CO_(2)驱油及地质埋存适宜度三阶段三类三维表征与评价  

Three-stage,three-category,three-dimensional characterization and evaluation of CO_(2) enhanced oil recovery and geological carbon storage

作　　者：王泽宇 欧成华 肖富润[1] 李航 郭培培 权昊森 闫博 彭仕轩 WANG Zeyu;OU Chenghua;XIAO Furun;LI Hang;GUO Peipei;QUAN Haosen;YAN Bo;PENG Shixuan(Petroleum Engineering School,Southwest Petroleum University,Chengdu 610500,China;National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;Research Institute of Exploration and Development,Tuha Oilfield Company,PetroChina,Hami Xinjiang 838202,China;Development Departmen,Southwest Oil and Gas Field Company,PetroChina,Chengdu 610500,China)

机构地区：[1]西南石油大学石油与天然气工程学院,成都610500 [2]西南石油大学油气藏地质及开发工程全国重点实验室,成都610500 [3]中国石油吐哈油田分公司勘探开发研究院,新疆哈密838202 [4]中国石油西南油气田分公司开发事业部,成都610500

出　　处：《地质科技通报》2025年第1期64-73,共10页Bulletin of Geological Science and Technology

基　　金：四川省科技计划项目(2024NSFSC1960)。

摘　　要：为实现CO_(2)驱油及地质埋存适宜度、驱油量及埋存量表征与评价,在开发中后期油藏中充分考虑CO_(2)驱油及地质埋存机制的阶段性差异,提出了CO_(2)驱油及地质埋存适宜度的三阶段三类三维表征与评价方法。首先,开展CO_(2)驱油及地质埋存适宜度分阶段分类研究,包括基于5因素法的CO_(2)驱油-物理埋存阶段适宜度分类、基于6因素法的CO_(2)驱油-物理化学埋存阶段适宜度分类、基于6因素法的CO_(2)化学埋存阶段适宜度分类。然后,实施CO_(2)驱油及地质埋存适宜度三阶段三类三维表征与评价,包括基于埋存系数法的CO_(2)驱油量可视化分级分类评价、基于埋存系数法的CO_(2)埋存量可视化分级分类评价。将提出的三阶段三类三维表征与评价方法应用于中国东部某典型低孔、特低渗油藏,先后建立了适宜度三阶段三类标准、适宜度三阶段三类三维模型、每个阶段各类储集体的驱油量与埋存量三维模型,计算出实例区三阶段各类储集体CO_(2)驱油量648.24 t、埋存量2956.84 t,表征了各阶段各类储集体CO_(2)驱油及地质埋存的空间分布特征,为下一步CO_(2)捕获、利用和存储(CO_(2) capture,utilization and storage,简称CCUS)项目精细化作业提供了技术支撑。[Objective]This study aims to propose a novel three-stage,three-category,three-dimensional characterization and evaluation method for CO_(2)-enhanced oil recovery(EOR)and geological carbon storage(GCS).[Methods]This method assesses the suitability,oil recovery,and storage capacity of these projects while addressing the distinct phase differences in the mechanisms of CO_(2) EOR and GCS during the later stages of reservoir development.This method involves the classification of CO_(2) EOR and GCS suitability into three stages:(1)physical.storage suitability classification based on the five-factor method;(2)physicochemical storage suitability classification based on the six-factor method;and (3)chemical storage suitability classification based on the six-factor method.Additionally,this method provides a three-dimensional characterization and evaluation of CO_(2) EOR and GCS.It includes a visualization-based classification and assessment of the CO_(2) oil recovery amount and storage capacity using the storage coefficient method.The proposed evaluation framework has been applied to a representative low-porosity and ultralow-permeability reservoir in eastern China.[Results]The calculated CO_(2) oil recovery and storage capacity for the sample area are 648.24 tons and 2956.84 tons,respectively.These results highlight the spatial distribution characteristics of CO_(2) EOR and GCS at each stage and type.Ultimately,this three-stage,three-category,three-dimensional characterization and evaluation method offers vital technical support for refining CCUS projects and provides meaningful insights for subsequent operations.[Conclusion]The findings contribute to the scientific and rational planning and implementation of CO_(2) EOR and GCS projects,facilitating the sustainable development of oil and gas fields and enhancing resource utilization efficiency.

关 键 词：CO_(2)驱油及地质埋存 分阶段分类评价 三维表征 驱油量 埋存量 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]