石油学报 ›› 2026, Vol. 47 ›› Issue (9): 1803-1817.DOI: 10.7623/syxb202609005

• 地质勘探 • 上一篇    

塔西北地区阿南区块、柯坪区块、乌什区块油气成藏模式与有利区优选

尤新才1, 白雨1, 霍进杰1, 张运波2, 宋明星1, 王泽胜1, 潘进1, 王秋玉1, 邢宇鑫2   

  1. 1. 中国石油新疆油田公司勘探开发研究院 新疆克拉玛依 834000;
    2. 中国地质调查局油气资源调查中心 北京 100083
  • 收稿日期:2026-04-07 修回日期:2026-05-13 发布日期:2026-10-14
  • 通讯作者: 张运波,男,1983年11月生,2011年获中国地质大学(北京)博士学位,现为中国地质调查局油气资源调查中心正高级工程师,主要从事油气地质调查与评价选区、油气资源评价等研究工作。Email:zhangyb2014@foxmail.com
  • 作者简介:尤新才,男,1982年12月生,2005年获中国石油大学(北京)学士学位,现为中国石油新疆油田公司勘探开发研究院副院长、总地质师、高级工程师,中国石油大学(北京)博士研究生,主要从事石油天然气地质与油气勘探规划部署方面的研究工作。Email:youxc@petrochina.com.cn
  • 基金资助:
    新型油气勘探开发国家科技重大专项“准噶尔盆地全油气系统与新领域勘探技术”(2025ZD1400302)资助。

Hydrocarbon accumulation model and favorable area optimization in the A’nan,Keping,Wushi blocks of northwestern Tarim Basin

You Xincai1, Bai Yu1, Huo Jinjie1, Zhang Yunbo2, Song Mingxing1, Wang Zesheng1, Pan Jin1, Wang Qiuyu1, Xing Yuxin2   

  1. 1. Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Xinjiang Karamay 834000, China;
    2. Oil and Gas Survey, China Geological Survey, Beijing 100083, China
  • Received:2026-04-07 Revised:2026-05-13 Published:2026-10-14

摘要: 塔里木盆地西北缘(塔西北)地区构造活动强烈,油气成藏条件复杂,制约了该地区油气分布规律的系统认识。聚焦阿南、柯坪和乌什3个区块,基于塔西北地区烃源岩的发育特征,以及油-源、气-源对比结果,分析了不同区块的油气成藏条件,建立了不同区块的油气成藏模式,优选了3个油气勘探有利区。研究结果表明:塔西北地区南部烃源岩的横向变化显著,阿南区块的油气主要来自于下寒武统玉尓吐斯组和肖尔布拉克组烃源岩,柯坪区块的油气主要来自于下寒武统玉尓吐斯组烃源岩,皆表现为近源供烃特征,而北部乌什区块的油气主要源自其东部拜城凹陷的三叠系黄山街组和侏罗系恰克马克组烃源岩,具有远源供烃的特点;成藏模式方面,阿南区块发育“双源供烃、断层输导、下生上储”的油气成藏模式,柯坪区块主要发育“近源供烃、侧向运移、构造-不整合复合输导”的油气成藏模式,而乌什区块则表现为“远源供烃、断层-不整合复合输导、下部潜山和上部断层相关圈闭聚集”的成藏特征。据此优选出阿南区块东部、柯坪区块西部和乌什区块东南部3个油气勘探有利区。

关键词: 塔西北地区, 柯坪断隆带, 阿南区块, 柯坪区块, 乌什区块, 油气成藏模式, 寒武系玉尔吐斯组, 寒武系肖尔布拉克组, 三叠系黄山街组, 侏罗系恰克马克组, 塔里木盆地

Abstract: The northwestern Tarim Basin is characterized by intense tectonic activity and complex hydrocarbon accumulation conditions, which inhibit a systematic understanding of hydrocarbon distribution patterns in the region. Focusing on the A’Nan, Keping and Wushi blocks, this study analyzes the hydrocarbon accumulation conditions of each block based on the development characteristics of source rocks in northwestern Tarim Basin and the results of oil-source and gas-source correlations. Hydrocarbon accumulation models are established for the respective blocks, and three favorable areas for oil and gas exploration are identified. The results indicate that the source rocks in the southern part of northwestern Tarim exhibit significant lateral variation. The hydrocarbon in the A’nan block mainly sourced from the Lower Cambrian Yuertusi and Xiaoerbulake formations, while in the Keping block primarily originated from the Lower Cambrian Yuertusi formation, both exhibiting near-source charging. In contrast, the hydrocarbon in the northern Wushi block are mainly sourced from the Triassic Huangshanjie Formation and Jurassic Qiakemake Formation source rocks in the eastern Baicheng sag, indicating far-source charging. In terms of hydrocarbon accumulation models, the A’nan block is characterized by “dual-source hydrocarbon supply, fault-controlled migration, and lower-generation but upper-reservoir accumulation”, whereas the Keping block primarily features “near-source hydrocarbon supply, lateral migration, and structure-unconformity composite transport system”. The Wushi block, on the other hand, exhibits a hydrocarbon accumulation model characterized by “far-source hydrocarbon supply, fault-unconformity composite transport system, and accumulation in lower buried-hill traps and upper fault-related traps”. Based on these findings, three favorable areas for oil and gas exploration are identified, i.e., the eastern A’nan block, the western Keping block, and the southeastern Wushi block.

Key words: northwestern Tarim Basin, Keping faulted-uplift belt, A’nan block, Keping block, Wushi block, hydrocarbon accumulation model, Cambrian Yuertusi Formation, Cambrian Xiaoerbulake Formation, Triassic Huangshanjie Formation, Jurassic Qiakemake Formation, Tarim Basin

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