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对子长油田余家坪区岩性、电性、物性和含油性进行研究,为储量评价以及油田开发提供科学依据。通过岩心、测井、试油以及分析化验资料研究“四性关系”特征。研究区长2砂岩属低孔-低渗储层,孔隙结构以中~小孔隙为主,电性可以很好的反映岩性、物性与含油性。余家坪区长2油层组的储集层在电测曲线上显示为自然电位曲线负异常,自然伽玛低值,微电极两条曲线分开,声波时差曲线相对较低,而且比较稳定,电阻率曲线随含油性不同而变化。
The research on lithology, electrical property, oiliness and oiliness of Yujiaping oilfield in Zichang oilfield provides scientific basis for reservoir evaluation and oilfield development. Through the core, logging, oil testing and analysis of laboratory data to study the “four relationships” feature. The study area 2 sandstone belongs to the low-porosity and low-permeability reservoirs. The pore structure is dominated by medium-small pores, and the electrical properties can well reflect the lithology, physical properties and oil-bearing properties. The reservoirs of Chang 2 reservoir in Yujiaping area show negative natural curve of potentials and low value of natural gamma on the electrical measuring curve. The curves of the two electrodes of the microelectrode are separated and the acoustic time lag curve is relatively low and relatively stable. The resistance The rate curve varies with oiliness.