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

摘要/Abstract

摘要：

对于塔河9区下油组油藏,充足的底水能量和复杂的韵律层分布,导致了常规数值模拟技术难以表征复杂的底水上升规律和油藏提高采收率措施的效果。以塔河9区三叠系下油组油藏为例,介绍了不粗化地质模型背景下的高精细数值模拟技术,通过早期可动水模拟、单一隔板绕流和多重隔板绕流以及动态相渗3个技术进行油藏历史拟合研究,油藏整体产量拟合程度达到95.23 %。同时,采用高精细数值模拟技术对现场提液和注气措施进行了预测,与现场生产效果保持了高度的一致性。在高精度数值模拟过程中,水平井的见水模式由常规模拟中的水脊,转变为“点出水”模式,流场的主控因素为压力场和物性参数场协同控制。

关键词: 塔河油田, 强底水, 薄层, 多韵律, 高精细数值模拟

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

中图分类号:

TE155

刘学利,郑小杰,窦莲,谢爽,彭小龙,朱苏阳. 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[J]. 油气藏评价与开发, 2022, 12(2): 391-398.

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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