Geolog在碳酸盐岩储层评价中的应用——以新疆塔河油田奥陶系储层为例

碳酸盐岩储集层由于岩性的特殊和孔隙空间结构的复杂,其测井评价工作难度较大。测井新技术以及计算机处理软件的发展,为定量评价这类储集层提供了有效手段。以新疆塔河油田奥陶系碳酸盐岩油藏为例,介绍了Ceolog软件的应用,并且对应用效果进行了分析。     

垂直管中管径突变对空气-水两相流流型的影响（Ⅰ）突缩接头

Flow patterns upstream and downstream of a sudden-contraction cross-section in a vertical straight pipe were presented. By comparing with flow patterns in uniform cross-section vertical tubes, the effect of the sudden change in pipe diameter on flow patterns was analyzed. Flow pattern transition mechanisms were discussed and transition criteria for flow pattern transitions were deduced accordingly using the dimensional analysis.     

也谈压汞资料与含油饱和度的关系

分析了压汞法毛管压力资料与含油饱和度之间的关系，并指出实验室压汞法的毛管压力与含油饱和度的关系应从两方面来考虑。第一，关于汞的湿润性问题。在压汞过程中由于汞蒸气的客观存在，汞相对于岩石或许是湿润的，而传统上的认识是非湿润的。这方面的认识偏差可能导至用此法求得的含油饱和度偏大。第二，油藏现今的状态与油气成藏时的状态可能不一致，有时会相差甚远，比如油的密度增大，孔隙度降低等，这又可能使求得的含油饱和度偏小，虽然两种因素的存在有时可能相互抵消，但搞清其本质的含义对进一步利用压汞法毛管压力资料将有积极的意义。运用实际资料推测了汞、汞蒸气及岩石3种介质情况下汞的界面张力及湿润角的分布情况，结果发现这些数据与通常的取值相差甚远。     

垂直管中管径突变对空气-水两相流流型的影响(Ⅱ)突扩接头

In this companion paper, flow patterns in the upstream and downstream tubes of a sudden-expansion cross-section (SECS) in a vertical straight pipe were presented. The effect of SECS on flow patterns upstream and downstream was analyzed by comparing with flow patterns in uniform cross-section vertical tubes. It is found the effect is great. There exist great instabilities of two-phase flow in the neighboring areas of the SECS both downstream and upstream.     

低渗透油藏中微电极曲线的应用

针对微电极曲线的负差异现象在低渗透油藏中的普遍情况,从微电极测量原理入手,结合低渗透油藏的其它曲线特征与孔隙结构差异,对微电极曲线的负差异现象进行了解释,认为原因是储层的渗透性差、泥浆的侵入非常弱以及没有形成泥饼等现象造成的;结合岩心实验资料和试油资料,将微电极负差异现象应用于低渗透油藏的物性下限研究和油干层的判别中,取得了良好的效果.