摘要
为了解决哈萨克斯坦AK油田采油速度明显降低、主力油层"单层突进"过早见水的问题,开展了桥式偏心分层注水技术研究与应用。根据地层压力、温度、隔层条件和深度分析,优选了桥式偏心分层注水技术进行分层注水。桥式偏心分层注水技术具有可反洗井功能及比较成熟的投捞技术,在油田成功应用5口分层注水井,分注管柱有效期达到3年以上,测调成功率93%。经过井组分析,桥式偏心分层注水技术提高了水驱动用程度,受效采油井产油量明显上升,生产效果大幅改善,该技术在哈萨克斯坦油田具有广阔的推广应用前景。
In order to solve the problems of the obvious decrease of oil production rate and single layer water breakthrough of main reservoir in AK Oilfield of Kazakhstan,research and application of bridge eccentric separate layer water injection technology have been carried out.According to the analysis of formation pressure,temperature,interlayer condition and depth,the bridge eccentric separate layer water injection technology is selected for separate layer water injection.The bridge eccentric separate layer water injection technology has the reverse circulation function and relatively mature fishing technology.Five separate layer water injection wells have been successfully applied in the oilfield.The effective period of separate layer water injection string is more than 3 years,and the success rate of test and adjustment is 93%.Through well group analysis,the bridge eccentric separate layer water injection technology improves the production degree of water flooding;the oil production of beneficial producers increases significantly;and the production effect is greatly improved.The technology has broad application prospects in Oilfields of Kazakhstan.
作者
祝传增
Zhu Chuanzeng(Production Technology Instilute of Daqing Oifield Limited Company)
出处
《采油工程》
2020年第3期37-41,81,共6页
Oil Production Engineering
关键词
AK油田
分层注水
桥式偏心
反洗井
测试调配
AK Oilfield
separate layer water injection
bridge eccentric
reverse circulation
test and adjustment
