塔河油田碳酸盐岩油藏油井合理工作制度确定方法

油井工作制度不合理，将导致油井不能发挥其合理产能。对塔河油田部分典型缝洞单元内的无水采油井、含水采油井和高产井，用经验统计法和类比法进行了工作制度合理化分析，得出控制碳酸盐岩油井合理工作制度的方法和做法。对无水采油井，应尽量控制压锥，延长无水采油期；对含水采油井，采用控制或保持液量的方法；高含水后期，水油比趋于稳定时，可放大压差、提高产液量；对高产井，可适当提高单井产量。研究结果可以为碳酸盐岩油井的稳油控水提供理论依据，为油井的动态分析和管理提供有效的指导。

Determination of reasonable work system for oil wells in carbonate reservoir of Tahe Oilfield

Unreasonable work system will restrict the development of oil well productivity. By using empirical and analogy approach, this paper analyzed work system of water-free oil wells, water cut wells and high production wells in typical fracture-cavity unit of Tahe Oilfield. A method to control reasonable work system of oil wells in carbonate reservoir was presented. For water-free production wells, coning should be controlled as possible to prolong production time without water. For water-cut production wells, liquid output should be controlled or sustained, while in the late high water content period when water-oil ratio tends to be stable, producing pressure drop can be increased to enhance the liquid output. For high production wells, production rate of individual well can be raised properly. The results provide theory basis for production stabilization and water-cut control in carbonate reservoir, and as well as the effective instruction for performance analysis and management of oil wells.