| 胡纳川,逄淑伊,肖大坤,罗江华,田楠,贾善坡,刘旭东.低渗储层地质-工程甜点评价——以渤中某油田沙三段为例[J].矿产勘查,2026,17(1):165-174 |
| 低渗储层地质-工程甜点评价——以渤中某油田沙三段为例 |
| Geological-engineering sweet spot evaluation for low-permeability res-ervoir: A case study of the Sha 3 section of a certain oilfield in Bozhong |
| 投稿时间：2024-09-29 |
| DOI：10.20008/j.kckc.202601013 |
| 中文关键词: 熵权-优劣解距离法 评价指标 低渗储层 地质-工程一体化 甜点预测 |
| 英文关键词: EWM-TOPSIS evaluating indicator low permeability reservoir integration of geology and engi-neering sweet spot prediction |
| 基金项目:本文受中国海洋石油集团有限公司“十四五”重大科技专项“海上低渗及潜山油气田有效开发技术”(KJGG2022-0700)资助。 |
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| 中文摘要: |
| 低渗油藏储层非均质性强、孔渗物性差，油气开采效果不佳，通过地质-工程甜点选区可以为油气高效开发提供基础。本文从地质-工程一体化角度，构建包含多个地质与工程参数的甜点评价指标体系，基于实验、测井、地震等资料，利用随机、确定性建模方法及有限元数值模拟方法在 Petrel平台内建立储层基质、天然裂缝、岩石力学和地质应力三维非均质模型，采用熵权-优劣解距离法分析评价了渤中某油田沙三段的地质-工程甜点区。研究结果表明，该低渗油藏地质-工程甜点的各评价指标权重差异很小，油气开发需要综合兼顾储层基质孔渗、天然裂缝、岩石力学性质和地质应力特征；地质-工程甜点区主要位于该油藏砂岩储层的西部和东北部，是油气资源开发的有利区。 |
| 英文摘要: |
| Low permeability oil reservoirs with abundant resources, strong heterogeneity and poor porosityhave poor resource extraction efficiency, however, geological engineering sweet spot selection can provide a founda-tion for efficient oil and gas development of such reservoirs. Geological engineering sweet spot selection can provide a foundation for efficient oil and gas development. From a geology-engineering integration perspective, this paperconstructs a sweet spot evaluation index system that includes multiple geological and engineering parameters. Basedon experimental, logging and seismic data, we utilize stochastic and deterministic modeling methods along with fi-nite element simulations within the Petrel platform to build three-dimensional heterogeneous models of reservoirmatrix, fractures, rock mechanics, and geological stress. An evaluation method of entropy weight-technique for or-der preference by similarity to ideal solution (EWM-TOPSIS), which is not subject to subjective interference, is em-ployed to evaluate the geological-engineering sweet spots in the Es3 reservoir. The research results indicate thatthere is little difference in the weight of various evaluation indicators for the geological-engineering sweet spot ofthis low-permeability reservoir. Oil and gas development requires a comprehensive consideration of matrix porosityand permeability, natural fractures, rock mechanical properties, and geological stress characteristics for the reser-voir. The geological engineering sweet spot area is mainly located in the western and northeastern parts of the sand-stone reservoir, which is a favorable area for oil and gas resource development. |
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