温吉桑构造带温南1-1断块油气藏相态分析
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摘要
温南1-1断块油气藏是一个含底水的凝析油气藏。当时根据其所产油气性质和气油比初步分析,认为下油组为凝析气藏。但从测井曲线来看,射孔层位之下5m的油气层在声波时差上无明显的高时差响应,同时,其电阻率明显低于射孔井段。在地震剖面上,射孔井段经合成记录标定,频率降低较明显,而其下部反射无此特征。因此怀疑下油组可能并非为简单的凝析气藏,而是否为一具油环的凝析气藏?这一问题的解决对进一步认识该块的油气藏类型,计算储量和投入开发意义重大。就此,从物理性质、C_5~+含量判别法、C_1/C_5~+比值判别法、等级分类判剐法(Φ)、Z因子判别法、测井解释、气层低频地震特征等五种方法的综合分析,认为下油组为带油环的凝析气藏。
The Wennanl -1 fault block reservoir is a bottom watered condensate oil and gas reservoir. In 1999, the lower oil -bearing formation (2464～2474m) was perforated to test production. It was concluded that the lower oil-bearing formation was a condensate gas reservoir through preliminary analysis of produced oil and gas properties and gas - oil ratio. However evidences got from log data and seismic profile showed that the lower formation probably was not a simple condensate gas reservoir, but a condensate gas reservoir with and oil ring. The author believes the lower oil - bearing formation is a condensate gas reservoir with an oil ring through comprehensive analysis by use of five methods.
The Wennanl -1 fault block reservoir is a bottom watered condensate oil and gas reservoir. In 1999, the lower oil -bearing formation (2464～2474m) was perforated to test production. It was concluded that the lower oil-bearing formation was a condensate gas reservoir through preliminary analysis of produced oil and gas properties and gas - oil ratio. However evidences got from log data and seismic profile showed that the lower formation probably was not a simple condensate gas reservoir, but a condensate gas reservoir with and oil ring. The author believes the lower oil - bearing formation is a condensate gas reservoir with an oil ring through comprehensive analysis by use of five methods.
引文
[1] 王智诒.石油地震地质学.中国石油天然气总公司石油勘探开发科学研究院研究生部.
[2] 刘震.储层地震地质学.北京:地质出版社,1997,12．
[2] 刘震.储层地震地质学.北京:地质出版社,1997,12．
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