Naslov
Using of Ordinary Kriging for Indicator Variable Mapping (example of sandstone/marl border)

Autori
Novak Zelenika, Kristina ; Malvić, Tomislav

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, stručni

Izvornik
Abstracts of The 5th Internatonal Oil and Gas conference Is There an Energy Alternative for Oil and Gas in This Century? = Imaju li nafta i plin energetsku yamjenu u ovom stoljeću? / - Zagreb, 2009, 40-41

Skup
Internatonal Oil and Gas conference (5 ; 2009)

Mjesto i datum
Šibenik, Hrvatska, 29.09.2009. - 01.10.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ordinary kriging; indicator variable; sandstone; marl; facies transition

Sažetak
There is plenty of opportunity to work with indicator variable in the petroleum geology. It means that each task where we can define two possible results (binary approach), the most often expressed as 1 (true) and 0 (false), can be finally presented as indicator value. Furthermore, the reservoir facies analysis is just one of such problem that could be very good analyzed with such tool. In the Croatian part of the Pannonian basin system, the majority of reservoirs are presented by sandstones, that gradually have been changed in marls laterally as well as towards the top and the base of the reservoir. The analytical goal in this paper was lateral facies change, i.e. the mapping of contour of permeable reservoir part. We used the well data to define indicator variable presented as 1 for reservoir described by sandstone, and with 0 for the reservoir in dominantly marl type or pure, basinal marl. Hand-counting (very popular in the past) put the facies transition line as the half of distance between 1 and 0 values. But, today’ s approach is obligatory based on the computer mapping. It is why we tried to use advanced technique of Ordinary Kriging to interpolate indicator values, trying to reach approximately ‘ half-distance’ facies line. The successfully results are presented in this paper.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Geologija

POVEZANOST RADA