Oil and gas exploration of the Majiagou Formation in the Daniudi area, Ordos Basin,
continues to make breakthroughs. Practice has shown that the whole Fifth member of the …

Petrographic paleogeography study is the basis of reservoir delineation and hydrocarbon
exploration. The results of the previous understanding of the petrographic paleogeography …

Based on analysis of sedimentation and lithofacies paleogeography of Ordovician Majiagou
Formation in the central and eastern part of Ordos Basin, this paper, for the first time, defines …

Characteristics and genesis of Ma5 1+ 2 sub-member reservoir (the 1 st and 2 nd sub-
member of the 5 th member of Ordovician Majiagou Formation) in the northeastern Ordos …

This paper analyzes and discussed the diagenetic mechanism for M5? 5sub? member of
Majiagou formation in Ordos basin by geochemistry approaches. The M5? 5sub? member in …

A set of vug-type karst reservoirs is developed below the weathering crust of the Majiagou
formation in the Daniudi gas field of Ordos basin, which are the main reservoirs of the …

The tight carbonate reservoir was controlled by various geological factors, and such factors
played different roles in buried depths and formations. Therefore, studies related to the …

Abstract The Middle Ordovician Majiagou Formation in the northern Ordos Basin consists of
a sequence of subtidal and peritidal carbonates that are extensively dolomitized. The …

Based on rock structure analysis in combination with dolomite degree of order, trace
element, geochemical characteristics of carbon and oxygen isotopes, inclusion temperature …

The Ordovician Ma5 1+ 2 sub-member in Ordos basin is known to be rich in natural gas
resources, which is the key target for oil and gas exploration in Ordovician formation in …