涠洲XX油田J2 Ⅱ油组测井资料非均质储层隔夹层精细研究
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摘要
涠洲XX油田开发层位为J2Ⅱ油组,岩心及测井资料显示J2Ⅱ油组隔夹层局部发育,由于资料较少,展布范围不确定,无法进一步研究隔夹层对含水上升速度的影响。利用岩心和测井资料对该油藏隔夹层进行研究,把隔夹层分为泥质隔夹层和钙质隔夹层,确定了隔夹层的识别方法及计算模型;建立了隔夹层渗透性精细划分标准,将隔夹层划分为中—高渗透性、低渗透性、特低渗性三类;通过精细刻画J2Ⅱ油组隔夹层在平面上的展布,为重新建立该油藏的精细地质模型提供了关键资料,也为后期油藏数值模拟研究含水上升规律奠定了基础。
J2Ⅱ(ZhujiangⅡ)oil series is the objective pay zone in Weizhou XX oilfield. The core and logging data show that there are some inter-layers developed in the J2Ⅱ oil series.It is unable to further study the effect of the inter-layer on the rising velocity of water-cutting due to the limitation of relevant data and the uncertainty of the distribution range of inter-layer. Based on the core and well logging data,the authors conducted a fine study on the inter-layer through dividing the inter-layer into argillaceous inter-layer and calcareous inter-layer, determining the identification method and calculation model of inter-layer, and establishing the criteria of inter-layer classification by permeability.It can be divided into three levels by three grades of permeability,namely medium-high permeability, low permeability and extra-low permeability. The fine depiction of inter-layers in J2Ⅱ oil series provided key information for re-establishing the fine geological model, and also laid a foundation for the subsequent reservoir numerical simulation study of water-cutting rising.
J2Ⅱ(ZhujiangⅡ)oil series is the objective pay zone in Weizhou XX oilfield. The core and logging data show that there are some inter-layers developed in the J2Ⅱ oil series.It is unable to further study the effect of the inter-layer on the rising velocity of water-cutting due to the limitation of relevant data and the uncertainty of the distribution range of inter-layer. Based on the core and well logging data,the authors conducted a fine study on the inter-layer through dividing the inter-layer into argillaceous inter-layer and calcareous inter-layer, determining the identification method and calculation model of inter-layer, and establishing the criteria of inter-layer classification by permeability.It can be divided into three levels by three grades of permeability,namely medium-high permeability, low permeability and extra-low permeability. The fine depiction of inter-layers in J2Ⅱ oil series provided key information for re-establishing the fine geological model, and also laid a foundation for the subsequent reservoir numerical simulation study of water-cutting rising.
引文
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[3]杨帆,廖茂杰,王谦,等.利用测井资料识别隔夹层——以塔中4油田为例[J].工程地球物理学报,2014,11(4):487-492.
[4]周国文,谭成仟,郑小武,等.H油田隔夹层测井识别方法研究[J].石油物探,2006,45(5):542-545.
[5]陈伟,何俊富,杨斌,等.DH油田隔夹层测井识别研究[J].物探化探计算技术,2011,33(2):202-206,109.
[6]邓旭波.准噶尔盆地中部1区块J1s2储层非均质隔夹层特征[J].科学技术与工程,2016,16(14):27-31.