摘要
塔河油田石炭系的油藏主要含油气层段为卡拉沙依组砂泥岩互层段 ,该段油气层具有埋藏深 ,单层厚度小 ,横向变化大和连通性差的特点。通过对比 ,将石炭系卡拉沙依组砂泥岩段自上而下划分为 5个油组 ,笔者从储层的沉积特征、岩石学特征及物性特征入手 ,揭示了油藏储层的空间展布规律。
The Carboniferous hydrocarbon reservoirs in the Tahe Oil Field, Xinjiang are arranged into the interbedded sandstone and mudstone horizons in the Karashayi Formation. The hydrocarbon reservoirs are characterized by deep burial, small thickness of individual beds, and laterally discontinuous and disconnected strata. The sandstone and mudstone horizons in the Carboniferous Karashayi Formation may be divided, from top to bottom, into five oil formations, which have recorded a complete transgression regression cycle: the Ⅴ and Ⅳ oil formations were developed during the early transgressions, followed by Ⅲ, Ⅰ and Ⅱ oil formations during the later regressions.The spatial distribution of the oil reservoirs indicates that the oil and gas accumulations are mostly controlled by faults and structural lithologic traps and concentrated in the structural highs and composite structural lithologic traps below unconformities.
出处
《沉积与特提斯地质》
CAS
CSCD
2002年第2期53-57,共5页
Sedimentary Geology and Tethyan Geology
关键词
新疆
塔河油田
石炭系
卡拉沙依组
储层特征
油气分布
Tahe Oil Field
Carboniferous Karashayi Formation
hydrocarbon reservoirs
oil and gas distribution
