长10油藏合理液柱高度探讨  

Discussion of reasonable height of liquid column of ChanglO reservoirs

作　　者：张军斌[1] 张波[1] 李翠平[1] 钟英[1] 王军星[1] 

机构地区：[1]中国石油长庆油田分公司第一采油厂

出　　处：《低渗透油气田》2014年第1期106-110,125,共6页

摘　　要：注水开发的油田，当井底流压低于饱和压力后，由于井底附近油层中渗流条件发生了变化，井底的流压过高或者过低，都不会使油井发挥最大产能。保持合理液柱高度是充分发挥油井产能、提高油田开发效益的保证。长10油藏作为安塞低渗透油田注水开发的新储层，为了后期高效开发．合理液柱高度研究至关重要。通过最低允许流压经验公式计算出长10区块的合理生产流压范围，并通过合理生产流压求出单井合理液枉高度，根据压力测试及现场试验结果对其进行验证，并用于指导生产。对采油一厂建设400×10^4t大油田提供了有利的技术支撑，同时对同类油田的高效开发具有重要的指导意义。For waterflooding oilfields, when the bottomhole flowing pressure is lower than the saturation pressure, due to the change of percolating condition of oil reservoirs near the bottom, it makes the bottomhole flowing pressure too high or too low, and will never maximize the oil well＇s production capacity. Maintaining a reasonable height of liquid column is a guarantee of giving full play to the well productivity, and improving the oilfield development efficiency. As new reservoirs with low permeability of waterflooding the Ansai oilfield, research of reasonable liquid-column height of Chang10 reservoirs is vitally important for the later efficient development. To calculate the range of reasonable production flowing pressure of Chang10 block by using the empirical formula of the minimum allowable flowing pressurc, and to obtain the reasonable liquid column height of individual well by use of the reasonable production flowing pressure. They are tested and verified according to results of the pressure tests and field trials, and are applied to guiding the production. They provide a strong technical support for construction of the No.1Oil Recovery Plant as a large oil field with four million tons production, and have guiding significance for the efficient development of similar oilfields.

关 键 词：地层压力 最低允许流压 合理流压 合理液柱高度 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]