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深入分析莺歌海盆地东方区中深层黄流组高温、高压储层特征及物性影响因素,对于进一步寻找有利储层及后期气藏的高效开发具有重要的意义。在沉积相研究基础上,结合薄片鉴定、粒度分析、物性分析、高压压汞等分析化验资料,对研究区储层特征及物性影响因素进行了深入的剖析,同时对研究区内相邻区块13-A和13-B相同沉积相带储层物性差异的原因也进行了分析。研究结果表明:沉积作用从根本上控制了研究区的储层物性特征,而成岩作用大大降低了储层的孔隙度,高温、高压虽然促进了次生孔隙的发育,更好地保护了孔隙,但溶蚀作用导致的孔隙结构复杂化使储层的渗透性未能得到有效的改善;宏、微观综合作用导致的局部大喉道更为发育、流体沿大孔喉优先渗流,从而表现出更好的渗透性,是研究区相同沉积相带储层物性差异的主要原因。
It is of great significance to further investigate the features of high temperature and high pressure reservoirs and the influencing factors of the physical properties in the middle and deep Huangliu Formation in the East of Yinggehai Basin, which are of great significance for the further exploration of the favorable reservoirs and the efficient development of later gas reservoirs. Based on the study of sedimentary facies, combined with the analysis of thin sections, particle size analysis, physical property analysis and high pressure mercury intrusion analysis, the influencing factors of reservoir characteristics and physical properties in the study area are deeply analyzed. At the same time, The reasons for the differences in physical properties of the same sedimentary facies 13-A and 13-B are also analyzed. The results show that: the sedimentation fundamentally controlled the physical properties of reservoirs in the study area, and diagenesis greatly reduced the porosity of reservoirs. While the development of secondary pores promoted the formation of secondary pores and better protected the porosity, However, the complicated pore structure caused by dissolution can not effectively improve the permeability of the reservoir. The local large throat caused by the combined action of macro and micro is more developed, and the fluid preferentially seeps through the large pore throat, thus showing better performance Permeability is the main reason for the difference in physical properties of the same sedimentary facies belt in the study area.