| 张创.构造-岩性油藏油水微观分布规律与主控因素探讨[J].地质与勘探,2011,47(3):518-523 |
| 构造-岩性油藏油水微观分布规律与主控因素探讨 |
| Microscopic Distribution Rules of Oil and Water in Structural-LithologicReservoirs and Primary Controlling Factors |
| 投稿时间：2010-09-24 修订日期：2011-01-06 |
| DOI： |
| 中文关键词: 油水接触面 油水过渡带 孔隙结构 构造-岩性油藏 苏北盆地 |
| 英文关键词: oil/ water interface, oil/ water transition zone, pore structure, structural-lithologic reservoir,North Jiangsu basin |
| 基金项目:国家科技支撑计划“低(超低)渗透油田高效增产改造和提高采收率技术与产业化示范冶资助(2007BAB17B00)。 |
|
| 摘要点击次数: 2744 |
| 全文下载次数: 1494 |
| 中文摘要: |
| [摘要]在对油水接触面形态和油水过渡带厚度的分布规律进行定量分析的基础上,以苏北盆地
花17 断块为例,结合油井生产动态特征分析了构造-岩性油藏中油水分布规律,并探讨了其影响因素。
结果表明,在实际油藏中油水接触面是一个呈波状起伏的面,其在自由水面以上的高度随残余油饱和度
下的毛管压力增大而抬高;油水过渡带厚度仅与束缚水饱和度和残余油饱和度下的毛管压力有关,二者
相差越大,过渡带厚度越大;构造-岩性油藏产纯油带、油水过渡带的分布并非平行于构造等高线,油水
分布除受构造位置控制外,还受由沉积作用所引起的岩性、物性和孔隙结构差异的影响。 |
| 英文摘要: |
| Abstract: Taking the fault-bounded block Hua 17 in the North Jiangsu basin as an example, this paper analyzed the oil and gas distribution rules and
controlling factors on the basis of quantitative description of oil/ water interfaces and thickness of oil/ water transition zones in combination with dynamic
features of production of oil wells. The results show that the oil/ water interface in the reservoir is an undulating curved face, and its height above the free
water surface increases with the growth of capillary pressure. The thickness of the oil/ water transition zone is only controlled by capillary pressure when the
saturation is equal to interstitial oil saturation and bound water saturation. Furthermore, the greater the differences are, the thicker the oil/ water transition
zone. Oil/ water microscopic distribution of a structural lithologic reservoir is controlled by not only structural location, but also differences of lithologic
character, physical property, and pore structure resulted from sedimentary process. The equations of oil/ water interface and oil/ water transition zone with
parameters of pore structure are established in this paper. And they are tested by the actual data of the Hua17 fault-bounded block in the North Jiangsu
basin. The result proves that this method is effective in geometric arrangement of wells for oil field production. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
