses achievable with production analysis, on the same plot; thereby unifying short
and long-term analyses and improving the reservoir characterization. The rate
normalized pressure (RNP) technique was combined with conventional pressure buildup
PTA technique. Data processing algorithms were formulated to improve plot
presentation and a stepwise analysis procedure is presented to apply the new technique.
The new technique is simple to use and the same conventional interpretation techniques
as PTA apply. We have applied the technique to a simulated well case and two field cases. Finally, this new technique represents improvements over previous PDA methods
and can help give a long term dynamic description of the well’s drainage area.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-3220 |
| Date | 15 May 2009 |
| Creators | Okunola, Damola Sulaiman |
| Contributors | Ehlig-Economides, Christine |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | electronic, application/pdf, born digital |
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