BQ57区Ⅲ1、3层剩余油潜力与分布规律研究  

Study on the Potential and Distribution Law of Remaining Oil in Layer Ⅲ 1 and 3 of BQ57 Area

作　　者：卓兴家[1] 范佳乐 张继成[1] Zhuo Xingjia;Fan Jiale;Zhang Jicheng(School of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《石油化工高等学校学报》2020年第6期32-36,共5页Journal of Petrochemical Universities

基　　金：黑龙江省自然科学基金“多层砂岩油藏合采井产能主控因素及作用机理研究”(E201407)。

摘　　要：目前,目标油田BQ57区由于边水活跃造成油层采出程度低,因此需要对BQ57区剩余油分布进行研究,以期在热采过程中获得较好的效果。通过研究BQ57区Ⅲ1、3层纵向及平面上的剩余油分布规律,得到剩余油总量为43.22×10^4 t。纵向上:Ⅲ11层地质储量为17.76×10^4 t,剩余地质储量为14.72×10^4 t,采出程度为17.19%;Ⅲ12层地质储量最小,为5.79×10^4 t,剩余油较少,为4.86×10^4 t,采出程度为16.09%;Ⅲ31层剩余油最多,为15.4×104 t,采出程度为11.20%;Ⅲ32层剩余油为8.26×10^4 t,采出程度为6.17%。平面上:水下分流河道的剩余地质储量比例为52.87%,由于其分布面积最大,因此其剩余油所占比例最高,储量丰度值也最高;前缘席状砂微相所占剩余油比例为44.98%,其丰度值较高。由于后期井网调整需要结合单井产能,因此井网调整的部位应优先考虑水下分流河道和前缘席状砂。At present,due to active edge water in BQ57 area of target oilfield,the reserve recovery is low.Therefore,it is necessary to study the remaining oil in BQ57 area to ensure good results in thermal recovery process.The distribution law of remaining oil in vertical and plane of layersⅢ1 and 3 in BQ57 area is studied.The total remaining oil is 43.22×10^4 t.In the vertical,the geologic reserve of layerⅢ11 is 17.76×10^4 t.The remaining geological reserves are 14.72×10^4 t.The degree of reserve recovery is 17.19%.The geological reserve of layerⅢ12 is the smallest,which is 5.79×10^4 t.The remaining oil is also less,which is 4.86×104 t.The degree of reserve recovery is 16.09%.The remaining oil in layerⅢ31 is the largest,which is 15.4×10^4 t.The degree of reserve recovery is 11.20%.The remaining oil in layer Ⅲ32 is 8.26×10^4 t and the degree of reserve recovery is 6.17%.On the plane,the proportion of remaining geological reserves channel is 52.87%in underwater distributary.Because its distribution area is largest,the proportion of remaining oil is the highest and the value of reserves abundance is the highest.The proportion of remaining oil in front sand sheet is 44.98%.Its value of reserves abundance is also higher.The latter adjustment of well pattern needs to be combined with the productivity potential of a single well,the underwater distributary channel and front sand sheet should be given priority in the adjustment of well pattern.

关 键 词：油田开发 剩余油分布规律 储量丰度 采出程度 

分 类 号：TE345[石油与天然气工程—油气田开发工程]