姬源油田池46井区长8层有利区预测

Favorable Area Prediction of Chang 8 Reservoir in Chi 46 Well Area of Jiyuan Oil Field

姬源油田位于鄂尔多斯盆地中西部,生、储、盖组合发育较好,有着乐观的油气开发前景。但它是岩性隐蔽油藏,储层物性差、非均质性强,所以有利区预测难度较大。本文引入井-地ERT技术,以池46井区长8低孔、低渗储层为研究目标,将池46井区内电阻率、饱和度分布情况与井-地ERT技术相结合建立了井-地ERT约束的三维地质模型。在此基础上引入储层评价参数,进而对储层进行了有利区预测。

Jiyuan oilfield locates in central and western Ordos basin,it has many multi-series of source rock,reservoir bed and caprock,so the prospect of oil and gas development is very good.However,it belongs to lithologic subtle reservoirs,its physical characteristics is bad and unhomogeneity is strong,so it is difficult to forecast its favorable area.In this article,taking low porosity and low permeability Chang 8 reservoir in Chi 46 well area as a study target,through introducing electrical resistance tomography(ERT),well-ground ERT constrained three-dimensional geological model was established by combining resistivity and saturation in Chi 46 well area with ERT.Then favorable area of Chang 8 reservoir was predicted through introducing reservoir evaluation parameters..