【摘要】 陕北浅层低渗透油田伴生气基本上是直接排放到大气中 ,既浪费资源 ,又污染环境 ,以陕北川口油田为例 ,运用容积法计算得出陕北川口油田北区 2 7.84km2范围内 ,伴生气地质储量为 4.94× 1 0 8m3。据南 47井、南 70井和白 2 2井原油地层水及 PVT分析化验资料 ,运用物质平衡法确定其伴生气采收率分别为 71 .5 6 % ,75 .0 2 %和 74.94%。在此基础上得出 ,该区伴生气可采储量为 3 .6 5× 1 0 8m3 ,具有巨大的商业价值。更多还原

【Abstract】 Chuankou Oilfield in northern of Shaanxi Province is situate in the slope of Shaan Gan Ning Basin, whose main objective layers are Chang 6 1 and Chang 6 2 of Yanchang Group of Triassic. The main characteristics of the reservoir in these layers are shallow, low permeability, sealed, closed as well as unsaturated. The associated gas of the Chuankou Oilfield is almost sent out directly into the air, leading to the waste of resources and the pollution of the air. Because of the reasons above. The cubature is used and 4.94×10 8 m 3 geological reserve of gas is worked out in the area of 27.84 km 2 of Chuankou Oilfield in northern Shaanxi Province. On the base of the data of crude oil, formation fluid and PVT in Nan 47, Nan 70 and Bai 22, the law of conservation of mass is applied.The deficiency of the three wells are 71.56%, 75.02% and 74.94%. Then, the whole exploitable reserve should be 3.65×10 8 m 3. The result shows that the potential profit is very huge there.更多还原