断控型挥发油藏连通井组动态储量计算新方法与主控因素分析  

New Method for Calculating Dynamic Reserves in Fault-controlled Volatile Oil Reservoirs and Analysis of Key Controlling Factors

作　　者：李会会[1] 李冬梅[2] 梅胜文 万小勇[4] 邹宁[4] LI Hui-hui;LI Dong-mei;MEI Sheng-wen;WAN Xiao-yong;ZOU Ning(Completion Test Management Center,Sinopec Northwest Oil Field Company,Luntai 841600,China;Engineering Technology Management Department,Sinopec Northwest Oil Field Company,Urumqi 830000,China;No.4 Oil Production Plant,Sinopec Northwest Oil Field Company,Shaya 842200,China;Petroleum Engineering Technology Research Institute,Sinopec Northwest Oil Field Company,Urumqi 830000,China)

机构地区：[1]中国石化西北油田分公司完井测试管理中心,轮台841600 [2]中国石化西北油田分公司工程技术管理部,乌鲁木齐830000 [3]中国石化西北油田分公司采油四厂,沙雅842200 [4]中国石化西北油田分公司石油工程技术研究院,乌鲁木齐830000

出　　处：《科学技术与工程》2025年第9期3657-3663,共7页Science Technology and Engineering

基　　金：中国石油化工股份有限公司科技攻关项目(P24010)。

摘　　要：断控型碳酸盐岩挥发油藏地质条件和生产井间关系复杂,常规方法应用于计算动态储量的适用性差。考虑油藏缝洞发育、油气两相渗流和井间强连通性的特征,提出了挥发油藏拟压力函数并给出油相饱和度变化规律,建立了挥发油藏多相流动物质平衡理论的井组动态储量计算新方法,该方法利用井底流压计算动态储量,且井组无静压测试需求。结果表明:基于多相拟压力函数的流动物质平衡方程描述了产油率和累计产量的线性关系。对井组动态储量主控因素进行偏相关分析,认为影响生产动态特征的主要因素是平均产油量、产量递减率和地层能量。定量评价地层及流体重要参数误差对动态储量计算结果的影响,认为断控性油藏的地层压缩系数和孔隙度对动态储量计算精度影响大。将井组动态储量计算方法应用于顺北油田典型井组,利用多相拟压力代替压力绘制流动物质平衡诊断曲线,规整化产油量与规整化累计产油量关系趋势具有线性特征。实践表明,新方法为准确计算挥发油藏井组的动态储量提供了有效的途径。The geological conditions of fault-controlled carbonate volatile oil reservoirs in Shunbei oilfield and the relationship between production wells are complex,and conventional methods have poor applicability in calculating dynamic reserves.Considering that the reservoir has the characteristics of fracture and cavity development,multi-phase seepage and inter-well interference,a volatile oil reservoir pseudo-pressure function was proposed and the functional relationship between saturation and pressure was given.The multi-phase flow material balance well group dynamics of the volatile oil reservoir material balance theory were established.The proposed method utilizes bottomhole flow pressure to calculate dynamic reserves,while there is no need for static pressure testing in the well group.The results show that the multiphase flow material balance equation describes the linear relationship between oil production rate and cumulative production.A partial correlation analysis was conducted on the main controlling factors of the well group's dynamic reserves,and it was concluded that the main factors affecting the production dynamic characteristics are average oil production,production decline rate and formation energy.Quantitatively evaluate the impact of errors in important parameters of the formation and fluid on the calculation results of dynamic reserves.It is believed that the compression coefficient and porosity of the formation have a great influence on the accuracy of dynamic reserve calculations.The well group dynamic reserve calculation method was applied to a typical well group in the Shunbei oilfield,and the dynamic reserve decrease in the calculation results of a single well was compared to quantify the decrease in dynamic reserves in the Shunbei oilfield due to inter-well interference.The method can accurately calculate the dynamic reserves of well groups in the Shunbei fault-controlled volatile oil reservoirs.

关 键 词：挥发油藏 多井干扰 流动物质平衡 动态储量 参数优选 

分 类 号：TE353[石油与天然气工程—油气田开发工程]