特种油气藏2026，Vol.33Issue(1)：52-59,8.DOI:10.3969/j.issn.1006-6535.2026.01.006
准噶尔盆地玛湖凹陷百口泉组地层圈闭成藏主控因素与定量评价
Controlling factors and quantitative evaluation of stratigraphic-trap accumulation in the Baikouquan Formation,Mahu Sag,Junggar Basin
摘要
Abstract
To clarify the main controlling factors for formation of stratigraphic-unconformity hydrocarbon traps in the Baikouquan Formation of the Mahu Sag in the Junggar Basin,petroleum geology theory and probabilistic methods were applied to systematically analyze the reservoir architecture,identify and quantify the primary geological influencing factors,and a set of comprehensive quantitative evaluation methods were formulated.The results showed that,under the Mahu Sag's paleo-geomorphology and characteristic sedimentary system,the hydrocarbon generation areas were alka-line with abundant algal organisms;the source rocks were rich in organic matter with high conversion rates and great hydrocarbon-generation potential;and these were accompanied by extensively distributed heterogeneous tight sand-stones.This combination provided the Mahu Sag with stable source conditions and favorable reservoir settings.Moreo-ver,the combined unconformity-fault system allowed hydrocarbons to escape from source layers and migrate along faults into reservoirs with integrity and effective retention.Thestudy offers a critical basis for quantitative evaluation of reservoirs in the Mahu Sag,significantly improving accuracy and providing valuable guidance for further exploration.关键词
地层圈闭/圈闭有效性/百口泉组/玛湖凹陷/定量评价Key words
stratigraphic trap/trap effectiveness/Baikouquan Formation/Mahu Sag/quantitative evaluation分类
能源科技引用本文复制引用
李怡普,万泽鑫,郑孟林,王晓龙,鲍一遥,安志渊,陈洪,肖七林..准噶尔盆地玛湖凹陷百口泉组地层圈闭成藏主控因素与定量评价[J].特种油气藏,2026,33(1):52-59,8.基金项目
国家自然科学基金"超压碳酸盐岩弹性波速度研究"(41702135) （41702135）
"十四五"前瞻性基础性重大科技项目"地层不整合油气藏成藏主控因素与关键要素定量评价技术研究"(2021DJ0405) （2021DJ0405）
