Application of the extended dynamic material balance method to a super giant carbonate oilfield

Ultay Istayeva, Gregory King

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we discuss the use of the dynamic material balance (DMB) method to a super-giant carbonate oilfield. The principal advantage of the DMB method, in contrast to the conventional material balance (CMB) methods, is that well shut-ins are not required for the application of the DMB method. While the fundamental assumptions of material balance are still applicable, we extend the DMB method described in the literature in several important ways. These extensions include: • The use of pressure dependent oil formation volume factor (FVF), Bo, including a pressure dependent oil compressibility, co • The use of pressure dependent (net effective confining stress) formation compressibility, cf • The use of a revised method for estimation of the original-oil-in-place, OOIP Due to the significance of a super-giant oilfield to the operator's portfolio, well shut-ins are routinely performed in the field and stabilized, static shut-in pressures, though not required for the application of the DMB, are commonly collected. Consequently, we are in a position to compare the results of the DMB predicted pressures to field measured pressures. In general, these comparisons are very favorable, and they will be presented and discussed in the paper. In addition to the use of the DMB for original-oil-in-place (OOIP) estimates, we have observed that trends in the DMB plots can be used to diagnose pre-/post-workover performance. Therefore, we can use the DMB method to determine the success/failure of well interventions for improving the well productivity and for adding connected in-place oil to the wellbore. Our experience with this application of DMB will also be discussed in the paper. Finally, we use this paper as a case study for the application of the DMB method to a producing oilfield.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - SPE Annual Caspian Technical Conference and Exhibition
PublisherSociety of Petroleum Engineers
ISBN (Electronic)9781613993545
StatePublished - Jan 1 2014
EventSPE Annual Caspian Technical Conference and Exhibition - Astana, Kazakhstan
Duration: Nov 12 2014Nov 14 2014

Publication series

NameSociety of Petroleum Engineers - SPE Annual Caspian Technical Conference and Exhibition

Other

OtherSPE Annual Caspian Technical Conference and Exhibition
CountryKazakhstan
CityAstana
Period11/12/1411/14/14

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Istayeva, U., & King, G. (2014). Application of the extended dynamic material balance method to a super giant carbonate oilfield. In Society of Petroleum Engineers - SPE Annual Caspian Technical Conference and Exhibition (Society of Petroleum Engineers - SPE Annual Caspian Technical Conference and Exhibition). Society of Petroleum Engineers.