海相砂岩油藏定量描述技术及开发策略——以文昌Z油田为例

The Quantitative Description Technology and Development Strategy of SubmarineSandstone Reservoir Oilfield:Taking Wenchang Z Oilfield as an Example

文昌Z油田经过二十年的开发,层内层间物性差异大,大部分生产井采用多井合采方式导致剩余油分布较为复杂,定量描述剩余油难度大。以Z油田ZJ1-4U油组为例,利用地质精细描述、剩余油定量描述及时变数值模拟,对剩余油分布进行精细研究,形成一套海相砂岩油藏剩余油定量描述的研究技术。通过油藏剩余油定量描述研究技术,挖掘油田内部潜力,提出加密调整方案,投产后取得良好效果,表明海相砂岩油藏定量描述技术可实施性较高,为类似油藏下步挖潜提供新方法新思路。

Wenchang Z oilfield,after 20 years of development,has large differences in reservoir properties between layers.Most production wells adopt joint production methods,resulting in complex distributions of remaining oil.Quantitatively describing the esmaining oil is difficult.Taking the ZJ1-4U oil group in the Wenchang Z oilfield as an example,through details geological description,quantitative description of remaining oil,and time-variable numerical simulation,the distribution of remaining oil was studied in detail,forming a resdarch technique for quantitative description of marine sandstone reservoirs.Through quantitative description,the potential within the oilfield was explored.A scheme for density adjustment is proposed.After production,good results have been achieved,indicating that the quantitative description technique for marine sandstone reservoirs is highly feasible,providing new methods and ideas for similar reservoirs in future exploitation.