深水挥发性油田自喷生产井停喷时机预测方法--以西非尼日尔盆地Akpo油田为例  

A Prediction Method for Stop Flowing Time in Deep-water Volatile Oilfields:a Case Study of Akpo Oilfield in Niger Delta Basin

作　　者：康博韬 顾文欢 肖鹏 景至一 郜益华 陈国宁 李晨曦 KANG Bo-tao;GU Wen-huan;XIAO Peng;JING Zhi-yi;GAO Yi-hua;CHEN Guo-ning;LI Chen-xi(School of Energy Resources,China University of Geoscience(Beijing),Beijing 100083,China;CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;CNOOC International.,Co.,Ltd.,Beijing 100027,China)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中海油研究总院有限责任公司,北京100028 [3]中国海洋石油国际有限公司,北京100027

出　　处：《科学技术与工程》2020年第15期6026-6032,共7页Science Technology and Engineering

基　　金：国家科技重大专项(2011ZX05030-005)。

摘　　要：为了解决深水挥发性油田中高含水阶段生产井停喷风险日增的问题,以西非尼日尔盆地Akpo油田为例,以储层构型分类研究为基础,利用Akpo油田典型井实际生产资料,通过动态相渗规律性研究预测不同储层条件下生产井含水及液量等生产动态指标的变化规律,最终建立一套适用于深水挥发性油田生产井井口压力变化规律及停喷时机预测方法。结果表明:深水挥发性油田自喷井井口压力变化规律主要受到含水及液量的影响,不同储层条件下生产井动态变化规律不同;自喷井生产后期停喷风险日益增大,通过改造一级分离器压力模式可有效延长生产井自喷寿命,经济效益显著;研究方法预测精度较高,可直接用于指导现场生产,研究思路及流程为深水油田开发后期调整提供理论基础和技术支持。To solve stop-flowing problem during the middle and high water cut stage in deep-water volatile oilfields,the Akpo Oilfield in Niger Basin,Africa was studied as an example.Based on the study of reservoir configuration classification with actual production data in the oilfield,the variation of water cut and liquid flow in production wells were predicted under different reservoir conditions and the dynamic relative permeability was studied.The methods of monitoring of production wellhead pressure and the stop-flowing timing prediction in deep-water volatile oilfields were established.Results show that the wellhead pressure variation in deep-water volatile oilfields depended mainly on water cut and liquid flow,and the production dynamic varied with reservoir conditions.The risk of stop-flowing could increase in middle and high water cut stage.The well production life could be prolonged effectively by adjusting the pressure mode of the first separator,which could yield remarkable economic benefit.This method showed high prediction accuracy,and provided a theoretical basis and technical support for the development of deep-water oilfields.

关 键 词：深水开发 挥发性油田 自喷生产 含水上升 液量变化 停喷时机 

分 类 号：TE331[石油与天然气工程—油气田开发工程]