GASLOG - Numerical modelling of wireline logs from borehole gas and drilling data

R. Arkalgud*, A. Hurst, S. Cuddy, G. Tischler

*Corresponding author for this work

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

Measurements of gas contained in drilling mud are derived routinely during the drilling of boreholes. Gas data are obtained to identify changes in saturation, particularly when free hydrocarbon gases may be present, and to support safety control measures. Hence, the gas data are a subsurface signature and may be used for predicting lithology, permeability and fluid composition. Because gas data are acquired continuously during drilling, they can potentially be used to derive real-time estimates of subsurface characteristics. Our research investigates this potential and the potential for incorporating real-time drilling data, in the prediction of formation characteristics while drilling. The conventional method of wireline logging in formation evaluation is an expensive, time consuming process in oil and gas exploration. Current research proposes an alternate inexpensive way of formation evaluation, which can be used alongside/instead of conventional methods. The current research focuses on predicting the fundamental elements of formation evaluation such as porosity and permeability using the available gas data and mass spectrometer data. The research has developed synthetic wireline logs in real-time, using advanced mathematical techniques, which can be interpreted analogous to conventional logs for formation evaluation. The validation of current methodology is demonstrated using North Sea test case wells.

Original languageEnglish
Pages3039-3044
Number of pages6
Publication statusPublished - 1 Jun 2006
EventSociety of Petroleum Engineers, 68th European Association of Geoscientists and Engineers Conference and Exhibition, incorporating SPE EUROPEC 2006, EAGE 2006: Opportunities in Mature Areas - Vienna, Austria
Duration: 12 Jun 200615 Jun 2006
https://aer.andornot.com/Record/AERCALG30954 (Link to Details of Conference - Alberta Energy Regulator)
http://www.eage.org/files/vienna_1st_ann.pdf (Call for Papers - PDF Format)

Conference

ConferenceSociety of Petroleum Engineers, 68th European Association of Geoscientists and Engineers Conference and Exhibition, incorporating SPE EUROPEC 2006, EAGE 2006: Opportunities in Mature Areas
CountryAustria
CityVienna
Period12/06/0615/06/06
Internet address

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