海上多层砂岩油藏油井压裂充填时机研究与实践——以渤海L油田为例  

Research and practice of fracturing-packing time in offshore multi-layer sandstone reservoirs-a case study of Bohai L Oilfield

作　　者：李媛婷 赵靖康 侯亚伟 申春生 肖波 LI Yuanting;ZHAO Jingkang;HOU Yawei;SHEN Chunsheng;XIAO Bo(Bohai Petroleum Research Institute,Tianjin Branch Company of CNOOC(China)Co.,Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300459

出　　处：《石油地质与工程》2024年第5期70-74,共5页Petroleum Geology and Engineering

基　　金：中海石油(中国)有限公司综合科研项目“海上油田大幅度提高采收率关键技术”(KJGG2021-0501)。

摘　　要：渤海多层砂岩油藏L油田目前已进入中高含水期,调整油井压裂充填后的含水率差异较大,部分油井含水率高、日产油达不到设计要求,对油田调整井的部署影响较大。利用多层数模机理,在不同含水时期分别对油井全井各层压裂充填、仅对主力层压裂充填以及仅对非主力层压裂充填3种压裂充填方式进行效果分析,研究表明,当主力层强水淹厚度达到一定比例时,对主力层压裂充填会导致水窜严重,影响产油量,而对非主力层进行压裂充填,有利于控制油井含水率和增加产油量,为油田调整井射孔压裂充填开发提供依据。The multi-layer sandstone reservoir of Bohai L Oilfield has entered the middle-high water cut stage.The difference of water cut in the production process of adjusted wells after fracturing-packing is large,some wells have high water cut,and the daily oil production can not meet the design requirements,which has a great influence on the deployment in adjustment wells.By using the multi-layer digital model mechanism,the effects of 3 kinds of fracturing-packing methods,in all layers of the whole well,the fracturing-packing in only the principal producing and only the non-principal producing layers are analyzed respectively in different water-cut periods.The results show that when the strong water flooding thickness of the principal producing layers reaches a certain proportion,the fracturing-packing of the principal producing layers will cause water channeling and seriously affect production,while the fracturing-packing of non-principal producing layers is beneficial for controlling water cut of oil wells and increasing production,which provides a basis for the development of fracturing-packing in adjustment wells.

关 键 词：主力层 非主力层 压裂充填 含水率 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]