Journal of Applied Mathematics

Reservoir Characterization during Underbalanced Drilling of Horizontal Wells Based on Real-Time Data Monitoring

Gao Li, Hongtao Li, Yingfeng Meng, Na Wei, Chaoyang Xu, Li Zhu, and Haibo Tang

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Abstract

In this work, a methodology for characterizing reservoir pore pressure and permeability during underbalanced drilling of horizontal wells was presented. The methodology utilizes a transient multiphase wellbore flow model that is extended with a transient well influx analytical model during underbalanced drilling of horizontal wells. The effects of the density behavior of drilling fluid and wellbore heat transfer are considered in our wellbore flow model. Based on Kneissl’s methodology, an improved method with a different testing procedure was used to estimate the reservoir pore pressure by introducing fluctuations in the bottom hole pressure. To acquire timely basic data for reservoir characterization, a dedicated fully automated control real-time data monitoring system was established. The methodology is applied to a realistic case, and the results indicate that the estimated reservoir pore pressure and permeability fit well to the truth values from well test after drilling. The results also show that the real-time data monitoring system is operational and can provide accurate and complete data set in real time for reservoir characterization. The methodology can handle reservoir characterization during underbalanced drilling of horizontal wells.

Article information

Source
J. Appl. Math., Volume 2014 (2014), Article ID 905079, 19 pages.

Dates
First available in Project Euclid: 2 March 2015

Permanent link to this document
https://projecteuclid.org/euclid.jam/1425305976

Digital Object Identifier
doi:10.1155/2014/905079

Citation

Li, Gao; Li, Hongtao; Meng, Yingfeng; Wei, Na; Xu, Chaoyang; Zhu, Li; Tang, Haibo. Reservoir Characterization during Underbalanced Drilling of Horizontal Wells Based on Real-Time Data Monitoring. J. Appl. Math. 2014 (2014), Article ID 905079, 19 pages. doi:10.1155/2014/905079. https://projecteuclid.org/euclid.jam/1425305976


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