Advanced method for predicting the productivity ratio of a perforated well
This study extends and, in most details, corroborates the work of previous investigators in the area of relating productivity ratios to perforations. A more refined model, called the finite-element method, permits a significant advance in the precision of the general solution. The principal findings of this study include (1) corroboration of previous conclusions that perforator penetration is substantially more important than perforation diameter, within practical ranges of values, (2) confirmation that productivity continues to increase with increasing shot density, and (3) an analysis of the effect of angular phasing of successive shots, which, for the first time, compares the phasings used in real perforating guns. This analysis confirms earlier findings that 90/degree/ phasing is the best of those tested (0, 90, 120, and 180/degree/) but produces more meaningful quantitative comparisons than were available before. 10 refs.
- Research Organization:
- Schlumberger-Doll Res, USA
- OSTI ID:
- 6751263
- Journal Information:
- J. Pet. Technol.; (United States), Vol. 33:12
- Country of Publication:
- United States
- Language:
- English
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