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七里村油田的主力油层为长6油层,目前对长6储层的地质特征以及油藏特征都取得了一定的认识。近年来,我们发现了七里村油田长4+5油层,但对其还缺乏一定认识,本文对七里村油田长4+5的沉积微相进行研究,从而为其开发提供一定的理论依据[1]。本文对长4+5储层地质特征及影响因素进行分析并取得了以下认识:研究区岩石类型以细砂岩为主,属于中、低孔、低渗储层;机械压实、溶蚀等成岩作用是影响其储层物性的主要因素。
The main oil reservoir in Qili Village is Chang 6 reservoir. At present, some understandings have been made on the geological characteristics and reservoir characteristics of Chang 6 reservoir. In recent years, we discovered the Chang 4 + 5 reservoir in Qilicun Oilfield, but lacked a certain understanding of it. In this paper, we study the sedimentary microfacies of 4 + 5 in Qilicun Oilfield and provide a theoretical basis for its development [1 ]. This paper analyzes the geological characteristics and influencing factors of Chang 4 + 5 reservoirs and obtains the following findings: The rock types in the study area are mainly fine sandstone, belonging to medium-, low- and low-permeability reservoirs; diagenesis such as mechanical compaction and dissolution Is the main factor affecting the reservoir physical properties.