摘要
随着准噶尔盆地西北缘勘探程度的逐步提高,勘探阶段已经从断块和低幅度背斜等构造圈闭转入以岩性圈闭为主的精细勘探.车排子地区岩性油藏具有砂体厚度薄,含油面积小,横向变化快,油水层反射特征类似等特点,地震识别与评价困难.针对以上难点,本文以新疆车排子地区高精度三维地震资料为基础,利用多井分时窗多子波方法精细标定油层位置,正演模拟明确油气层特征,叠前AVO属性检测、叠后多属性交汇分析综合描述储层,两步法模拟声波反演精细落实油水边界,最终形成了一套适合春光油田沙湾组二段隐蔽油藏识别描述方法,并在该区新三维资料的应用中取得了很好的勘探效果,发现了P2-80等一系列油气藏,并指导了扩边井的部署.该方法对类似地质情况地区储层的识别描述具有一定的指导意义.
With the continuous improvement in exploration in northwestern of Junggar basin, the situation of exploration targets transform from the structural reservoir exploration to the lithologic reservoir exploration. The characteristics of this kind of lithologic reservoir are small thickness of reservoir, rapid change in horizontal and difficult to distinguish with seismic data in chepaizi area. however, with this characters,Basing on the high precision 3D seismic data, The authors using fine synthetic seismogram correlation of multiple parameters to fulfil the reservoir location, forward modeling to clear the characteristics of oil and gas reservoir, prestack attribute and stacked multiple attribute analysis description the reservoir, Exploring the two-step pseudo acoustic inversion method to detection the oil-bearing reservoirs in the area, Eventually forming a subtle reservoir description methods which suitable the second member of Shawan Formation in Chunguang Oilfield. And good exploration results have been obtained in the application of the new 3D data by using the above method in this area. We discovered a series of oil and gas reservoirs such as P2-80. The methods have a certain guiding significance in the similar areas.
出处
《地球物理学进展》
CSCD
北大核心
2013年第6期3190-3196,共7页
Progress in Geophysics
基金
国家科技重大专项(编号:2011ZX05002-002)资助
关键词
岩性油气藏
正演模拟
合成记录标定
叠前属性
叠后多属性分析
lithologic reservoir
forward modeling
synthetic seismogram correlation
prestack attribute
stacked multiple attribute analysis
