摘要
哥伦比亚Capella油田地质储量潜力大,迫切需要通过进一步油藏评价,探明石油储量。Capella油田的储层是第三系Mirador层、白垩系的Conglomerate层以及前寒武系基岩。Conglomerate层砾岩、砂岩储层为双重介质、孔隙-裂缝型储层。裂缝型油藏常见模型有双孔双渗、双孔单渗和三重介质渗流模型。针对目的储层Conglomerate层特点,利用现有岩芯资料、成像测井研究成果等对Conglomerate砂砾岩裂缝地层建立的了准确的双孔双渗模型,能够定性地预测裂缝,从而作为Conglomerate层砂砾岩裂缝油藏有效开发的重要依据,并将模型中的渗透率与试井解释的油藏动态渗透率对比,对该模型进行了验证。采用裂缝-基质型双孔双渗储层建模方法,建立了符合该油田油藏地质特征的双孔双渗三维地质模型。为储层表征及后续的油藏数值模拟打下了坚实的基础。
Reservoir geological model includes a structural model,reservoir model,fluid distribution model,etc.Among them,the reservoir geological model is the core of oilfield geological modeling research and the necessary foundation of reservoir numerical simulation,which runs through every stage of oil and gas field exploration and development.Capella oilfield has great geological reserves potential,and it is urgent to find out the oil reserves through further reservoir evaluation.The reservoirs in Capella oilfield are the Mirador layer of tertiary,conglomerate layer of cretaceous and pre-Cambrian bedrock.Conglomerate and sandstone reservoirs are dual-media,pore-fracture reservoirs.Common models of fractured reservoirs include double porosity and double permeability,double porosity and single permeability,and triple medium percolation model.According to the characteristics of the target reservoir Conglomerate layer,using the existing core data and imaging logging research results,an accurate dual-porosity and dual-permeability model is established for the Conglomerate Glutenite fracture formation,which can qualitatively predict the fractures.It is an important basis for the effective development of fractured reservoirs,and the model is verified by comparing the permeability in the model with the dynamic permeability of the reservoir explained by well testing.Aiming at the characteristics of Conglomerate reservoirs,this paper adopts the method of fracture-matrix dual-porosity and dual-permeability reservoir modeling and establishes a three-dimensional geological model of dual-porosity and dual-permeability,which accords with the geological characteristics of oil reservoirs in this oilfield.It lays a solid foundation for reservoir characterization and subsequent reservoir numerical simulation.
作者
王斌
WANG Bin(China University of Geosciences(Beijing),Beijing 100083,China;China Foreign Economy and Trade Trust Co.,Ltd.,Beijing 100031,China)
出处
《中国矿业》
2023年第S01期126-134,共9页
China Mining Magazine
关键词
Capella油田
双孔双渗
储层建模
三维地质模型
Capella oilfield
double porosity and double permeability
reservoir modeling
three-dimensional geological model
