塔河油田X2井区三叠系河道边界及发育期次预测
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摘要
塔河油田三叠系是塔河碎屑岩油气勘探的主要层系,X2井区是三叠系发现的第一个河道型岩性油气藏。本文通过常规地震属性提取分析、RGB分频混色技术的应用,对X2井区河道边界进行了刻画,同时应用地震沉积学中的沿层切片技术对河道期次进行了划分,得出了X2井区共有2期7条河道,其中有1期2号、3号为油藏河道,2期3号、4号河道为气藏河道,1期1号河道为待定油气藏河道,该7条河道的预测与实钻井相符合,为塔河油田碎屑岩油气增储上产提供了有利依据。
The Triassic reservoirs is the main layer for oil and gas exploration in Tahe oilfield,X2 well area is the first lithologic reservoir with channel type by Triassic reservoirs.Based on the data of conventional Seismic Attribute analysis,the application of Red Green Blue(RGB)frequency dividing and mixing technology,the channel boundary of X2 well area is characterized.By using along-horizon attribute slice technique to characterize the stage of channel,seven channels in two stage are discovered in X2 well area.Number two and three are oil reservoir channels in the first stage,and number three and four are gas reservoir channels in the second stage,number one is undetermined oil and gas reservoir in the first stage.The application of the prediction of seven channels corresponds with the actual dirlling,which povides favourable evidence for the adding of gas and oil reservoir in Tahe oilfield.
引文
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