Using geomechanics to optimize field development strategy of deep gas reservoirs in Saudi Arabia

Mahbub S. Ahmed, Thomas Finkbeiner, Adnan A. Kannan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Saudi Aramco has embarked on drilling long horizontals and maximum reservoir contact (MRC) wells in the deep gas reservoirs. Regional stress field is playing an important role in predicting wellbore stability and future production performance of these wells. To successfully drill and produce these long horizontal wells a detailed geomechanics study and its results needed to be incorporated in the decision tree. Reservoir Management was keen to find the optimum azimuthal direction to place horizontal wells, which will minimize the risk of hole breakouts, optimize drilling mud weights, and ensure sustainable production under depletion mode. A study was undertaken to study the effect of geomechanics on drilling and production of these gas wells. Drilling and production histories along with laboratory measurements were incorporated in the study. The study concluded that horizontal wells should be drilled parallel to the locally derived maximum principal stress (SHmax) azimuth to maximize borehole stability and minimize required mud weights during drilling and production. To date a substantial number of wells have been drilled in the field following the recommended drilling direction that would ensure minimum damage to the reservoir and well's productivity. The objective of the paper is to illustrate methodologies employed to find the optimum drilling direction causing the least damage to the reservoir and discuss implementation of its findings in the field development.

Original languageEnglish (US)
Title of host publicationInternational Petroleum Technology Conference 2007, IPTC 2007
PublisherSociety of Petroleum Engineers
Pages2050-2056
Number of pages7
ISBN (Print)9781615673360
DOIs
StatePublished - Jan 1 2007
EventInternational Petroleum Technology Conference 2007, IPTC 2007 - Dubai, United Arab Emirates
Duration: Dec 4 2007Dec 6 2007

Publication series

NameInternational Petroleum Technology Conference 2007, IPTC 2007
Volume3

Other

OtherInternational Petroleum Technology Conference 2007, IPTC 2007
CountryUnited Arab Emirates
CityDubai
Period12/4/0712/6/07

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology

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