海相油气地质2026，Vol.31Issue(4)：307-324,18.DOI:10.3969/j.issn.1672-9854.2026.04.001
天山南北缘冲断带侏罗系煤系全油气系统全类型储层特征及勘探新领域
Characteristics of all-type of reservoirs and new exploration fields of the Jurassic coal-measure total petroleum system in the thrust belts along the northern and southern margins of the Tianshan
摘要
Abstract
The Jurassic coal-measure total petroleum system in the southern and northern margin of the Tianshan mountains possess enormous oil and gas resource potential and represents a crucial area for domestic oil and gas reserve growth and production increase.However,it faces key challenges such as ultra-deep burial,ultra-high temperature and pressure,intense tectonic compression,and rapid sedimentary facies migration rates,and the typical reservoir development characteristics and spatial distribution patterns remain unclear.Based on drilling,logging,experimental testing,and outcrop data,and drawing on years of oil and gas exploration practice in the Kuqa Depression and the southern margin of the Junggar Basin,this study applies the theory and technical methods of the total petroleum system to systematically clarify the characteristics of all-type of reservoirs and new exploration directions.It is concluded that:(1)The Jurassic coal-measure strata develop a full-grain sequence sedimentary system comprising glutenite-sandstone-coal-mudstone/shale,forming all-type of reservoirs including pore-type,fracture-pore-type,fracture-type and organic-pore-type reservoirs,constituting a full-scale pore structure sequence covering millimeter-micrometer scale fractures,micrometer-scale pores and nanometer-scale pores.(2)The Jurassic coal-measure strata has also developed a continuous distribution feature of medium-low porosity and medium-low permeability conventional reservoirs,low porosity and low permeability conventional reservoirs,extremely low porosity and medium-low permeability tight reservoirs,and extremely low porosity and extremely low permeability unconventional reservoirs.The three main reservoir-forming mechanisms are:weak tectonic compression,weak compaction,and weak cementation preserving pores;strong tectonic compression creating fracture networks and enhancing porosity and permeability;and acidic fluid dissolution increasing porosity along with overpressure boosting permeability.The orderly distribution of all-type of reservoirs is controlled by the combined effects of sedimentary systems,structural compression,and organic matter evolution.(3)The fault-fracture body reservoirs(near-source tight gas)and fracture-pore-type reservoirs(inter-source tight gas)in the thrust belt,the pore-type reservoirs(inter-source tight gas)in deep depression zone,and the medium-high maturity organic-pore reservoirs(intra-source coal and shale gas)in the slope zone will be the new exploration fields and types of the Jurassic total petroleum system.关键词
侏罗系煤系/全油气系统/全类型储层/新勘探领域/天山冲断带/库车坳陷/准噶尔盆地南缘Key words
Jurassic coal-measures/total petroleum system/all-type reservoir/new exploration fields/Tianshan thrust belt/Kuqa Depression/southern margin of Junggar Basin分类
能源科技引用本文复制引用
贾承造,张荣虎,曾庆鲁,余朝丰,司学强,王珂,李东..天山南北缘冲断带侏罗系煤系全油气系统全类型储层特征及勘探新领域[J].海相油气地质,2026,31(4):307-324,18.基金项目
本文受国家自然科学基金企业创新发展联合基金集成项目(编号:U22B6002)和中国石油天然气股份有限公司基础性前瞻性科技重大专项(编号:2023ZZ02)联合资助 （编号:U22B6002）
