摘要
大庆外围的新站、熬南油田葡萄花油层均属低渗透率储层,非均质性强,经过长期注水开发,注水井欠注问题日趋严重。为了研究新站、熬南油田葡萄花层的欠注原因,我们对相关区块的注入水和返排液进行了全水质分析后,通过无机垢含量测定和注入水堵塞室内岩心实验,对新站、敖南油田的欠注原因进行了分析;结果表明,研究区块悬浮物含量、粒度和细菌含量等的超标,是导致欠注的重要原因。研究结果对新站、敖南油田解堵增注及水驱开发低渗透率油层具有重要意义。
Putaohua Oil layers in Xinzhan and Aonan Oilfields in the periphery of Daqing are low permeability reservoirs with strong heterogeneity.After long-term water injection development,the problem of water injection wells under injection is becoming more and more serious.In order to study the reasons of under injection in Putaohua formation in Xinzhan and Aonan Oilfields.After analyzing the total water quality of injection water and flowback fluid in related blocks,the reasons of under injection in Xinzhan and Aonan Oilfields are analyzed by measuring inorganic scale content and plugging core experiment of injected water.The results showed that the over standard of suspended matter content,particle size and bacteria content in the study block is the important reason for under injection.The research results are of great significance for plugging removal,injection increase and water flooding development of low permeability reservoirs in Xinzhan and Aonan Oilfields.
作者
张紫航
卓兴家
曹广胜
张宁
张人昱
ZHANG Zi-hang;ZHUO Xing-jia;CAO Guang-sheng;ZHANG Ning;ZHANG Ren-yu(Key Laboratory of Enhanced Oil&Gas Recovery of Northeast Petroleum University,Ministry of Education,Daqing 163318,China;No.9 Oil Production Plant of Daqing Oilfield Co.,Ltd.,Daqing 163853,China)
出处
《化学工程师》
CAS
2021年第7期46-50,33,共6页
Chemical Engineer
基金
国家自然科学基金(No.51574089)。
关键词
大庆外围
储层伤害
欠注
提高采收率
Daqing periphery
reservoir damage
under injection
enhanced oil recovery
