成岩作用对储集层物性贡献比率研究

提出定量化表示储集层成岩作用的4项参数(视抗压强度、视填隙率、杂基充填率和视胶结率)，将孔隙度作为成岩作用的综合评价参数，认为孔隙度与视抗压强度和视填隙率线性相关，定义了视抗压强度、视填隙率对储集层物性贡献率及贡献比率。以准噶尔盆地东部彩南油田为应用实例，通过对岩心薄片资料的研究，经过多元逐步回归分析建立了成岩作用与储集层物性之间的关系式(复相关系数达0．9904)，确定对于该区储集层，压实作用造成的孔隙损失比例是非压实作用的1．8倍。

Effects of diagenesis on reservoir property and auality, a case study of the Cainan Oilfield in east of Zhun Ga'er Basin

A case study of the Cainan Oilfield in the east Zhun Ga'er Basin, Northwest China, establishes a relationship between diagenesis and reservoir property. Four parameters (apparent compaction, caulking ratio, matrix ratio, and degree of cementation) are quantified to measure diagenesis. Being a direct measure of reservoir quality and a composite indicator of diagenesis, porosity is linearly related to apparent compaction and caulking ratio. In the case of the Cainan Oilfield, it is estimated that porosity loss due to compaction is 1.8 times of all other diagenetic porosity losses combined.