New technique revives direct deconvolution methods for Wellbore storage removal in pressure transient analysis
Second Author's Department
Petroleum & Energy Engineering Department
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https://doi.org/10.1016/j.ejpe.2021.02.002
Document Type
Research Article
Publication Title
Egyptian Journal of Petroleum
Publication Date
6-1-2021
doi
10.1016/j.ejpe.2021.02.002
Abstract
Eliminating wellbore storage (WBS) effects inherent in pressure transient data is one of the challenges in well test analysis. The available WBS-removal techniques are either direct or time-consuming approaches. The direct methods are mostly unstable and require accurate data with almost no noise. However, well test data often have noise in both rate and pressure measurements. This work discusses the development of a stable technique to overcome the shortcomings in the available WBS-removal methods. The technique presented here takes advantage of the recently developed stable deconvolution algorithms (e.g. von Schroeter algorithm) to achieve a stable WBS-removal process. The developed approach provides longer WBS-free reservoir response signal (extended over the entire test duration) than the previous methods. In addition, the approach introduced here can remove WBS-effects in noisy data and does not require sandface rate measurements. Different simulated and field examples were used to validate the proposed approach. The examples included data with different levels of rate and pressure measurement errors and covered wide variety of well/reservoir models. The available approaches were implemented to the same examples. A comparison of the results shows the superiority of the approach presented in this paper.
First Page
37
Last Page
43
Recommended Citation
APA Citation
Khalaf, M.
El-Banbi, A.
&
Sayyouh, M.
(2021). New technique revives direct deconvolution methods for Wellbore storage removal in pressure transient analysis. Egyptian Journal of Petroleum, 30(2), 37–43.
10.1016/j.ejpe.2021.02.002
https://fount.aucegypt.edu/faculty_journal_articles/2644
MLA Citation
Khalaf, Mina S., et al.
"New technique revives direct deconvolution methods for Wellbore storage removal in pressure transient analysis." Egyptian Journal of Petroleum, vol. 30,no. 2, 2021, pp. 37–43.
https://fount.aucegypt.edu/faculty_journal_articles/2644