大庆石油地质与开发2025，Vol.44Issue(3)：32-40,9.DOI:10.19597/J.ISSN.1000-3754.202310032
油源断层对油气成藏潜力影响的评价方法及其应用
Evaluation method and its application for influence of oil-source faults on hydrocarbon accumulation potential:A case from Kongnan area in Huanghua Depression
摘要
Abstract
Actual exploration shows that some favorable traps near source faults do not produce oil,so evaluation on influence of faults-related attributes on oil and gas accumulation is required.Starting from internal structure of fault zones and combining relevant theories of oil and gas migration system,fault factors affecting accumulation are ana-lyzed,and evaluation method for influence of source faults on accumulation potential is established.The results show that fault throw,fault activity rate,distance to source rock,fault plane geometry,lithology on both sides of the fault and relative relationship between trap and fault are fault factors influencing accumulation.Among these fac-tors,fault activity rate and fault plane geometry are used to evaluate fault activity,while relative relationship be-tween trap and fault,lithology on both sides of the fault,fault throw and distance to source rock are used to evaluate lateral and vertical migration capacity of oil and gas.Factors affecting accumulation such as fault throw,fault activi-ty rate and distance to source rock of various layers in Kongxi Fault show significant segmentation,with fault plane curvature and lithology on both sides varying with depth and location,therefore having different impacts on accumu-lation.By evaluating influence of source faults on nearby traps based on different weights of fault factors,traps with comprehensive evaluation score of>3.5 are considered to be favorable oil producing traps,and application shows consistency of 87.5%between calculation results and drilling results.The research provides an effective system for evaluating influence of faults nearby traps on accumulation potential,thereby effectively delineating favorable accu-mulation areas.关键词
油源断层/断层/断面/油气运移/输导体系/成藏模式/成藏潜力/黄骅坳陷Key words
source fault/fault/fault plane/oil and gas migration/transport system/accumulation pattern/accu-mulation potential/Huanghua Depression分类
石油、天然气工程引用本文复制引用
徐国庆,卢刚臣,吴振东,李廷辉,王文庆,王仁康..油源断层对油气成藏潜力影响的评价方法及其应用[J].大庆石油地质与开发,2025,44(3):32-40,9.基金项目
中国石油大港油田公司一体化项目"大港探区重点勘探领域关键技术研究"(DGYT-2023-JS-845). （DGYT-2023-JS-845）
