海上M稠油油田吞吐后续转驱开发方案研究  

Development Program of Flooding After Huff and Puff in Offshore M Heavy Oilfield

作　　者：李延杰 李娜 谭先红 朱国金 张利军 LI Yanjie;LI Na;TAN Xianhong;ZHU Guojin;ZHANG Lijun(CNOOC Research Institute,Chaoyang,Beijing 100028,China)

机构地区：[1]中海油研究总院,北京朝阳100028

出　　处：《西南石油大学学报（自然科学版）》2018年第2期98-106,共9页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：中海油有限公司"十二五"重大科技项目(2013-YXZHKY-013);国家科技重大专项(2011ZX05024-005-011)

摘　　要：针对目前渤海地下原油黏度大于350 mPa·s的非常规稠油水驱采收率较低,且考虑到吞吐轮次及平台寿命的问题,开展吞吐后续转驱开发方式研究。以海上M稠油油田为例,利用油藏数值模拟方法对蒸汽吞吐转蒸汽驱、热水驱及多元热流体吞吐转多元热流体驱、热水驱等4种转驱方式的转驱时机及注采参数进行优化设计及对比分析。结果表明,蒸汽吞吐转蒸汽驱开发效果最好,多元热流体吞吐转多元热流体驱略差。蒸汽驱最优注入参数为:转驱压力5MPa左右,采注比1.3,井底蒸汽干度0.4,注入温度340℃,注汽速度240m^3/d。This research focused on low recovery efficiency of water flooding of unconventional underground heavy oil at Bohai,which had a crude viscosity greater than 350 mPa·s.Additionally,the research was based on the cycle of huff and puff and platform life.Offshore M heavy Oilfield was taken as an example.A numerical reservoir simulation was performed to optimize the design.This was used to compare and analyze the flooding time,as well as the injection and production parameters of four flooding patterns,namely,steam huff and puff turning into steam flooding,hot water flooding turning into multiple thermal fluid flooding,multiple thermal fluid huff and puff turning into multiple thermal fluid flooding,and hot water flooding.The results indicate that steam huff and puff turning into steam flooding has the best effect,and multiple thermal fluid huff and puff turning into multiple thermal fluid flooding has a relatively unfavorable effect.Optimal parameters of steam flooding are as follows:the flooding turning pressure is approximately 5 MPa,production–injection ratio is 1.3,steam quality at the bottom of the oil well is 0.4,injection temperature is 340°C,and steam injection speed is 240 m3/d.

关 键 词：海上非常规稠油 热采转驱 蒸汽 多元热流体 热水 气窜 

分 类 号：TE53[石油与天然气工程—油气田开发工程]