Ordos Basin contains enormous natural gas resources in its lower Paleozoic reservoirs.However,the origin and potential source of the gases are still unclear.
Brittleness index is a most important parameter for hydraulic fracturing and production prediction in the exploration and exploitation of shale gas reservoirs.
The Upper Ordovician is marked by two major global δ13C excursions,the older one is referred to as the Guttenberg carbon isotope excursion(GICE)and the younger one is known as the Hirnantian carbon is
According to the characteristic of lithology,structure,deposition,logging and well completion data,combining with the core observation,we built the geological model of XinChang X5 layer.
Study sample peridotite happened very strong serpentinization,main alteration products as the serpentine,also forming carbonate minerals occurring carbonatization in the late.Serpentinization peridoti
Petroleum inclusions are the intact and original gas and oil samples trapped in minerals in the process of geological evolution of basins containing oil and gas(Liu et al.,2003).