摘要
BZ28－1碳酸盐岩底水油气藏依靠天然能量开采，生产气油比上升快、地层压力和产油量下降亦快。北块和东南块的上油组属典型气顶气驱动，北块下油组为溶解气驱动。全油田表现出过渡型挥发性油藏的某些生产特点，对这类油田需适当控制采油速度，合理利用天然能量，减缓地层压力下降速度，以缓解产量递减。在北块上油组钻一口水平井，是增加产油量，保证供气方案实施和提高油田采收率的关键措施。
BZ 28-1 carbonate bottom water reservoir was developed by natural energies.Its production gas oil ratio increased rapidly and reservoir pressure and production rate dropped sharply.The upper unit of northern block and east southern block is typically gas cap drive,while the lower unit of northern block is solution gas drive.Total field exibited some production characters of transitional volatile oil reservoir.This type of reservoir needs to control oil production rate,appropriately make use of natural energies to slow down reservoir pressure drop rate and alleviate declining production rate.A horizontal well drilled to the upper unit of northern block would be a key factor to increase oil production,ensure the realization of gas supply plan and enhance recovery efficiency factor.
出处
《中国海上油气（地质）》
1991年第5期31-36,共6页
China Offshore Oil and Gas(Geology)
