吐哈盆地吐鲁番坳陷西部二叠系生烃演化特征

Characteristics of Permian hydrocarbon evolution in western area, Turpan Depression, Turpan-Hami Basin

周文浩

ZHOU Wenhao

中国石化胜利油田分公司勘探开发研究院西部分院，山东 东营 257000

Western Branch of Research Institute of Exploration and Development, Shengli Oilfield Company, SINOPEC,
Dongying 257000, China

二叠系塔尔朗组为吐哈盆地一套主要生烃供烃层系，目前发现的鲁克沁油田，其油源证实来自该层系。对吐鲁番坳陷西部来说，研究二叠系塔尔朗组烃源岩生烃演化动态过程是探索油气成藏规律的关键。文中系统地研究了吐鲁番坳陷西部地区塔尔朗组烃源岩的生烃史，结合古构造研究分析，来探讨不同历史时期二叠系烃源岩的生烃演化特征。结果表明：吐鲁番坳陷西部二叠系受多期构造运动影响，可分为沉积间断型、后期再沉积型、持续沉积型等3种埋藏史类型；二叠系塔尔朗组烃源岩发育一次生烃型、持续生烃型等2种生烃史类型。生烃演化的精细研究，为精确寻找油气藏奠定了基础。

Tarlong Formation of Permian is the major hydrocarbon layer of the Turpan-Hami Basin, and the oil of Lukeqin Oilfield comes from this formation. For the western area in Turpan Depression, the dynamic processes of the evolution of Tarlong hydrocarbon are the key to explore the law of oil and gas accumulation. This article studies the history of Tarlong hydrocarbon in the western area of Turpan Depression, and uses the palaeotectonic research and analysis to explore the characteristics of Permian hydrocarbon evolution in different historical periods. The results show that the Permian Formation is influenced by multi-period tectonic movement, which can be divided into hiatus type, late redeposit type and continuous type; Tarlong hydrocarbon is divided into one hydrocarbon type and continuous hydrocarbon type. The fine research of hydrocarbon evolution establishes the foundation of the searching for oil and gas reservoirs.

10.6056/dkyqt201703004