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在分析陕西川口油田长６油层组沉积相特征的基础上，对储集层的岩石学特征和成岩作用以及孔隙结构进行了研究。认为长６油层组的环境演化代表了浅水台地型三角洲逐渐转变为陆上平原的历史，曲流河道砂体是区内油气富集的有利相带。浊沸石、方解石、绿泥石的胶结、化学压实作用和浊佛石、长石的溶解作用是影响砂岩储集性能的主要因素。孔隙的演化与盆地的演化密切相关。长６油层组及其上下层位构成了一套良好的生储盖组合，长６１和６２段是川口油田的主力油层。
Based on the analysis of sedimentary facies characteristics of Chang 6 reservoir in Kawaguchi oilfield in Shaanxi Province, the petrological characteristics, diagenesis and pore structure of reservoirs are studied. It is considered that the environmental evolution of the Chang 6 reservoir represents the history of the shallow platform delta becoming a land plains gradually. The meandering channel sand body is a favorable facies belt for hydrocarbon enrichment in the area. Limestone, calcite, chlorite cementation, chemical compaction and the dissolution of feldspar and feldspar are the main factors affecting the reservoir performance of sandstone. The evolution of pores is closely related to the evolution of the basin. The Chang 6 reservoir group and its upper and lower strata constitute a good combination of reservoirs and caprocks, with sections 61 and 62 being the main reservoirs of the Kawaguchi oilfield.