摘要
甲型水驱特征曲线和产量递减规律是油藏动态预测的两种重要方法,但两种方法都有其自身的局限性。甲型水驱特征曲线法在动态变化中缺少时间的概念,产量递减法在预测过程中缺少综合含水率这项指标,并且无法预测油田提液后的指标。通过将两种方法综合应用,运用微元法得到定液条件下不同时刻油藏的年产油量、年产水量、自然递减率以及含水上升率等各项动态指标;应用甲型水驱曲线推导出累积液量和累积油量的关系,由此得出不同液量下油藏的各项动态指标,为油田液量优化提供科学依据。该方法应用简单,预测精度高,对油田开发具有重要意义。
The type A water drive characteristic curve and the production decline law are two important methods for reservoir performance prediction,but both methods have their limitations.The type A water drive characteristic curve method lacks the concept of time in dynamic change,and the production decline method lacks the comprehensive water-cut index in the prediction process and can not predict the index after oil extraction.Through the comprehensive application of the two methods,the micro-element method was used to obtain the annual oil production,annual water production,natural decline rate,and water-cut rise rate of the reservoir at different times under constant liquid conditions.The relationship between cumulative fluid volume and cumulative oil volume was deduced by using type A water drive curve,and various dynamic indexes of the reservoir under different fluid volumes were obtained,which can provide a scientific basis for the optimization of oilfield liquid volume.The method is simple to apply and has high prediction accuracy,which is of great significance to oilfield development.
作者
李超
王雨
李文忠
黄建廷
马栋
LI Chao;WANG Yu;LI Wenzhong;HUANG Jianting;MA Dong(Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China)
出处
《复杂油气藏》
2023年第1期100-103,共4页
Complex Hydrocarbon Reservoirs
基金
国家科技重大专项“渤海”“双高”油田挖潜关键技术研究(YXKY-2018-TJ-04)。
关键词
甲型水驱曲线
Arps递减法
微元法
变液量
type A water drive curve
Arps decline method
microelement method
variable liquid quantity
