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M盆地T区块西部断裂带油气成藏演化规律及期次分析 预览

Oil and Gas Accumulation and Evolution in the Western Fault Zone of T Block in M Basin Periodic analysis
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摘要 本文综合利用沉积成岩、构造演化等资料,对M盆地T区块西部断裂带成藏演化规律及期次进行了探讨,认为:(1)三叠纪末中萨卡组和中萨卡组烃源岩相继达到排烃高峰,油气沿优势运移通道就近成藏;但随印支运动发生,下部原生油气藏几乎被破坏殆尽,逸散的油气沿断层向上运移至中萨卡组及上萨卡组形成次生油气藏;(2)成藏期次以印支运动为界分为原生、次生两期成藏。 Based on the data of sedimentary diagenesis and tectonic evolution,this paper discusses the regularity and stages of hydrocarbon accumulation and evolution in the Western fault zone of T block in M Basin. It is considered that:(1) the source rocks of M. Saka and L. Saka Formations reached the peak of hydrocarbon expulsion one after another at the end of Triassic,and hydrocarbon migration along the predominant pathway was close to hydrocarbon accumulation. After the Indo-China movement, the primary oil and gas reservoirs in the lower part were almost destroyed,the escaped oil and gas migrated upward along the fault to the M. Saka and U. Saka formation to form secondary oil and gas reservoirs;(2) The period of hydrocarbon accumulation is divided into indigenic and secondary two stages by the Indo-China movement.
作者 赵栋 李耀龙 Zhao Dong;Li Yaolong(Laboratory Management Office of Xi'an Petroleum University (Laboratory Center),Xi'an 710065)
出处 《石化技术》 CAS 2019年第5期169-169,164共2页 Petrochemical Industry Technology
关键词 M盆地 成藏演化 成藏期次 M Basin Reservoir formation evolution Accumulation stage
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