Transient, sandface temperature solutions for horizontal wells producing dry gas

A. Dada, K. Muradov, D. Davies

Research output: Contribution to conferencePaper

Abstract

Multiple recent studies have shown that the bottom-hole, transient temperature can be used to estimate formation properties including permeability-thickness and depth of damage, to identify produced phases, as well as to allocate zonal flow rates. The appropriate methods for temperature interpretation are being developed worldwide as part of the Temperature Transient Analysis (TTA) methodology. To-date, most of the TTA solutions have been developed for vertical wells. The TTA for horizontal well is more complex with only few solutions available so far, despite the high demand since the high-precision, downhole temperature sensors are widely installed in horizontal, intelligent wells. Moreover, to our knowledge no TTA solutions are yet available for gas producing horizontal wells. This work fills this gap by presenting analytical and semi-analytical solutions for transient sandface temperature in gas producing horizontal wells. We first present novel, TTA solutions developed for linear flow around a horizontal well with semi-infinite, constant pressure lateral boundaries. Further, the semi-analytical transient sandface temperature solution is also presented. Finally, the effects of heat transfer between the reservoir and the surrounding formation and the effects of flow convergence are considered. These results are an important step in the TTA development and effective use in modern wells.

Original languageEnglish
DOIs
Publication statusPublished - 9 Apr 2018
Event8th Saint Petersburg International Conference and Exhibition: Innovations in Geosciences - Time for Breakthrough - Saint Petersburg, Russian Federation
Duration: 9 Apr 201812 Apr 2018

Conference

Conference8th Saint Petersburg International Conference and Exhibition: Innovations in Geosciences - Time for Breakthrough
CountryRussian Federation
CitySaint Petersburg
Period9/04/1812/04/18

ASJC Scopus subject areas

  • Geophysics
  • Geology
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Dada, A., Muradov, K., & Davies, D. (2018). Transient, sandface temperature solutions for horizontal wells producing dry gas. Paper presented at 8th Saint Petersburg International Conference and Exhibition: Innovations in Geosciences - Time for Breakthrough, Saint Petersburg, Russian Federation. https://doi.org/10.3997/2214-4609.201800323