摘要
准噶尔盆地东部火山岩岩体相互叠置、彼此交错、识别难度大,对有效储层预测和油气开发带来极大困难。在"一体一藏"油藏模式的指导下,利用地质、岩心、测井、分析化验、地震和开发动态等多种资料,明确了准噶尔盆地东部裂隙式火山喷发模式和火山喷发期次,在此基础上,根据岩性旋回和地震反射特征划分出6个火山岩岩体和12个岩性段,结合试油结果进一步确定了研究区具有2个主力火山岩储层岩体,其中的单个火山岩储层岩体具有面积广、厚度与规模均较大的特征;火山岩岩体整体向东南方向倾斜,在断裂控制下与上覆沉积地层构成"屋脊"状的断层-地层圈闭油藏。此次研究可为后续的火山岩岩体储层预测和提高油气产能提供指导。
In recent years,volcanic rock reservoir exploration has become a hot spot in Junggar Basin,and breakthrough progresses have been made in different areas of Junggar Basin. The fact that the volcanic rock masses are stacked on each other increases the difficulty of identification and brings great difficulty in the prediction of effective reservoirs and oil and gas development. Under the guidance of＂ one rock mass,one reservoir ＂reservoir model,the data of geology,core,logging curves,analytical test,seismic and development dynamics,were used to confirm the fissure eruption mode and volcanic eruption periods. Six types of volcanic rock mass consisting of twelve sets of lithologic section were classified according to lithologic cycles and seismic reflection characteristics. The testing result further confirms that there are two main volcanic reservoir rock masses,and single volcanic reservoir rock mass has the characteristics of wide area,big thickness and large scale. The volcanic rock masses are inclined to the southeast direction overall,and constitute the ridge-like fault-stratigraphic trap reservoir together with the overlying sedimentary strata under the control of the faults. These results have great significance for the prediction of effective reservoirs and improvement of oil and gas production.
出处
《岩性油气藏》
CSCD
北大核心
2017年第6期15-22,共8页
Lithologic Reservoirs
基金
中国石油重大科技专项"火山岩油藏效益开发关键技术研究与应用"(编号:2017E-0405)
中国石油股份公司科技项目"准噶尔盆地石炭系火山岩分类评价与规模效益建产关键技术研究及工业化应用"(编号:KT2017-18-05)联合资助
关键词
火山岩
岩体划分
岩性旋回
电性特征
地震反射特征
石炭系
准噶尔盆地东部
volcanic rock
rock mass division
lithologic cycle
logging electrical characteristics
seismic reflec-tion characteristics
Carboniferous
eastern Junggar Basin
