Principles of well diagnosis
Well performance analysis provides an effective engineering resource for the analysis of well problems and the benefit possible from well workovers or well stimulation to improve well performance. Transient pressure testing and analysis has long been used to identify formation potential and to disclose wellbore restrictions; however, this methodology does not identify the source of restricted flow or a realistic potential of a well completion change. Well diagnosis not only involves pressure transient testing and analysis, but also well completion procedure analysis, well log analysis, special petrographic analysis, and flowing well system analysis (often called Nodal Analysis). Although reservoir flow and tubular flow are important in this systems analysis, well completion modeling is often the key to improvements through workover or stimulation. Several completion or wellbore models have been developed and presented in the last 20 years. Those models dealing with perforated wells and gravel packed wells will be reviewed and illustrated with case histories that demonstrate how well systems analysis leads to improved well performance. The geology of the formation is often critical in the analysis of formation damage and interpretation of well production problems, especially when flow is not sufficient to allow pressure transient testing. Well completion operation analysis is a developing art which incorporates an understanding of the latest research and a familiarity with field practice, and a strategy for this analysis will be provided.
- OSTI ID:
- 433595
- Report Number(s):
- CONF-940879-; TRN: IM9709%%28
- Resource Relation:
- Conference: Centennial petroleum engineering symposium of the University of Tulsa, Tulsa, OK (United States), 29-31 Aug 1994; Other Information: PBD: 1994; Related Information: Is Part Of University of Tulsa centennial petroleum engineering symposium: Supplemental proceedings; PB: 67 p.
- Country of Publication:
- United States
- Language:
- English
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