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目前,低渗储层已经成为我们开发的重点。低渗储层一般具有典型的低孔低渗特点,对造成低孔低渗的因素进行分析,对指导低渗储层的开发具有一定的指导意义,本文以M地区低渗储层为研究对象对其成因进行了分析,结果表明:(1)研究区长6储层油藏类型为岩性油藏,且储层物性较差为低孔隙度、低渗透率储层;(2)研究区以细粒长石砂岩为主,并含有少量的粉砂岩,填隙物含以绿泥石、方解石为主,粘土矿物含有大量的绿泥石及伊利石;(3)研究区长6储层的成岩作用主要包括了机械压实作用、胶结作用和溶蚀作用以及压溶作用,机械压实作用、胶结作用和压溶作用对储层的物性起破坏性的作用,溶蚀作用对储层的物性起建设性的作用。
At present, the low permeability reservoir has become the focus of our development. The low permeability reservoirs generally have the characteristics of low porosity and low permeability. The analysis of the factors causing the low porosity and permeability of the low permeability reservoirs is of guiding significance for the development of low permeability reservoirs. In this paper, the low permeability reservoirs in M area The results show that: (1) The reservoirs of Chang 6 reservoirs in the study area are lithologic reservoirs, and the reservoirs are poorly characterized by low porosity and low permeability reservoirs; (2) The study area It is mainly composed of fine-grained feldspathic sandstones and contains a small amount of siltstones. The interstitial inclusions are mainly chlorite and calcite, and the clay minerals contain a large amount of chlorite and illite. (3) The Chang 6 reservoir Diagenesis mainly includes mechanical compaction, cementation and dissolution as well as pressure-dissolving, mechanical compaction, cementation and pressure-dissolving on the physical properties of the reservoirs. The effects of dissolution on the physical properties of the reservoir Play a constructive role.