塔中沙漠区碳酸盐岩三维地震勘探技术
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摘要
塔克拉玛干沙漠中部地区,广泛发育碳酸盐岩岩性油气藏,勘探前景良好。在该区域实施的三维地震勘探中,针对碳酸盐岩裂缝储层进行了以削弱采集脚印、提高信噪比和分辨率为目的的观测系统量化设计,采取了100%的潜水面下激发和高精度的表层调查及沙丘曲线静校正等野外采集方法,应用了三维叠前多域、多方法串联迭代去噪等处理手段,以及礁滩复合体综合解释技术,三维地震资料品质得到了大幅度的提高,地质认识得到了更新,大大提高了钻井成功率。
In the central part of Taklamakan Desert,lithologic reser- voir of carbonate rock distributes widely and shows great hy- drocarbon potential.A series of techniques were adopted in 3-D seismic exploration,accounting for the fractured carbonate res- ervoirs in this area.Layout was designed quantitatively to weaken acquisition footprint and increase signal-to-noise ratio and resolution.Excitation was carried out under water table. High accuracy near surface investigation and static correction of sand dune curve were performed.Noises were suppressed by different techniques such as 3-D multi-domain noise elimina- tion,and cascaded use of different noise elimination methods. Compound reef flat was comprehensively interpreted.With the improvement of 3-D seismic data quality,geologic insight has been renewed,and hit rate of drilling well has increased greatly.
In the central part of Taklamakan Desert,lithologic reser- voir of carbonate rock distributes widely and shows great hy- drocarbon potential.A series of techniques were adopted in 3-D seismic exploration,accounting for the fractured carbonate res- ervoirs in this area.Layout was designed quantitatively to weaken acquisition footprint and increase signal-to-noise ratio and resolution.Excitation was carried out under water table. High accuracy near surface investigation and static correction of sand dune curve were performed.Noises were suppressed by different techniques such as 3-D multi-domain noise elimina- tion,and cascaded use of different noise elimination methods. Compound reef flat was comprehensively interpreted.With the improvement of 3-D seismic data quality,geologic insight has been renewed,and hit rate of drilling well has increased greatly.
引文
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6李庆忠．走向精确勘探的道路[M]．北京：石油工业出版社，1993．10～24
7 Cox M．反射地震勘探静校正技术[M]。李培明，柯本喜译．北京：石油工业出版社，2004．74～75
8熊翥．我国西部与盐岩有关构造油气勘探地震技术的几点思考[J]．勘探地球物理进展，2005，28(2)：78～80
9李明，李守林，赵一民．塔里木盆地某地区碳酸盐岩裂缝储层预测研究[J]．石油物探，2000，39(2)：24～35
10杨子川．塔河油田碳酸盐岩储层预测技术与应用[J]．勘探地球物理进展，2004，27(6)：433～437
11陈广坡，潘建国，陶云光．碳酸盐岩岩溶型储层综合预测评价技术的应用及效果分析[J]．石油物探，2005，44(1)：34～36
2姚姚，唐文榜．深层碳酸盐岩岩溶风化壳洞缝型油气藏可检测性的理论研究[J]．石油地球物理勘探，2003，38(6)：623～629
3陈学强，段孟川，钟海等．塔里木盆地碳酸盐岩提高分辨率地震采集技术[J]．石油地球物理勘探，2004(西部会议专刊)：50～54
4 Sherif R E，Geldart L P。勘探地震学[M]．初英译．北京：石油工业出版社，1999．220～221
5何樵登．地震勘探原理和方法[M]．北京：地质出版社，1986．20～34
6李庆忠．走向精确勘探的道路[M]．北京：石油工业出版社，1993．10～24
7 Cox M．反射地震勘探静校正技术[M]。李培明，柯本喜译．北京：石油工业出版社，2004．74～75
8熊翥．我国西部与盐岩有关构造油气勘探地震技术的几点思考[J]．勘探地球物理进展，2005，28(2)：78～80
9李明，李守林，赵一民．塔里木盆地某地区碳酸盐岩裂缝储层预测研究[J]．石油物探，2000，39(2)：24～35
10杨子川．塔河油田碳酸盐岩储层预测技术与应用[J]．勘探地球物理进展，2004，27(6)：433～437
11陈广坡，潘建国，陶云光．碳酸盐岩岩溶型储层综合预测评价技术的应用及效果分析[J]．石油物探，2005，44(1)：34～36
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