分层开采井冲洗验封一体化管柱及关键工具研究  

Research on Integrated Pipe String and Key Tools for Flushing and Sealing in Layered Mining Wells

作　　者：郑灵芸 丁德吉 沈琼 张伦玮 ZHENG Lingyun;DING Deji;SHEN Qiong;ZHANG Lunwei(CNOOC EnerTech-Drilling&Production Co.,Tianjin 300452,China;Guangdong Oil Service Co.,Ltd.,Guangzhou 510030,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]广东南油服务有限公司,广州510030

出　　处：《石油矿场机械》2023年第5期67-71,共5页Oil Field Equipment

基　　金：中海油能源发展股份有限公司科研项目“无缆智能注采产品关键技术研究及应用”(HFKJ-ZX-GJ-2022-01-02)。

摘　　要：在分层开采井的生产管柱下入之前,需要对油水井进行冲洗、封隔器验封作业,常规工艺是采用2趟管柱,作业效率低。为了提高海上油田修井作业时效,降低作业成本,研发了冲洗验封一体化管柱,实现冲砂、分层封隔器验功能,提高了作业时效,单井节约修井时间36 h。设计的滑套式开关冲洗工具结构简单,实现了中心管的零泄露,保障验封评价效果,其内通径冲洗流量达到2000 m^(3)/d,有效保障洗井效果。现场试验表明,冲洗验封一体化管柱及关键工具的性能可靠,可以应用于分层采油井、注水井的完井和修井作业中。Before the production string of the layered mining well is lowered,it is necessary to flush wells and inspect the sealing of the packers.The conventional process is to use two runs of string,which is inefficient.In order to improve the efficiency of offshore oil field workover operations and reduce operating costs,an integrated flushing and sealing inspection string was developed to achieve sand flushing and layered packer inspection functions,the operation efficiency was improved,and 36 hours of work overtime for a single well was saved.The sliding sleeve switch flushing tool has a simple structure and achieves zero leakage of the central pipe,ensuring the effectiveness of sealing inspection and evaluation.The internal flow rate of 2000 m^(3)/d ensures effective well washing.Field tests have shown that the integrated flush and seal column and key tools are reliable and can be used in the completion and workover of stratified oil recovery and water injection wells.

关 键 词：分层开采 冲洗 验封 一体化管柱 

分 类 号：TE935[石油与天然气工程—石油机械设备]