高油气比油藏储层污染因素及酸化效果分析——以文269块油藏为例  

Reservoir Pollution Factors and Acidizing Effect Analysis in the Reservoirs with High Oil-gas Ratio ——By Taking the Reservoir in Block Wen 269 for Example

作　　者：李帅 张莹莹 俞德恩 王微 李振 

机构地区：[1]中石化中原油田分公司采油四厂,河南濮阳457176

出　　处：《长江大学学报（自科版）（中旬）》2015年第1期52-55,共4页Journal of Yangtze University(Nature Science Edition)

摘　　要：文269块油藏属于异常高压高油气比油藏,在注水开发过程中产能逐渐下降,并且在检泵中常常发现严重结垢现象,多方面研究分析后认为造成油井产能下降的主要原因是储层存在污染。为消除储层污染,提高油井产能,在深入研究储层污染因素的基础上进行了酸化解堵技术研究及现场试验,取得了较好的增油效果。酸化解堵技术能够有效消除井筒及近井地带污染,提高储层渗透性,该技术在文269块油藏的成功应用可以为同类油藏实施稳产上产措施提供参考。The reservoir in Block Wen 269 belonged to a reservoir with abnormal high pressure and high oil-gas ratio,its productivity was reduced gradually in waterflooding.Serious scaling was often found out in pump inspection.Comprehensive analysis was carried out,it indicated that the main reason of productivity decrease was reservoir pollution.In order to eliminate effectively the reservoir pollution and improve the oil productivity,the acidizing and plugging removal technique and field test were performed on the basis of studying factors of reservoir pollution and better effect of oil increment was obtained.The acidizing and plugging removal technique can eliminate effectively wellbore pollution and formation damage near the wellbore and improve the reservoir permeability,it is successfully applied in reservoir development in Block Wen 269,it provides reference for stabling and increasing production in similar reservoirs.

关 键 词：文269块油藏 地层污染 酸化解堵 工作制度 层系组合 

分 类 号：TE258[石油与天然气工程—油气井工程]