分层注水管柱在渤海BZ油田水平注水井中的创新应用  

Innovative Application of Layered Water Injection String in Horizontal Water Injection Well in BZ Oilfield

作　　者：郭英磊 邹德昊 阮新芳 顾津龙 卢轶宽 李金泽 GUO Yinglei;ZOU Dehao;RUAN Xinfang;GU Jinlong;LU Yikuan;LI Jinze(Tianjin Branch,CNOOCCo.,Ltd.,Tianjin 300457,China;Drilling and Production Company,CNOOC Energy Technology and Services Limited,Tianjin 300457,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300457 [2]中海油能源发展股份有限公司工程技术分公司,天津300457

出　　处：《天津科技》2023年第11期67-70,共4页Tianjin Science & Technology

摘　　要：水平井产能高、经济效益好,随着海上油田的不断开发,水平井数量随之增加,但水平井存在水平段长、无法通过常规手段测试,特殊测试费用高、效率低等问题。基于目前的水平注水井笼统注入方式,下入一套分层注水工具,有径向和轴向2个注水通道,能实现跟部或趾部分段注水,分注管柱内径满足后期测试和措施的需求。以BZ油田C井为例,下入分层注水管柱,吸水测试和调驱试验结果表明,该管柱可实现水平注水井分层注水,能够抑制受益井含水突进,延缓油田自然递减,从而提高油田水驱效果,为海上油田水平井高效开发提供重要技术手段。Horizontal well has high productivity and good economic benefit.With the continuous development of offshore oilfields,the number of horizontal wells has increased.However,the horizontal wells have problems such as long horizontal sections,inability to be tested through conventional methods,high special testing cost,and low efficiency.Based on the current level of water injection wells in general,a set of layered water injection tools are submitted,and two radial and axis water injection channels are used to achieve water injection in heel or toe section.The inner diameter of the layered water injection string can meet the needs of later testing and measures.Taking well C in BZ Oilfield as an example,a layered water injection string is run into.The results of water absorption test and profile control test indicate that this string can achieve layered water injection in horizontal water injection wells,inhibit the sudden increase of water content in beneficiary wells,delay the natural decline of the oilfield,and thus improve the water flooding effect of the oilfield.It provides an important technical means for the efficient development of horizontal wells in offshore oilfields.

关 键 词：水平注水井 分段注水 改善注水剖面 开发效果 

分 类 号：TE355[石油与天然气工程—油气田开发工程]