CAJ | 학술논문

在西部复杂叠合盆地中,油气藏形成后的调整改造现象非常普遍.通过对塔中地区调整改造事件的分析,认为塔中地区经历了3～4期调整改造,分别为:奥陶纪、志留纪的破坏性改造、印支-燕山期的调整性改造、喜马拉雅期的建设性改造.在塔中地区的具体表现形式为断层的局部活动和圈闭的局部迁移.调整改造对塔中地区油气藏的影响主要表现在3个方面:(1) 导致了多种相态油气并存;(2) 导致了油气的再分配;(3) 导致了油气藏的现今分布格局.目前塔中地区发现的油气藏大部分是从下伏地层调整上来的次生油气藏,在后期构造调整较弱的塔中10号带、塔中I号坡折带西部地区下伏奥陶系、寒武系有良好的勘探潜力.
재서부복잡첩합분지중,유기장형성후적조정개조현상비상보편.통과대탑중지구조정개조사건적분석,인위탑중지구경력료3～4기조정개조,분별위:오도기、지류기적파배성개조、인지-연산기적조정성개조、희마랍아기적건설성개조.재탑중지구적구체표현형식위단층적국부활동화권폐적국부천이.조정개조대탑중지구유기장적영향주요표현재3개방면:(1) 도치료다충상태유기병존;(2) 도치료유기적재분배;(3) 도치료유기장적현금분포격국.목전탑중지구발현적유기장대부분시종하복지층조정상래적차생유기장,재후기구조조정교약적탑중10호대、탑중I호파절대서부지구하복오도계、한무계유량호적감탐잠력.
In the complicated superimposed basin in western China,the adjustment and modification after the formation of oil and gas reservoirs are very common,through the analysis of the adjustment and modification happening in central Tarim Basin,it is recognized that the area underwent 3 to 4 times adjustment and modification,they were in Ordovician and Silurian,which was destructive,Indo-Yanshan period and Himalaya period,which were constructive.In central Tarim area,the forms of the adjustment and modification are local activity of faults and local migration of traps.There are following three aspects of the influence of adjustment and modification on the oil and gas reservoirs in central Tarim,firstly,the co-existence of multiple phase-behavior oil and gas,secondly,re-allocation of hydrocarbon resource and thirdly,the formation of the present distribution of oil and gas.Most of the discovered reservoirs in Central Tarim are the secondary ones adjusted from underlaid formations,in No.10 belt and slope break on No.1 belt in central Tarim,the underlaid Ordovician and Cambrian are of bright explorative potential.