摘要
海上大部分油田已进入开发的中后期,以油井细分层系、卡层堵水、补孔等措施为主的剩余油挖潜技术是油田稳产的重要手段,而确定剩余油和水淹层的分布是挖潜的先决条件,也是生产测井储层动态评价的一项重要内容。重点阐述了目前饱和度动态监测的测井仪器在海上的应用情况,经过渤海、南海西部、东海共132口井的饱和度测井实践证明:储层饱和度测井不仅能应用于老井,过油管确定含油、含气饱和度,油水、气水界面的变化情况,而且定期的动态监测与生产动态相结合,可以了解储层的动用情况,指示剩余油的分布状况,为油田挖潜调整提供依据;储层饱和度测井也能用于油田开发中后期的调整井,采用长短源距C/O方法和中子寿命PNC测井方法,能确定裸眼井测井难以识别的低阻油气藏或可疑油气藏的流体性质,为海上油气田的高效开发贡献力量!
The most of offshore oilfields were at the middle and late stages of development,and remaining oil enhancement based on well subdivision,water plugging,reperforations and other measures were important means of stabilizing oilfield production,and determining the distribution of remaining oil and water-out reservoirs was a prerequisite condition and also was an important part of PLT.The application of saturation logging instrument in offshore oilfields were emphasized.It was used for saturation logging in 132 wells in Bohai Oilfield,in the West of South China Sea and East China offshore oilfield.The result proves that reservoir saturation logging not only can be used in old wells to determine the oil,gas saturation,OWC and GWC changes,and regular monitoring can be combined with dynamic production performance to understand the situation of the reservoir and direct the distribution of remaining oil which can provide the basis for adjustment,and saturation logging also can be used in adjusted wells at the mid-late stages of oilfield development,long/short spaced C/O logging and PNC neutron lifetime are used to identify fluid properties which is difficult to confirm with low resistivity reservoir or suspected fluid property of openhole logging data.Saturation logging contributes a lot to the efficient development of offshore oil and gas fields.
出处
《石油天然气学报》
CAS
CSCD
2012年第6期104-107,168,共4页
Journal of Oil and Gas Technology
关键词
海上油田
剩余油
水淹层
挖潜
饱和度动态监测
offshore oilfield
remaining oil
water-out reservoir
tapping the potential
dynamic detection of saturation
