摘要
目前胜利油田复杂断块油藏已进入高含水开发阶段,由于断块油藏特殊的地质构造特征,在不同构造部位的剩余油动用难度差异较大。为探究高含水期复杂断块油藏微观不均衡动用规律,利用三维胶结物理模型,结合核磁共振技术,研究断块油藏不同构造部位微观孔隙剩余油分布特征。结果表明:不同构造部位大中孔隙驱替程度高,动用程度差异较小,小孔隙中驱替程度较低且分布差异性大;在同一构造部位大、中、小孔隙的原油动用程度差别较大,顶部的差别最大,从微观孔隙的角度来看,顶部的动用不均衡程度最明显。从不同构造部位以及不同孔隙级别2个角度,综合评价断块油藏的开发潜力,为断块油藏剩余油的进一步挖潜提供方向。
Nowadays, the complex fault-block reservoir in Shengli Oilfield is at high water cut development stage. With the special characteristics of geological structure for fault-block oil reservoir, the difficulty of the development of remaining oil is various for different structural positions. In order to explore the regulation of imbalanced development from micro view for fault-block reservoirs at high water-cut stage, the remaining oil distribution in the micro-pore for different structural positions of fault-block reservoir with a combination of 3D artificial consolidated physical models and nuclear magnetic resonance is studied in this paper. The results show that, for different structural positions, large and medium pores have good displacement and little difference in development while displacement of small pores is bad and development of them shows large deviation; for the same structural position, there is a great difference on the development of oil among large, medium and small pores, and the difference at the top is the greatest. The development of oil at the top is the most imbalanced from the micro-pore view. Comprehensive evaluation of development potential for fault-block reservoirs from different structure positions and different pore levels are analyzed, which provides a further reference for the following development of remaining oil for fault-block reservoirs.
出处
《断块油气田》
CAS
北大核心
2016年第6期745-748,共4页
Fault-Block Oil & Gas Field
基金
国家重大科技专项专题"气驱辅助水驱机理及技术政策界限研究"(2016ZX05011002-002)
关键词
断块油藏
微观动用均衡程度
核磁共振
fault-block reservoir
micro balanced development
nuclear magnetic resonance
