论文部分内容阅读
在石油溶解气研究中丰度具有重要的意义。若以储量计算丰度多会出现较大偏差,甚至在采出程度并不高时使溶解气剩余可采储量和丰度呈现负值。以石油和溶解气累计产量计算丰度则可消除因年度具体情况不同带来的影响,使溶解气丰度更有代表性。溶解气丰度值在中国全国大区间表现为西北最高、海域最低,大盆地一般高于相邻的小盆地。但在同一盆地的不同单元、不同油田间,同一油区(田)勘探开发的不同时期间丰度值可能会有相当大的差异,显示出溶解气丰度的控制因素是复杂的。总体看来,石油溶解气丰度与区域富气性有较强的相关性,保存条件对其亦有直接的影响。目前我国对溶解气的研究还相当薄弱,但溶解气利用潜力很大,建议以合理的政策促进对溶解气的利用。
Abundance in the study of petroleum dissolved gas is of great significance. If the abundance of reserves is calculated, there will be a large deviation, and even if the production level is not high, the remaining recoverable reserves and abundances of dissolved gas will be negative. Calculating the abundance by the cumulative production of oil and dissolved gas eliminates the effects of different annual conditions and makes the dissolved gas abundance more representative. The dissolved gas abundance value is the highest in Northwest China and the lowest in sea area in China. The large basins are generally higher than the adjacent small basins. However, the abundance values of different units, oilfields and oil fields in the same basin during different periods of exploration and development may be quite different. It shows that the controlling factors of dissolved gas abundance are complex. In general, there is a strong correlation between oil-rich gas abundance and regional gas-richness, and the preservation conditions have a direct impact on it. At present, the research on dissolved gas in our country is still quite weak, but the potential for using dissolved gas is very great. It is suggested that the rational use of dissolved gas should be promoted.