论文部分内容阅读
埋藏条件下原生孔隙的破坏与保存机制是含油气盆地砂岩储层质量研究的一个核心领域,其在油气地质学研究中的意义不言而喻。与次生孔隙的形成与保存机制相比,影响原生孔隙破坏与保存的因素有着其特殊的复杂性和多样性。在总结国内外研究进展的基础上,试图深入理解不同成岩机制在砂岩储层原生孔隙破坏与保存中的意义和作用,包括破坏机制(如机械压实、胶结作用等)和保存机制(如地层超压、颗粒包膜、盐体侵位和烃类占位等)。目前难以实现砂岩储层质量钻前准确预测的一个困难在于无法明确原生孔隙演化的动力和过程,将来成岩作用、流体作用、沉积过程和盆地演化的更紧密结合可能是解决砂岩储层原生孔隙破坏与保存机制研究中最有希望的发展方向之一。
The destruction and preservation mechanism of primary pores under burial conditions is a core area of the research on the quality of sandstone reservoirs in oil-bearing basins. Its significance in the study of petroleum geology is self-evident. Compared with the formation and preservation mechanism of secondary pores, the factors affecting the destruction and preservation of primary pores have their own special complexity and diversity. On the basis of summarizing the research progress at home and abroad, the author tries to understand deeply the significance and function of different diagenesis mechanisms in the destruction and preservation of primary pores in sandstone reservoirs, including the mechanism of failure (such as mechanical compaction and cementation) and the preservation mechanism Overpressure, particle envelopes, salt emplacement and hydrocarbon occupancy, etc.). One of the difficulties in accurately predicting the quality of sandstone reservoirs at present is that the impetus and process of primary pore evolution can not be identified. In the future, the closer integration of diagenesis, fluid action, depositional processes and basin evolution may be the solution to the primary pore destruction of sandstone reservoirs One of the most promising development directions in the research of preservation mechanism.