化子坪区长2油藏低产低效井治理对策

Improvement Measures of Low Production and Low Efficiency Wells of Chang 2 Reservoir in Huaziping Area

随着开发的不断推进,化子坪区长2油藏产量递减较快,含水上升速度快,油井见效不明显,单井产能降低,低产低效井比例逐渐增大,严重影响整区的开发效果。本文分别从地质和开发两个方面分析造成低产低效井的成因,并结合多种工艺手段,制定出合理的改造对策,同时配合实施精细注水调整工作,减缓平面矛盾,提高整区开发效果。

Along with development of the oil field, production decline rate of Chang 2 reservoir in Huaziping area is more and more fast, rising velocity of water cut becomes quicker, the response of oil well is indistinct, individual well productivity is lower. Numbers of low efficiency wells increase gradually, which seriously affects development effect of overall oil-field. In this paper, reasons to cause low yield and low efficiency wells were analyzed from the aspects of geology and exploitation. In addition, combined with many technology measures, reasonable strategy was put forward. The reasonable strategy was carried out, at the same time, water injection process was adjusted to slow down the plane contradictions and to improve development effect of the whole region.