Tracking interwell water saturation in pattern flood pilots in a giant gulf oil field

Zahid Bhatti*, Yousof Al Mansoori, Saber El Sembawy, Volker Vahrenkamp, Michael Wilt, Stacy Reeder

*Corresponding author for this work

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

6 Scopus citations

Abstract

Peripheral water flooding has been the preferred pressure maintenance tool for many gulf carbonate reservoirs over the past 30 years. Due to uneven sweep and pressure distribution, this technique has given way to pattern floods in several gulf fields. As these new floods are established, it is important to understand the water saturation between wells to properly manage the sweep and recovery. In 2007, ADCO initiated water injection (WI) and WAG pilots to test the recovery strategy. The pilot employs advanced geophysical and modeling tools to measure formation properties at the wells and between wells; this paper discusses the WI pilot. Among the novel techniques applied is the crosswell electromagnetic method, which measures the interwell resistivity distribution between observation wells at the pilots. Interwell resistivity data can be used to infer the water saturation distribution because of the sharply different electrical resistivity between injected water and oil bearing reservoir rock. By allowing an evaluation of the water distribution long before the injected fronts reach producers or observers, a better and more rapid understanding of the pilot arises from the crosswell electromagnetic technique. In this paper, we briefly describe the pilot design, describe the detailed geological model and show results from the initial set of baseline and time lapse EM data sets from the water injection pilot. The images highlight the influence of background geological constraints on the flow.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - 13th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2008
Pages1824-1834
Number of pages11
StatePublished - Dec 1 2008
Event13th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2008 - Abu Dhabi, United Arab Emirates
Duration: Nov 3 2008Nov 6 2008

Publication series

NameSociety of Petroleum Engineers - 13th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2008
Volume3

Other

Other13th Abu Dhabi International Petroleum Exhibition and Conference, ADIPEC 2008
CountryUnited Arab Emirates
CityAbu Dhabi
Period11/3/0811/6/08

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

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