低渗油田注水能力下降原因分析及其对策研究  

Causes and countermeasures for the descend of the water injection capacity of low permeability reservoirs

作　　者：王凤琴[1] 廖红伟[1] 蒋峰华[1] 张建国[2] 刘海波[2] 

机构地区：[1]西安石油大学油气资源学院,陕西西安710065 [2]延长油田股份有限公司,陕西延川717208

出　　处：《西安石油大学学报（自然科学版）》2009年第1期52-55,60,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

摘　　要：对注水井注水压力高、注水困难的原因进行了诊断,指出注入水中机械杂质含量严重超标、机杂粒径大,与低渗储层的孔隙喉道大小不匹配是导致储层孔隙堵塞的主要原因,近井地带石蜡的析出是导致储层孔隙堵塞的另一原因.针对此类堵塞,研究了解堵增注方案.通过方案的部署实施,该油田注水难的问题得到了有效解决,区块的开发效果得到了明显改善,提高了区块开发的效益,为同类型油藏的开发提供了借鉴模式.The causes for the increase of the water injection pressure and the descend of the water injection capacity of low permeability reservoirs in Wei 360 fault-block oilfield are analyzed,and it is held that the high content and the large particle size of the solid impurity in the injected water are the main cause,which is mismatched with the throat of the pores in the low-permeability reservoirs,and the precipitation of paraffin near borehole zones is other cause for the plugging of the pores.The schemes for removing this kind of plugging are made.The development result and economic benefit of blocks are improved and after the schemes are implemented.The study results can provide reference for the development of the same kind of low-permeability reservoirs.

关 键 词：低渗透断块油田 地层堵塞 注水开采 油层结垢 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]