伊川盆地屯1井区三叠系致密砂岩气藏特征及成藏条件  

Research on gas reservoir characteristics of Triassic dense sandstone in Tun 1 well of Yichuan basin and its reservoir forming conditions analysis

作　　者：严永新[1,2] 

机构地区：[1]成都理工大学,四川成都610059 [2]中国石化河南油田分公司石油勘探开发研究院

出　　处：《石油地质与工程》2013年第1期19-22,138,共4页Petroleum Geology and Engineering

摘　　要：位于伊川盆地伊川鼻状构造低部位的屯1井揭示三叠系上统暗色地层约1400m,有效烃源岩发育厚约612m,钻探证实油气显示丰富,具有大跨度长井段连续性含油气的特征,在三叠系上统椿树腰组下部压裂试气,获得日产7200m3的工业气流,揭开了伊川盆地及周缘乃至南华北地区非常规油气勘探的序幕。屯1井区椿树腰组气藏砂岩致密,异常低压,不含底水,不受构造控制,属致密砂岩气藏。该区三叠系致密砂岩气藏特征及形成条件的研究成果,对豫西及邻区油气勘探具有重要的指导意义。Located in the low position of Yichuan nose-like structure of Yichuan basin,Tun 1 well reveals that the upper dark formation of Triassic system is about 1400m,with the characterisitics of 612m developed effective source rock.The drilling results indicate rich hydrocarbon shows and have the characteristics of big span,long interval and continuous oilbearing.Fracturing testing on the lower part of upper Chunshuyao formation acquired daily commercial flow of 7 200 m3,which revealed the prelude of unconventional oil and gas exploration in Yichuan basin,surrounding areas and southern North China.The analysis results show the gas reservoir in Chunshuyao formation is a dense gas reservoir and has the characteristics of abnormal low pressure,no bottom water and not controlled by structure,which can provide significant guidance for oil and gas exploration in western Henan province and its adjacent regions.

关 键 词：伊川盆地 屯1井 三叠系 致密砂岩 气藏特征 成藏条件 

分 类 号：TE112.33[石油与天然气工程—油气勘探]