Shaan224 Reservoir Geology and Development

Abstract

In this chapter, the geology and development of the Shaanxi 224 gas reservoir is introduced. The target horizon of the reservoir is the Ma5₁³ dolomite formation and lithologic trap of the Ordovician Majiagou formation. The cap rock is a set of mudstone and silty mudstone, and the floor is argillaceous dolomite and dolomite. Before the construction of the reservoir, the level of production was 65%, and no water was found. The gas reservoir contains acid gases, such as hydrogen sulfide and carbon dioxide, and the reservoir has a low porosity and permeability, which further challenge the goal of low-cost reservoir construction and efficient operation.