Open AccessPhysical threshold of high quality reservoir of Upper Paleozoic in Daniudi gas field, Ordos Basin
Author(s) -
Ningning Xu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/804/2/022034
Subject(s) - natural gas field , porosity , physical property , permeability (electromagnetism) , structural basin , petroleum engineering , geology , paleozoic , petrology , oil field , geomorphology , natural gas , geotechnical engineering , geochemistry , materials science , chemistry , biochemistry , organic chemistry , membrane , composite material
Combined with the gas content and physical property data of the reservoirs, physical threshold of the Upper Paleozoic high quality reservoirs in Daniudi gas field, Ordos Basin is defined through the definition of effective reservoirs, using the method of oil test and distribution function. The results show that the threshold of porosity and permeability is 8% and 0.6×10 −3 μm 2 , respectively. The distribution function method shows that the physical threshold of the low-producing reservoir (with a daily gas production of more than 5 000 m 3 ) is 8∼9% porosity and 0.6∼0.8×10 −3 μm 2 permeability. Based on comprehensive analysis, porosity of 8% and permeability of 0.6×10 −3 μm 2 are set as the physical threshold of high quality reservoir.