论文部分内容阅读
The high-waxy condensate in the Qianmiqiao Ordovician burial-hill zone, Bohai Gulf Basin, North China has been investigated by way of high temperature gas chromatography. As high-mature oil, its high molecular weight wax fraction is mainly composed of C35—C69 n-alkanes with CPI37—55 values of 0.94—1.10. On conditions that core-drilling of source rocks was limited and the exact location of source kitchen is still uncertain in the region, it is inferred that the ori-entation of main source kitchen for the condensate should be on the east of the burial-hill zone, i.e. from the direction of Qikou Sag, according to oil-oil correlation between the condensate and surrounding high-waxy oils as well as lateral distribution of the wax content of crude oils. In addi-tion, it is also further confirmed that the oil filling direction for this condensate reservoir is from NE to SW, i.e. from wells BS-4, through BS-7, to BS-8 based on the analyses of 9 maturity and 3 pyrrolic N-compound parameters.
The high-waxy condensate in the Qianmiqiao Ordovician burial-hill zone, Bohai Gulf Basin, North China has been investigated by way of high temperature gas chromatography. As high-mature oil, its high molecular weight wax fraction is mainly composed of C35-C69 n-alkanes with CPI 37-55 values of 0.94-1.10. On conditions that core-drilling of source rocks was limited and the exact location of source kitchen is still uncertain in the region, it is inferred that the ori-entation of main source kitchen for the condensate should be on the east of the burial-hill zone, ie from the direction of Qikou Sag, according to oil-oil correlation between the condensate and surrounding high-waxy oils as well as lateral distribution of the wax content of crude oils In addi-tion, it is also further confirmed that the oil filling direction for this condensate reservoir is from NE to SW, ie from wells BS-4, through BS-7, to BS-8 based on the analyzes of 9 maturity and 3 pyrrolic N-compound paramete rs.