Reservoir Characterization of Unconventional Dadaş Formation in Southeastern Turkey

21 th International Petroleum and Natural Gas Congress and Exhibition of Turkey, Ankara, Türkiye, 27 - 29 Eylül 2023, cilt.1, ss.143-144

Unconventional resources are increasingly important

in the future of oil and gas industry as they potentially

hold substantial amount of hydrocarbon. Economical

production from shale reservoirs is still strongly

dependent on reservoir characterization of the

formations that are generally conducted by using

mineralogical content of the rocks and geochemical

properties including total organic carbon content (TOC)

and maturation of the source rocks. However, the

integrated approach by describing, from microscopic

to reservoir scales, the sedimentological, petrophysics,

geomechanical parameters and structural aspects are

also required. The Silurian age Dadaş Shale in the

Diyarbakır basin, SE Anatolian Basin are the most

prospective unconventional reservoir in Turkey.

However, the potential of this unconventional formation

still remained ambiguous. Thus, sedimentological

analysis on cores and cuttings, petrographic analysis

on thin sections and SEM images, well log data

interpretation, natural fracture characterization using

Borehole Imagers (BHI) and cores are conducted to

unlock the potential of Dadaş unconventional reservoir

and results revealed that the Dadaş-I member of the

Dadaş formation has potential of source rock for the

Paleozoic oil system.