摘要
准噶尔盆地西北缘百口泉油田百21井区侏罗系八道湾组三段为曲流河沉积,其泥岩夹薄层砂体横向变化快,预测难度大。高分辨率测井约束随机优化地震反演技术利用了测井与地震数据的地质统计规律,采用随机优化理论实现对地震数据进行储集层波阻抗及其他物性的反演,无需复杂的建模过程,而且是通过解正问题来解反问题,因而使得约束比较容易实现。鉴于研究区砂泥岩波阻抗有部分区域重叠,而校正后的自然电位能很好地区分砂泥岩,因此应用该方法对目的层进行了波阻抗反演和自然电位反演,2次反演结合共同预测研究区内储集层分布情况,效果较好。
Faking prediction of member-3 mudstone with thin layer sand of Jurassic Badaowan formation in Bai-21 well area in Baikouquan oilfield in northwestern margin of Junggar basin as an example, the application of high-resolution logging constrained stochastic optimiza- tion seismic inversion technology to such a reservoir prediction is discussed, and good results are analyzed, As a further development of con- ventional seismie inversion, this techno｜ogy takes advantage of the geostatistical law of the logging anti seismic data and realizes the inver- sion of wave impedance and other physical properties using stochastic optimization theol.~＇, without complex modeling process. At the same time, this technology answered inverse problem by solving positive questions, thus making the constraint be relatively easy to achieve. In view of the partial overlap of sand-shale wave impedance in the study area and the corrected self-potential property that ean do well in dis- linguishing the sandstone from mudstone, the wave impedance inversion and the self-potential inversion are all used for the target zone, in order to more properly predict the reservoir distribution in this area.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第3期341-344,共4页
Xinjiang Petroleum Geology
关键词
百口泉油田
百21井区
薄砂体
高分辨率
测井约束反演
储集层预测
Junggar basin
Baikouquan oilfieht： thin sand body： high resolution： logging constrained inversion： reservoir prediction
