薄层强底水多韵律层砂岩油藏高精细数值模拟研究——以塔河9区下油组油藏为例

doi:10.13809/j.cnki.cn32-1825/te.2022.02.015

Abstract

Abstract:

The sufficient bottom water energy and complex rhythmic layer distribution in the lower oil formation reservoir of 9th block of Tahe Oilfield lead to the great difficulties of the conventional numerical simulation technology to characterize the complex bottom water rising regulation and the effect of EOR measures. Taking the lower Triassic oil formation reservoir in 9th block of Tahe Oilfield as an example, the high-precision numerical simulation technology under the background of non up-scaling geological model is introduced. By the early movable water simulation, single diaphragm flow, multiple diaphragm flow and dynamic relative permeability techniques are deployed. Then, the reservoir history matching research is carried out, and the overall production matching degree of the reservoir reaches 95.23 %. At the same time, the high precision numerical simulation technology is used to predict the field rate enhancement and gas injection measures, which is highly consistent with the field production effect. In the process of high-precision numerical simulation, the water breakthrough mode of horizontal well is changed from water ridge in conventional simulation to “water-breakthrough at point” mode. The main controlling factor of flow field is the collaborative control of pressure field and physical parameter field.

Key words: Tahe Oilfield, sufficient bottom water, thin layer, multiple cyclothem, fine numerical simulation

CLC Number:

TE155

LIU Xueli,ZHENG Xiaojie,DOU Lian,XIE Shuang,PENG Xiaolong,ZHU Suyang. High precision numerical simulation of thin sandstone reservoir with sufficient bottom water and multiple cyclothem: A case study on lower formation of 9th block of Tahe Oilfield[J].Reservoir Evaluation and Development, 2022, 12(2): 391-398.

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High precision numerical simulation of thin sandstone reservoir with sufficient bottom water and multiple cyclothem: A case study on lower formation of 9th block of Tahe Oilfield

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