地表-早成岩A期主要是大气淡水，早成岩B期-中成岩A期主要是配套烃源岩

The surface-early diagenetic stage A is mainly atmospheric fresh water, the early diagenetic stage B-middle diagenetic stage A is mainly due to the thermal evolution of kerogen in the supporting source rocks to generate organic acid and CO2 and other acidic fluids, and the middle diagenetic stage B-late diagenetic stage is mainly composed of organic acids and CO2. Acidic fluids such as CO2 and organic acids generated by high-temperature water oxidation of hydrocarbons in oil and gas reservoirs. The second is the relay in the process of feldspar dissolution and pore formation. The large-scale feldspar secondary pores in deep reservoirs are both formed by medium/shallow dissolution and preserved in the deep layer, and directly formed by dissolution in the deep layer. superimposed. The third is the relay of feldspar dissolution path and porosity-enhancing-porosity-preserving effect.

Surface early diagenetic stage a is mainly atmospheric fresh water, early diagenetic stage B - medium diagenetic stage a is mainly the thermal evolution of kerogen in supporting source rocks to generate organic acid and CO2 and other acidic fluids, and medium diagenetic stage B - late diagenetic stage is mainly the CO2 and organic acid and other acidic fluids generated by the oxidation of hydrocarbon high-temperature water in oil and gas reservoirs. The second is the relay of feldspar dissolution pore forming process. The large-scale feldspar secondary pores in the deep reservoir are not only preserved to the deep layer after the formation of medium / shallow dissolution, but also directly formed in the deep layer. They are the superposition of the relay dissolution transformation of feldspar minerals by acid fluids of different stages and sources. The third is the relay of feldspar dissolution path and pore increasing pore retaining effect.

Surface-early diagenesis stage A is mainly atmospheric fresh water, early diagenesis stage B-middle diagenesis stage A is mainly acidic fluid such as organic acid and CO2 generated by thermal evolution of kerogen in matching source rocks, and middle diagenesis stage B-late diagenesis stage is mainly acidic fluid such as CO2 and organic acid generated by oxidation of hydrocarbons in oil and gas reservoirs by high-temperature water. The second is the relay of feldspar dissolution pore-forming process. Large-scale feldspar secondary pores in deep reservoirs are not only preserved to the deep layer after the formation of middle/shallow layer corrosion, but also directly formed in the deep layer corrosion, which is the superposition of relay corrosion transformation of feldspar minerals by acid fluids of different stages and sources. The third is the relay of feldspar dissolution path and pore-increasing-pore-retaining effect.